CN102901015B - Illuminating apparatus - Google Patents
Illuminating apparatus Download PDFInfo
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- CN102901015B CN102901015B CN201210261889.XA CN201210261889A CN102901015B CN 102901015 B CN102901015 B CN 102901015B CN 201210261889 A CN201210261889 A CN 201210261889A CN 102901015 B CN102901015 B CN 102901015B
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- light
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- emitting component
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- translucent cover
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Abstract
The invention provides an illuminating apparatus, wherein a guiding efficiency of light beams emitted from a light-emitting element is high. The illuminating apparatus comprises a light source served by a plurality of semiconductor light-emitting elements, and is provided with a transparent cover integrally covering a substrate and the semiconductor light-emitting elements disposed on the surface of the substrate. And the part of the cover covering the semiconductor light-emitting elements is a hemisphere shape, with the semiconductor light-emitting elementing disposed approximately in the center.
Description
Technical field
The present invention relates to the lighting device using semiconductor light-emitting elements as light source.
Background technology
In existing lighting device, in order to protect charging part and semiconductor light-emitting elements (hereinafter referred to as light-emitting component), with the cap assembly of light transmission, the substrate installing light-emitting component is covered.In this cap assembly, exist for being set up in parallel multiple light-emitting components along the shape being set up in parallel direction and carrying out with channel-shaped covering.
Such as patent document 1(Japanese Unexamined Patent Publication 2010-278266 publication) in propose a kind of cap assembly, for the multiple light-emitting components being set up in parallel installation on substrate, with the cap assembly covered together with multiple light-emitting component by substrate, cap assembly is made to have the shape of groove along being set up in parallel direction and being formed with being integrated.This mainly can reduce warpage and the distortion of substrate.
Patent document 1: Japanese Unexamined Patent Publication 2010-278266 publication.
Summary of the invention
In patent document 1, the cap assembly of light transmission is made to be along the shape being set up in parallel direction and covering with channel-shaped for the multiple light-emitting components be disposed in parallel on substrate, a part along the light beam of the length direction of groove from the light beam of light-emitting component outgoing can be totally reflected, so the derivation efficiency of light beam may be deteriorated.
The object of the present invention is to provide the lighting device that a kind of derivation efficiency of the light beam from light-emitting component outgoing is high.
In order to reach above-mentioned purpose, the feature of lighting device of the present invention is, with multiple semiconductor light-emitting elements for light source, there is translucent cover substrate and installation multiple semiconductor light-emitting elements on the surface of the substrate covered integratedly, the shape of the part of semiconductor light-emitting elements is covered, for taking semiconductor light-emitting elements as the semi-spherical shape of approximate centre in translucent cover.
In addition, the feature of another lighting device of the present invention is, with multiple semiconductor light-emitting elements for light source, there is translucent cover substrate and installation multiple semiconductor light-emitting elements on the surface of the substrate covered integratedly, covering the shape of the part of each light-emitting component in multiple semiconductor light-emitting elements in translucent cover, is the semi-spherical shape being approximate centre with each light-emitting component.
In addition, the feature of another lighting device of the present invention is, with multiple semiconductor light-emitting elements for light source, there is translucent cover substrate and installation multiple semiconductor light-emitting elements on the surface of the substrate covered integratedly, being the shape of the part that a group covers with several light-emitting components to semiconductor light-emitting elements in translucent cover, is the semi-spherical shape being approximate centre with the illuminating part center of several light-emitting components.
Preferably, the thickness in semi-spherical shape portion in translucent cover, changes smoothly in the mode thickening gradually to end the top from semi-spherical shape portion in the present invention.
Preferably, the semi-spherical shape portion of more than 2 adjacent in translucent cover exists the part of contact, the outer rim of the part of contact is positioned at the outside of the radiation angle of the semiconductor light-emitting elements of the approximate centre being in semi-spherical shape portion in the present invention.
Preferably, the global shape of translucent cover is about the central point point symmetry of translucent cover in the present invention.
The present invention preferably, using a part for translucent cover as the light receiver of remote controller signal.
According to the present invention, the translucent cover covering luminous element of the semi-spherical shape being approximate centre with each light-emitting component by use, from the light beam of light-emitting component outgoing relative to the face of above-mentioned translucent cover so that roughly normal direction is incident, the light beam after by above-mentioned lid can be avoided to be totally reflected, so the lighting device of the derivation efficiency that improve light beam can be realized when externally outgoing.
In addition, according to the present invention, because form multiple semi-spherical shape, the rigidity of translucent cover is improved, so warpage and the distortion of substrate can be alleviated, above-mentioned light-emitting component is corrected on the position suitable relative to above-mentioned translucent cover, improves the adaptation of light-emitting component installation base plate and heat sink, realize the lighting device that the luminous efficiency of light-emitting component is high.
And then according to the present invention, by making the global shape of translucent cover about the central point point symmetry of above-mentioned translucent cover, distortion when can realize shaping is less, productivity is covered preferably.
In addition, according to the present invention, the thickness in above-mentioned semi-spherical shape portion, is configured to change smoothly in the mode thickening gradually to end the top from above-mentioned semi-spherical shape portion, can realizes the wider lighting device of light distribution angle thus.
Accompanying drawing explanation
Fig. 1 is the outside drawing of the lighting device of the embodiment of the present invention.
Fig. 2 is the figure having removed the state of lampshade of the same lighting device.
Fig. 3 is the figure having removed the state of translucent cover of the same lighting device.
Fig. 4 is the enlarged drawing of the light-emitting component installation base plate shown in Fig. 3.
Fig. 5 is the figure having removed the state of light-emitting component installation base plate of the lighting device of the embodiment of the present invention.
Fig. 6 is the figure having removed the state of heat sink of the same lighting device.
Fig. 7 is the exploded perspective view of the same lighting device.
Fig. 8 is the enlarged drawing of the translucent cover shown in Fig. 7.
Fig. 9 is the partial cross section figure of the lighting device of the embodiment of the present invention.
Figure 10 is the partial cross section figure of the same lighting device.
Figure 11 is the partial cross section figure of the same lighting device.
Figure 12 is the enlarged drawing in the semi-spherical shape portion of the same lighting device.
Figure 13 is the enlarged drawing in the semi-spherical shape portion of the same lighting device.
Figure 14 is the enlarged drawing in the semi-spherical shape portion of the same lighting device.
Figure 15 is the enlarged drawing in the semi-spherical shape portion of the same lighting device.
Figure 16 is other embodiment of the same lighting device.
Figure 17 is the sectional view in the semi-spherical shape portion of the same lighting device.
Figure 18 is the sectional view in the semi-spherical shape portion of the same lighting device.
Figure 19 is the magnified partial view having removed the state of heat sink of the same lighting device.
Figure 20 illustrates in the same lighting device at figure light-emitting component installation base plate being placed in the localization method under the state on heat sink.
Figure 21 is the sectional view in the roughly semi-spherical shape portion of the same lighting device.
Figure 22 is the sectional view of the remote controller light receiver (remote control reception portion) of the same lighting device.
Description of reference numerals
1 lighting device
2 lampshades
3 heat sinks
4 translucent cover
5 lampshade installed parts
6 light-emitting component installation base plates
7 joints
8 semiconductor light-emitting elements (light-emitting component)
9 body bases
10 insulation boards
11 lighting circuit substrates
12 remote control reception element covers
13 remote control reception holes
14 utensil installation portions
15 wiring holes
16 power connection a
17 power connection b
18 semi-spherical shape portions
The part of 18a covering luminous element 8
19 power connection cover portions
20 splice housing portions
21 remote control reception portions
22 central points
The center of 23a, 23b, 23c, 23d illuminating part
The central shaft of 24 semi-spherical shape
25 symmetry axis
The outer rim of the part that the 26 semi-spherical shape portions adjoined contact
27 substrate-guided projections
28 substrate fastener a
29 front end openings
The 30 extruded portions of trapezoidal shape
The 31 extruded portions of semi-circular shape
32 punching molding portions (cutting tongue forming part)
The 33 extruded and straight edge in portion of cutting off that formed
34 punching molding and the line part of the plane formed
Straight line portion on the radial direction of the fan shape of 35 light-emitting component installation base plates 6
36 are processed by drawing and the location division formed
37 drum portions
38 escutcheon installation portions
The solid fixed part of 39 spiral shells
40 conical surfaces
41 power supply connectors
42 substrate fastener b
43 light-emitting components (safety lamp is used)
44 C faces
45 remote control reception elements
Detailed description of the invention
Below use accompanying drawing that the structure of the lighting device of the embodiment of the present invention is described.This lighting device is arranged on the ceiling surface in building, the mainly living room of general family, the mounting adapter engaged by house service utensils such as the ceiling boxs subsidiary with building and be connected with external power source and the position being fixed on regulation uses.Fig. 1 is the outside drawing watching this lighting device be arranged on not shown ceiling surface from below.Lampshade 2 is transparent, translucent or milky parts having light transmission, such as manufactured by the resin material such as acrylic resin or polystyrene.It mainly has the beam spread made from light source outgoing, alleviates to dazzle the eyes sense when user looks at lighting device straight, and makes the effect of the brightness uniformity be provided with in the room of lighting device.
Then, the exploded perspective view of lighting device 1 is represented in the figure 7, and by Fig. 2 ~ Fig. 6 description architecture corresponding to decomposing level.Fig. 2 is the state of having removed lampshade 2.The lampshade tool for mounting 5 that lampshade 2 is fixed on heat sink 3 engages maintenance, such as, by making lampshade 2 be rotated counterclockwise in a circumferential direction, the protrusion not shown fastener be arranged on lampshade 2 can be unloaded.When after dismounting lampshade 2, the utensil installation portion 14 of the central authorities being arranged on the aftermentioned body base 9 such as formed by metallic plate etc. can be seen, engaged by the suspention portion of the claw-like that this part is had with above-mentioned mounting adapter, and be fixed on the assigned position of the ceiling surface in such as living room.In addition, near above-mentioned utensil installation portion 14, being provided with the power supply connector 41 be connected with aftermentioned lighting circuit substrate 11, by making above-mentioned power supply connector 41 be connected together with the joint be arranged on above-mentioned mounting adapter, can powering from the house service of building.
Translucent cover 4 is such as the parts formed by Merlon or the transparent resin material such as acrylic resin, polystyrene, light-emitting component 8 shown in Fig. 3 and Fig. 4, light-emitting component installation base plate 6, joint 7, power connection a16, power connection b17, remote control reception hole 13 are covered integratedly, and admittedly fixed by spiral shell.In the present embodiment, light-emitting component installation base plate 6 is split into 4, be electrically connected by joint 7 between each light-emitting component installation base plate 6, but make the work of this lighting device for such as considering, luminous time the shape of light-emitting area of being seen by the lampshade 2 and arrangement mode of light-emitting component 8 that sets, with the viewpoint of light-emitting component installation base plate 6 from the slice number isoproductivity aspect raw sheet, also can at random setting substrate shape and use sheet number etc., be not limited to the present embodiment.
Light-emitting component installation base plate 6 welds light-emitting component 8.Light-emitting component 8 operationally emergent light and generating heat, the temperature of self can rise, and can reduce along with temperature raises luminous efficiency, so need to arrange the suitable heat-sink unit matched that to rise with temperature.Therefore, be used in the light-emitting component installation base plate 6 aluminium sheet with insulating barrier or the high resin plate of thermal conductivity defining copper foil pattern and solder mask, and carry out heat conduction by the not shown cooling pad etc. that snugly arranges with light-emitting component installation base plate 6 on the not shown terminal of light-emitting component 8 and the back side of light-emitting component 8, the heat trnasfer sent by light-emitting component 8 or be dispersed on light-emitting component installation base plate 6.And then, the area of dissipation of light-emitting component installation base plate 6 and thermal capacity are determined by its size, when only using this light-emitting component installation base plate to be difficult to obtain sufficient radiating effect, need by closely sealed for light-emitting component installation base plate 6 being fixed on the heat sink 3 that such as formed by metallic plate etc. is guaranteed heat dispersion.In the present embodiment, preferably increase the area of heat sink 3 as far as possible, and from the preferred one-body molded manufacture of the viewpoint of thermal conductivity, so as shown in Figure 5, be the not shown escutcheon installation portion 38 that arranges of the mode comprising the periphery surrounding above-mentioned lampshade tool for mounting 5 and lampshade 2, by the integrated metal large component of punching press.In addition, as shown in Fig. 5 ~ Fig. 7, the lighting circuit substrate 11 that spiral shell together with insulation board 10 is fixed on body base 9 admittedly covers by heat sink 3, and lighting circuit substrate 11 is accommodated in the space that surrounded by body base 9 and heat sink 3.Therefore, on heat sink 3, the light-emitting component installation base plate 6 of mounting, can make area extend near the central portion of lighting device 1, configures light-emitting component 8 thereon, can make the brightness uniformity of the light emitting source central portion of lighting device 1.
In addition, lighting circuit substrate 11 operationally can generate heat, so the atmosphere temperature in the space surrounded by body base 9 and heat sink 3 can rise.Now, when the small volume in above-mentioned space, the effect of dispelling the heat from the light-emitting component installation base plate 6 be arranged on heat sink 3 can reduce, so make heat sink 3 become than the solid fixed part 39 of the spiral shell fixed with body base 9 spiral shell to direction---namely lighting device is installed on the below under the installment state of the ceiling surface---shape of protrusion away from body base 9, make it possible to the volume of the accommodation space guaranteeing lighting circuit substrate 11.And then, because the heat sink 3 shaping manufacture that is stamped metal sheets, so above-mentioned convex form is connected to the installed surface of light-emitting component installation base plate 6 by the conical surface 40 and comprises the shape in face of spiral shell solid fixed part 39, lampshade tool for mounting 5 and escutcheon installation portion 38.By arranging the conical surface 40, can increase the volume of the accommodation space of above-mentioned lighting circuit substrate 11 and the area of heat sink 3, so the luminous efficiency of light-emitting component 8 is high, and the drawing and forming of heat sink 3 is good, can realize the lighting device that productivity ratio is good.
Light-emitting component installation base plate 6 is fixed on heat sink 3 by multiple screw together with translucent cover 4, but each light-emitting component installation base plate 6 to be minimumly directly screwed on heat sink 3 by 1 screw before installation translucent cover 4.For the solid operation of this spiral shell, with the magnified partial view in the X portion of Fig. 4, Fig. 5, Fig. 5 and Figure 19 (a) ~ (d) and Figure 20 explanation.First, light-emitting component installation base plate 6 is loaded with being harmonious with the substrate-guided projection 27 be arranged on heat sink 3, the mode that above-mentioned guide protrusion 27 matches with the gap between the straight line portion 35 on the radial direction of light-emitting component installation base plate 6 straight line portion, i.e. fan shape adjacent one another are is that the extruded portion of trapezoidal shape 30 or semi-circular shape 31 or 32, punching molding (cutting tongue shaping) portion are formed by cross section.The height h of above-mentioned extruded portion or punching molding portion shape, be set as less than the thickness of light-emitting component installation base plate 6, the translucent cover 4 of installing after can not interfering with, if but on the corresponding part of translucent cover 4, be provided with gap shape (avoidance shape), be not limited by this.By these processing methods, the straight edge 33 in the portion of cutting off can be formed when extruded, the line part 34 of die-cut plane can be formed when punching molding.Therefore, with shown in the example of such as Figure 19 (d), the situation forming location division 36 on manufacturing by needing the drawing of R shape to process is compared, and light-emitting component installation base plate 6 can not ride in the R-portion as shown in a portion, can carry out more correct location.In addition, gap between straight line portion 35 on the radial direction of above-mentioned guide protrusion 27 is arranged to and light-emitting component installation base plate 6 is adjacent one another are straight line portion, i.e. fan shape matches, so just positioning operation can be completed by making to be positioned in the light-emitting component installation base plate 6 on heat sink 3 near the center position of heat sink 3, the solid operation of spiral shell successfully can be carried out afterwards.In addition, after the minimum use of each light-emitting component installation base plate 61 screw being carried out to the operation that direct spiral shell is affixed on heat sink 3, the joint 7 connected between light-emitting component installation base plate 6, power connection a16, power connection b17 are connected, then spiral shell fixes translucent cover 4, because the dislocation of the light-emitting component installation base plate 6 caused because of the rigidity etc. of the wiring material of above-mentioned multiple joint can not be there is, so the solid operation of the spiral shell that successfully can carry out translucent cover 4, can boost productivity.
In the present embodiment, in light-emitting component installation base plate 6,1 has the power connection a16 and power connection b17 that are connected with lighting circuit substrate 11, and 3 do not have above-mentioned 2 power connections.Power connection a16 is used for light-emitting component 8 supply power to the work when usually lighting, and power connection b17 is used for light-emitting component 43 supply power only as safety lamp work, but is not limited to this structure.Not shown distribution is connected with lighting circuit substrate 11 from above-mentioned 2 power connections by the wiring hole 15 be arranged on heat sink 3.Fig. 6 is the stereogram having represented the state that arranges of lighting circuit substrate 11 after having removed heat sink 3.Lighting circuit substrate 11 is positioned on the insulation board 10 that such as formed by resin materials such as the polypropylene with anti-flammability, spiral shell is fixed on the body base 9 that such as formed by metallic plate etc. admittedly, and its outer cause projecting substrate fastener a28 in the outer rim of insulation board 10 and substrate fastener b42 keeps.Lighting circuit substrate 11 is provided with the remote control reception element 45 covered by remote control reception element cover 12, receives the infrared signal of not shown remote control unit from user's operation, carry out corresponding to signal lighting control.In addition, the front end opening 29 of the tubular of above-mentioned remote control reception element cover 12, facing to the remote control reception hole 13 be arranged on heat sink 3, makes can arrive above-mentioned remote control reception element by the infrared remote controller signal of lampshade 2 and translucent cover 4.In addition, as shown in Figure 3 and Figure 4, when light-emitting component installation base plate 6 is positioned on heat sink 3, remote control reception hole 13 is configured in the part clipped by the C face 44 of the profile of the light-emitting component installation base plate 6 adjoined.
About the configuration in remote control reception hole 13, such as, in the optional position perforate of light-emitting component installation base plate 6, but can produce restriction, so be preferably arranged on as in the embodiment described in outside light-emitting component installation base plate 6 to the configuration of light-emitting component 8 on substrate.In addition, such as also receiver hole can be set in the conical surface 40 grade of heat sink 3, although this is in outside light-emitting component installation base plate 6, in this situation, need the cover covering this receiver hole in addition.This remote control reception hole 13, namely opening is reducing on the face of the height of light-emitting component 8 and the height sum of light-emitting component installation base plate 6 light-emitting area from above light-emitting component 8, because be positioned at the outside of the radiation angle of light-emitting component 8, so be not easy the impact of the light beam being subject to self-emission device 8, the receptivity of remote controller signal can be improved.
Then, the outside drawing of translucent cover 4 is represented in fig. 8.In these parts, define semi-spherical shape portion 18, power connection cover portion 19, splice housing portion 20, remote control reception portion 21.In the present embodiment, in remote control reception portion 21, be formed with the projection of the tubular engaged with the remote control reception hole 13 be formed on heat sink 3, being used for the location in the solid operation of spiral shell of translucent cover 4, but being not limited to this shape, such as, also can be simple plane.In addition, the shape in remote control reception portion 21 can be made to be semi-spherical shape with can optically focused, or also can such as implement surface texturing processing (grain finish) to the surface of this part and suppress the reflection of signal to improve receptivity further.
In addition, in the present embodiment, make the integral plane shape of translucent cover 4 for circular, be configured to parts overall about its central point 22 point symmetry, but also can be configured to positive even numbers limit shape equally.In the present embodiment, can without the need to considering 4 kinds of installation directions of translucent cover 4 for the mounting of translucent cover when installation exercise, so can the activity duration be shortened, and the undesirable element that the installation direction mistake of parts is such can be eliminated, in addition distortion time by being point symmetry shape and can reducing shaping, can boost productivity.
Semi-spherical shape portion 18 cover 1 light-emitting component 8 or using multiple light-emitting component 8 as one group of covering, represent sectional view when light-emitting component 8 is 1 in Figure 10, in Figure 13, represent the enlarged drawing in the semi-spherical shape portion 18 in this situation.In the present embodiment, the central shaft 24 in semi-spherical shape portion 18 is set to consistent with the center 23b of illuminating part.The center 23b of the illuminating part in this situation is consistent with the center of light-emitting component 8.The refractive index of translucent cover 4 has the certain refractive index larger than the refractive index (about 1.00) of air, so when incident with angle θ i relative to the normal in semi-spherical shape portion 18 from the light beam of light-emitting component 8 outgoing, light beam has critical angle θ c from angle θ o during 18 outgoing of semi-spherical shape portion, and this critical angle θ c is different because of the material of translucent cover 4.Such as typical value is the refractive index that refractive index, acrylic resin that Merlon has about 1.59 have about 1.49, so critical angle θ c is about 39 ° ~ 42 °.From the light beam of light-emitting component 8 outgoing of approximate centre being positioned at semi-spherical shape portion 18, relative to semi-spherical shape portion 18 from roughly normal direction is incident, θ o is fully little value compared with above-mentioned critical angle θ c, so can avoid occurring to be totally reflected in translucent cover 4 with the interface, outside of air and causing light beam to derive the reduction of efficiency.
Then, represent sectional view when light-emitting component 8 is 2 in fig .9, represent the enlarged drawing in the semi-spherical shape portion 18 in this situation in fig. 12.The central shaft 24 in semi-spherical shape portion 18 is set to consistent with the center 23a of illuminating part.The center 23a of the illuminating part in the present embodiment is the point of bisection of the line segment of the central point of connection 2 light-emitting components 8.When taking multiple light-emitting components 8 of more than 2 as one group of use semi-spherical shape portion 18 covering, preferably the distance between centers of each light-emitting component 8 is fully little relative to the diameter in semi-spherical shape portion 18, but the size constrained existed when increasing semi-spherical shape portion 18 and when reducing between one group of light-emitting component 8 distance between centers thermal diffusivity reduce such restriction.But, by the diameter of the distance between centers and semi-spherical shape portion 18 that suitably set above-mentioned 2 light-emitting components 8, make to be no more than above-mentioned critical angle θ c from the θ o changed with incidence angle θ i of the light beam of each light-emitting component 8 outgoing covered by semi-spherical shape portion 18, can obtain is the same effect of the situation of 1 with light-emitting component 8.
In addition, Figure 14 represents the situation arranging 3 light-emitting components 8 point-blank.The center 23c of the illuminating part in the present embodiment is consistent with the center of the light-emitting component 8 being positioned at central authorities in 3 light-emitting components 8 arranged at equal intervals, is that the situation of a group is identical except this condition with above-mentioned with 2 light-emitting components 8.And then, represent that the mode making 3 light-emitting components 8 become the summit of equilateral triangle configures the situation of light-emitting component in fig .15.The center 23d of the illuminating part in this situation is the center of gravity of above-mentioned equilateral triangle.According to the present embodiment, compared with arranging the situation of light-emitting component 8 point-blank, the diameter in semi-spherical shape portion 18 can be reduced.
More than citing illustrates the situation arranging 1 ~ 3 light-emitting component 8 in 1 semi-spherical shape portion 18, is also same when accelerating further.Namely, be configured to the summit and the inside thereof that multiple light-emitting component 8 are configured at regular polygon, and make this polygonal center of gravity consistent with the central shaft 24 in semi-spherical shape portion 18, and, suitably set the distance between centers of above-mentioned multiple light-emitting component 8 and the diameter in semi-spherical shape portion 18, make to be no more than material with translucent cover 4 and different critical angle θ c from the θ o changed with incidence angle θ i of the light beam of each light-emitting component 8 outgoing covered by semi-spherical shape portion 18, same effect can be obtained thus.
And then citing illustrates the situation that the part 18a covering multiple light-emitting component 8 is the semi-cylindrical shape at two ends with 1/4 ball shape in figure 16.The present embodiment is the multiple light-emitting components 8 point-blank equally spaced to arrange is one group of situation carrying out covering, and same with the situation of semi-spherical shape, the center 23c being configured to illuminating part is consistent with the symmetry axis 25 of the part 18a of covering luminous element 8.But along with drum portion 37 is elongated, the light beam being configured in light-emitting component 8 outgoing at two ends from the center 23c away from illuminating part increases relative to the incident angle θ i in drum portion 37.Therefore, θ o can be caused to exceed critical angle θ c and be totally reflected, and the derivation efficiency of light beam can reduce.Thus, in the present embodiment, in order to make semi-cylindrical shape portion 37 shorten as far as possible, need employing to make the distance between centers of multiple light-emitting component 8 shorter, and setting such as the diameter of the 1/4 ball shape part at two ends larger grade.
In addition, it is one group with above-mentioned multiple light-emitting component 8, with semi-spherical shape portion 18 or when the part 18a that two ends have the covering luminous element 8 in the semi-cylindrical shape portion of 1/4 ball shape covers, also can form with the light-emitting component 8 that illuminant colour is different (one group).
Then, sectional view when there is the part contacted with each other is represented in adjacent multiple semi-spherical shape portions 18 in fig. 17.From light-emitting component 8 with the light beam of the irradiation angle outgoing of the characteristic of light-emitting component 8, incide semi-spherical shape portion 18.As described in the embodiment, when there is the part of contact in adjacent semi-spherical shape portion 18, the outer rim 26 of the part of contact in the semi-spherical shape portion 18 adjoined preferably is made to be positioned at the outside of the irradiation angle of each light-emitting component 8 arranged in the mode that the central shaft 24 in each semi-spherical shape portion 18 is roughly consistent with the center 23a of illuminating part.The outer rim 26 of the part illustrating contact in adjacent semi-spherical shape portion 18 of illustrating in figure 18 is positioned at the situation of the inner side of the irradiation angle of each light-emitting component 8.In this situation, from the light beam of light-emitting component 8 outgoing, adjacent semi-spherical shape portion 18 can be incided by the part of contact in semi-spherical shape portion 18 with larger angle, so θ o exceedes critical angle θ c and is totally reflected, can think that the derivation efficiency of light beam reduces thus.
Other embodiment in the cross section in semi-spherical shape portion 18 is represented in Figure 21 (b).The present embodiment is the center of radius of curvature R i of inner side by making semi-spherical shape portion 18 and the misalignment of the radius of curvature R o in outside, and makes the example that the thickness tE near the end in semi-spherical shape portion 18 is larger than the thickness tV of adjacent upper part.Compared with the situation of the uniform Figure 21 (a) of thickness, because become large from the light beam of light-emitting component 8 outgoing relative to the incidence angle θ o at the interface, outside in semi-spherical shape portion 18, so beam expander can be made to arrive wider scope, but need in this situation to make θ o be less than critical angle θ c.The thickness in the semi-spherical shape portion 18 in translucent cover 4, changes smoothly in the mode thickening gradually to end the top from semi-spherical shape portion 18.Figure 21 (c) is the example making the thickness tE near the end in semi-spherical shape 18 less than the thickness tV of adjacent upper part on the contrary.Herein, end refers near the cutting portion in semi-spherical shape portion 18.In this situation, contrary to the above, θ o diminishes, and light beam can be made to be gathered in narrower range.And then, Figure 21 (d) be make inner side for hemisphere, outside be the example of the cubic surface such as parabola or the part in face that generated by the rotary body of ellipse.In this situation, also can be controlled convergence and the diffusion of light by the relation of the thickness tE near the thickness tV of the adjacent upper part of semi-spherical shape 18 and end, this point makes the situation of the misalignment of the center of the radius of curvature R i of the inner side in semi-spherical shape portion 18 and lateral curvature radius R o identical with described before.In addition, make the situation that inner side is the cubic surfaces such as parabola or the part in face that generated by the rotary body of ellipse, outside is hemisphere also identical.As previously discussed, make the varied in thickness in semi-spherical shape portion 18, control the incidence angle θ o at the interface, outside to semi-spherical shape portion 18, the light distribution property corresponding to the object of lighting device can be obtained.
Then, citing represents the size of the translucent cover 4 in the present embodiment, and external diameter φ is 395mm, and the thickness of resin is 1.5mm, and the height in semi-spherical shape portion is 12mm.In addition, as shown in Figure 8, power connection cover portion 19, splice housing portion 20 and semi-spherical shape portion 18 etc., whole of translucent cover 4 amounts to formation more than 100.Therefore, by photosensitiveness lid 4, there is rigidity higher compared with the situation of simple even shape, by making translucent cover 4 admittedly be fixed to heat sink 3 from spiral shell on light-emitting component installation base plate 6, warpage and the distortion of light-emitting component installation base plate 6 can be alleviated.In addition, because light-emitting component 8 is corrected on the position suitable relative to translucent cover 4, and improve the adaptation of light-emitting component installation base plate 6 and heat sink 3, therefore thermal diffusivity improves, light-emitting area can be realized evenly and the higher lighting device of the luminous efficiency of light-emitting component 8.
As described above, according to the present embodiment, translucent cover 4 covering luminous element 8 of the semi-spherical shape being approximate centre with each light-emitting component by use, the light beam sent from light-emitting component 8 relative to the face of above-mentioned translucent cover 4 so that roughly normal direction is incident, can avoid light beam by translucent cover 4 externally outgoing time be totally reflected, the lighting device of the derivation efficiency that improve light beam can be realized.
In addition, according to the present embodiment, by forming multiple semi-spherical shape portion 18, the rigidity of translucent cover 4 is improved, so warpage and the distortion of light-emitting component installation base plate 6 can be alleviated.In addition, because light-emitting component 8 is corrected on the position suitable relative to translucent cover 4, and improve the adaptation of light-emitting component installation base plate 6 and heat sink 3, therefore thermal diffusivity improves, light-emitting area can be realized evenly and the higher lighting device of the luminous efficiency of light-emitting component 8.
And then, according to the present embodiment, by making the global shape of translucent cover 4 about the central point point symmetry of above-mentioned translucent cover 4, the cover that productivity ratio is good can be realized.
And then, according to the present embodiment, by making the thickness in semi-spherical shape portion 18 change smoothly in the mode thickening gradually to end the top from semi-spherical shape portion 18, the lighting device that light distribution angle is wider can be realized.
Claims (4)
1. a lighting device, is characterized in that:
With multiple semiconductor light-emitting elements for light source,
There are translucent cover parts, these translucent cover parts will be positioned in the light-emitting component installation base plate on heat sink, this light-emitting component installation base plate on the surface with concentric circles be formed as multiple ring-type described multiple semiconductor light-emitting elements of installing of mode, cover integratedly with the power connection on described light-emitting component installation base plate surface
In described translucent cover parts, the shape covering the part of each light-emitting component in described multiple semiconductor light-emitting elements is form multiple semi-spherical shape portion with each light-emitting component for the semi-spherical shape of approximate centre, described translucent cover comprises the plurality of semi-spherical shape portion and covers the power connection portion of described power connection
In described translucent cover parts, described multiple semi-spherical shape portion with concentric circles be formed as multiple ring-type mode arrange, between the plurality of ring-type, be provided with flat,
The semi-spherical shape portion of more than 2 adjacent in described translucent cover parts exists the part of contact, the outer rim of the part of described contact is positioned at the outside of the radiation angle of the semiconductor light-emitting elements of the approximate centre being in described semi-spherical shape portion.
2. lighting device as claimed in claim 1, is characterized in that:
The thickness in semi-spherical shape portion in described translucent cover parts, changes smoothly in the mode thickening gradually to end the top from described semi-spherical shape portion.
3. lighting device as claimed in claim 1, is characterized in that:
The global shape of described translucent cover parts is about the central point point symmetry of described translucent cover parts.
4. lighting device as claimed in claim 1, is characterized in that:
Using a part for described translucent cover parts as the light receiver of remote controller signal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-162760 | 2011-07-26 | ||
| JP2011162760A JP5639543B2 (en) | 2011-07-26 | 2011-07-26 | Lighting device |
Publications (2)
| Publication Number | Publication Date |
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| CN102901015A CN102901015A (en) | 2013-01-30 |
| CN102901015B true CN102901015B (en) | 2015-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210261889.XA Expired - Fee Related CN102901015B (en) | 2011-07-26 | 2012-07-26 | Illuminating apparatus |
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| JP (1) | JP5639543B2 (en) |
| CN (1) | CN102901015B (en) |
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| JP6112395B2 (en) * | 2013-02-13 | 2017-04-12 | パナソニックＩｐマネジメント株式会社 | lighting equipment |
| JP6043676B2 (en) * | 2013-04-26 | 2016-12-14 | 日立アプライアンス株式会社 | LED lighting device |
| CN103672637B (en) * | 2013-12-04 | 2016-05-04 | 广东汉盾光电科技有限公司 | A kind of Novel LED ceiling lamp of comprehensive uniformly light-emitting |
| KR20150105169A (en) * | 2014-03-06 | 2015-09-16 | 교우세라 커넥터 프로덕츠 가부시키가이샤 | Lighting apparatus |
| JP6355048B2 (en) * | 2014-10-09 | 2018-07-11 | パナソニックＩｐマネジメント株式会社 | lighting equipment |
| JP6271755B2 (en) * | 2014-10-20 | 2018-01-31 | シャープ株式会社 | Light emitting module |
| JP6486726B2 (en) * | 2015-03-10 | 2019-03-20 | シチズン時計株式会社 | Light emitting module |
| JP6551703B2 (en) * | 2017-11-28 | 2019-07-31 | 東芝ライテック株式会社 | lighting equipment |
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Also Published As
| Publication number | Publication date |
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| JP5639543B2 (en) | 2014-12-10 |
| JP2013026588A (en) | 2013-02-04 |
| CN102901015A (en) | 2013-01-30 |
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