CN204345358U - Side entering type LED - Google Patents
Side entering type LED Download PDFInfo
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- CN204345358U CN204345358U CN201520029205.2U CN201520029205U CN204345358U CN 204345358 U CN204345358 U CN 204345358U CN 201520029205 U CN201520029205 U CN 201520029205U CN 204345358 U CN204345358 U CN 204345358U
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- led
- guide plate
- light guide
- refractive index
- entering type
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Abstract
The utility model provides a kind of side entering type LED, comprise LED module and light guide plate, LED module is arranged on the incidence surface of light guide plate, wherein, transparency material is filled, the refractive index of described transparency material and the refractive index close of light guide plate between the incidence surface and LED module of light guide plate.Fill this transparency material between the light-emitting area and the incidence surface of light guide plate of LED module after, greatly can reduce the reflection of LED light line in communication process and the optical energy loss of refraction, improve the efficiency of light energy utilization, increase the brightness of LED.The brightness of side entering type LED of the present utility model at least can improve 20%.The LED backlight or LED flat lamp that adopt side ray structure can be applied to.
Description
Technical field
The utility model relates to LED technical field, especially a kind of side entering type LED.
Background technology
Traditional LED lamp, mainly contains direct-injection type and side entering type two kinds of light-emitting modes.Direct-injection type LED lamp technique is simple, and usually do not need light guide plate, LED light source is array distribution in light fixture, and the light sent is through lampshade injection or directly penetrate.Due to the lighting angle of LED light source self, direct-injection type LED lamp easily produces dazzle.In order to solve the problem of dazzle, usually need to increase the distance bottom LED lamp and between scatter plate, to improve optical uniformity.But said method certainly will increase the thickness of LED lamp, product is comparatively heavy, and light utilization efficiency reduces.Side entering type LED lamp, owing to have employed the principle of reflection of light guide plate, makes light constantly reflect in light guide plate, and light utilization efficiency is not high.In addition, certain gap is had between LED module and the incidence surface of light guide plate, LED face refractive index is 1.55, the refractive index of light guide plate is 1.45, the refractive index of air is 1.003, and light can produce reflection through the media surface that refractive index difference is larger and reflect and lose luminous energy, therefore, this gap is less, and the brightness of product is higher.
Utility model content
The purpose of this utility model is to provide side entering type LED, solve between the LED module of existing side entering type LED and light guide plate and there is gap, then LED light line is understood through the larger medium of refractive index difference in communication process, light produces reflection and reflects and lose luminous energy, causes the problem that brightness is low.
In order to achieve the above object, the utility model provides following technical scheme:
Side entering type LED, comprises LED module and light guide plate, and LED module is arranged on the incidence surface of light guide plate, wherein, fills transparency material, the refractive index of described transparency material and the refractive index close of light guide plate between the incidence surface and LED module of light guide plate.
Further, the refractive index of described transparency material is 1.4 ~ 1.6.
Preferably, the refractive index of described transparency material is 1.4 ~ 1.5.
Particularly, described transparency material is transparent silica gel, and its refractive index is 1.42.
Particularly, described LED module is the multiple LED in display arrangement.
Further, at the arranged outside reflector plate of described transparency material, can prevent the light of LED from being spilt by the gap between the incidence surface of light guide plate and LED module.
Side entering type LED of the present utility model, the transparency material of the refractive index close of refractive index and light guide plate is filled between the incidence surface and LED module of light guide plate, fill this transparency material between the light-emitting area and the incidence surface of light guide plate of LED module after, greatly can reduce the reflection of LED light line in communication process and the optical energy loss of refraction, improve the efficiency of light energy utilization, increase the brightness of LED.The brightness of side entering type LED of the present utility model at least can improve 20%.
Side entering type LED of the present utility model can be applied to the LED backlight or LED flat lamp that adopt side ray structure.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of side entering type LED of the present utility model;
1, LED module, 11, LED component, 12, PCB substrate, 13, radiator, 2, light guide plate, 3, transparency material, 4, upper reflector plate, 5, lower reflector plate.
Detailed description of the invention
Below in conjunction with accompanying drawing of the present utility model, be clearly and completely described the technical solution of the utility model, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
According to Fig. 1, the side entering type LED of the present embodiment is described, comprises LED module and light guide plate, LED module is arranged on the incidence surface of light guide plate, and wherein, between the incidence surface and LED module of light guide plate, fill transparent silica gel, the refractive index of transparent silica gel is 1.42; The lamp face refractive index of LED module is 1.55, and the refractive index of light guide plate is 1.45.
Particularly, described LED module can adopt following structure: comprise LED component, PCB substrate and radiator, and LED is arranged on the front of PCB substrate, and the back side arranges radiator to PCB substrate.
In order to prevent the light of LED from being spilt by the gap between the incidence surface of light guide plate and LED module, brightness is caused to reduce, at the arranged outside reflector plate of transparent silica gel, as the upper reflector plate in the side entering type LED of the present embodiment and lower reflector plate.
Adopt color brightness photometer (or lumen tester) to carry out luminance test, test obtains, and the brightness of the side entering type LED of the present embodiment is 3570NIT.And adopt above-mentioned identical method of testing, luminance test is carried out to existing side entering type LED of not filling transparent silica gel, show that its brightness is 2860NIT.Contrast known, the brightness of the side entering type LED of the present embodiment improves 24.8%.Wherein NIT is brill " nit ".
In the present embodiment, the refractive index of the transparency material of filling between the incidence surface and LED module of light guide plate between 1.4 ~ 1.6, preferably, between 1.4 ~ 1.5.
Be exactly in addition, the lamp face of LED module also can adopt the material of other refractive indexes existing, light guide plate also can adopt the material of other refractive indexes existing, also other transparency materials can be filled, as long as the refractive index close of the refractive index of this transparency material and light guide plate between the incidence surface and LED module of light guide plate.
The above; be only detailed description of the invention of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; change can be expected easily or replace, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should described be as the criterion with the protection domain of claim.
Claims (6)
1. side entering type LED, comprise LED module and light guide plate, LED module is arranged on the incidence surface of light guide plate, it is characterized in that: between the incidence surface and LED module of light guide plate, fill transparency material, the refractive index of described transparency material and the refractive index close of light guide plate.
2. side entering type LED according to claim 1, is characterized in that: the refractive index of described transparency material is 1.4 ~ 1.6.
3. side entering type LED according to claim 1, is characterized in that: the refractive index of described transparency material is 1.4 ~ 1.5.
4. side entering type LED according to claim 1, is characterized in that: described transparency material is transparent silica gel, and its refractive index is 1.42.
5. according to the side entering type LED one of Claims 1-4 Suo Shu, it is characterized in that: described LED module is the multiple LED in display arrangement.
6. according to the side entering type LED one of Claims 1-4 Suo Shu, it is characterized in that: at the arranged outside reflector plate of described transparency material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520029205.2U CN204345358U (en) | 2015-01-15 | 2015-01-15 | Side entering type LED |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520029205.2U CN204345358U (en) | 2015-01-15 | 2015-01-15 | Side entering type LED |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204345358U true CN204345358U (en) | 2015-05-20 |
Family
ID=53228626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520029205.2U Expired - Fee Related CN204345358U (en) | 2015-01-15 | 2015-01-15 | Side entering type LED |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204345358U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105118722A (en) * | 2015-07-22 | 2015-12-02 | 苏州达方电子有限公司 | Light emitting module and light emitting keyboard |
| CN110242874A (en) * | 2019-08-05 | 2019-09-17 | 成都工业学院 | A kind of thin lamp |
-
2015
- 2015-01-15 CN CN201520029205.2U patent/CN204345358U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105118722A (en) * | 2015-07-22 | 2015-12-02 | 苏州达方电子有限公司 | Light emitting module and light emitting keyboard |
| CN110242874A (en) * | 2019-08-05 | 2019-09-17 | 成都工业学院 | A kind of thin lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20180115 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |