CN103511935B - Lighting device - Google Patents

Abstract

The invention provides a kind of lighting device, increase the indirect light of ligthing paraphernalia. Lighting device of the present invention possesses substrate; The first LED light source of installing on electrode on substrate and the second LED light source; First optics corresponding with the first LED light source; Second optics corresponding with the second LED light source; With the optics connecting portion that is connected the first optics and the second optics, photometric distribution from the emergent light of the first optics is different from the photometric distribution of the emergent light from the second optics, by the first optics, optics connecting portion and the second optics formation composite optical component, at least a portion of composite optical component coated electrode.

Description

Lighting device

Technical field

The present invention relates to lighting device.

Background technology

In recent years, as the light source of lighting device, LED(LightEmittingDiode, luminousDiode) use increase. As the room lighting device of the type of installing on ceilingThe light source that tool is used, also brings into use LED to replace fluorescent tube. LED has the feature without mercury,It is the light source of looking after environment.

Use the lighting device of LED, give directive property to the emergent light from LED. PatentOptics to give directive property from the emergent light of LED is disclosed in document 1 and patent documentation 2System.

Patent documentation 1: TOHKEMY 2010-198919 communique

Patent documentation 2: TOHKEMY 2007-48740 communique

Summary of the invention

The room lighting utensil of the type of for example installing on ceiling as light source with LED, withThe room lighting utensil of the type of installing on ceiling as light source with fluorescent tube is compared, and existsFrom the narrower problem of luminous intensity distribution of the emergent light of utensil. Particularly, because towards ceiling directionLight less, so there is the less problem of indirect light. In patent documentation 1 and 2, do not considerThis problem, is considered to obtain sufficient light distribution characteristic and improves. The application's object is,In the room lighting utensil of the type of for example installing on ceiling as light source with LED, between makingConnecing light increases.

Scheme for problem of the present invention is for example as described below.

A kind of lighting device, comprising: substrate; A LED who installs on electrode on substrateLight source and the second LED light source; First optics corresponding with the first LED light source; WithThe second optics that two LED light sources are corresponding; Be connected the first optics and the second optics portionThe optics connecting portion of part, from the photometric distribution of the emergent light of the first optics with fromThe photometric distribution difference of the emergent light of the second optics.

A kind of lighting device, has: substrate; The LED light source of installing on electrode on substrate;With the optics corresponding with LED light source, establish lighting device and mainly irradiate direction of light for positiveDirection, when the direction substantially vertical with frontal is side surface direction, optics has leaded lightPortion, light guide section is the guided outside to side surface direction by light, and the exit facet of light guide section is to make light to sideThe face of the outside outgoing of face direction.

A kind of lighting device, has: substrate; The LED light source of installing on electrode on substrate;With the optics corresponding with LED light source, establish lighting device and mainly irradiate direction of light for positiveDirection, when the direction substantially vertical with frontal is side surface direction, states the outgoing of opticsThe outside that is positioned at side surface direction compared with the end of portion and substrate, optics makes from LED light sourceLight to the outside outgoing of side surface direction.

A kind of lighting device, has: substrate; With the multiple LED that install on electrode on substrateLight source, establishing lighting device, mainly to irradiate direction of light be frontal, roughly hangs down with frontalWhen straight direction is side surface direction, multiple LED light sources are mainly in the normal direction of substrate, to go outPenetrate the front emitting led light source of light, in multiple LED light sources, for the side at lighting deviceThe LED light source of the outermost configuration of face direction, configuration accordingly has to be made to send out towards frontalThe optics at the light of light position of lateral reflection outside side surface direction, at the LED of outermost configurationOn the position that light source configures, optics is asymmetrical in outside and the inner side of side surface directionShape.

According to the present invention, can increase the indirect light of ligthing paraphernalia. Problem, knot beyond above-mentionedStructure and effect are by clear and definite by the explanation of following embodiment.

Brief description of the drawings

Fig. 1 is the front elevation of the structure of the lighting device for first embodiment of the invention is described.

Fig. 2 is the sectional view of the structure of the lighting device for first embodiment of the invention is described.

Fig. 3 is the figure of the structure of the lighting device for first embodiment of the invention is described.

Fig. 4 (a) is the figure of the LED light source for the first embodiment of the present invention is described.

Fig. 4 (b) is the figure of the LED light source for the first embodiment of the present invention is described.

Fig. 5 (a) is the figure of the LED light source for the first embodiment of the present invention is described.

Fig. 5 (b) is the figure of the LED light source for the first embodiment of the present invention is described.

Fig. 5 (c) is the figure of the LED light source for the first embodiment of the present invention is described.

Fig. 5 (d) is the figure of the LED light source for the first embodiment of the present invention is described.

Fig. 6 (a) be the lighting device for first embodiment of the invention is described structure cutFace figure.

Fig. 6 (b) be the lighting device for first embodiment of the invention is described structure cutFace figure.

Fig. 7 (a) is the figure of the structure of the lighting device for first embodiment of the invention is described.

Fig. 7 (b) is the figure of the structure of the lighting device for first embodiment of the invention is described.

Fig. 8 is the sectional view of the structure of the lighting device for second embodiment of the invention is described.

Fig. 9 (a) is the problem that the lighting device for second embodiment of the invention is described solvesFigure.

Fig. 9 (b) is the problem that the lighting device for second embodiment of the invention is described solvesFigure.

Fig. 9 (c) is the problem that the lighting device for second embodiment of the invention is described solvesFigure.

Fig. 9 (d) is the problem that the lighting device for second embodiment of the invention is described solvesFigure.

Figure 10 (a) is the problem that the lighting device for second embodiment of the invention is described solvesFigure.

Figure 10 (b) is the problem that the lighting device for second embodiment of the invention is described solvesFigure.

Figure 10 (c) is the problem that the lighting device for second embodiment of the invention is described solvesFigure.

Figure 10 (d) is the problem that the lighting device for second embodiment of the invention is described solvesFigure.

Figure 11 (a) is the figure of the structure of the lighting device for second embodiment of the invention is described.

Figure 11 (b) is the figure of the structure of the lighting device for second embodiment of the invention is described.

Figure 11 (c) is the figure of the structure of the lighting device for second embodiment of the invention is described.

Figure 11 (d) is the figure of the structure of the lighting device for second embodiment of the invention is described.

Figure 12 is the cross section of the structure of the lighting device for third embodiment of the invention is describedFigure.

Figure 13 is the cross section of the structure of the lighting device for four embodiment of the invention is describedFigure.

Figure 14 is the figure of the structure of the lighting device for fifth embodiment of the invention is described.

Figure 15 (a) be the lighting device for fifth embodiment of the invention is described structure cutFace figure.

Figure 15 (b) be the lighting device for fifth embodiment of the invention is described structure cutFace figure.

Figure 16 (a) is the figure of the structure of the lighting device for first embodiment of the invention is described.

Figure 16 (b) is the figure of the structure of the lighting device for first embodiment of the invention is described.

Figure 16 (c) is the figure of the structure of the lighting device for first embodiment of the invention is described.

Figure 17 (a) be the lighting device for second embodiment of the invention is described structure cutFace figure.

Figure 17 (b) be the lighting device for second embodiment of the invention is described structure cutFace figure.

Figure 17 (c) be the lighting device for second embodiment of the invention is described structure cutFace figure.

Figure 17 (d) be the lighting device for second embodiment of the invention is described structure cutFace figure.

Figure 17 (e) be the lighting device for second embodiment of the invention is described structure cutFace figure.

Figure 18 (a) is the figure of the structure of the lighting device for sixth embodiment of the invention is described.

Figure 18 (b) is the figure of the structure of the lighting device for sixth embodiment of the invention is described.

Figure 19 is the cross section of the structure of the lighting device for sixth embodiment of the invention is describedFigure.

Figure 20 is the cross section of the structure of the lighting device for seventh embodiment of the invention is describedFigure.

Figure 21 (a) is the figure of the structure of the lighting device for seventh embodiment of the invention is described.

Figure 21 (b) is the figure of the structure of the lighting device for seventh embodiment of the invention is described.

Figure 21 (c) is the figure of the structure of the lighting device for seventh embodiment of the invention is described.

Figure 22 (a) be the lighting device for seventh embodiment of the invention is described structure cutFace figure.

Figure 22 (b) be the lighting device for seventh embodiment of the invention is described structure cutFace figure.

Figure 22 (c) be the lighting device for seventh embodiment of the invention is described structure cutFace figure.

Figure 23 (a) be the lighting device for seventh embodiment of the invention is described structure cutFace figure.

Figure 23 (b) is the figure of the structure of the lighting device for seventh embodiment of the invention is described.

Figure 24 is the figure of the structure of the lighting device for seventh embodiment of the invention is described.

Figure 25 (a) is the figure of the structure of the lighting device for seventh embodiment of the invention is described.

Figure 25 (b) be the lighting device for seventh embodiment of the invention is described structure cutFace figure.

Figure 25 (c) be the lighting device for seventh embodiment of the invention is described structure cutFace figure.

Figure 25 (d) be the lighting device for seventh embodiment of the invention is described structure cutFace figure.

Figure 25 (e) be the lighting device for seventh embodiment of the invention is described structure cutFace figure.

Figure 25 (f) is the figure of the structure of the lighting device for seventh embodiment of the invention is described.

Figure 25 (g) is the figure of the structure of the lighting device for seventh embodiment of the invention is described.

Symbol description

1 lighting device

2 substrates

3LED light source

4 optics connecting portions

5 first opticses

6 second opticses

7 composite optical components

8 diffusion shells

9 lighting circuits

10 central covers

11 frameworks

30 light emitting diodes (LED)

31 negative electrodes

32 positive electrodes

33 fluorophor

34 sealing resins

35 wires

36(36') mounting terminal

37 frameworks

40(40') electrode

50 ceilings

51 fixers

Detailed description of the invention

Below with explanation the present invention such as accompanying drawings.

[embodiment 1]

Fig. 1 is the front of the structure of the lighting device for the first embodiment of the present invention is describedFigure is the figure observing from normal direction that the substrate 2 of LED light source 3A, 3B is installed. SubstrateThe face that LED light source 3A, 3B have been installed on 2 is called installed surface. Fig. 1 is for LED is describedThe front elevation of the summary of the configuration of light source 3A, LED light source 3B and composite optical component 7, instituteTo have omitted the parts irrelevant with explanation. Fig. 2 is the sectional view of the A-A' that records of Fig. 1. This sectionFace is and the face of normal parallel of substrate 2 that LED light source 3A, LED light source 3B have been installed.In Fig. 2, also only record main parts.

LED light source 3A is configured in than LED light source 3B and (approaches center C one side) more in the inner part,From the center C of lighting device 1, scatter radially, configure in the mode around center C.LED light source 3B is configured in most peripheral, configures in the mode around center C.

About LED light source 3A, with Fig. 4 (a) and Fig. 4 (b) detailed description. Fig. 4 (a)Be the figure that observes LED light source 3A from the normal direction of substrate 2, Fig. 4 (b) is Fig. 4 (a)C-C' sectional view. As the example of LED light source, represent to use the LED of blue-light-emittingSituation with the White LED module of yellow fluorophor. The present invention does not limit the luminous of LEDThe structure such as LED quantity, species number that spectrum, shape, LED light source comprise and fluorophorThe structures such as the species number of the fluorophor have or not, kind, LED light source comprising.

In LED light source 3A, LED30 is arranged on the framework 37 as material by white resin etc.Installed surface 37a on. In this example, on the installed surface 37a of framework, negative electrode 31 is installed,LED30 is installed on it. LED30 is electrically connected by wire 35 and negative electrode 31 and positive electrode 32Connect. In the inner side of framework 37, LED30 and absorption also will from a part for the light of LED30The fluorophor 33 that the light absorbing is transformed to the longer light of wavelength is together by the sealing resins such as silica gel 34Sealing.

Light-emitting area 3AE is the face of emergent light in LED light source 3A, so can be defined as frameworkThe face that 37 sidewall 37b surrounds. But, because framework 37 makes a part of light transmission, so lightSpill from framework entirety. But most light is from light-emitting area 3AE outgoing.

What light-emitting area 3AE was defined as to face that the sidewall 37b of framework 37 surrounds the reasons are as follows instituteState. The light sending from LED30, a part of light by fluorophor 33 absorb, scattering see through,Reflection there is Fresnel reflection and becomes in a part of light on the interface of sealing resin 34 and airBack light, so a part as utilizing emitted light from sealing resin 34 outgoing. From LED30'sUtilizing emitted light reflects repeatedly, scattering, is diffused into the region entirety of the sidewall 37b encirclement of framework 37.Be diffused into the utilizing emitted light from LED30 of this region entirety, be activated in this region entirety and scatterFluorophor 33 make light-emitting phosphor. Like this, light is from this region entirety outgoing. Therefore, will send outLight face 3AE is defined as the face of the sidewall 37b encirclement of framework 37. But, at light-emitting area 3AEIn, near luminous intensity maximum LED30.

In the outside of framework 37, there is being somebody's turn to do of being electrically connected respectively with negative electrode 31 and positive electrode 32Mounting terminal 36, the mounting terminal 36' of LED light source 3A to substrate 2. Mounting terminal 36, peaceDress terminal 36' is electrically connected with electrode 40, the electrode 40' of distribution on substrate 2.

LED light source 3A in the present embodiment is characterised in that the mainly normal direction at substrate 2Upper emergent light this point. Main emergent light, refers to centered by the normal of substrate 2, departs fromThe angle of normal is in the situation of polar angle, and in the direction in the degree of polar angle ± 90, outgoing is moreLight. In addition, mostly in situation, the angle of the luminous luminosity maximum of LED light source almost with substrate2 normal direction is identical, or in the degree of polar angle ± 20. With LED light source 3A is installedThe face of substrate 2 almost parallels on LED30 is installed. In addition have in addition, and LED light is installedThe light-emitting area this point of substrate 2 almost parallels of source 3A. Below will at least have in these featuresThe LED light source of a certain be called front emitting led light source. This LED light source 3A is instituteThe LED light source of the type of meaning top light emitting.

In situation, the radiative photometric distribution of front emitting led light source, is to install mostly(apart from the angle θ of normal and luminosity, (radiation is strong for maximum lambertian distribution in the normal direction of faceDegree) I(θ) with luminosity (radiation intensity) I(0 of normal direction) relation, become following relation.I(θ)=I(0) cos θ). For LED light source 3A, configure in front view with LEDIsotropic lens centered by light source 3A as the first optics 5(with reference to Fig. 1). ThisPlace, these lens are not limited to respect to LED light source 3A center isotropism.

For LED light source 3B, with Fig. 5 (a)～Fig. 5 (d) detailed description. Fig. 5 (a)Be the figure that observes LED light source 3B from the normal direction of substrate 2, Fig. 5 (b) is as Fig. 5 (a)The figure of arrow E overview LED light source 3B, be from the direction relative with light-emitting area 3BEThe figure observing. Fig. 5 (c) is as the arrow F overview LED light source 3B's of Fig. 5 (a)The figure of side. Fig. 5 (d) is the D-D' sectional view of Fig. 5 (b). Represent to use blue sending outThe White LED module of the LED of light and yellow fluorophor is as the feelings of the example of LED light sourceCondition. The present invention does not limit the LED that luminescent spectrum, shape, the LED light source of LED compriseThe fluorescence that the having or not of the structure such as quantity, species number and fluorophor, kind, LED light source compriseThe structures such as the species number of body.

In LED light source 3B, LED30 is arranged on upper (the reference figure of installed surface 37a of framework 375(d)). In this example, on the installed surface 37a of framework, negative electrode 31 is installed, is installed thereonLED30. LED30 is electrically connected with negative electrode 31 and positive electrode 32 by wire 35. In framework37 inner side, LED30 and absorption become from a part for the light of LED30 and by the light absorbingThe fluorophor 33 that is changed to the longer light of wavelength is together sealed by the sealing resins such as silica gel 34.

Same with the light emitting source 3AE of LED light source 3A, the light-emitting area 3BE of LED light source 3BThe face of emergent light in LED light source 3B, so can be defined as the sidewall 37b bag of framework 37The face (with reference to Fig. 5 (b) and Fig. 5 (d)) enclosing. The reason of definition and LED light source 3A send outWhen light face 3AE definition, the reason of explanation is identical. But, because framework 37 makes a part of light transmission,So light spills from framework entirety. Particularly, light spills from the thinner position of framework 37. But,Most light is from light-emitting area 3BE outgoing.

In the outside of framework 37, there is being somebody's turn to do of being electrically connected respectively with negative electrode 31 and positive electrode 32Mounting terminal 36, the mounting terminal 36' of LED light source 3B to substrate 2. Mounting terminal 36, peaceDress terminal 36' is electrically connected with electrode 40, the electrode 40' of distribution on substrate 2.

This LED light source 3B be characterised in that with the substrate 2 that LED light source 3B is installed roughlyLED30 this point is installed on vertical face. Also can be described as and roughly hanging down with mounting terminal 36LED30 this point is installed on straight face. In addition, also can be described as not parallel with substrate 2,On the face tilting with respect to substrate 2, LED30 is installed. In addition also can be described as with respect to just,Face emitting led light source 3A installs LED30 with different angles. In addition, other are characterised in thatThere is the light-emitting area this point substantially vertical with the substrate 2 that LED light source 3B is installed. In other words,To there is the light-emitting area this point substantially vertical with mounting terminal 36. In addition, also can be described as phaseFor front emitting led light source 3A with different angle configurations light-emitting areas. In addition also can,Say and there is light-emitting area not parallel with substrate 2, that tilt with respect to substrate 2. In addition, alsoCan say mainly with the uneven direction of normal of substrate 2, with respect to the normal of substrate 2Direction (this direction is called to the lateral emitting center position) emergent light that direction tilts. Mainly go outPenetrate light, referring to lateral emitting center position (is roughly to hang down with the normal of substrate 2 in this exampleStraight direction) centered by, the side in angle ± 90 degree that departs from lateral emitting center positionThe upwards more light of outgoing. In addition, in most situation, the luminous luminosity maximum of LED light sourceAngle is roughly identical with lateral emitting center position, or apart from the angle of lateral emitting center positionDegree is ± 20 degree in.

Below, the LED light source of a certain at least having in these features is called to lateral emittingLED light source. This LED light source 3B is the LED light source of the type of so-called lateral emitting.

But this LED light source may be tilted in error range because of mounting condition. Therefore,The substrate 2 and face and this substrate 2 and light-emitting area institute that LED30 is installed of LED light source 3B are installedThe angle becoming may depart from from 90 degree. Preferably with this bias of spending from angle 90 be preferably ±20 degree are installed in interior mode with interior and then be preferably ± 5 degree.

In Fig. 1, the normal of the light-emitting area 3BE of LED light source 3B is in installed surface outside directionSide (from the outside direction of center C), main light emission direction is installed surface direction outside. Susceptible greatlyUnder condition, radiative photometric distribution is the normal direction at the light-emitting area 3BE of LED light source 3BThe lambertian distribution (Lambertian) of upper maximum. For LED light source 3B, configure accordinglyTwo opticses 6. Relatively configure the second optics portion with the light-emitting area 3BE of LED light source 3BThe plane of incidence 6A of part 6, at the interior light to leaded light outside direction in installed surface of the second optics 6,Outgoing from exit facet 6B to air. Plane of incidence 6A and exit facet 6B and substrate 2 roughly hang downDirectly. , with the method for substrate 2 that the LED light source corresponding with the second optics 6 has been installedIn the cross section of line parallel, the plane of incidence of the second optics and the shape of exit facet are straight lines.

The first optics 5 is connected by optics connecting portion 4 with the second optics 6, shapeBecome composite optical component 7. In present embodiment, the moulding together of all opticses, by optics portionPart connecting portion 4 connects. In this example, composite optical component 7 use Merlon, polystyrene,The resins such as acrylic resin are as material.

Illustrate in greater detail with the cross sectional shape of Fig. 2. As shown in the arrow in Fig. 2, establish illuminationThe main irradiation direction of light of device 1 is frontal Z. About lighting device 1 main light irradiationDirection, for example, if the lighting device of the type in the illuminating chamber arranging on ceiling,The normal direction of ceiling, or from ceiling the direction towards floor (lighting device 1 justLower direction) be frontal Z. And then, also can roughly maximum of establishing photosensitiveness (photometric distribution)Direction be frontal Z.

If direction is side surface direction in the face substantially vertical with frontal Z. In present embodiment,The normal direction of the installed surface of substrate 2 is parallel with frontal Z, thus installed surface in direction withSide surface direction is identical direction. The normal of the installed surface of substrate 2 tilts from frontal ZIn situation, in installed surface, direction becomes different directions from side surface direction.

Lighting device 1 has the framework 11 as framework, and framework 11 is for example made of iron. At frameThe plane 11A of a part for frame 11 is upper by the installation base plate 2 such as screwing togather. Framework 11 has hollowPortion, is provided with the lighting circuit 9 of driving LED light source 3A, LED light source 3B at hollow bulb.Near the framework 11 bending 2E of the end of substrate 2 is tilted, and has rake 11B. At frameworkDiffusion shell 8 is installed on 11.

Lighting device 1 utensil 51 that is fixed is fixed on ceiling 50. Because there is fixatorTool 51, so do not configure LED light source 3 at the center of lighting device 1. At fixer 51Frontal one side be provided with central cover 10, light can not entered and has configured fixer 51Groove in. Propagate and the light that comes to this groove, by central cover 10 to frontal reflection, scattering.Central cover 10 is preferably the parts that reflectivity is high. And then the inner side of substrate 2 and framework 11 makesBy white application, white diaphragm, white film etc., with white material covering, so inHeart cover 10 is also preferably the parts of white scattered reflection.

In this example, diffusion shell 8 is the shapes that cover whole LED light source 3, makes LED light source 3The light scattered reflection of sending, see through. In order to illustrate, diffusion shell 8 is divided into diffusion shell 8 substantiallyNormal to a surface roughly towards the face portion 8A of frontal Z, and diffusion shell 8 is surperficialNormal is roughly towards the side surface part 8B of side surface direction. Diffusion shell 8 is resin in most situation,Contain the diffusion materials such as silica at resin. The total light transmittance of diffusion shell 8 can be usedThe kind of diffusion material and concentration control. To the light of diffusion shell 8 incidents, there is certain scatteringAngular distribution ground is from diffusion shell 8 outgoing to lighting device 1. Wherein, the present invention does not limit expansionThe shape of loose cover 8, can be also the shape that does not cover whole LED light source, also can be not wholeDiffusivity is given in individual diffusion shell region.

Scattering angle distributes generally speaking different in through light and reverberation. See through scattering of lightThe luminous intensity distribution of angular distribution illumination apparatus directly exerts an influence. Lighting device (ligthing paraphernalia)Luminous intensity distribution luminance representation, relatively, scattering angle distributes and is mostly used as generatrix bright of objectDegree, divided by the value evaluation of the total light beam from this generatrix outgoing, so distribute about scattering angle, is usedScattering sees through Luminance Distribution (BTDF:BidirectionalTransmittanceDistributionFunction) explanation.

The scattering of light characteristic that sees through for diffusion shell 8 illustrates with Fig. 3. Fig. 3 represents light RAYIWith respect to the plane of incidence 8SI of certain generatrix of diffusion shell 8 with incidence angle θ i incident, light RAYOSee through the situation of Luminance Distribution outgoing with certain scattering from exit facet 8SO. Incidence angle θ i and outgoingAngle θ o is the angle taking the normal 8N of this generatrix as benchmark.

In the low situation of total light penetration of diffusion shell 8, the exit facet of diffusion shell 8 is approachingIn no matter, light is with what angle to diffusion shell 8 incidents, and scattering sees through Luminance Distribution for any sideTo uniform completely faces of diffusingsurface all.

Along with total light penetration of diffusion shell 8 improves, scattering sees through Luminance Distribution and becomesIn the angle that firing angle θ o equates with incidence angle θ i, there is peak value.

In Fig. 2, the light of the face portion 8A incident to diffusion shell, departs from frontal Z establishingThe angle situation that is polar angle under, outgoing in the scopes of ± 90 degree centered by polar angle 0 degree.Outgoing photometric distribution from the face portion 8A of diffusion shell roughly has peak value on polar angle 0 degree.The light of the side surface part 8B incident to diffusion shell, centered by polar angle 90 degree in the scopes of ± 90 degreeInterior outgoing. From the outgoing photometric distribution of the side surface part 8B of diffusion shell roughly on polar angle 90 degreeThere is peak value.

In most situation, because the area of face portion 8A is larger compared with side surface part 8B, soThe scope of polar angle 0 to roughly ± 70 degree of the light distribution characteristic of lighting device 1 depends on more by force frontThe outgoing photometric distribution of the 8A of portion. The roughly polar angle 80 of the light distribution characteristic of lighting device 1 is spent to 180Degree and roughly polar angle-80 degree depend on more by force the outgoing luminosity of side surface part 8B to the scope of-180 degreeDistribute.

Only use in the situation of front emitting led light source, because more light is to face portion 8AIncident, thus the floor under lighting device 1 brighten because the incident light to side surface part 8BLess, thus under lighting device 1 to beyond floor, wall and ceilingThe light of direction is less. Therefore, exist the corner in room fully not brighten, indirect light is lessProblem.

In order to solve this problem, consider to make the light beam towards side surface part 8B outgoing from LED light sourceIncrease, but because the less this point of side surface part 8B area and be positioned at lighting device outermost thisA bit, the LED light source on substrate 2 must be little to comparing with face portion 8A, there is distanceFrom locational target light irradiation. Making the light beam of this side surface part 8B incident increase is the present inventionOne of specific purposes.

Use wide-angle lens to make the light diffusion from front emitting led light source, also can be madeThe effect that the light beam of side surface part 8B incident is increased. But, from the face side that is positioned at substrate 2The light of LED light source to the inside spreads before light arrives side surface part 8B, can not be fullyLight irradiation. Therefore, by using the LED light source nearest apart from side surface part 8B to irradiate side surface part 8BCan obtain larger effect.

In this situation, be difficult to make most of light from the light of front emitting led light source towards sideFace 8B, causes that the situation of light loss etc. is more. This be because, positive emitting led luminosityBeing distributed in light-emitting area is roughly isotropic in direction, so the light of about half is to side surface partThe rightabout of 8B is luminous. Therefore, must make more light towards side surface part 8B reflection, foldingMore than penetrating 90 degree. Such optics complexity, scale are large, and mostly can cause moreLoss. Also can consider only to increase the LED light source nearest apart from side surface part 8B and tackle,But mostly can not get the space of the LED of configuration quantity sufficient.

So the lighting device 1 in present embodiment, uses side-emitting led light source conductThe LED light source 3B nearest apart from side surface part 8B, has and makes from this side-emitting led lightThe further leaded light of light of source 3B is near the second optics 6 side surface part 8B. By usingSide-emitting led light source is as the LED light source 3B nearest apart from side surface part 8B, major partLight luminous to side surface direction. And then, since the less side surface part 8B of direct irradiation area, instituteUse second transmitting of optics 6 to side-emitting led light source with light guide section to becomePhotoconduction light and near side surface part 8B the structure of emergent light.

Optical system is described in detail with Fig. 6. Fig. 6 (a) is of A-A' cross section of Fig. 1The enlarged drawing dividing, Fig. 6 (b) is the B-B' cross section of Fig. 1. The first optics 5 and the second lightMember 6 is connected by optics connecting portion 4. The height 4H of optics connecting portion is less thanThe height 5H of one optics and the height 6H of the second optics. The first optics 5 HesThe second optics 6 must be higher than LED light source 3A, 3B. The height of optics connecting portionDegree 4H is made as lower in order not block from the emergent light of each optics. In addition, by beingThe height 4H of optics connecting portion is lower than the first optics 5 or the second optics firmware 6,Can realize the lightweight of composite optical component 7. For example, front emitting led light source 3ABe highly 1mm degree, the height of side-emitting led light source 3B is the feelings of 1.5mm degreeUnder condition, the height 5H of the first optics is 5mm degree, the height 6H of the second opticsBe 3mm degree, the height 4H of optics connecting portion is 1.5mm degree.

The lens of the first optics 5 are from the plane of incidence 5A incident light of sphere, from aspheric surfaceThe wide-angle lens (than the more lens of wide-angle ground diffused light of spherical lens) of exit facet 5B emergent light.Use wide-angle lens to have 2 points as the reason of the lens of the first optics 5. The first, diffusionFor example, in the higher situation of cover total light penetration of 8 (be greater than 50% situation under), if rightThe incidence angle of the face portion 8A of diffusion shell 8 is larger, because seeing through of face portion 8A only existsThe scattering in incidence angle with peak value sees through Luminance Distribution, so the luminous intensity distribution of lighting device 1 also becomesExtensively. The second, when the uniform-illumination of wide-angle emergent light, diffusion shell 8, from the light of diffusion shell 8Outgoing position distribution is also even. In the situation of diffusion shell 8 uniformly light-emittings, outside lighting device 1Table presents soft illumination, gives the good-looking impression of user, and then can part not brighter, so dizzyLight also reduces. Therefore, make the uniform-illumination of diffusion shell 8 be lighting device optical design oneIndividual problem.

Record light RAY20 as ray tracing example. From the center of lens to plane of incidence 5AThe light of incident, is not reflected and to exit facet 5B straight ahead, wide-angle on exit facet 5B(the larger angle direction of angle at the normal that departs from lens installed surface (is side in this situation on groundFace direction)) be subject to reflecting and outgoing. In fact, because light-emitting area 3AE has width, soExist from the utilizing emitted light beyond lens centre, this utilizing emitted light is also subject to necessarily on plane of incidence 5ARefraction. Because plane of incidence 5A is sphere, so in the design of aspheric exit facet 5B,Can suppose that light designs from the center propagation of lens. Can not consider the folding on plane of incidence 5APenetrate, correspondingly can easily design the refractive direction of light, precision is controlled well.

In addition, above-mentioned light-emitting area 3AE has width, so plane of incidence 5A is upper to be sent out in order to reduceThe impact of raw refraction, preferably making plane of incidence 5A is large as far as possible sphere, than light-emitting area 3AEThe sphere of the larger radius of the half of width better. In the situation of sphere, because the portion increasingPoint can not affect optical system, so preferably to make plane of incidence 5A be large as far as possible sphere and makeThe thickness attenuation of mirror, carries out lightweight thus. In the viewpoint of mouldability, preferred lens thickDegree is taking 1.0mm degree as lower limit. , preferably the radius of sphere is the width than light-emitting area 3AEThe larger radius of Thickness Ratio 1.0mm of larger, the lens of half.

As shown in Figure 6 (a), the second optics 6 is from plane of incidence 6A and plane of incidence 6A' incidentLight, incident light leaded light from exit facet 6B emergent light in light guide section 6L. Represent in the drawingsRAY2, RAY3, RAY4 are as ray tracing example. RAY2 represents the incident from plane of incidence 6A'Light on prism facets 6C described later, reflect and from the light of exit facet 6B outgoing. RAY3,RAY4 is the light from the light of plane of incidence 6A incident from exit facet 6B outgoing, two lightMain direction of propagation Dou Shi side lateral direction X, but RAY3 represents the outgoing to frontal ZLight, RAY4 represents to the rightabout of frontal Z to be the light of ceiling direction outgoingLine. As shown in Figure 2, from the side surface part of the light direct irradiation diffusion shell 8 of exit facet 6B outgoing8B. Therefore, by using accordingly and there is light guide section 6L with side-emitting led light source 3BThe second optics 6, can direct irradiation side surface part 8B, can increase lighting device 1Indirect light. And then, in this structure, almost there is no the loss in light guide section 6L, and with being different fromThe mode of this structure is repeated multiple times anti-on substrate 2 and diffusion shell 8 after using LED light source luminousPenetrating scattering and propagate and the situation of irradiating side surface part 8B is compared, is the structure that has reduced light loss.

About the feature of the second optics 6 in present embodiment, explanation successively. First,With side-emitting led light source 3B accordingly, dispose with corresponding to front emitting led light sourceDifform the second optics 6 of the first optics 5 of 3A. In addition, from the second lightThe photometric distribution of the emergent light of member 6 is and the light of the emergent light from the first optics 5The structure that degree distribution is different.

With the emergent light of the first optics 5 from corresponding to front emitting led light source 3ACompared with the emergent light of the second optics 6 from corresponding to side-emitting led light source 3BThe more mode of light beam towards frontal Z forms optics. In addition, with from secondThe emergent light of optics 6 compared with emergent light from the first optics 5 towards side sideTo the more mode of light beam form optics.

This is to be used in the peaked front on frontal Z with luminous luminosity and to send out in order to realizeThe wide scope of light LED light source 3A irradiate diffusion shell face portion 8a, be used in side surface direction and have and send outThe side surface part 8b of the peaked side-emitting led light source 3B cover diffusion shell of light luminosityThe structure of optical system, be to come from the angle of the anaclasis of each LED light source by reducing to makeReduce specular scattering number of times, reduce the structure of light loss by direct irradiation diffusion shell 8.

The second optics 6 has light guide section 6L. Make side surface part 8B incident to diffusion shellThe effective method that light beam increases is to make LED light source approach the side surface part 8B of diffusion shell. ?Between the end 2E and the side surface part 8B of diffusion shell of substrate 2, in order to be provided for diffusion shell8 are fixed on the fixer (not shown) on framework 11, need certain space (with reference to Fig. 2).Therefore, LED light source has the approaching limit. Particularly, make the end 2E of substrate approach diffusion shellThe situation of side surface part 8B under, must expand substrate 2. Expanding substrate 2 can make material cost carryHeight, and industrial waste increases. In addition, can not be not as heat radiation below substrate 2The framework 11 of path. Therefore, expand in the situation of substrate, need to correspondingly expand framework with it11 plane 11A, makes rake 11B approach diffusion shell 8. In this situation, be difficult to especially reallyGuarantee in the space that above-mentioned fixer is set.

So, there is this structure of light guide section 6L, by for from being positioned at away from side surface part 8BThe light of locational LED light source, with light guide section 6L leaded light near side surface part 8B and from going outPenetrate aspect-oriented portion 8 emergent lights, can bring into play the side surface part 8B incident of effective increase to diffusion shellThe effect of light beam. In addition, even because leaded light does not almost have light loss yet in light guide section 6L,So can bring into play the light that there is no light loss and effectively increase the side surface part 8B incident to diffusion shellThe effect of bundle.

This structure is that the optics corresponding with certain LED light source has light guide section, light guide section 6LOutside leaded light by from light to side surface direction, light from exit facet 6B to side surface direction outside X outgoingStructure. Below also the outside of side surface direction (direction) is called to side lateral direction or sideDirection outside. These are all the directions that is recited as in the drawings side lateral direction X.

Exit facet 6B is the face relative with plane of incidence 6A, with plane of incidence 6A almost parallelFace. Because be relative with plane of incidence 6A and vertical with making photoconduction direction of light face, soEven without light-output unit, also from exit facet 6B emergent light. For example,, if there is no light-outputUnit, light can be from not vertical with plane of incidence 6A and go out with the face that makes photoconduction direction of light levelPenetrate.

As shown in Figure 6 (a), with the LED light source of having installed corresponding to the second optics 6In the cross section of the normal parallel of the substrate of 3B, the exit facet shape of the second optics 6 is straight lines,And be the straight line parallel with plane of incidence 6A. Make the thickness of exit facet and the thickness of light guide section 6LIn the equal situation of 6H, in the situation that this exit facet shape is straight line, on exit facet 6B, reflectAnd the light that returns to plane of incidence 6A tails off, and then this exit facet shape is parallel with plane of incidence 6AThe situation of straight line under minimum. Make this exit facet be shaped as circle or on exit facet, reflect when ovalAnd the light that returns to plane of incidence 6A becomes many. Back light is again from exit facet outgoing and irradiate side surface partThe probability of 8B is lower. Therefore, in order effectively to increase the light towards the side surface part 8B of diffusion shellBundle, preferably makes this exit facet be shaped as straight line. Particularly, the straight line parallel with plane of incidence 6AIn situation, be the minimum structure of back light, be more preferably the straight line parallel with plane of incidence 6A.

The exit facet 6B of the second optics 6 is positioned at the 2EGeng Kao side side, end than substrate 2Laterally. By such configuration exit facet 6B, can further effectively increase towards diffusion shellThe illumination beam of side surface part 8B. This is because exit facet 6B is positioned at the end 2E of substrate 2The situation of inner side under, can be in substrate 2 reflections from the roughly half of the light of exit facet 6B outgoing.On substrate 2, the light of reflection is propagated to frontal Z, and not to the phase negative side of frontal ZTo propagation. And then reverberation is propagated in diffusion, so also have more light to diffusionThe face portion 8A of cover propagates. Therefore, in order effectively to increase the side surface part 8B towards diffusion shellLight beam, by exit facet 6B being configured in to side surface direction outer of the end 2E of substrate 2Side, can effectively suppress emergent light and on substrate 2, reflect and reduce the light towards side surface part 8BBundle.

For example, the light RAY4 shown in Fig. 6 (a) is towards side surface part 8B, if but outgoingFace 6B, on substrate 2, exists light RAY4 to reflect on substrate 2, is not towards sideThe 8B of portion but towards the possibility of face portion 8A. Substrate 2 surfaces are by whites such as white diaphragmsIn the situation that optical system covers, higher towards the possibility of face portion 8A.

Therefore, by exit facet 6B being configured in to the side surface direction outside of end 2E of substrate 2,Can fundamentally eliminate the reflection on substrate 2, so can effectively be increased towards expansionThe effect of the light beam of the side surface part 8B of loose cover.

Exit facet 6B is reached in the situation in outside of substrate 2, exist and guarantee for arrangingState the problem in the space of fixer, but the outside of the plane 11A needing only at framework 11 configuresPenetrate face 6B, so do not need to change the shape of framework 11. And, as long as and fixatorTool is correspondingly adjusted the length of light guide section 6L, so no problem.

Then, describe from the method for the photoconduction light of plane of incidence 6A' incident effectively making. EnterPenetrate face 6A relative with the light-emitting area 3BE of side-emitting led light source 3B, radiative large portionDivide from plane of incidence 6A incident light. On the other hand, plane of incidence 6A' is vertical with light-emitting area 3BEFace is the face that departs from the emergent light institute incident that the angle of normal direction of light-emitting area 3BE is larger.Seeing on the whole lessly from the light beam of plane of incidence 6A' incident, is 20% degree of entirety but existThe situation of light beam. Therefore, the optical unit to side surface direction leaded light is set.

Become with the normal direction of light-emitting area 3BE roughly 45 degree angles prism facets 6C corresponding toLight-emitting area 3BE exists. Prism facets 6C makes from the light of plane of incidence 6A' incident to exit facet 6BThe optic shape of direction total reflection. Prism facets 6C is as long as incline to the normal direction of light-emitting area 3BETiltedly just can bring into play effect, but preferably and this normal angulation be 20 degree above, less than 70Degree, roughly 45 degree are best. Too small not anti-on prism facets 6C with this normal angulationThe light of penetrating but see through to frontal Z is more. Larger with this normal angulation, prismFace 6C is larger on frontal, so the thickness 6H of light guide section 6L is larger. If significantlyIt is heavy that thickening can become, so, be preferably less than 70 degree degree with this normal angulation.

Be all-trans to exit facet 6B direction from the major part of the light of plane of incidence 6A' incident because makePenetrate, so will make prism facets 6C overlap with plane of incidence 6A'. If light-emitting area 3BE and plane of incidence 6AThe distance situation that is G0 under, preferably make the projection of the normal of prism facets 6C to light-emitting area 3BEBe greater than apart from G0.

As described in the explanation of the LED light source of Fig. 5 before, most of light is from light-emitting area 3BE outgoing,But framework 37 makes a part of light transmission, so from the overall light leak of framework 37. Particularly, from frameThe position light leak that body 37 is thinner. Also light leak of the face of the frontal of side-emitting led light source 3B.In order to make this light leak reflection leaded light, establish the face of the frontal of side-emitting led light source 3BThe width of the side surface direction situation that is WLG under, preferably make prism facets 6C to light-emitting area 3BEThe projection of normal be greater than (apart from G0+ width W LG).

Then, about the first optics 5 and the second optics 6 use optics connecting portions 4The composite optical component 7 connecting and composing describes. By connecting with optics connecting portion 4The first optics 5 and the second optics 6 can be brought into play multiple effects, describe in turn.

Fig. 6 (b) is the B-B' sectional view of Fig. 1, has mainly represented front emitting led light source3A, the wide-angle lens as the first optics 5, optics connecting portion 4, the second opticsParts 6. But, because be the ground that the LED light source 3B not corresponding with the second optics 6Side, thus on the second optics 6, there is not plane of incidence 6A, 6A', and there is exit facet 6B.In addition, represented that light RAY5, light RAY6 are as ray tracing example. In way, use dotted line tableThe light RAY6' showing is to be illustrated in light RAY6 in the situation that there is no optics connecting portion 4The light of the direction of propagating.

In this structure, as shown in light RAY5, light RAY6, the going out of the second optics 6Penetrating face, is also that emitting led 3A connects to the first optics 5 incidents and at optics from frontThe face of the light outgoing that connects leaded light propagation in portion 4 and come. If there is no optics connecting portion 4,As shown in light RAY6', from be positioned at substrate 2 inner side the first optics 5 outgoing and expandLoose, so the light beam of the side surface part 8B of direct irradiation diffusion shell is less.

Thereby, by connect the first optics 5 and the second optics with optics connecting portion 4Parts 6, can make radiative one of the LED light source 3A corresponding with the first optics 5Part is transmitted to the exit facet 6B of the second optics 6, direct irradiation side surface part 8B, and performance increasesThe effect of the indirect light of large lighting device 1. In addition, because propagate by leaded light, so also send outWave the effect that suppresses light loss direct irradiation side surface part 8B.

The height 4H of optics connecting portion is less than the height 5H of the first optics. This also hasThe light-weighted effect of optics connecting portion 4, but also have in addition optic meaning. ForMake light leaded light in optics connecting portion 4, propagate to the reflecting surface 4C of optics connecting portionLight, must meet according to Snell law derive total reflection condition. If optics connectsThe refractive index of portion 4 is n_m, the situation that the angle that departs from the normal of reflecting surface 4C is incident angleUnder, for leaded light, incidence angle must be to be greater than to use sin^-1(1/n_m) angle of the critical angle of trying to achieve.

For example, the resin critical angles such as Merlon or acrylic resin are 40 degree left and right, soIn the utilizing emitted light of the LED light source 3A corresponding with the first optics 5, departing from installation LEDThe angle of the normal of the substrate 2 of light source 3A is in the situation at light source light distribution angle, has at least light source to joinOptic angle 0 is spent the not leaded light of light to 40 degree, so will make it from the first optics 5 outgoing. ExcellentChoosing spends to the light of 60 degree light source light distribution angle 0 to irradiate diffusion shell from the first optics 5 outgoingFace portion 8A, preferably make its light leaded light with upper angle irradiate side surface part 8B. In order to makeThe light that is less than the light source light distribution angle of certain angle can, to 4 incidents of optics connecting portion, not needMake the height 4H of optics connecting portion be less than the height 5H of the first optics.

The height 4H that makes optics connecting portion is the height that is less than the height 5H of the first opticsSpend, can bring into play the effect of the angle of controlling the light to 4 incidents of optics connecting portion, energyThe enough light incident that only makes leaded light in optics connecting portion 4, so performance reduces optics portionThe effect of the light that becomes veiling glare after 4 incidents of part connecting portion and lose.

Then, about because of composite optical component 7 coated electrodes 40, in the time pulling down diffusion shell 8,Can be prevented the effect this point that people touches the protective cover that electrode 40 gets an electric shock describes. AsShown in Fig. 6 (a), composite optical component 7 for by the light from the first optics 5 toThe exit facet 6B leaded light of two opticses, and cover the first optics with composite optical component 75 to exit facet 6B. The mode that now also can not touch with people has covered electrode 40.

Composite optical component 7 does not have in the situation of coated electrode 40, for coated electrode 40 needsWant miscellaneous part, the shadow that these parts can occur become composite optical component 7 causes optical interferenceProblem, can not there are the problems referred to above so composite optical component 7 coated electrodes 40 can be brought into playEffect.

Fig. 7 is the figure for describing electrode 40, electrode 40' and composite optical component 7 in detail, figure7(a) be front elevation, Fig. 7 (b) is the G-G' sectional view in Fig. 7 (a). G-G' cross section isThe cross section of the track along ray tracing example RAY7 in composite optical component 7. Fig. 7 (a)In, the mounting terminal of electrode 40, electrode 40' and LED light source determines shape accordingly, configurationIn the outside of LED light source. Dispose composite optical component 7 in the mode of coated electrode 40. ThisOutward, because also there is the back side 7R of composite optical component, institute on the face relative with electrode 40With the light from LED light source 3A leaded light, as shown in Figure 7 (b) shows, can be not on electrode 40Reflection, loss ground are by the position 7R relative with electrode 40. By using composite optical component 7Coated electrode 40, not only can bring into play the effect that prevents the protective cover getting an electric shock, and also can bring into play energyEnough effects that reduces the light of reflection, scattering on electrode 40.

And then the quantity of the LED light source that lighting device 1 comprises exceedes in the situation of dozens of,Carrying out installation, the location of optics need to expend time in, in the viewpoint of power saving and operating costOn not preferred. And the lighting device of installing on ceiling is for compared with Geng Guang room, roomBetween in the situation of purposes, roughly need LED light source more than dozens of.

But, in the situation of the composite optical component being combined into multiple opticses, Neng GoufaWave the effect that installation exercise number of times reduces. And then, as present embodiment, by once becomingType is manufactured in the situation of all opticses, the required time is installed and significantly improves. In addition have,In the situation of multiple optics, energy is installed in the situation of one-time formed composite optical componentEnough performances do not have the effect for the optics setup error of corresponding LED optics.

Then, about having front emitting led light source 3A and side-emitting led light source 3BOptical system in the configuration of LED light source describe. As mentioned above, side-emitting ledLight source 3B for direct irradiation side surface part 8B preferred disposition in outermost. In addition also can,Say near the end 2E that is preferably present in substrate 2. More direct, be preferably exit facet 6BAnd between side surface part 8B, there is no barrier, emergent light can not be subject to reflection, loose in propagating on the wayPenetrate the configuration that arrives side surface part 8B. On this basis, about front emitting led light source 3AConfiguration, illustrate with Fig. 1.

The distance B 3L recording in Fig. 1 is the distance from center C to side-emitting led light source 3BFrom. Distance B 2L is that to approach the nearest front of side-emitting led light source 3B most emitting ledThe distance of light source 3A and center C. Distance B 1L is positioned at this nearest front emitting led light sourceThe front emitting led light source 3A of the inner side of 3A and the distance of center C. But, be arbitrarilyLED light source is all predetermined distance between the roughly the same LED light source of color.

As mentioned above, make diffusion shell 8 uniform-illumination, become neat do not have uneven luminousFace, minimizing dazzle are important problems. Because the frontal of side-emitting led light source 3BUpper transmitting light beam is less, can produce the diffusion shell of the frontal of side-emitting led light source 3BThe illumination step-down of face portion 8B and dimmed problem. Therefore, in order to improve the uniformity of illumination,Near configuration front emitting led light source 3A side-emitting led light source 3B. Thereby,Side-emitting led light source 3B and approaching most between its nearest front emitting led light source 3ADistance, be less than this nearest front emitting led light source 3A be positioned at its inner side LED light sourceThe distance of 3A. But, exist in the situation of LED light source of multiple different colours, for realityThe homogenising of existing same color, the regulation of distance is roughly entered between the LED light source of same colorOK. In addition, such configuration, meet (D3L-D2L) < (D2L-D1L).

In addition, as the example of the wide-angle lens configuring accordingly with front emitting led light source 3ASon, has illustrated isotropic lens in the installed surface of LED light source 3A, but in order more to haveEffect ground homogenising, describes anisotropic lens in installed surface. For example, toroidalThe situation of lighting device under, consider in the situation of the polar coordinate system taking center C as initial point, withRadius vector direction is compared, closeer (the roughly homochromy LED light source of LED light source on azimuth directionInterval is less) configure, so from front observe situation, consider in radius vector direction and sideIn parallactic angle direction, make lens width difference and change the radiative outgoing distribution realization from lensHomogenising. In this situation, generally speaking, lens width is wide-angle ground emergent light more more,So the lens width of radius vector direction is also large than the lens width of azimuth direction.

In more general situation, closeer (the roughly homochromy LED light source interval of LED light sourceLess) the lens width of direction, dredge (roughly homochromy LED light source than LED light sourceInterval is larger) the lens width of direction large.

The various examples of the first optics 5 and the second optics 6 in Figure 16, are represented.

In Figure 16 (a), the plane of incidence 5A of the first optics 5 and the cross section of exit facet 5BShape is roughly similar shape, and the second optics 6 is the shapes with light guide section. FirstOptics 5 is to have LED light source in the center configuration of parts, makes from this LEDThe emergent light of light source reflects the shape (with reference to ray tracing example RAY21) of ground outgoing hardly. BeMake to distribute and directly become the outgoing from optics from the luminous intensity distribution of the emergent light of LED light sourceEffective shape in the situation of light. Making these parts is in the situation of wide-angle lens, at exit facet 5BLast light splitting may be because of Fresnel reflection at intralens reflection and by absorption loss waters such as substrates.On the other hand, the cross sectional shape of plane of incidence 5A and exit facet 5B is the situation of similar shape roughlyUnder, be the minimum shape of Fresnel reflection on exit facet 5B. Therefore, be this opticsThe minimum shape of loss of the light that impact causes. In addition, by the optics of this shape is joinedPut near side-emitting led light source the method for light-emitting area compared with configuring the situation of wide-angle lensThe luminosity of line direction is larger, thus can improve side-emitting led light source frontal allEven property.

Figure 16 (b) is the front elevation of other examples, and Figure 16 (c) is the A-A' in Figure 16 (b)Sectional view. In this example, exit facet 6B is positioned at the outside of the end 2E of substrate 2, but is comprisingIn the cross section of LED light source 3B and this exit facet 6B, there is the structure of space 6AR. As lightFollow the trail of shown in routine RAY22, from the light of LED light source 3B outgoing to plane of incidence 6A incident, fromExit facet 6B0 outgoing to space 6AR and propagating in air, to being positioned at the second opticsThe plane of incidence 6B1 incident of 6 outermost part, from the exit facet 6B of this part to side surface part8B outgoing. In this example, be there is no light guide section, but light propagates in air, light is from being positioned at substrateThe structure of the exit facet 6B outgoing in the outside of 2 end 2E.

Wherein, the position that has exit facet 6B is suitably fixed with the position with plane of incidence 6A.In this example, with bar-shaped position 6F connection.

In addition, can be also light from the side emitting led light source to being positioned at the second optics 6The structure of the direct incident of plane of incidence 6B1 of outermost part. In this situation, plane of incidence 6B1Play the effect of plane of incidence 6A.

In addition, the cross sectional shape of the exit facet 6B0 to space 6AR is not limited to straight line, also canThere is the lens shapes such as curve. In addition, the cross sectional shape of plane of incidence 6B1 and exit facet 6B respectivelyCan be straight line, can be also the lens shape of curve. Can be good by both combined efficienciesGround irradiates the side surface part 8B of diffusion shell.

This structure be by exit facet 6B be configured in the outside of the end 2E of substrate 2, for efficiencyIrradiate well the shape of side surface part 8B. Exit facet 6B is roughly with respect to LED light source 3B coupleClaim ground configuration. In addition the big or small 6H in the cross section of exit facet 6B, the outgoing of comparison space 6AR,The cross section of face 6B0 is larger. These features can be by being configured in exit facet 6B at the end of substrate 2The outside of the 2E of portion and make the opticses such as exit facet 6B and substrate 2 not interfere thereby obtain. CauseThis, can bring into play efficiency by the outside that exit facet 6B is configured in to the end 2E of substrate 2Irradiate well the effect of side surface part 8B.

[embodiment 2]

Fig. 8 is the figure of the structure of the lighting device for the second embodiment of the present invention is described.About the place identical with the first embodiment, description thereof is omitted. In Fig. 8, with the first embodimentDifferent places is the shape of the exit facet 6B of the second optics 6. There is of light guide sectionThe exit facet shape of two opticses 6 is not straight line, but curve. The second optics 6Exit facet shape becomes circular-arc shape. The cross sectional shape of the exit facet 6B of the second optics 6,It is the shape of the problem for solving following explanation.

The problem solving by present embodiment is described with Fig. 9 (a) to (d). Fig. 9 (a) extremely(c) be the system being formed by LED light source 3B, light guide section 6L, screen SC N, be applicable toThe optical system of phenomenon is described.

Fig. 9 (a) is in the utilizing emitted light schematically showing from LED light source 3B, at leaded lightOn the upper surface 6LA of the 6L of portion and lower surface 6LB, do not reflect, but from plane of incidence 6A to going outPenetrate directly propagation the light RAY8 to outgoing in air of face 6B, and this light is at screen SC NOn the figure of the radiant illumination distribution I0 that mirrors. This example is LED light source 3B and light guide section 6L, so there is the peak of radiant illumination distribution I0 on this central shaft in the example that central shaft 6LC is consistentValue. In order to illustrate, the x having recorded in the drawings on the screen that central shaft 6LC is with initial point identical sitsParameter XCD.

Fig. 9 (b) is in the utilizing emitted light schematically showing from LED light source 3B, from incidentAfter face 6A incident, on upper surface 6LA, only reflect 1 time, to exit facet 6B propagation and to airThe light RAY9 of middle outgoing, and the radiant illumination distribution I1 that mirrors on screen SC N of this lightFigure. This radiant illumination distribution I1 has peak value on the position of departing from central shaft 6LC, at xReference axis XCD direction upward peak departs from.

Fig. 9 (c) is the example that Fig. 9 (a) is overlapped with the light of Fig. 9 (b). Radiant illuminationDistribution I0 distributes with the radiant illumination that overlapping of I1 becomes screen. Because be the spoke that makes to have peak valuePenetrate Illumination Distribution and there is certain intervals and overlap, so can produce light and shade on screen striatedInequality. Fig. 9 (c) has only considered 2 kinds of leaded light paths, but the result of in fact most pathsOverlapped, light and shade inequality occurs in wide scope. According to the reflection that arrives exit facet from the plane of incidenceTo in the situation of leaded light way sort, there is peak value by each leaded light path in number of times, it is all heavyOn screen, there is the continuous inequality repeatedly of light and shade in credit union.

Fig. 9 (d) represents by the result of analog computation. The length of the light guide section while being calculating is50mm, with the exit facet of light guide section apart from 150mm configure the square screen of 200mm, withThe thickness of the LGP in x axle parallel direction is 3mm, and the width of LED light source is the feelings of 1mmResult under condition. The longitudinal axis represents radiant illumination (W/mm²), transverse axis represents the x coordinate on screen.Near radiant illumination maximum 0mm on central shaft 6LC, along with position is away from the ground of light and shade repeatedlyDimmed.

This phenomenon is the phenomenon occurring the parts that have light guide section in use. Light guide sectionBe 5mm to the transparent resin of hundreds of mm degree, glass, pottery etc., make light propagate this distanceFrom parts. Also there is the situation because of lighting device with the light guide section longer than 1m. Illumination dressIn the situation of putting, screen is corresponding with diffusion shell 8, on diffusion shell 8, produces light and shade. Illumination dressPut this light and shade inequality of middle generation, can make the uniformity of light-emitting area significantly deteriorated, make diffusion shell 8Design value reduce, and may produce the bright line of dazzling the eyes. In present embodiment, to reduceInequality that this phenomenon causes, the uniformity that obtains light-emitting area are problem.

At Figure 10, this phenomenon is described in further detail. This phenomenon depends on LED light source stronglyLight-emitting area 3BE and the position relationship of the central shaft 6LC of light guide section. Figure 10 (a) is and figureThe synoptic diagram of the LED light source that 9 situation is corresponding and the position relationship of plane of incidence 6A. Figure 10 (b)That the light-emitting area 3BE center of LED light source and the central shaft 6LC of light guide section are in x reference axisThe synoptic diagram of the position relationship in the situation of depart from XCD direction-0.5mm. Figure 10 (c) tableShow the light-emitting area 3BE center situation consistent with the central shaft 6LC of light guide section of LED light source,And then with x axle parallel direction on the thickness of LGP and the light-emitting area 3BE of LED light source wideSpend equal situation. Figure 10 (d) presentation graphs 10(a) to the spoke in the situation of Figure 10 (c)Penetrate illumination (W/mm²) the result of calculation of position distribution. The length of the light guide section while being calculating50mm, with the exit facet of light guide section apart from 150mm configure the square screen of 200mm,The thickness of LGP is 3mm, the result in the situation that the width of LED light source is 1mm. VerticalAxle represents radiant illumination (W/mm²), transverse axis represents the x coordinate on screen.

Solid line 10(a) be the result in the situation of Figure 10 (a), with the knot shown in Fig. 9 (d)Fruit is identical. In order relatively to represent.

Dotted line 10(b) be the result in the situation of Figure 10 (b). Known light and shade is uneven significantly to be increasedGreatly. , the feelings of the light-emitting area 3BE center of known LED light source and the misalignment of light guide sectionUneven increase under condition. Uneven because according to the order of reflection classification that arrives exit facet from the plane of incidenceThe peak value of each leaded light path and occurring. Light emitting source 3BE center and the light guide section of LED light sourceThe identical situation in center under, this peak value exists at certain intervals, at the thickness direction of light guide section(x reference axis XCD direction) is upper to be existed symmetrically with respect to central shaft. On the other hand, LEDIn the situation different from the center of light guide section of the light-emitting area 3BE center of light source, the position of this peak valuePut on the thickness direction (x reference axis XCD direction) at light guide section asymmetric with respect to central shaftGround exists. Therefore,, in the different situation in center, on screen, exist the approaching leaded light of peak value logicalRoad and peak value away from leaded light path. Peak value approaches place and becomes brighter, and peak value becomes more away from locatingSecretly. For example, there is the peak value 1 corresponding with leaded light path 1 and the peak corresponding with leaded light path 2Value 2 approaches, peak value 1 and the peak value 3 corresponding with leaded light path 3 away from situation, this situationUnder, peak value 1 becomes brighter with the intersection of peak value 2, between peak value 1 and peak value 3, becomesDarker. Therefore, in the different situation in center, as dotted line 10(b) as shown in occur significantly largerUneven.

Dotted line 10(c) be the result in the situation of Figure 10 (c), the thickness of known LGP withIn the equal situation of the width of the light-emitting area 3BE of LED light source, uneven suppressed. This be becauseAngled to some extent smooth incident on whole of plane of incidence 6A. In other words, relative with plane of incidence 6AThe width of light-emitting area of LED light source, be more than the same degree of plane of incidence 6A big or smallIn situation, uneven suppressed.

Reduce this uneven method, be with the LED corresponding with the second optics 6 has been installedIn the cross section of the normal parallel of the substrate of light source, make to have the second optics 6 of light guide sectionExit facet shape becomes the shape that is not straight line, and then can obtain greatly by becoming curveWidth improves. And then circular-arc by exit facet is shaped as, not only can eliminate inequality can alsoEnough make the angular distribution optically focused of emergent light.

But the exit facet shape with the second optics 6 of light guide section is the situation of straight lineUnder, there is leaded light and the light that comes reflects on exit facet 6B that to return to the light of plane of incidence 6A lessAdvantage. This back light is back to plane of incidence 6A, from plane of incidence 6A to contrary with exit facet 6BDirection outgoing. Therefore, do not arrive side surface part 8B, energy efficiency does not increase indirect light well. OnStating uneven distance between plane of incidence 6A and exit facet 6B is the shorter feelings of length of light guide sectionCondition (roughly not enough 15mm) is lower to be reduced, less in the distance of exit facet 6B and diffusion shell 8In situation, the position of peak value can not be differentiated on diffusion shell 8, is difficult to identification uneven. Such feelingsUnder condition, consider the less advantage of back light and make the shape of exit facet 6B become straight line, thus canEnough efficiency increases indirect light well.

With Figure 11 (a) and Figure 11 (b), back light is described herein. Figure 11 (a) is outgoingThe cross sectional shape of face 6B is semicircle, and the thickness 6LH of this half diameter of a circle 6BD and light guide section is sameFor the synoptic diagram in the situation of 3mm. Figure 11 (b) represents that the cross sectional shape of exit facet 6B isThe situation of the circular arc that central angle is larger than semicircle, and the diameter 6BD of this circular arc is greater than light guide sectionThe situation of thickness 6LH. In each figure, two ray tracing examples RAY10, RAY11 are recorded.

Light RAY10 and 11 angles that become with central shaft 6LC on light guide section 6L before reflectionDegree is equal angle. Light RAY10 is the situation of straight line at the cross sectional shape of exit facet 6BUnder, be the light not from exit facet 6B total reflection but to outgoing air. But, exit facetThe cross sectional shape of 6B is in the situation of the curve (sphere, aspheric curve) such as circle or ellipse,Total reflection and produce back light repeatedly. This is the reason of above-mentioned back light.

Reducing one of method of this back light, is to make the cross sectional shape of exit facet 6B be greater than light guide sectionThickness 6LH. The RAY11 that Figure 11 (b) records has represented this example. This effect aftermentionedSimplation validation.

Herein, illustrate and make in situation that the cross sectional shape of exit facet 6B is curve with Figure 11 (c)The minimizing of light and shade inequality. Figure 11 (c) is in the optical system illustrating with Fig. 9 (a), makesThe position relationship of the light-emitting area 3BE center of LED light source and the central shaft 6LC of light guide section becomesLight-emitting area 3BE center is departed from x reference axis XCD direction with respect to central shaft 6LCThe result of calculation of the structure (position relationship of Figure 10 (b)) of-0.5mm. This optical systemScreen is the square screen of 200mm, apart from the about 150mm of exit facet of light guide section configure.The thickness of LGP is 3mm, and the width of LED light source is 1mm. The longitudinal axis represents radiant illumination（W/mm²), transverse axis represents the x coordinate on screen.

Solid line 9(a shown in Figure 11 (c)) I0 represents that the cross sectional shape of exit facet 6B is straight lineSituation under, in the utilizing emitted light from LED light source 3B, not at the upper surface of light guide section 6LThe upper reflection of 6LA and lower surface 6LB, but from plane of incidence 6A, exit facet 6B is directly propagated alsoThe radiant illumination that the light of outgoing in air is mirrored on screen distributes.

As dotted line 11(a) I0 represents that the cross sectional shape of exit facet 6B is as shown in Figure 11 (a) showsCurve is semicircle, and the thickness 6LH of this half diameter of a circle 6BD and light guide section is all the feelings of 3mmRadiant illumination under condition distributes.

The cross sectional shape of exit facet 6B is in the situation of straight line, as solid line 9(a) I0 is shown inNear center, there is sharp-pointed peak value, but the cross sectional shape of exit facet 6B is in the situation of semicircle,As dotted line 11(a) there is mild peak value near center that I0 is shown in.

According to arriving the order of reflection of exit facet to the situation of leaded light way sort from the plane of incidence,The result that the contribution of each leaded light path is overlapped is that actual radiant illumination distributes. Exit facet 6BCross sectional shape be in the situation of straight line there is the radiant illumination of sharp-pointed peak value because overlappedDistribute, so there is light and shade inequality. But, overlapped as dotted line 11(a) and having as shown in I0In the situation of the distribution of mild peak value, can there is not light and shade inequality. Therefore, by making outgoingThe cross sectional shape of face 6B becomes the shape different from straight line, and becoming curve is circular arc, can reduceUneven.

Then, the result of simulating about the effect of the minimizing inequality of this structure generation is described.In Figure 11 (d), represent result. The optical system of simulation is to have carried out Fig. 9 (d), Figure 10(d) optical system of calculating. Be apart from the about 150mm of exit facet of light guide section configureThe screen that 200mm is square, the thickness of LGP is 3mm, the width of LED light source is 1mmOptical system. The light emitting source 3BE center of LED light source and the central shaft 6LC's of light guide sectionPosition relationship, be light-emitting area 3BE center with respect to central shaft 6LC at x reference axis XCDOn the situation (position relationship of Figure 10 (b)) of depart from-0.5mm.

The longitudinal axis of Figure 11 (d) represents radiant illumination (W/mm²), transverse axis represents the x on screenCoordinate, has represented radiant illumination (W/mm²) position distribution. Dotted line 10(b) be Figure 10(b) result in situation is that the cross sectional shape of exit facet is the situation of straight line, for comparing.

Solid line 11(a) be the situation of Figure 11 (a), dotted line 11(b) the 4th, in Figure 11 (b)The situation that the diameter 6BD of circular arc is 4mm, chain-dotted line 11(b) the 6th, circle in Figure 11 (b)The situation that the diameter 6BD of arc is 6mm.

From Figure 11 (d), become curve by the cross sectional shape that makes exit facet 6B, inequalitySignificantly improve.

And then, the amount of the light of arrival screen, the feelings that are straight line at the cross sectional shape of establishing exit facet 6BCondition is in 1 situation, is roughly 0.8 in the situation of Figure 11 (a), diameter in Figure 11 (b)6BD is in the situation of 4mm, to be roughly 1.0, the feelings that in Figure 11 (b), diameter 6BD is 6mmUnder condition, be roughly 1.4.

While making the cross sectional shape of exit facet 6B become as shown in Figure 11 (a) shows from straight line, because returnLight echo and make the light that arrives screen amount reduce. On the other hand, make the cross sectional shape of exit facet 6BDiameter 6BD while being 4mm, back light improves, and arrives the light of screen compared with Figure 11 (a)Amount increase. , can obtain by the thickness that makes the cross sectional shape of exit facet be greater than light guide sectionThe effect that back light reduces.

And then, while making the diameter 6BD of the cross sectional shape of exit facet 6B become 6mm from 4mm,The amount that arrives the light of screen increases, and as shown in Figure 11 (d) spoke in the specific region of screenPenetrating illumination increases. This represents emergent light optically focused. Emergent light optically focused can irradiate expansion more effectivelyThe side surface part 8B of loose cover, can increase indirect light. Same phenomenon makes cutting of exit facet 6BThe diameter 6BD of face shape also can occur from 3mm becomes the situation of 4mm, but makes this straightFootpath 6BD becomes the situation of 6mm significantly from 4mm.

Thereby, be that curve reduces light and shade inequality by making the cross sectional shape of exit facet 6B, and thenReduce because becoming curve by the thickness that makes the cross sectional shape of exit facet 6B be greater than light guide sectionThe back light occurring, makes emergent light optically focused, and the side surface part 8B that diffusion shell is irradiated in performance effectively increasesThe effect of large indirect light.

Wherein, Fig. 8 has represented the second optics 6 of the cross sectional shape that is mounted to Figure 11 (b)Example.

The various shapes of the cross sectional shape of light guide section and exit facet 6B in Figure 17, are represented.

Figure 17 (a) is that the cross sectional shape of exit facet is made up of line part 6B2 and curve part 6B1Example. DL represents the distance of the front end from plane of incidence 6A to exit facet. Light guide section is from enteringThe face of penetrating is between line part 6B2.

Figure 17 (b) is the example on light guide section with inclined plane. This example is the thickness of light guide sectionThe structure of attenuation along with approaching exit facet 6B. In this situation, a part of light is upper light guide sectionOn surface 6L1, lower surface 6L2, do not meet total reflection condition, light is from upper surface 6L1, lower surface6L2 outgoing. This is to want to make exit facet not only have 6B, but effective in situation about increasingStructure. In addition, can there is thinner position, so also can lightweight.

Figure 17 (c) is the example on light guide section with inclined plane. This example is the thickness of light guide sectionThe structure of thickening along with approaching exit facet 6B. In the situation of this structure, along with light is at leaded lightLeaded light in the 6L of portion reflects the propagation side of light at every turn on upper surface 6L1 and lower surface 6L2To (angle) all towards the direction from plane of incidence 6A to exit facet 6B (side surface direction), instituteTo be the structure of the effect that collimates along with propagation of performance light.

Figure 17 (d) is that the cross sectional shape of exit facet is the example of broken line. This structure also can be brought into playSuppress the effect of light and shade inequality.

Figure 17 (e) is the example that the cross sectional shape of exit facet is made up of multiple optic shape, is to use3 interarea lens 6B3 shapes form the example of exit facet 6B. For example, also there is exit facet 6BIt is the situation of fly lens etc. By using multiple optic shape, can with everybody of exit facetPut and correspondingly control detailed shooting angle distribution. This structure can be brought into play inhibition light and shade inequalityEffect.

[embodiment 3]

Figure 12 is the figure of the structure of the lighting device for the 3rd embodiment of the present invention is described.About the place identical with the first embodiment, description thereof is omitted. The ground different from the first embodimentSide is at the optics connecting portion 4 that connects the first optics 5 and the second optics 6On light-output unit 4E this point is set, with in the following table of the light guide section 6L of the second opticsOn face 6LB, arrange light-output unit 6LE, light from the upper surface 6LA outgoing of light guide section 6L,The upper surface 6LA of light guiding surface 6L plays the effect this point of the second exit facet.

This is for the part by making leaded light light also derives on frontal Z, and in distanceOn LED light source cap assembly at a distance, also make sufficient light arrive, improve the photograph of diffusion shell 8Spend inhomogeneity structure.

Light-output unit 4E and light-output unit 6LE can be on the faces of the frontal of each partsExist, on the face relative with this face, exist also and can derive light to frontal Z.

The second optics 6 has light guide section, in the absence of light-output unit 6LE, comesFrom the emergent light of LED light source 3B during to the second optics 6 incident, beyond back light from going outPenetrate face 6B outgoing, so not luminous on the frontal of light guide section 6L. Therefore, be positioned at and leadThe face portion 8A of the diffusion shell on the frontal of the 6L of light portion may be dimmed. On the other hand, expandThe side surface part 8B of loose cover brightens because of the light from exit facet 6B. In order to reduce this light and shade notAll, in the LED light source 3B outside of the second optics 6, configuration light-output unit 6LE,Make exit facet become 6LA and two faces of 6B. For example,, by coming as shown in light RAY12Reduce this inequality from the light of exit facet 6LA. The shape of the light guide section of the second optics 6 exceptExit facet is, beyond the situation of 6LA and two faces of 6B, can be also exit facet as shown in figure 12Be two wedge-likes more than face, but be not limited to this.

As long as the light-output unit 4E of optics connecting portion 4 is present between LED light source 3,Just can realize the effect of homogenising. For example, as shown in light RAY13, be particularly positioned at sideNear face emitting led light source or side-emitting led light source and front emitting led light source itBetween time, can bring into play larger effect.

This be because, side-emitting led light source is not luminous to the normal direction of installed surface, soThe diffusion shell that is positioned at this normal direction may be dimmed. Near side-emitting led light source, existing shouldWhen light-output unit 4E, there is the light of diffusion shell direction, so can effectively suppress uneven.

In addition, the light-output unit 4E of optics connecting portion 4 and light-output unit 6LE, canTo consider the whole bag of tricks. What for example, can to enumerate additional cross section be as shown in the figure prism shapeConcavo-convex, additional sphere, aspheric lenticular concavo-convex, prints white scattering point etc.

[embodiment 4]

Figure 13 is the figure of the structure of the lighting device for the 4th embodiment of the present invention is described.About identical with the first embodiment local or there is the place of identical function description thereof is omitted. WithThe place that the first embodiment is different, is that normal and the frontal Z of substrate 2 is not parallel, basePlate 2 is to inclination this point outside side surface direction. In this example, in side surface direction, be positioned at outermostLED light source be not side-emitting led light source, but use front emitting led light source.In addition, for efficiency is irradiated the side surface part 8B of diffusion shell 8 well, with this LED light source 3BBe provided with accordingly the second optics 6. The second optics 6 does not have light guide section, is and firstThe variform optics of optics 5.

By substrate 2 is tilted, the throwing of the light-emitting area of front emitting led light source to side surface directionShadow increases. Therefore, all LED light sources on substrate 2 all contribute to irradiate side surface part 8B. LightLine RAY14 has represented the light towards side surface part 8B from the first optics 5.

Herein, the LED light source 3A corresponding with the first optics 5 and with the second opticsThe LED light source 3B of 6 correspondences can be identical LED light source, can be also different LEDLight source.

And then the second optics 6 is to be designed to compare side surface part with the first optics 5The larger parts of luminous intensity distribution (or light beam) of 8B, by this component efficiencies well to diffusion shell 8Side surface part 8B emergent light (with reference to light RAY15).

In addition,, in this example, the second optics 6 is at the face vertical with the normal direction of substrate 2In interior direction, become asymmetrical shape. Face to emergent light outside side surface direction and to side surface directionIn the face of inner side emergent light, the cross sectional shape difference in the cross section of normal that comprises substrate 2.This be because to emergent light outside side surface direction in the face of the more light of side surface part 8B outgoing, and rightInside side surface direction, the face of emergent light and the first optics 5 together make face portion 8A homogenising.

The effect of optics connecting portion 4 with in the first embodiment, illustrate identical. By usingOptics connecting portion 4 connects the first optics 5 and the second optics 6, can make andA radiative part of the LED light source 3A of one optics 5 correspondences is transmitted to the second opticsThe exit facet 6B of parts 6, direct irradiation side surface part 8B, performance increases the indirect of lighting device 1The effect of light. Now, on the end of composite optical component 7, approach the position of side surface part 8B mostPut not the always exit facet 6B of the second optics 6, and may be optics connecting portion 4The end in side surface direction outside. Thereby, connect the first optics 5 with optics connecting portion 4With the second optics 6, not only from exit facet 6B, also from the side of optics connecting portion 4The end emergent light in direction outside, can bring into play the effect of the indirect light that increases lighting device 1.

[embodiment 5]

Figure 14 is the front of the structure of the lighting device for the 5th embodiment of the present invention is describedFigure is the figure of the normal direction observation of the substrate 2 from LED light source 3A, 3B are installed. AboutIdentical with the first embodiment local or there is the place of identical function description thereof is omitted. PositiveThe definition of direction Z and side surface direction with in the first embodiment, illustrate identical.

Figure 15 (a) is the sectional view of the A-A' that records of Figure 14. This cross section is and LED has been installedThe face of the normal parallel of the substrate of light source 3A, 3B. Figure 15 (b) is the B-B' that Figure 14 recordsSectional view.

The points different from the first embodiment are outer shape. The first embodiment is observed from frontOuter shape be round, on optics, in side surface direction face, be roughly isotropic. The opposing partyFace, the outer shape that this example is observed from front is rectangle. The first embodiment to the four is implementedThe concept of the present invention illustrating in mode, for present embodiment also suitable Design and optimizationAnd apply. The present invention just can obtain increasing indirect light, make diffusion shell 8 without regulation profileIllumination becomes the effect that there is no uneven uniform distribution. As one example, in present embodimentThe outer shape that middle explanation is observed from front is rectangular situation.

The inner side that the great majority of LED light source 3A are configured in LED light source 3B (approaches center COne side). A part is near of LED light source 3B, exist near the end 2E of substrate 2.In the distribution on the whole of substrate 2, configure in the mode around center C. LED light source 3A isFront emitting led light source. First optics 5 corresponding with this light source is wide-angle lenses, carriesThe uniformity of high diffusion shell 8.

The great majority of LED light source 3B are present near the end 2E of substrate 2, along end 2EBe configured in outside. LED light source 3B is side-emitting led light source. Corresponding with this light sourceTwo opticses 6 have light guide section. Light-emitting area 3BE is in mode luminous outside side surface directionConfiguration. Plane of incidence 6A and the light-emitting area 3BE of the second optics 6 relatively configure. From enteringPenetrate the light of face 6A incident, as light RAY2', light RAY3', light in Figure 15 (a)Shown in RAY4', in light guide section 6L propagate and from exit facet 6B outgoing. LED light source 3BBe present near the end 2E of substrate 2, so do not have between plane of incidence 6A and exit facet 6BHave the barriers such as other LED light sources, incident light can not be subject to outgoing reflectingly in leaded light way.The second optics 6 illustrating in this example, has illustrate in the first embodiment all substantiallyThe effect of feature and generation thereof, has the effect that increases indirect light.

In the second optics 6 in this example, the position 6BR corresponding with rectangular angle existedIt in front view, not angle but with the curve of fillet. While having angle on exit facet 6B, mayCorrespondingly on diffusion shell 8, produce bright line. Thereby, be polygon in the general shape of profileIn the situation of shape etc., by making the shape of the exit facet B corresponding with this angle with fillet, canSuppress the inequality causing because of angle.

Then, to connect the first optics 5 and the second optics portion with optics connecting portion 4The composite optic element 7 that part 6 forms describes. By connecting with optics connecting portion 4The first optics 5 and the second optics 6, can similarly bring into play with the first embodimentThe multiple effects that illustrate in one embodiment.

In Figure 15 (b), front emitting led light source 3A, the first optics are mainly represented5 is wide-angle lens, optics connecting portion 4, the second optics 6. But, because be notThere is the place of the LED light source 3B corresponding with the second optics 6, so the second optics 6In there is not plane of incidence 6A, plane of incidence 6A', and there is exit facet 6B. In addition, as lightThe example of following the trail of, has represented light RAY5', light RAY6''.

As shown in this light, by connect the first optics 5 Hes with optics connecting portion 4The second optics 6, can make sending out of the LED light source 3A corresponding with the first optics 5A part of penetrating light is transmitted to the exit facet 6B of the second optics 6, direct irradiation side surface part 8B,Performance increases the effect of the indirect light of lighting device 1.

In addition, because composite optical component 7 coated electrodes 40, so also can obtain pulling downWhen diffusion shell 8, prevent the effect of the protective cover of people's contact electrode 40 contacts.

Then, about having front emitting led light source 3A and side-emitting led light source 3BOptical system in the configuration of LED light source describe. As mentioned above, side-emitting ledLight source 3B is for direct irradiation side surface part 8B, and preferred disposition is in outermost. As the first enforcement sideIn formula, illustrate, because the upper transmitting of the frontal Z of side-emitting led light source 3B light beam is less,So may occur the diffusion shell face portion 8B's of the frontal of side-emitting led light source 3BIllumination reduces and dimmed problem. Therefore, in order to improve the uniformity of illumination, at lateral emittingNear the configuration front emitting led light source 3A of LED light source 3B.

Thereby, the distance between side-emitting led light source 3B and front emitting led light source 3AFrom preferably shorter than the distance between the emitting led light source 3A of front. About this example, with figure14 explanations. Distance B t1, Dt2, Dt3, Dt4 represent between the emitting led light source 3A of frontDistance. On the other hand, distance B s1, Ds2 represent that side-emitting led light source 3B is with positiveDistance between emitting led light source 3A. Substantially, preferred distance Dt1, Dt2, Dt3,Dt4 > distance B s1, Ds2. But this sign of inequality also can not set up all distances. For example,Distance B t4 > in the situation of distance B s2, also can have distance B s2 > distance B t3.

In addition for example also can say, near the number of the LED light source of side-emitting led light source 3BMetric density is higher than the number density of the LED light source at other positions of same substrate 2, also canSay on substrate 2 and exist than near the number density of LED light source side-emitting led light source 3B moreLow position.

[embodiment 6]

Figure 18 (a) is the structure of the lighting device for the 6th embodiment of the present invention is describedFront elevation is that the normal direction of the substrate 2 from LED light source 3A, LED light source 3B are installed is seenThe figure examining. About identical with the first embodiment local or there is the place province of identical functionSlightly explanation. The definition of frontal Z and side surface direction with in the first embodiment, illustrate identical.Figure 18 (b) is the A-A' sectional view that Figure 18 (a) records. In Figure 18 (b), also comprise tableShow the detailed shape of not recording in Figure 18 (a).

In this example, be that the outermost LED light source 3B that is configured in substrate 2 is positive emitting ledLight source, configures the structure of the second optics 6 accordingly with this LED light source 3B. The second lightMember 6 is to make from the major part of the light of plane of incidence 6A and 6A' incident to side lateral direction XThe structure of guiding.

As shown in light RAY23, because plane of incidence 6A is configured in the outside of LED light source 3B,From plane of incidence 6A incident only from LED light source 3B light toward the outer side, so outside sideSide direction X propagates, and from being positioned at the exit facet 6B outgoing in plane of incidence 6A outside, irradiates diffusion shellSide surface part 8B.

The feature of the second optics 6 is outsides that plane of incidence 6A is configured in LED light source 3B.And then, be the side that accordingly exit facet 6B is configured in to this plane of incidence 6A with this plane of incidence 6AThe structure in face direction outside. In this situation, from the emergent light of the first optics 5 with fromThe emergent light of the second optics 6 is compared towards the light beam of above-mentioned frontal more.

In addition be to there is light guide section 6L to make the end that light is propagated, exit facet 6B is configured in substrate,The structure of the more lateral of the 2E of portion.

To light, RAY24 describes. Light from LED light source 3B towards frontal ZRAY24 to the second optics 6 incidents, is made light to X outside side surface direction from plane of incidence 6A'The reflecting surface 6C guiding lateral direction of reflection. Light RAY24 total reflection on reflecting surface 6C.In the situation of the not enough critical angle of incident angle of the light of reflecting surface 6C, be not total reflection butFresnel reflection. About the shape of this reflecting surface 6C in following detailed description. This light is at leaded lightLeaded light from exit facet 6B outgoing in the 6L of portion, irradiates the side surface part 8B of diffusion shell. In this example,Be used in total reflection on the interface of air and parts and the Fresnel reflection method as reflection, butAlso can make its reflection with additive methods such as additional aluminium film and reflectance coatings. In addition reflecting surface 6C,Be preferably mirror reflection surface in order to make reverberation leaded light.

Present embodiment to the catoptrical reflecting surface 6C of side lateral direction X, with respect to frontDirection Z tilt approximately 45 degree. In to the catoptrical viewpoint of side lateral direction X, reflecting surface6C makes the light reflection of propagating on frontal Z, so preferably tilt with respect to frontal ZMore than 20 degree, 45 degree are best. In addition, can be also more than 45, but increase when angle secondThe size of the frontal Z of optics is larger, so not only in the viewpoint of optics, at noteIn production efficiency in molded and the viewpoint of weight, most also preferably be 45 degree degree. PreferablyScope is 30 degree to 60 degree degree.

The normal 6CN of this reflecting surface is taking frontal Z as benchmark to X outside side surface directionThe structure that rightabout tilts. This reflecting surface 6C is in order to make large from the light of LED light source 3BPart is to X reflection outside side surface direction, and with the light-emitting area 3BE of LED light source 3B relativelyConfiguration. Reflecting surface 6C is configured in the normal direction of light-emitting area 3BE.

In addition, the cross sectional shape of the reflecting surface 6C of present embodiment is rectilinear form, but is not limited toThis can be also broken line or curve. Make from LED light source 3B towards frontal Z as long as haveThe function of light to X reflection outside side surface direction. Having the face of such function, is toolThe normal that has a face tilts to the rightabout of X outside side surface direction taking frontal Z as benchmarkThe face at position.

Use the LED of front emitting led light source as the side surface part 8B of main irradiation diffusion shellIn the situation of light source, not only to X outside side surface direction, also luminous to the inside. Therefore, with makeCompare by the situation of side-emitting led light source, near LED light source towards side surface direction outsideThe ratio of the light beam of X reduces. On the other hand, to side surface direction inner side and frontal Z outgoingLight ratio increase. Thereby, for the diffusion shell of the frontal of LED light source 3B justThe dimmed problem of face 8A can be brought into play effect.

In addition, because can use with identical corresponding to the LED light source of the first optics 5LED light source, so can play simplification, the LED of the installing engineering of the substrate 2 to LED light sourceCommonization of the distribution of light source, the simplification texts of drive circuit. Particularly, if use phaseSame LED light source, in the time changing the light modulation of brightness, because electric current is identical with the relation of brightness,So can correctly change brightness with same ratio in side surface part 8B and face portion 8A.

And then, sometimes, also by suitably configuring the different LED light source of more than two kinds of colour temperature, adjustThe whole radiative color that regulates lighting device for induced current between various types of. Be somebody's turn to doWhen toning, by making the ratio of kind of color of the LED light source corresponding with the first optics 5Being in equal proportions of the kind of the color of routine and corresponding with the second optics 6 LED light source, andIn LED light source 3A and LED light source 3B, equally control the supply of various LED light sourcesElectric current, can equate the radiative color from face portion 8A and side surface part 8B thusIn time, mixes colours. For example, use colour temperature 3000K and two kinds of LED light sources of 6000KIn situation, the LED light source that the half that makes LED light source 3A is 3000K, second half is 6000KLED light source. The LED light source that the half that similarly makes LED light source 3B is 3000K,Second half is the LED light source of 6000K, makes the ratio of kind of the color of LED light source at LEDIn light source 3A and LED light source 3B, equate. To the first optics 5 and the second optics 6The LED light source of middle same color is supplied with identical electric current.

To light, RAY25 describes. Light RAY25 is tilting from frontal ZOn tilted direction from the luminous light of LED light source 3B. This light is from plane of incidence 6A' incident,Reflecting surface 6C is refraction the light example towards frontal Z above. In this example, reflecting surface 6C phaseFor frontal Z tilt approximately 45 degree. The angle of inclination of reflecting surface 6C is the situation of approximately 45 degreeUnder, make from LED light source towards the light efficiency of frontal well to X outside side surface directionReflection. On the other hand, the side towards frontal Z for the light emission direction from LED light sourceThe light of face direction inner side, also can bring into play and make this anaclasis and efficiency frontal direction Z wellThe effect of emergent light. By frontal direction Z emergent light, can bring into play and make LED light source justThe effect that the face portion 8A of the diffusion shell of face direction Z brightens.

By controlling the shape of this reflecting surface 6C, can control side lateral direction X and frontThe light beam of direction Z. For example, not straight line but broken line by making the cross sectional shape of reflecting surface 6COr the lens shape of curve, also can control.

The cross sectional shape of exit facet 6B is straight line, but is not limited to this, can use first and secondThe various shapes that illustrate in embodiment, bring into play the effect illustrating in each figure equally.

This structure is that on the position in the periphery of substrate, configuration accordingly makes from being configured in outermostThe utilizing emitted light towards frontal Z of the LED light source of side is to the optics of side surface direction guided outsideParts, this optics to the outside of side surface direction than the modular construction of the more light of inner side outgoing.Herein, the inner side of side surface direction, outside are to configure the front side of position of corresponding LED light sourceBe benchmark definition to Z. Taking this frontal Z as benchmark, the direction of propagation of light toward the outer sideIn the situation of X, be light toward the outer side. On the other hand, taking this frontal Z as benchmark,The direction of propagation of light, in the situation of inner side (directions X), is the light towards inner side. ThisPlace, is configured in outermost LED light source, refers on the position in substrate periphery the most approachingThe LED light source of the end of substrate.

In addition, the first optics 5 is with respect to configuration in the outside of side surface direction and inner sideThe shape of the position symmetry of LED light source. On the other hand, the second optics is in side surface directionOutside and inner side are the asymmetrical shapes in position with respect to configuration LED light source. In addition, secondOptics 6 is structures that its center of gravity is positioned at LED light source outside. These features are for externallyThe feature of the more light of side outgoing.

As illustrated in present embodiment, also can use front emitting led light source as with mainlyThe light source corresponding to parts of the side surface part 8B light irradiation to diffusion shell 8. , also just can useFace is emitting led irradiates side as what illustrate in the first to the 5th embodiment well with efficiencyThe parts of the 8B of portion i.e. LED light source corresponding to the second optics, if possess this enforcement sideThe lighting device of the feature of formula, just similarly efficiency is irradiated side surface part 8B well.

Then, with Figure 19, the effect of the protective cover to composite optical component 7 describes. SubstantiallyUpper, in present embodiment also as illustrated in the first embodiment, composite optical component 7 becauseSo coated electrode 40 also plays the effect of protective cover. Figure 19 is supplementary notes, special instructionThere is no the situation of complete coated electrode.

Between the second optics 6 and optics connecting portion 4, there is space 7G in Figure 19Structure. The width 7W of space 7G is the width of several mm degree, is that hand can not contact electrodeThe width of degree. Therefore, have and prevent people's contact electrode 40 and the function of the protective cover of contact.

About space 7G, no matter what material to manufacture composite optical component 7 with, the absorption of light is allBe not exclusively zero, by space 7G is set, light passed through, be improved the effect of efficiency.

In addition, in this example, arrange because of the problem on manufacturing. Answering of this routine lighting deviceClosing optics 7 use injection mo(u)ldings once manufactures. While there is the thinner position of shape, resin is notCan flow into fitly moulding. In addition, such position intensity a little less than, can breakSplit etc. Therefore, as far as possible not become the mode moulding of not enough 1mm. Minimumly also to guarantee 0.5mm.

Thinner between the second optics 6 and optics connecting portion 4. This is because it isThe structure that the normal 6CN of reflecting surface tilts to the rightabout of X outside side surface direction (is just alsoThe portion that the different optics connecting portion 4 of thickness of face direction is connected with the second optics 6Position), and there is the space for configuring LED light source 3B. Therefore be, in order to make complex lightThis part of member 7 can be excessively not thin, and deleted before this part becomes not enough specific thicknessBecome the structure of space 7G. Between the second optics 6 and optics connecting portion 4, withThe mode that on other positions in real estate, composite optical component 7 can attenuation connects. Thereby,By space 7G is set, can bring into play the effect of easy manufacture.

[embodiment 7]

Figure 20 is the cross section of the structure of the lighting device for the 7th embodiment of the present invention is describedFigure. Omit and say about identical with the first embodiment place local or that there is identical functionBright. The place different from the first embodiment is not to be to use side-emitting led light source, andTo use front emitting led light source as being positioned at outermost LED light source in side surface direction.In addition, for efficiency is irradiated the side surface part 8B of diffusion shell 8 well, with this LED light source 3BBe provided with accordingly the second optics 6.

The second optics 6 be do not have light guide section, different from the first optics 5 shapes, go outAlso different optics of the photometric distribution of penetrating light. The LED light source 3A of this routine lighting device 1,LED light source 3B is front emitting led light source. In this example, make especially to join in lighting device 1The LED light source of putting is all front emitting led light source. Corresponding with the first optics 5LED light source 3A, LED light source 3B that can be corresponding with the second optics 6 is identical, also canWith difference. In this example, establish LED light source 3A identical with LED light source 3B. In addition, in this exampleBe provided with accordingly the second optics 6 with 2 LED light source 3B in outside.

Similarly to Example 1, to increase indirect light and to make the uniform-illumination of diffusion shell 8 as mainObject. By improving near the dimmed this point of diffusion shell 8 center C of lighting device, and baseDiffusion shell 8(between end 2E and the side surface part 8B of diffusion shell of plate 2 is called diffusion shell weekLimit portion) dimmed this point, provide one to make diffusion shell 8 entirety luminous equably, and pass throughDiffusion shell periphery brightens and the luminous intensity distribution of spread illuminating apparatus 1, increases the lighting device of indirect light.

As explanation in embodiment 1, because there is fixer 51, so at lighting device 1Center can not arrange LED light source 3. Therefore near, the diffusion shell 8 center C of lighting deviceDimmed. In addition, between the end of substrate 2 2E and the side surface part 8B of diffusion shell, in order to establishPut for diffusion shell 8 being fixed on to the fixer (not shown) on framework 11, need certainSpace (with reference to Figure 20). Therefore, approaching LED light source has the limit, and diffusion shell periphery becomesSecretly.

Generally speaking,, in diffusion shell 8, near height H c center C is than the end 2E of substrateNear height H e is higher. Therefore near near, optics center C and the end 2E of substrateIn the identical situation of parts, near the light of optics outgoing center C and end from substrateNear the light of the optics outgoing 2E of portion is compared expansion more before arriving diffusion shell 8. ,Light can spread. Thereby, near center C, do not need to make light expansion with optics terrifically.For example, the luminosity peak value that mostly needs not be luminous intensity distribution exceedes the lens of 80 degree. In addition, make light mistakeWhen degree expansion, light not energy efficiency arrives near the diffusion shell 8 of center C well, can not changeThe dark portion at this position of kind diffusion shell 8. For example, establish connect most paracentral LED light source 3A withAs long as the distance of center C is Dp1, ratio ATAN(Dp1/Hc) angle of trying to achieve is widerGround, angle emergent light. Preferably at ATAN(Dp1/HC)+5 degree are to the angle of 20 degree degreeOn there is luminosity peak value.

On the other hand, near the optics 2E of end, because height H e is lower, so rightWide as far as possible scope emergent light is better.

Thereby, with the first optics corresponding to being positioned near LED light source 3A center CThe photometric distribution of 5 emergent light is compared, corresponding to being positioned at second of outermost LED light source 3BThe photometric distribution of the emergent light of optics 6 is wider, and this is for the uniform-illumination that makes diffusion shell 8Effective. This effect especially near height H c center C than the end 2E of substrate nearThe higher situation of height H e under be effective.

In this example, for 2 LED light source 3B in the outside of side surface direction, dispose the second lightMember 6. This be because, for the LED being positioned at beyond near LED light source 3A center CLight source, does not need the privileged site emergent light to diffusion shell 8, so to wide as far as possible scopeEmergent light and make the uniform-illuminationization of diffusion shell 8 better.

, configure, shining by the first optics 5 is become in the mode around center CNear the center of bright device 1, particularly approach most the optics at the center of lighting device 1,Improve near the dimmed this point of diffusion shell 8 of center C. And then, by the end along substrate2E configures the second optics 6, diffusion shell periphery is brightened and the joining of spread illuminating apparatus 1Light, increases indirect light. In addition,, in side surface direction, make the institute in the first optics 5 outsidesHave optics all to become the second optics 6, contribute to thus diffusion shell 8 overall evenlyChange.

Herein, the effect of optics connecting portion 4, has born and has illustrated in the first embodimentMultiple effects.

The quantity of the LED light source that lighting device 1 comprises exceedes in the situation of dozens of, to itWill expend time in each installation, location of carrying out optics, in the sight of power saving and operating costNot preferred on point. In addition the lighting device of installing on ceiling, is for wider compared with roomIn the situation of room purposes, roughly need LED light source more than dozens of.

But, as the example illustrated, combine the situation of the composite optical component of multiple opticsesUnder, can bring into play the effect that reduces installation exercise number of times. And then, as the example illustrated, use onceMoulding is manufactured in the situation of all opticses, the required time is installed significantly improve. ThisOutward, exist in the situation of multiple optics, one-time formed composite optical component is being installedIn situation, can bring into play the effect not having for the optics setup error of corresponding LED light sourceReally. In addition, as the example illustrated, LED light source is all front emitting led light source, LED light sourceIn the 3A situation identical with LED light source 3B, the first optics 5 and the second optics 6Although shape different, there is similar point, so easily make a mistake when mounted. Therefore,One-time formed composite optical component is effective because of this example.

The configuration of this routine LED light source then, is described with Figure 21 (a). Figure 20 has drawn and has saidBright required Min., about LED configuration, more elliptically remembers than the situation of Figure 21 (a)Carry. For example, as described later, although the LED light source of Figure 21 (a) is with 7 concentric circles groundConfiguration, but in Figure 20, be depicted as 3 concentrically ringed sectional views. And then, right in Figure 21 (a)Color described later is illustrated, but in Figure 20, does not record the information of the color of LED light source.This is to become complicated for fear of Figure 20 and explanation. Figure 21 (a) about the configuration of LED light source,Color is recorded in order to illustrate in further detail.

Figure 21 (a) is that the normal direction of the substrate 2 from LED light source 3A, 3B are installed is observedFront elevation. Substrate 2 is to be divided into circle 4 identical substrates of shape configuration of 4 parts. FigureIn only a substrate has been drawn to optics. Optics and each LED light source configure accordingly.Optics 501 and 502 is first opticses 5 that shape is identical, corresponding LED light sourceColor difference. Optics 601 and 602 is second opticses 6 that shape is identical, correspondenceThe color difference of LED light source.

In Figure 21 (b), represent the enlarged drawing of the first optics. As shown in Figure 21 (b),Shape the situation that the first optics 5 is observed from the normal direction of substrate 2 is isotropism, front view is circular.

The enlarged drawing of the second optics 6 represents in Figure 21 (c). The second optics 6 fromShape in the situation that the normal direction of substrate 2 is observed is anisotropic, and front view is roundShape with straight line formation. Herein, the shape of the front view of the second optics 6 does not limitIn circle and straight line. Also can be curve, also can form with broken line. For convenient, consider withWhen center C is the polar coordinate system of initial point, the second optics 6 radius vector direction Rdir and with thisThe azimuth direction Cdir upper section shape difference that radius vector direction is vertical, azimuth direction (circumferenceDirection) width 6W2 larger than the width 6W1 of radius vector direction. In addition, in other words, LEDThe width of the compact arranged direction of light source (azimuth direction) compares the direction vertical with this directionWidth is larger.

Each LED light source is round center C. Same optical components with the distance of center C roughlyEqual toroidal configuration. In this example, with 7 identical concentric circles configuration LED light sources of center.If each concentrically ringed radius is Dp1～Dp7. Record in the drawings each circle with dotted line.

Approaching most on the circle of center C, disposing the first optics 501,502. Outside itOn the circle of side, dispose the second optics 601,602. In addition be to be positioned at outermost,The photometric distribution of the emergent light of two opticses 601,602 is than near the first light being positioned at center CThe wider structure of photometric distribution of the emergent light of member 501,502, and be for making diffusionThe effective structure of uniform-illumination of cover 8. Reason is with identical by the reason of Figure 20 explanation.

In addition, the second optics 6 with approach most the circle of center C beyond round corresponding. Change speechIt is the first optics 5 in the end of center C one side that approaches substrate with around center CMode configure, with the first optics 5 around position join further from a side of center CThe optics of putting is the structure of the second optics 6.

This be because, about the optics being positioned at beyond near optics center C, noNeed to be to the privileged site emergent light of diffusion shell 8, thus to wide as far as possible scope emergent light andMake the uniform-illuminationization of diffusion shell 8 better.

Color to LED light source and the relation of configuration describe. In this example, with opticsThe LED light source of 501 and 601 correspondences is identical. In addition, with optics 502 and 602Corresponding LED light source is identical. At least from the outgoing of the first optics 501 and 502Light must colour mixture. In addition, must colour mixture from the emergent light of the second optics 601 and 602.If not colour mixture, the irregular colour of diffusion shell 8 is even, and irregular colour can occur. Thereby, forBe easy to colour mixture, preferably make the LED light source that color is different configure adjacently.

In addition use in the situation of LED light source of n look, for a kind of optics, preferably,Use n look different LED light source. This is because identical optics luminous intensity distribution is identical, instituteEasily to realize the homogenising of color. In this example, use 2 looks for first optics 5LED light source, also uses the LED light source of 2 looks for the second optics 6.

To the end 2ER1 as border between the substrate along substrate 2, the LED of 2ER2The configuration of light source describes. There are 2 limits this end, on any one limit, all along thisEnd 2ER1,2ER2, from the first optics 5 of inner side to outermost the second optics portionPart 6, the color of corresponding LED light source is alternately different. For example, a side end 2ER1In, after the first optics 501, the second optics 601,602 according to 602,601,602,601,602,601 mode, the color of corresponding LED light source is from center C to radius vectorDirection is alternately different. And then in the end 2ER2 of a contrary side, the first optics is502, be the color different from the LED light source of end 2ER1, then, the second optics601,602 according to 601,602,601,602,601,602 mode, corresponding LEDThe color of light source is alternately different to radius vector direction from center C.

In other words, form lighting devices with multiple substrates, between the substrate of substrate 2 as limitLiang Ge limit, end 2ER1, the 2ER2 on boundary are upper, from the first optics of approaching most center C toThe second optics of decentre C farthest, the color of corresponding LED light source is alternately differently joinedPut.

And then, on this Liang Ge limit, end as border, the LED configuring along a side limitThe order of the color towards the direction away from center C of light source, with the limit configuration along the opposing partyThe order difference of the color towards the direction away from center C of LED light source.

By such structure, form with identical substrate 2 in the situation of lighting device, notWith substrate between border on, even be clip this border adjacency LED light source color not yetSame structure. Therefore, even in the case of the substrate formation lighting device that uses same design,Also can suppress irregular colour.

Then describe optics in detail. First, about the cross section and of the first optics 5The cross sectional shape of the radius vector direction Rdir of two opticses 6, with Figure 22 (a) to (c) explanation.Figure 22 (a) is the sectional view of the first optics 5, and Figure 22 (b) is the second optics 6The sectional view of radius vector direction Rdir. The first and second opticses are lens, lens by with LEDThe relative inner face Lu of light source and light is formed the lens surface Lo of outgoing outside lens. Inner faceLu has rake Tp. Way in, for referential expression light RAYS. The second optics6 make from the emergent ray of LED light source to more wide-angle refraction, expansion light distribution angle.

Figure 22 (c) is the figure of the optical system for the second optics 6 is described, only have withThe inner face Lu that LED light source is relative is different from the second optics 6, is not comprise rake TpThe cross sectional shape of lens. Effect to rake Tp describes. As light in Figure 22 (c)Shown in line RayL, in the absence of rake Tp, from the light of LED light source outgoing, the utmost pointThe larger emergent light in angle is to 4 incidents of optics connecting portion leaded light.

Sometimes also to make energetically light to 4 incidents of optics connecting portion leaded light, but in this example,Do not make its leaded light but make light from by the first optics 5, the second optics 6 and opticsComposite optical component 7 outgoing that connecting portion 4 forms are one of objects. Its reason is, makes lightThe in the situation that of composite optical component 7 interior leaded light, need suitably to lead from composite optical component 7The optical system of bright dipping, inhibition light loss, in this example, such optical system is not installed in supposition,So when the composite optical component 7 interior leaded light, exist and become veiling glare and some lossPossibility.

In the second optics 6 shown in Figure 22 (b), because there is rake Tp, soLight RayL from LED light source 3B towards optics connecting portion 4, on rake TpReflect to lens surface Lo. Therefore, to the light of 4 incidents of optics connecting portion leaded light, withDo not have the situation of rake Tp to compare less. Thereby rake Tp performance suppresses optics portionThe light of 4 incidents of part connecting portion leaded light, the effect of minimizing optical loss.

Rake Tp departs from the angle of substrate normal, is 50 degree to 75 degree degree. Inner face LuIn the viewpoint of design, be preferably sphere. By being sphere, can be for from being positioned at spyThe emergent light design lens surface Lo of the spot light of allocation. But sphere is not to suppress LEDIn the emergent light of light source towards the shape of the light of optics connecting portion 4, so will make from LEDCertain of light source utilizing emitted light more than angle to the face of lens surface Lo refraction be inclined plane Tp withSphere portion connects continuously and forms inner face Lu. , the cross sectional shape of inner face Lu by curve andStraight line forms.

Make from certain of LED light source utilizing emitted light more than angle to lens surface Lo refractionThe position that face starts, in the axle of lens centre taking the height and position of the light-emitting area of LED as initial point,Suppose from the situation of this initial point emission of light, the angle that departs from this lens centre axle is roughly 70To the light of 80 degree, extend to the light with LED with the sphere of lens inner face as shown in Figure 22 (c)When the side in source relative face, (when inner face is not sphere, the end of this inner face is maintained the original state and prolongWhen long) the point that intersects of this sphere be roughly this starting point. Make more to approach substrate 2 than this starting pointThe lens interior shape of one side, becomes to the face of lens surface Lo refraction.

Consider from other viewpoint, as shown in Figure 22 (c), the sphere of lens inner face extends to and LEDWhen the side of light source relative face, (when inner face is not sphere, the end of this inner face is maintained the original stateOvertime), obtain light from above-mentioned initial point not from lens surface Lo outgoing but to optics portionThe polar angle of part connecting portion 4 incidents, for utilizing emitted light more than this polar angle, arranges and makes it to lensThe face of Surface L o refraction.

In addition, in this example, for can simple designs and to make rake Tp be straight line, but do not limit,In this, also can be designed to becomes smoothly and makes the light from LED with curve shape from sphere portionCertain of source utilizing emitted light more than angle is to the face of lens surface Lo refraction. Now, be from above-mentionedNear starting point, play the structure that bent curvature of a curve changes.

Then, about the shape of the azimuth direction Cdir of the second optics 6, with Figure 23 (a),(b) explanation. Figure 23 (a) is the figure of the azimuth direction Cdir of the second optics 6. AsShown in Figure 23 (a), the cross section of azimuth direction Cdir, at the straight line of the long Lg of central part existencePortion, other positions are identical with the cross section of radius vector direction Rdir. , Figure 22 (b) and Figure 23 (a)In, shape Loa-Lob and Lua-Lub are identical shapes. The cross section of azimuth direction CdirGrow the part of line part Lg than the cross section of radius vector direction Rdir. 6W2=6W1+Lg.

The three-dimensional shape of lens surface Lo represents in Figure 23 (b). Record in the drawings curveStarting point Loa and terminal Lob. There is the planar portions representing with Ltp at central part. As secondThe curve shape Loa-Lob of a part for the cross sectional shape of optics is on the complete cycle of lensIdentical shape.

Make the second optics 6 become the reason of this lens shape, be in order to make radius vector directionThe cross sectional shape of Rdir becomes the shape to wide-angle expansion light, and azimuth direction Cdir is becomeFor wide-angle not being expanded the cross sectional shape of light, and become this shape. First, determine radius vector directionThe cross sectional shape of Rdir, and import the straight line of long Lg at the central part of azimuth direction CdirPortion, increases the luminosity of substrate normal direction thus, reduces the light quantity of wide-angle outgoing. Do not make radius vectorWhen the cross sectional shape of direction Rdir and azimuth direction Cdir is connected continuously, can become luminous intensity distribution notContinuous characteristic and become uneven reason, so in order to make radius vector direction Rdir and azimuth sideCross sectional shape to Cdir connects continuously, and the cross sectional shape that makes azimuth direction Cdir is directlyIdentical with the cross sectional shape of radius vector direction Rdir beyond line portion.

By possess eigen, have make light distribution characteristic have in desired installed surface respectively toThe opposite sex, and radius vector direction Rdir is connected continuously with the cross sectional shape of azimuth direction Cdir,Suppress uneven effect.

Herein, illustrate make the cross sectional shape of radius vector direction Rdir become shape to wide-angle expansion light,And make azimuth direction Cdir become the not reason of the cross sectional shape to wide-angle expansion light. AboutRadius vector direction Rdir, need to expand light and diffusion shell periphery is irradiated to more light, improves notAll and increase indirect light. On the other hand, azimuth direction Cdir is upper, because in abutting connection with configuration LEDLight source, so do not need compared with extensive angle emergent light. Generally speaking, to wide-angle emergent light thoroughlyMirror has the tendency for the position deviation sensitivity between lens and LED light source, and then luminosity peak valueMay between the optics of adjacency, interfere and produce inequality. Therefore, make LED light sourceAzimuth direction Cdir in abutting connection with configuration becomes the not lens arrangement to wide-angle emergent light, suppresses thoroughlyThe optics of the inequality that the position deviation between mirror and LED light source causes and luminosity peak value adjacencyBetween interfere produce inequality.

Thereby, as shown in figure 21, be that LED light source is tight in the shape of the second optics 6The width of the direction of solid matter row, the structure larger than the width of the direction vertical with this direction. ThisOutward, the second LED light source configures with roughly circle-shaped, observes the from the normal direction of substrate 2In the situation of two opticses 6, the shape of the second optics 6 at azimuth direction Cdir andRadius vector direction Rdir is upper different, is the larger structure of width of azimuth direction Cdir. As this knotShown in structure, become from substrate by the second optics 6 that makes the end 2E that approaches substrate 2 most2 normal direction is observed anisotropic shape in the situation of these parts, suppresses above-mentioned variousAll, the spread illuminating apparatus and by diffusion shell periphery being brightened to wide-angle emergent lightLuminous intensity distribution, increases indirect light.

About the luminous intensity distribution angle of the first optics 5 and the second optics 6, use Figure 24 herein,Describe in detail. The transverse axis of the curve map of Figure 24 represents the method apart from the substrate 2 of mounting optical componentThe angle of line is polar angle. The longitudinal axis is to make photometric scale from the light of optics outgoing by all light beamsThe standardization luminosity of standardization.

The photometric distribution I1a of the first optics 5, roughly 60 degree between 65 degree, there is lightDegree peak value, in the larger angle of specific luminosity peak value, luminosity sharply declines. The first optics 5Photometric distribution I1a compared with there is no the situation of the first optics 5, so that from LED light sourceThe photometric distribution of the lambertian distribution of 3A outgoing becomes at 60 degree roughly and has luminosity peak value in directionsThe mode of photometric distribution, make light wide-angle and expand.

Same, the photometric distribution I2r of the radius vector direction Rdir of the second optics 6, roughlyOn 75 degree, have luminosity peak value, in the larger angle of specific luminosity peak value, luminosity sharply declines. ShouldPhotometric distribution I2r becomes 75 with the photometric distribution of the lambertian distribution from LED light source 3B outgoingThe mode in degree direction with the photometric distribution of luminosity peak value, makes light wide-angle and expands. With lambertThe photometric distribution (not shown) distributing is compared, and the luminosity of 0 degree is lower, the luminosity of 75 degree directionsLarger. The feature of this photometric distribution I2r, is that under the low angle of 0 degree to 45 degree, luminosity is less,On wide-angle, have with 0 degree near the peak value of the roughly equal or luminosity more than it of luminosity. LogicalCross this distribution, known to until luminosity peak value compared with extensive angle emergent ray.

On the other hand, the photometric distribution I2c of the azimuth direction Cdir of the second optics 6 is 0Degree direction is larger, along with polar angle increases and declines. But, near 80 degree, there is less peakValue. This peak value is enough little with frontal (0 degree) phase ratio, so almost do not affect. EnterAnd 50 degree are lower to the luminosity in the region of 75 degree, only near 80 degree, there is less peak value.This 80 degree compared with small leak, be the emergent light to azimuth direction Cdir, arrive diffusion shell 8Before, and to propagate longer distance compared with the emergent light of radius vector direction Rdir, so can expandFall apart and not impact. Thereby known this photometric distribution I2c and photometric distribution I2r compare narrowerScope emergent light.

The photometric distribution I2r of radius vector direction Rdir to the second optics 6 and the first optics portionThe photometric distribution I1a of part 5 compares, and the luminosity peak value of photometric distribution I2r is positioned at more wide-angle,In addition, in the region that the luminosity of photometric distribution I1a sharply declines on wide-angle, photometric distribution I2rLuminosity present higher value, so also can say in the cross section of radius vector direction Rdir secondThe photometric distribution of the emergent light of optics 6 is divided than the luminosity of the emergent light of the first optics 5Cloth is wider.

Making the first optics 5 is isotropic optics. The first optics 5 andIt is narrower that two opticses 6 are compared light distribution angle, so be difficult to occur between lens and LED light sourcePosition be offset the inequality causing. Therefore, making the first optics 5 is anisotropic lensThe necessity of shape is lower. In addition, near the dark portion outgoing to center C is as much as possibleLight, and to configure more LED light source along near the end of the substrate 2 center C. Therefore,Not to become anisotropic lens shape long on azimuth direction Cdir, but becomeIsotropic lens shape, configures LED light source as far as possible to high-density. The most approaching by makingThe optics at center becomes to be observed the situation of this optics each from the normal direction of substrate 2To the shape of the same sex, can be highly denser than the LED light source of the outside configuration at this LED light sourceDegree ground configures LED light source, becomes the structure of the light more near dark portion outgoing center C,Improve this dark portion.

Thereby, become anisotropic by the second optics 6 that makes luminous intensity distribution angle exceed 70 degreeLens shape, becomes respectively luminous intensity distribution angle first optics 5 narrower than the second optics 6To the lens shape of the same sex, the position skew that can suppress between lens and LED light source causes notAll, improve near the dimmed this point of diffusion shell 8 of center C of lighting device, and improve baseDiffusion shell 8(between end 2E and the side surface part 8B of diffusion shell of plate 2 is called diffusion shell weekLimit portion) dimmed this point. Thus, provide one to make diffusion shell entirety luminous equably, andBrighten and the luminous intensity distribution of spread illuminating apparatus by diffusion shell periphery, increase the illumination dress of indirect lightPut.

Then, about the configuration of the LED configuration in LED light source and anisotropic lensRelation, with Figure 25 (a) to (g) explanation. First, with Figure 25 (a), preferred LED is describedLED configuration in light source and the configuration relation of anisotropic lens. In this example, LED light source3B installs 3 LED30 on the installed surface 37a of framework 37. The arrow of the second optics 6The roughly the same structure of direction that footpath direction Rdir and LED30 arrange. In other words, at LEDIn light source 3B, be position distribution scope direction and the radius vector direction court grown of configuration LED30To the structure of roughly the same direction.

In LED light source 3B, from the utilizing emitted light ELD of the light-emitting area directly over LED30 with comeFrom do not have LED30 position directly over utilizing emitted light ELI color difference. At diffusion shell 8On privileged site, when a side's of utilizing emitted light ELD or ELI illumination is stronger, can there is color notAll. For improving this irregular colour, the structure of Figure 25 (a) is effective.

This is because in the situation of the optics of wide luminous intensity distribution ground emergent light, on wide-angle, comeExit direction from the light of optical component surfaces depends in the light-emitting area of LED light source 3B stronglyLuminous position. In the situation of the second optics 6, radius vector direction Rdir is to wide-angle emergent light,But azimuth direction Cdir is not to wide-angle emergent light. So, for radius vector direction Rdir direction,Even configure LED30 with luminous position variation glow color also indeclinable as far as possible mode.

Illustrate that with Figure 25 (b) to (e) LED in LED light source configures and the second optics portionThe impact that the position relationship of part causes irregular colour. Figure 25 (b) and Figure 25 (c) are Figure 25(a) sectional view of the radius vector direction of structure. Figure 25 (d) and Figure 25 (e) are at Figure 25(a) in, make the sectional view of the radius vector direction in the situation of LED light source 3B 90-degree rotation.

First, Figure 25 (b) and Figure 25 (d) are compared. Figure 25 (b) represents therefromJust in the LED of heart portion and figure, be configured in the right side of LED of central part and the LED30 in left sideThe schematic diagram of the light of top outgoing. In Figure 25 (d), make eye point and Figure 25 (b) of lightRecord in the same manner ray tracing example. The direction of propagation of light is identical in both. Figure 25 (b)Situation under, the light of outgoing is identical color in 3 light ELD. On the other hand,In the situation of Figure 25 (d) because only in center configuration LED, so from two of LEDThe utilizing emitted light of side is utilizing emitted light ELI.

Thereby, in the situation of Figure 25 (d), from the second optics 6 outgoing, color separated.From irradiating near the second optics 6 diffusion shell end 2E periphery, that be positioned at substrate 2To the distance of diffusion shell 8, compare greatly with the distance between the LED light source of adjacency, so spreadColor separated larger, occur irregular colour. In addition, to the light of wide-angle outgoing, for secondThe lens surface Lo of optics 6 is to approach the angle incident of total reflection angle, so refraction angleDepend on sensitively incident angle, color easily separates, and irregular colour easily occurs. Therefore,As shown in Figure 25 (b), for radius vector direction Rdir direction, even change and send out with luminous positionLight color also indeclinable as far as possible mode to configure LED30 be important.

And then, Figure 25 (c) and Figure 25 (e) are compared to the face that other patterns are causedLook inequality describes. The light luminous position of Figure 25 (c) and Figure 25 (e) and Figure 25 (b)Identical. Difference is from more wide-angle ground emergent light this point of LED light source.

In Figure 25 (c), the light of LED outgoing on right side directly over the LED at center and figure,In rake Tp refraction and from lens surface Lo outgoing. The light of the LED outgoing in left side from figure,In the curve part refraction of lens inner face Lu and from lens surface Lo outgoing. In these 2 pathsPropagate the also light of outgoing, the angle of outgoing has a great difference. In Figure 25 (e), the propagation of lightPath is identical with Figure 25 (c), so from the light ELD of outgoing directly over LED with from LEDRight side directly over the light ELI of outgoing, with left side from LED directly over the light ELI of outgoingDifferent angles is from lens surface Lo outgoing. Thereby, from outgoing directly over the left side of LEDLight ELI irradiates separately the ad-hoc location of diffusion shell 8, produces irregular colour.

This phenomenon also occurs on the azimuth direction Cdir of the second optics 6, but because notTo wide-angle emergent light, correspondingly irregular colour is less, and then, the upper LED of azimuth direction CdirLight source closely configures, so emergent light colour mixture and color does not occur not between the LED light source of adjacencyAll.

Thereby, make the direction vertical with the direction that approaches configuration LED light source 3B become wide-angle and joinThe lens shape of light, for this vertical direction, in LED light source 3B, makes to configure LED30The direction grown of position distribution scope become roughly the same direction, suppress thus irregular colour.In other words, using the direction grown of position distribution scope of configuration LED as LED arrangement sideTo situation under, observe the situation of the second optics 6 from the normal direction of substrate 2In the shape of two opticses 6, width ratio and the party of the direction parallel with LED orientationWidth to vertical direction is less. In addition also can say, the position distribution scope of configuration LEDLonger direction is with from the center of lighting device, direction toward the outer side configures abreast.

About the direction AL that grows of position distribution scope of configuration LED30, with Figure 25 (f) andFigure 25 (g) explanation. LED30 is as shown in Figure 25 (a), not necessarily by a row configuration. As figure25(f), exist from some line skews situation about configuring. About determining of this direction ALJustice, can define by the sidewall direction of the sidewall 37b of the framework of LED light source. Because LEDNormally rectangle of the framework of light source 3B, so the sidewall direction of sidewall 37b is 2 orthogonal sidesTo. In the situation of Figure 25 (f), in the position distribution scope of configuration LED30, with arrow in figureThe orthogonal side of direction that the direction ratio that a side of sidewall 37b that head represents is parallel and this arrow representXiang Gengchang, so can be defined as this direction of arrow direction AL.

In the situation of Figure 25 (g), the position of LED30 with respect to sidewall 37 as dotted arrow instituteBe shown on tilted direction and distribute. This dotted arrow can be used as direction AL, but for easier,Same with the situation of Figure 25 (f), determine by 2 directions of sidewall 37b, can by withThe parallel direction of a side of sidewall 37b in figure shown in arrow is defined as direction AL.

In addition, as the method for further elimination irregular colour, have at the knot shown in Figure 25 (a),In the second optics 6 illustrating in these examples such as structure, for the second opticses such as inner face LuThe exit facet of second opticses such as the plane of incidence or lens surface Lo adds has diffusible shapeThe method of shape. For example, be to there is level and smooth concavo-convex fine shape or grain shape etc. Pass throughAdd and there is diffusible shape minimizing irregular colour.

In addition,, in each embodiment described above, for the present invention is described, having used canThe shape of face portion 8A and side surface part 8B is as the shape of diffusion shell clearly respectively. But, thisInvention does not limit the shape of diffusion shell. As long as from the second optics to side surface direction outgoingLight beam increases, and in lighting device, the light beam of side surface direction will increase, and indirect light increases.

In addition,, in each embodiment described above, the feature illustrating with each embodiment canApplication independently, also can appropriately combinedly be used respectively.

In addition, each embodiment described above, is represent for the present invention is described concreteExample, but the invention is not restricted to each embodiment. For example, illustrated each in above each embodimentThe shape of parts and structure, as long as meet the function that these parts will have, will be suitable according to demandWhen design and optimization.

Claims (17)

1. a lighting device, is characterized in that, has:

Substrate; With

Multiple LED light sources of installing on electrode on described substrate,

If it is frontal that described lighting device mainly irradiates direction of light, with described frontalWhen substantially vertical direction is side surface direction,

Described multiple LED light source be main in the normal direction of described substrate the front of emergent lightEmitting led light source,

Described multiple LED light source disposes optics accordingly, with described multiple LED lightThe LED light source correspondence of the outermost configuration of the described side surface direction at described lighting device in sourceOptics, have and make towards the luminous light of described frontal to described side surface direction outsideThe position of reflection,

On the position configuring at the LED light source of described outermost configuration, described optics existsThe outside of described side surface direction and inner side are asymmetrical shapes.

2. lighting device as claimed in claim 1, is characterized in that:

The optics corresponding with the LED light source of described outermost configuration is to described side surface directionThe light of outside outgoing is more than the light of the inner side outgoing to described side surface direction.

3. lighting device as claimed in claim 1, is characterized in that:

The center of gravity of the optics corresponding with the LED light source of described outermost configuration is positioned at than describedThe LED light source of outermost configuration more leans on the outside of described side surface direction.

4. a lighting device, is characterized in that, comprising:

Substrate;

The first LED light source of installing on electrode on described substrate and the second LED light source;

First optics corresponding with described the first LED light source;

Second optics corresponding with described the second LED light source; With

Connect the optics connecting portion of described the first optics and described the second optics,

From the photometric distribution of the emergent light of described the first optics with from described the second opticsThe photometric distribution difference of the emergent light of parts,

If it is frontal that described lighting device mainly irradiates direction of light, with described frontalWhen substantially vertical direction is side surface direction,

Described the first LED light source and described the second LED light source are the main methods at described substrateThe front emitting led light source of emergent light in line direction,

Described the second LED light source is configured in compared with described the first LED light source from described illuminationThe farther position of distance at the center of device,

Comprise going out of described the second optics in the cross section at center of described the second opticsPenetrate the photometric distribution of light, and comprise described in the cross section at center of described the first opticsThe photometric distribution of the emergent light of one optics is compared wider,

Described the first optics is configured near the center of described lighting device to surround described photographThe center of bright device.

5. lighting device as claimed in claim 4, is characterized in that:

Described the first optics while observation from the normal direction of described substrate is isotropicShape.

6. lighting device as claimed in claim 4, is characterized in that:

Described the second optics is to surround described in the mode at center of described lighting device is configured inThe end of substrate,

Described the second optics while observation from the normal direction of described substrate is anisotropicShape.

7. lighting device as claimed in claim 4, is characterized in that:

The first optics while observation from the normal direction of described substrate is isotropic shapeShape,

The second optics while observation from the normal direction of described substrate is anisotropic shapeShape.

8. lighting device as claimed in claim 7, is characterized in that:

Described the second optics is configured in compared with described the first optics from described illumination dressOn farther position, Zhi center.

9. lighting device as claimed in claim 7, is characterized in that:

In the face vertical with the normal of described substrate, observe institute from the normal direction of described substrateWhile stating the second optics,

Taking the center of described lighting device as initial point, consider in the situation of polar coordinate system described theThe width of the azimuth direction of two opticses is greater than the radius vector direction of described the second opticsWidth.

10. lighting device as claimed in claim 7, is characterized in that:

In the face vertical with the normal of described substrate, observe institute from the normal direction of described substrateWhile stating the second optics,

The width of described second optics of the compact arranged direction of described the second LED light source,Be greater than described second optics of the direction vertical with the compact arranged direction of described the second LED light sourceThe width of parts.

11. 1 kinds of lighting devices, is characterized in that, comprising:

Substrate;

The first LED light source of installing on electrode on described substrate and the second LED light source;

First optics corresponding with described the first LED light source;

Second optics corresponding with described the second LED light source; With

Connect the optics connecting portion of described the first optics and described the second optics,

From the photometric distribution of the emergent light of described the first optics with from described the second opticsThe photometric distribution difference of the emergent light of parts,

If it is frontal that described lighting device mainly irradiates direction of light, with described frontalWhen substantially vertical direction is side surface direction,

Described the first LED light source and described the second LED light source are the main methods at described substrateThe front emitting led light source of emergent light in line direction,

Described LED light source is made up of multiple LED and fluorophor,

Configure direction that the position distribution scope of described multiple LED grows with from described lighting deviceThe center direction of going laterally parallel.

12. 1 kinds of lighting devices, is characterized in that, comprising:

Substrate;

The first LED light source of installing on electrode on described substrate and the second LED light source;

First optics corresponding with described the first LED light source;

Second optics corresponding with described the second LED light source; With

Connect the optics connecting portion of described the first optics and described the second optics,

From the photometric distribution of the emergent light of described the first optics with from described the second opticsThe photometric distribution difference of the emergent light of parts,

If it is frontal that described lighting device mainly irradiates direction of light, with described frontalWhen substantially vertical direction is side surface direction,

Described the first LED light source and described the second LED light source are the main methods at described substrateThe front emitting led light source of emergent light in line direction,

Described LED light source is made up of multiple LED and fluorophor,

It is LED arrangement side that the direction that the position distribution scope of described multiple LED grows is put in establishingXiang Shi,

From the normal direction of described substrate observe the situation of described the second optics with describedThe width of described second optics of the parallel direction of LED orientation, is less than with describedThe width of described second optics of the vertical direction of the parallel direction of LED orientation.

13. 1 kinds of lighting devices, is characterized in that, comprising:

Substrate;

The first LED light source of installing on electrode on described substrate and the second LED light source;

First optics corresponding with described the first LED light source;

Second optics corresponding with described the second LED light source; With

Connect the optics connecting portion of described the first optics and described the second optics,

From the photometric distribution of the emergent light of described the first optics with from described the second opticsThe photometric distribution difference of the emergent light of parts,

If it is frontal that described lighting device mainly irradiates direction of light, with described frontalWhen substantially vertical direction is side surface direction,

Described the first LED light source and described the second LED light source are the main methods at described substrateThe front emitting led light source of emergent light in line direction,

Described the first optics or the second optics are lens,

Described lens by the inner lens surfaces relative with LED light source corresponding to described lens andMake to form to the lens surface of the outside outgoing of described lens from the light of described LED light source,

In the shape of described inner lens surfaces, comprise and making from described LED light source to described optics portionThe light that part connecting portion goes is to the face of described lens surface refraction.

14. lighting devices as claimed in claim 13, is characterized in that:

The cross sectional shape of described inner lens surfaces comprises curve and straight line.

15. 1 kinds of lighting devices, is characterized in that, comprising:

Substrate;

The first LED light source of installing on electrode on described substrate and the second LED light source;

First optics corresponding with described the first LED light source;

Second optics corresponding with described the second LED light source; With

Connect the optics connecting portion of described the first optics and described the second optics,

From the photometric distribution of the emergent light of described the first optics with from described the second opticsThe photometric distribution difference of the emergent light of parts,

If it is frontal that described lighting device mainly irradiates direction of light, with described frontalWhen substantially vertical direction is side surface direction,

Described the first LED light source and described the second LED light source are the main methods at described substrateThe front emitting led light source of emergent light in line direction,

Described the first optics is configured near the center of described lighting device to surround described photographThe center of bright device,

Described the first optics while observation from the normal direction of described substrate is isotropicShape.

16. 1 kinds of lighting devices, is characterized in that, comprising:

Substrate;

The first LED light source of installing on electrode on described substrate and the second LED light source;

First optics corresponding with described the first LED light source;

Second optics corresponding with described the second LED light source; With

Connect the optics connecting portion of described the first optics and described the second optics,

From the photometric distribution of the emergent light of described the first optics with from described the second opticsThe photometric distribution difference of the emergent light of parts,

If it is frontal that described lighting device mainly irradiates direction of light, with described frontalWhen substantially vertical direction is side surface direction,

Described the first LED light source and described the second LED light source are the main methods at described substrateThe front emitting led light source of emergent light in line direction,

Described the second optics is to surround described in the mode at center of described lighting device is configured inThe end of substrate,

Described the second optics while observation from the normal direction of described substrate is anisotropicShape.

17. 1 kinds of lighting devices, is characterized in that, comprising:

Substrate;

The first LED light source of installing on electrode on described substrate and the second LED light source;

First optics corresponding with described the first LED light source;

Second optics corresponding with described the second LED light source; With

Connect the optics connecting portion of described the first optics and described the second optics,

From the photometric distribution of the emergent light of described the first optics with from described the second opticsThe photometric distribution difference of the emergent light of parts,

If it is frontal that described lighting device mainly irradiates direction of light, with described frontalWhen substantially vertical direction is side surface direction,

Described the first LED light source and described the second LED light source are the main methods at described substrateThe front emitting led light source of emergent light in line direction,

The first optics while observation from the normal direction of described substrate is isotropic shapeShape,

The second optics while observation from the normal direction of described substrate is anisotropic shapeShape.