CN103032718A - LED (light-emitting diode) lighting device with mirror image reflector - Google Patents
LED (light-emitting diode) lighting device with mirror image reflector Download PDFInfo
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- CN103032718A CN103032718A CN2011103154949A CN201110315494A CN103032718A CN 103032718 A CN103032718 A CN 103032718A CN 2011103154949 A CN2011103154949 A CN 2011103154949A CN 201110315494 A CN201110315494 A CN 201110315494A CN 103032718 A CN103032718 A CN 103032718A
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Abstract
The invention relates to a lighting device and in particular to an LED (light-emitting diode) lighting device with a mirror image reflector. The device comprises a light emitting unit with an LED light source and a reflector; the reflector comprises a planar reflection surface; the light emitting unit also comprises at least one light emitting surface which is in a planar shape or in a curved surface shape; the light emitting surface is the light emitting surface of an LED light source body; or the surface of a light source cover arranged on the LED light source is taken as the light emitting surface; one side of the reflection surface of the reflector is close to or is pasted on the light emitting surface; the included angle alpha of a central tangent plane of the light emitting surface and the reflection surface is 90-130 DEG C; and the preferential value is 90 DEG C. With the adoption of the LED lighting device with the mirror image reflector, the problems that the lighting degree of the LED lighting device on the needed lighting surface is low and is not uniform, and glare is easy to generate are solved, the lighting degree of the LED lighting device on the lighting surface is improved, the lighting degree of the lighting surface is more uniform, the generation of the glare can be effectively prevented, and the energy is saved.
Description
Technical field
The present invention relates to a kind of LED lighting device, particularly relate to a kind of LED lighting device with mirror reflection device.
Background technology
Existing lighting device is commonly used indoor desk lamp, fluorescent lamp, lamp affixed to the ceiling, pendent lamp, Down lamp and wall lamp etc., the street lamp that outdoor road lighting is used and plaza lighting dedicated lamp.Because the LED light efficiency improves rapidly at present, LED is just fast-developing as novel efficient green semiconductor illuminating light source.The product of the desk lamp of various use led light sources, fluorescent lamp, lamp affixed to the ceiling, pendent lamp, Down lamp, wall lamp and outdoor road lamp has obtained using more and more widely.
But at certain shadow surface light fixture such as desk lamp, ceiling lamp and the street lamp of certain illumination will be arranged as what have that directionality requires, existing lighting device has certain defective.Electricity-saving lamp such as desk lamp normal operation band lampshade, electricity-saving lamp is arranged in the lampshade by its encirclement, light never besieged part sends irradiation on the table, the inner reflective surface of lampshade be coated with white or silver coating in order to sky light to desktop, its reflection efficiency is low, cause a part of light to waste, cause the illumination that shines on the desktop to reduce.Existing LED desk lamp as shown in Figure 1, a lot of little LED lamp pearls have been used in the inside, at least 30% to 40% light has shone unwanted place, even be coated with diffusion barrier on the light source surface and optical filter is also unsatisfactory, light utilization is low, reduce the illumination of the shadow surface of our needs, caused unnecessary waste of energy.In addition, no matter be LED desk lamp or LED street lamp, the illumination of the shadow surface near apart from light source is very high, and the marginal portion is very low, and uniformity of illuminance is lower, what have also can produce dazzle, namely enable to be up to state standards and relevant foreign standard, its cost also is very large, and some street lamps add light distribution structure with expensive lens to be realized, this has not only increased the cost of product, and so that light efficiency decrease.
Summary of the invention
The technical issues that need to address of the present invention provide a kind of LED lighting device with mirror reflection device, can solve the problem that existing LED lighting device illumination on needed shadow surface is low and uneven illumination is even and easily produce dazzle, improved the illumination of led light source device on shadow surface, make the illumination of shadow surface more even, and can effectively prevent the generation of dazzle, can reduce the input power of LED under the same illumination, save the energy.
A kind of LED lighting device with mirror reflection device according to the above-mentioned purpose invention comprises the luminescence unit with led light source, and it is characterized in that: also comprise reflector, described reflector has plane reflecting surface; Luminescence unit also comprises at least one light-emitting area, and described light-emitting area is plane or the curved surface shape, and described light-emitting area is that the light-emitting area of led light source body or the surface that is installed in the light source cover on the led light source are as light-emitting area; One side of the reflecting surface of reflector near or be attached on the light-emitting area, the section, center of light-emitting area and the angle α of reflecting surface are 90 °～130 °, preferred value is 90 °.
Also comprise auxiliary reflector, described auxiliary reflector has plane reflecting surface, one side of its reflecting surface near or be attached on the light-emitting area of luminescence unit, one side on the adjacent reflecting surface that is attached to reflector.
Further, the reflecting surface of described reflector or auxiliary reflector is coating film on glass or film coated plastic or metal coating or medal polish.
Further, the reflecting surface of described reflector or auxiliary reflector is minute surface or the cloudy surface of high reflectance.
Description of drawings
Fig. 1 is prior art desk lamp illuminating effect schematic diagram.
Fig. 2 is schematic diagram one of the present invention.
Fig. 3 is schematic diagram two of the present invention.
Fig. 4 is schematic diagram three of the present invention.
Fig. 5 is schematic diagram four of the present invention.
Fig. 6 is schematic diagram five of the present invention.
Fig. 7 is structure chart one of the present invention.
Fig. 8 is structure chart two of the present invention.
Fig. 9 is structure chart three of the present invention.
Figure 10 is structure chart four of the present invention.
Figure 11 is structure chart five of the present invention.
Figure 12 is structure chart six of the present invention.
Figure 13 is structure chart seven of the present invention.
Figure 14 is structure chart eight of the present invention.
Figure 15 is desk lamp illuminating effect schematic diagram of the present invention.
Figure 16 is street lighting effect schematic diagram of the present invention.
Description of reference numerals: 10, luminescence unit, 11, led light source, 11L, led light source light-emitting area, the mirror image of 11L ', led light source light-emitting area, 12, light source cover, 12L, light source cover light-emitting area, the mirror image of 12L ', light source cover light-emitting area, 13, led light source installation base plate, 14, radiator, 20, reflector, 21, reflecting plate, the reflecting surface of 21R, reflecting plate, the interior reflective surface of 21R1, reflecting plate, 22, reflector body, 23, diffuser, 24, frame, 30, auxiliary reflector, 31R, auxiliary reflector reflective surface.
The specific embodiment
The present invention will be further described below in conjunction with drawings and embodiments.
Such as Fig. 2～Fig. 6 and shown in Figure 13, LED lighting device described in the invention comprises luminescence unit 10 and reflector 20 with led light source 11.Reflector 20 has plane reflecting surface 20R.Luminescence unit 10 also comprises at least one light-emitting area, and described light-emitting area is the light-emitting area 11L of plane or curved led light source 11 bodies.One side of the reflecting surface 20R of reflector 20 near or be attached on the light-emitting area 11L of luminescence unit 10, the section, center of light-emitting area 11L and the angle α of reflecting surface 20R are 90 °～130 °, preferred value is 90 °.Led light source 11 bodies are packaged LED element or the modules with chip, in the luminescence unit several LED elements can be set, be the curved surfaces such as also promising sphere on plane because the paster LED element has light-emitting area, this has just explained why luminescence unit comprises that at least one light-emitting area and described light-emitting area are plane or the curved surface shape.
Such as Fig. 2～shown in Figure 12, different from embodiment described above is that described light-emitting area is mounted in the outer surface of the light source cover 12 on the led light source 11 as light-emitting area 12L, the section, center of light-emitting area 12L and the angle α of reflecting surface 20R are 90 °～130 °, and preferred value is 90 °.
Since one side of the reflecting surface 20R of reflector 20 near or be attached on the light-emitting area 11L or 12L of luminescence unit 10, and the angle α of light-emitting area 11L or section, 12L center and reflecting surface 20R is 90 °, map out and light-emitting area 11L or the equal-sized image of 12L at the reflecting surface 20R of reflector 20, just as we look in the mirror, therefore, light-emitting area and reflecting surface have consisted of the mirror reflection key element, we have these two key elements and mutually angle α be that 90 °～130 ° and preferred 90 ° of these principles of reflection call mirror reflection, adopt the reflector of this principle of reflection to be called the mirror reflection device.
As shown in Figure 2, in effective range of exposures, all can be gathered in M point and N point on the shadow surface from a branch of direct light BL of led light source with from a branch of mirror reflection light BR of primary reflection surface, this just is similar to a point two light source irradiations, greatly improve the brightness value of shadow surface, effectively saved the energy.
Difference based on different led light source light emitting angers, although the principle according to mirror image, it is preferred value that the angle α of two key elements equals 90 °, in specific structure as light-emitting area be curved surface shape and with respect to illumination regional below light source, angle α also can be a bit larger tham 90 °, but should not surpass 130 °, otherwise mirror image projection scope is larger, effectively the illumination of shadow surface is lower, and this is vital.
As shown in figure 11, the section, center of the light-emitting area 11L of the diffuser 12 inner led light sources 11 of installing is 90 °～130 ° with the angle α of the interior reflective surface 20R1 of the reflector 20 that is installed in diffuser 12 inside, and preferred value is 90 °.This shows, embodiment shown in Figure 11 diffuser 12 inside have the light-emitting area 11L of led light source body and reflecting surface 20R1 consist of in mirror image reflect key element, there are the light-emitting area 12L of diffuser 12 and reflecting surface 20R to consist of outer mirror image in diffuser 12 outsides and reflect key element, therefore, this is an embodiment with dual mirror reflection effect.In the present embodiment, reflecting surface 20R1 has adopted the part of principal reflection plate 21 in diffuser 12 inside, also can adopt independently reflecting plate as the reflecting surface of inside, to be fit to different product demands.Reduce light loss in order further to improve light efficiency, in the opposite side side that namely 20R1 is relative of led light source 11 a little reflecting plate 15 is set, be used for reflecting this part light, also can make the light on light-emitting area 12L surface more even.
Shown in Figure 13 and 14, in reflector body 22 inside reflecting plate 21 is installed, led light source installation base plate 13 is installed in the die cavity of afterbody, at led light source installation base plate 13 led light source 11 is installed, the section, center of the light-emitting area 11L of led light source 11 is 90 °～130 ° with the angle α of the interior reflective surface 20R1 of the reflector 20 that is installed in diffuser 12 inside, preferred value is 90 °, led light source 11 both sides have boosting reflector 30R in die cavity, be coated with diffuser 23 in the die cavity outside, and fixing by frame 24.This shows, this is an embodiment with interior mirror image reflection key element.Diffuser 23 can be plane, also can be the curved surface shape.
Such as Fig. 4 and shown in Figure 6, in order further to reduce the loss of reflector 20 both sides light, improve the utilization rate of LED light on effective shadow surface, both sides at reflector 20 also can be provided with two auxiliary reflectors 30, described auxiliary reflector has plane reflecting surface 30R, one side of its reflecting surface 30R near or be attached on the light- emitting area 11L or 12L of luminescence unit 10, one side on the adjacent reflecting surface 20R that is attached to main reflector 20.
The reflecting surface 20R of reflector 20 or auxiliary reflector 30 or 30R are coating film on glass or film coated plastic or metal coating or medal polish.
The reflecting surface 20R of reflector 20 or auxiliary reflector 30 or 30R are minute surface or the cloudy surface of high reflectance.
Such as Fig. 7, Fig. 9 and shown in Figure 11, the independently radiator 14 that led light source 11 of the present invention can have, also can be integrated altogether the thermolysis of having held concurrently with reflector body 22 as shown in figure 13, reflector body can adopt according to actual needs such as metal materials such as aluminium alloy, aluminium sheets, also can adopt the plastics such as PC or ABS.
Figure 15 and Figure 16 are respectively that the present invention is applied in the illumination effect schematic diagram on desk lamp and the street lamp, describe and according to our experiment according to the various embodiments described above, can effectively solve the problem that existing LED lighting device illumination on needed shadow surface is low and uneven illumination is even and easily produce dazzle, improved the illumination of LED lighting device on shadow surface, make the illumination of shadow surface more even, and can effectively prevent the generation of dazzle, can reduce the input power of LED under the same illumination, save the energy.
Above-described only is preferred embodiment of the present invention, should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, and these all belong to protection scope of the present invention.
Claims (4)
1. the LED lighting device with mirror reflection device comprises the luminescence unit 10 with led light source 11, it is characterized in that: also comprise reflector 20, described reflector 20 has plane reflecting surface 20R; Luminescence unit 10 also comprises at least one light-emitting area, and described light-emitting area is plane or the curved surface shape, and described light-emitting area is that the light-emitting area 11L of led light source 11 bodies or the surface that is installed in the light source cover 12 on the led light source 11 are as light-emitting area 12L; One side of the reflecting surface 20R of reflector 20 near or be attached on the light-emitting area 11L or 12L of luminescence unit 10, the section, center of light-emitting area 11L or 12L and the angle α of reflecting surface 20R are 90 °～130 °, preferred value is 90 °.
2. lighting device according to claim 1, it is characterized in that: also comprise auxiliary reflector 30, described auxiliary reflector has plane reflecting surface 30R, one side of its reflecting surface 30R near or be attached on the light-emitting area 11L or 12L of luminescence unit 10, one side on the adjacent reflecting surface 20R that is attached to reflector 20.
3. lighting device according to claim 1 and 2, it is characterized in that: the reflecting surface 20R of described reflector 20 or auxiliary reflector 30 or 30R are coating film on glass or film coated plastic or metal coating or medal polish.
4. LED matrix according to claim 1 and 2, it is characterized in that: the reflecting surface 20R of described reflector 20 or auxiliary reflector 30 or 30R are minute surface or the cloudy surface of high reflectance.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103154949A CN103032718A (en) | 2011-10-10 | 2011-10-10 | LED (light-emitting diode) lighting device with mirror image reflector |
| PCT/CN2012/001300 WO2013053194A1 (en) | 2011-10-10 | 2012-09-25 | Led lighting device with mirror reflector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103154949A CN103032718A (en) | 2011-10-10 | 2011-10-10 | LED (light-emitting diode) lighting device with mirror image reflector |
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| Publication Number | Publication Date |
|---|---|
| CN103032718A true CN103032718A (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011103154949A Pending CN103032718A (en) | 2011-10-10 | 2011-10-10 | LED (light-emitting diode) lighting device with mirror image reflector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104456164A (en) * | 2013-09-23 | 2015-03-25 | 苏州欧普照明有限公司 | Lighting assembly |
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2011
- 2011-10-10 CN CN2011103154949A patent/CN103032718A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104456164A (en) * | 2013-09-23 | 2015-03-25 | 苏州欧普照明有限公司 | Lighting assembly |
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Application publication date: 20130410 |