CN107152614A - A kind of LED area light source - Google Patents
A kind of LED area light source Download PDFInfo
- Publication number
- CN107152614A CN107152614A CN201710545923.9A CN201710545923A CN107152614A CN 107152614 A CN107152614 A CN 107152614A CN 201710545923 A CN201710545923 A CN 201710545923A CN 107152614 A CN107152614 A CN 107152614A
- Authority
- CN
- China
- Prior art keywords
- light source
- led
- closure
- light
- casting glue
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/20—Light sources comprising attachment means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/68—Details of reflectors forming part of the light source
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V15/00—Protecting lighting devices from damage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
- F21V19/003—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V31/00—Gas-tight or water-tight arrangements
- F21V31/04—Provision of filling media
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
Abstract
The embodiment of the invention discloses a kind of LED area light source, including：Closure；The closure formation accommodating cavity；In the accommodating cavity and attach the drive circuit board that the bottom of the closure is set；Multiple LEDs in bottom side of the drive circuit board away from the closure；It is potted in the transparent casting glue in the accommodating cavity, the casting glue covering drive circuit board and the multiple LED；Doped with light diffusing agent in the casting glue, the light diffusing agent is different from the refractive index of the casting glue.Technical scheme provided in an embodiment of the present invention, it is possible to resolve the problem of luminous efficiency of the existing illuminated panel light in side is low, and directly illuminated panel light thickness is too big.
Description
Technical field
The present embodiments relate to lighting technical field, more particularly to a kind of LED area light source.
Background technology
With the improvement of living standards, requirement of the people to illumination also more and more higher.Especially lighting field, people indoors
Be more desirable to a kind of light-emitting area is big, uniform in light emission and soft light source are illuminated, therefore panel light arises at the historic moment.With hair
The progress of optical diode (Light Emitting Diode, LED) technology, LED panel lamp application is more and more universal.
Existing LED panel lamp is mostly to be located at using guide-lighting plate technique, i.e. LED/light source on the side frame of panel light, LED
The light-emitting area of light source and the exiting surface of light fixture are also side luminescence technology into an angle of 90 degrees.The light of LED/light source transmitting is from sideways
Into light guide plate, light exports to light-emitting area by light guide plate, realizes illumination.It is super that the advantage of this design is that light fixture can be realized
Thin design, thickness can accomplish within 10mm that lamp body is slim.Certainly, shortcoming is also obvious.First, the luminous optics profit in side
Low with rate, because light loses relatively more during conduction, whole light effect is low.In addition, it is also that it lacks that light extraction is uneven
One of point, whole exiting surface light and shade differs, and forms blackening, and typically edge is bright, middle dark, influences lighting quality.
LED panel lamp also has a kind of technical scheme to be that straight-down negative lights, i.e. exiting surface of the LED/light source just to light fixture, from LED
The light that light source is sent can directly outgoing, or shone after lens on light fixture mask.The advantage of this design is light
Can directly outgoing, therefore light efficiency is high.In addition, LED/light source is evenly distributed, therefore light extraction is also highly uniform.Have the disadvantage to protect
Uniform light extraction is demonstrate,proved, whole lamp body thickness is thicker, it appears relatively heavier.
The content of the invention
The present invention provides a kind of LED area light source, low to solve the luminous efficiency of the illuminated panel light in existing side, and straight hair
The problem of light formula panel light thickness is too big.
The embodiments of the invention provide a kind of LED area light source, including：
Closure；The closure formation accommodating cavity；
In the accommodating cavity and attach the drive circuit board that the bottom of the closure is set；
Multiple LEDs in bottom side of the drive circuit board away from the closure；
The transparent casting glue in the accommodating cavity is potted in, the casting glue covers drive circuit board and described many
Individual LED；Doped with light diffusing agent in the casting glue, the light diffusing agent is different from the refractive index of the casting glue.
LED area light source provided in an embodiment of the present invention, shell is the closure to form accommodating cavity, the accommodating cavity
The interior bottom for attaching closure is provided with drive circuit board, and the side of bottom of the drive circuit board away from closure is provided with
Multiple LEDs；Embedding has transparent casting glue, casting glue covering drive circuit board and multiple LEDs in accommodating cavity.Due to
The transparent casting glue of whole area source embedding, therefore degree of protection is higher, and whole area source after the transparent casting glue of embedding
For solid construction, LED area light source structural strength height, good impact resistance.In addition, the casting glue for the LED area light source that the present invention is provided
It is interior that doped with light diffusing agent, light diffusing agent is different from the refractive index of casting glue, thus the light that sends of LED in light diffusing agent and
Can occur deviation when being transmitted in casting glue so that light is disorderly and unsystematic in the exit direction of shell, realizes uniform, and
Because light diffusing agent can realize the effect of uniform, the thickness of LED area light source can far smaller than straight illuminated panel light.
Brief description of the drawings
Fig. 1 is a kind of sectional structure chart of LED area light source provided in an embodiment of the present invention；
Fig. 2 is the laying schematic diagram for the LED that light-emitting area provided in an embodiment of the present invention is rectangular LED area light source；
Fig. 3 is the laying schematic diagram for the LED that light-emitting area provided in an embodiment of the present invention is circular LED area light source；
Fig. 4 is the sectional structure chart of another LED area light source provided in an embodiment of the present invention；
Fig. 5 is the sectional structure chart of another LED area light source provided in an embodiment of the present invention.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that, in order to just
Part related to the present invention rather than entire infrastructure are illustrate only in description, accompanying drawing.
The embodiment of the present invention provides a kind of LED area light source, and with reference to Fig. 1, Fig. 1 is a kind of LED provided in an embodiment of the present invention
The sectional structure chart of area source, the LED area light source includes：
Closure 1；The formation accommodating cavity of closure 1；
In accommodating cavity and attach closure 1 bottom set drive circuit board 2；
Multiple LEDs 3 in bottom side of the drive circuit board 2 away from closure 1；
It is potted in the transparent casting glue 4 in accommodating cavity, the covering drive circuit board 2 of casting glue 4 and multiple LEDs 3；
Doped with light diffusing agent 5 in casting glue 4, light diffusing agent 5 is different from the refractive index of casting glue 4.
A kind of new LED area light source is present embodiments provided, the lamp body that can have side luminescent panel lamp concurrently is slim, and
The characteristics of uniform in light emission of straight-down negative luminescent panel lamp, and because the reason for light diffusing agent, the LED area light source in the present embodiment
It is luminous relative to the illuminated panel light in side and straight-down negative luminescent panel lamp more uniform.
The LED area light source includes closure 1, and closure 1 is sealed integral structure, can effectively prevent ash
Dirt, which enters, forms accommodating cavity in LED area light source, and closure 1, for accommodating drive circuit board 2 and LED 3.It is optional
, the material of closure 1 is makrolon, and makrolon is the amorphous polymer of almost colourless glassy state, is had very well
It is optical, and with very high toughness, strong shock resistance, it is adaptable to the making of lamp outer casing.
Drive circuit board 2 is located in accommodating cavity and attaches the bottom of closure 1, and the bottom of closure 1 refers to described
The side of the remote light emission side of LED area light source, side of the drive circuit board 2 away from the bottom of closure 1 is provided with multiple LEDs
3, i.e. LED 3 can be directly from the light emission side light extractions of LED area light source, compared to the illuminated panel light in side, it is not necessary to by guide-lighting
Plate changes an angle of 90 degrees light extraction, and optics utilization rate is high.The LED 3 set on drive circuit board 2 can be round end, oval or side
The LED lamp bead (with square signal in Fig. 1) of shape, LED lamp bead can be direct insertion or SMD, and LED lamp bead uses low tension
Source, supply voltage typically in the range of 2~4V, so in the present embodiment LED 3 be driven to more pacify than general household light fixtures
Full power supply, is particularly suitable for public place.
Embedding has transparent casting glue 4, the covering drive circuit board 2 of casting glue 4 and multiple LEDs 3 in accommodating cavity, then
Just without space between casting glue 4 and drive circuit board 2 and LED 3, the later stage will not enter dust and other impurities using process, make
Into pollution.LED area light source will not influence light extraction because of dust etc. in the present embodiment, and need not be swept, and casting glue 4 is improved
The degree of protection of LED area light source, and show by experiment, the degree of protection of the LED area light source in this implementation, i.e. dustproof and waterproof
Grade has reached IP68, and IP grades are to be directed to electrical appliance enclosure to allotrylic degree of protection, and numerical value 68 represents protection
Grade is that the LED area light source in highest ranking, the present embodiment can be applicable in the poor environment of air quality without influenceing illumination
Efficiency.And by the embedding of casting glue 4 to whole accommodating cavity is full of, then whole LED area light source is solid construction, as shown in Figure 1.This
Sample, whole LED area light source structural strength is high, and shock resistance is good, then the LED area light source in the present embodiment can both work as illuminating lamp
Use, building materials can also be worked as and used, the position such as can be arranged on floor, skirting, corner protector, to the building for needing to protect
Protected, be illuminated simultaneously.And because light emitting source is LED lamp bead, the shape of drive circuit board 2 and closure 1 can
Arbitrarily to be set according to building and lighting demand, and simple production process, LED lamp bead need to be only routed to the driving of setting shape
On circuit board 2, then the light-emitting area of slim LED area light source can be the arbitrary shapes such as square, rectangle or circle.
If for example, the LED area light source being applied on production line may be configured as rectangle, for being illuminated for long and narrow production line, if setting
Adorn and be illuminated to the enterprising luggage in floor, then may be configured as circle, referring to figs. 2 and 3 Fig. 2 is that the embodiment of the present invention is provided
Light-emitting area for rectangular LED area light source LED laying schematic diagram, Fig. 3 is light-emitting area provided in an embodiment of the present invention
For the laying schematic diagram of the LED of circular LED area light source, if drive circuit board 2 be cuboid in order to make uniform in light emission as far as possible,
Multiple LEDs 3 are preferably laid in rectangle, if LED area light source is circle, drive circuit board 2 may be configured as circle and also may be used
To be set to other shapes, it is preferred that multiple LEDs 3 are laid in into circle.
It is worth noting that, there is the light diffusing agent 5 using the doping of the doping methods such as hot doping in casting glue 4, light diffusion
Agent 5 is different from the refractive index of casting glue 4, for example, the refractive index of light diffusing agent 5 is 1.4, the refractive index of casting glue 4 is 1.5.Cause
It is different with the refractive index of light diffusing agent 5 for casting glue 4, therefore light is after the outgoing of LED 3, in casting glue 4 and light diffusing agent 5
Deviation can occur during middle transmission, so that light is disorderly and unsystematic from the direction of the outgoing of closure 1, finally realizes and uniformly go out
Penetrate.Optionally, in order that the light of outgoing is more uniform, multiple LEDs 3 can be evenly spaced on drive circuit board 2, ginseng
Examine Fig. 2 and Fig. 3, and laying density is tried one's best height.
LED area light source provided in an embodiment of the present invention, shell is the closure to form accommodating cavity, the accommodating cavity
The interior bottom for attaching closure is provided with drive circuit board, and the side of bottom of the drive circuit board away from closure is provided with
Multiple LEDs；Embedding has transparent casting glue, casting glue covering drive circuit board and multiple LEDs in accommodating cavity.Due to
The transparent casting glue of whole area source embedding, therefore degree of protection is higher, and whole area source after the transparent casting glue of embedding
For solid construction, LED area light source structural strength height, good impact resistance.In addition, the casting glue for the LED area light source that the present invention is provided
It is interior that doped with light diffusing agent, light diffusing agent is different from the refractive index of casting glue, thus the light that sends of LED in light diffusing agent and
Can occur deviation when being transmitted in casting glue so that light is disorderly and unsystematic in the exit direction of shell, realizes uniform, and
Because light diffusing agent can realize the effect of uniform, the thickness of LED area light source can far smaller than straight illuminated panel light.
On the basis of above-described embodiment, optionally, with reference to Fig. 4, Fig. 4 is another LED provided in an embodiment of the present invention
Neck 11 is provided with the sectional structure chart of area source, the inner surface side wall of closure 1, neck 11 is used for fixed drive circuit
Plate 2.
Drive circuit board 2 is attached to the bottom side of closure 1, and the bottom of closure 1 is the remote hair of LED area light source
The side of light side, the side without referring to gravity, so the bottom of closure 1 may be arranged on wall or roof, is driven
Dynamic circuit 2 only acts on the bottom for being attached to closure 1 then probably due to Action of Gravity Field has the risk come off, this implementation by attaching
On the shell perpendicular to bottom of the closure 1 of LED area light source in example close to bottom location interval or not compartment of terrain
Be provided with neck 11, the position for drive circuit board 2 to be fixed on to the bottom of closure 1, prevent drive circuit board 2 come off or
Move person position.
Optionally, with reference to Fig. 4, reflectance coating 6 is provided between drive circuit board 2 and multiple LEDs 3, then when LED 3 is sent out
When the light gone out is transmitted on drive circuit board 2, the light emission side of LED area light source can be largely reflexed to by reflectance coating 6, is improved
The light extraction efficiency of LED 3.Optionally, the material of reflectance coating 6 is white oil.White oil is also known as mineral oil, is by refining liquid obtained by oil
The mixture of state hydrocarbon, reflectivity is up to 93% so that the light extraction efficiency of LED area light source is further improved.
Optionally, the scope of the particle diameter of light diffusing agent 5 is 2~4 μm.If the particle diameter of light diffusing agent 5 is too big, can in casting glue 4
The quantity of the light diffusing agent particle of doping will be reduced, and the number of times that light is passed through between casting glue 4 and light diffusing agent 5 will subtract
Small, the uniformity of beam projecting may be not high enough.The scope for setting the particle diameter of light diffusing agent 5 is 2~4 μm, by checking, light extraction
Effect is than more uniform.
Optionally, the material of light diffusing agent 5 is organosilicon.Organosilicon not only can high temperature resistant, it is and low temperature resistant, can be one
Used within the scope of individual very wide temperature, either chemical property or physical and mechanical properties, variation with temperature all very littles, so
Organosilicon has resistance to irradiation and weather-proof ability, long lifespan well.And the particle diameter of organosilicon is 2~4 μm, it is adaptable to the present embodiment
In LED area light source.
Optionally, the scope of the quality doping ratio of light diffusing agent 5 is 0.1%~1% in casting glue 4.Specifically choose
Depending on the numerical value of doping ratio is according to the spacing of LED 3.If the density for the LED 3 laid on drive circuit board 2 is smaller, i.e. spacing
Bigger, then the more easy direct outgoing of the light that LED 3 is sent so that the whole exiting surface light and shade of LED area light source differs forms dark
Spot, it is necessary in casting glue 4 the higher light diffusing agent 5 of doping ratio；If the spacing for the LED 3 laid on drive circuit board 2 is got over
Small, the brightness spot of LED area light source outgoing itself all can be fewer, it is only necessary to the light diffusion that doping ratio is relatively low in casting glue 4
Agent 5.
Optionally, casting glue 4 is silica gel.Silica gel does not react in addition to highly basic, hydrofluoric acid with any material, water insoluble
With any solvent, nonpoisonous and tasteless, chemical property is stable.The silica gel of various models forms different micro- because its manufacture method is different
Pore structure, absorption property is high, is convenient for the doping of light diffusing agent 5.The chemical composition and physical arrangement of silica gel, determine that it has
There are many other same type of material to be difficult to replace to obtain feature：Heat endurance is good, chemical property is stable, have higher mechanical strength etc.,
The purpose of protection drive circuit 2, LED 3 and claimed building can be effectively played.The refractive index of silica gel is 1.5, if
Light diffusing agent 5 is organosilicon, and the refractive index of organosilicon is 1.4, then by silica gel and the refraction action of organosilicon, final LED 3
The light sent can realize uniform.
In addition, casting glue 4 is except silica gel, can also be the materials such as polyurethane resin or epoxy resin, and other energy
Enough reach the other materials of the effect of casting glue 4 in this implementation.
Optionally, with reference to Fig. 5, Fig. 5 is the sectional structure chart of another LED area light source provided in an embodiment of the present invention, envelope
The inner surface for closing shell 1 is frosting.Frosting can effectively upset the total reflection of the inner surface of closure 1 so that by filling
The light of sealing 4 and light diffusing agent 5 again passes by diffusing reflection outgoing, reaches more uniform light-out effect.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art it is various it is obvious change,
Readjust, be combined with each other and substitute without departing from protection scope of the present invention.Therefore, although by above example to this
Invention is described in further detail, but the present invention is not limited only to above example, is not departing from present inventive concept
In the case of, other more equivalent embodiments can also be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (10)
1. a kind of LED area light source, it is characterised in that including：
Closure；The closure formation accommodating cavity；
In the accommodating cavity and attach the drive circuit board that the bottom of the closure is set；
Multiple LEDs in bottom side of the drive circuit board away from the closure；
The transparent casting glue in the accommodating cavity is potted in, the casting glue covers drive circuit board and the multiple
LED；Doped with light diffusing agent in the casting glue, the light diffusing agent is different from the refractive index of the casting glue.
2. LED area light source according to claim 1, it is characterised in that the multiple LED is evenly spaced in the driving
On circuit board.
3. LED area light source according to claim 1, it is characterised in that set on the inner surface side wall of the closure
There is neck, the neck is used to fix the drive circuit board.
4. LED area light source according to claim 1, it is characterised in that set between the drive circuit board and multiple LEDs
It is equipped with reflectance coating.
5. LED area light source according to claim 4, it is characterised in that the material of the reflectance coating is white oil.
6. LED area light source according to claim 1, it is characterised in that the quality doping of light diffusing agent in the casting glue
The scope of ratio is 0.1%~1%.
7. LED area light source according to claim 1, it is characterised in that the material of the light diffusing agent is organosilicon.
8. LED area light source according to claim 1, it is characterised in that the scope of the particle diameter of the light diffusing agent is 2 μm~
4μm。
9. LED area light source according to claim 1, it is characterised in that the inner surface of the closure is frosting.
10. the LED area light source according to claim any one of 1-9, it is characterised in that the casting glue is silica gel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710545923.9A CN107152614A (en) | 2017-07-06 | 2017-07-06 | A kind of LED area light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710545923.9A CN107152614A (en) | 2017-07-06 | 2017-07-06 | A kind of LED area light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107152614A true CN107152614A (en) | 2017-09-12 |
Family
ID=59795245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710545923.9A Pending CN107152614A (en) | 2017-07-06 | 2017-07-06 | A kind of LED area light source |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01165182A (en) * | 1987-12-22 | 1989-06-29 | Canon Inc | Light emitting diode display device |
| CN101089454A (en) * | 2006-06-16 | 2007-12-19 | 魏星远 | LED light plate |
| CN101725850A (en) * | 2008-10-21 | 2010-06-09 | 东芝照明技术株式会社 | Lighting device |
| CN202332845U (en) * | 2011-11-29 | 2012-07-11 | 张平 | LED (Light Emitting Diode) plane light source with high luminous efficiency |
| CN203979910U (en) * | 2013-07-17 | 2014-12-03 | 中山市万普电子科技有限公司 | COB-LED light source and light fixture |
| CN207316494U (en) * | 2017-07-06 | 2018-05-04 | 山东中微光电子有限公司 | A kind of LED area light source |
-
2017
- 2017-07-06 CN CN201710545923.9A patent/CN107152614A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01165182A (en) * | 1987-12-22 | 1989-06-29 | Canon Inc | Light emitting diode display device |
| CN101089454A (en) * | 2006-06-16 | 2007-12-19 | 魏星远 | LED light plate |
| CN101725850A (en) * | 2008-10-21 | 2010-06-09 | 东芝照明技术株式会社 | Lighting device |
| CN202332845U (en) * | 2011-11-29 | 2012-07-11 | 张平 | LED (Light Emitting Diode) plane light source with high luminous efficiency |
| CN203979910U (en) * | 2013-07-17 | 2014-12-03 | 中山市万普电子科技有限公司 | COB-LED light source and light fixture |
| CN207316494U (en) * | 2017-07-06 | 2018-05-04 | 山东中微光电子有限公司 | A kind of LED area light source |
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Application publication date: 20170912 |
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| RJ01 | Rejection of invention patent application after publication |