CN2862099Y - Ultra-thin light conducting LED back light source apparatus on electric appliances - Google Patents
Ultra-thin light conducting LED back light source apparatus on electric appliances Download PDFInfo
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- CN2862099Y CN2862099Y CNU2005200478109U CN200520047810U CN2862099Y CN 2862099 Y CN2862099 Y CN 2862099Y CN U2005200478109 U CNU2005200478109 U CN U2005200478109U CN 200520047810 U CN200520047810 U CN 200520047810U CN 2862099 Y CN2862099 Y CN 2862099Y
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Abstract
The utility model relates to a super-thin light guide type LED backlight source apparatus for electronic equipment, which includes high-light LED unit, light guide plate, reflecting film, light diffusion film, dust guard plate, and casing part, wherein the high-light LED unit includes a strip-type printed circuit board with LCD; the casing part includes bottom casing and upper cover, a hole is disposed in the middle of the upper cover for forming light-emitting area; the printed circuit board is disposed around the light guide plate; the LED is embedded into the light guide plate in horizontal direction; the reflecting film is disposed under the light guide plate; the light diffusion film is disposed above the light guide plate; the casing is disposed under the reflecting film; the dust guard plate is disposed above the light diffusion film; the upper cover is disposed above the dust guard plate and connected to the bottom casing via fixing mechanism. The utility model has the advantages of thin thickness, uniform and smooth surface, high light purity, long service time, energy conservation, environmental friendliness, simple structure, small volume, stable illuminating performance, and wide application range.
Description
Technical field
The utility model relates to electronic device field, and particularly the optics of electronic equipment and image processing field field specifically are meant ultra-thin light-conducting type LED-backlit source apparatus on a kind of electronic equipment.
Background technology
The backlight general reference is used on various information, communication, the consumer products at present for the assembly of a background light source of product can be provided, and is that application is more especially in field of machine vision, and very high to the requirement of backlight.The backlight that uses in field of machine vision at present is as the light-conducting type backlight of luminophor with the direct-light-type backlight as luminophor such as light emitting diode (LED), daylight lamp, halogen tungsten lamp and metal halide lamp with cold-cathode tube (CCFL).With cold-cathode tube (CCFL) is that the light-conducting type backlight of luminophor needs High Level AC Voltage to drive, contain the mercury harmful simultaneously to Environmental Health, and to the relative complex that requires of power supply transformation rectification group, shortcomings such as serviceable life is short, and with light emitting diode (LED), daylight lamp, halogen tungsten lamp and metal halide lamp etc. be luminophor the direct-type backlight volume source greatly, the unequal shortcoming of light-emitting area overall brightness.This just presses for a kind of backlight energy-conservation, that the life-span is long, volume is little, safe, environment friendly and pollution-free that has.
The utility model content
The purpose of this utility model is to have overcome above-mentioned shortcoming of the prior art, provide a kind of have high brightness, life-span length, energy-conserving and environment-protective, simple and practical, volume is less, stable luminescent property, applicable surface ultra-thin light-conducting type LED-backlit source apparatus on the electronic equipment comparatively widely.
In order to realize above-mentioned purpose, ultra-thin light-conducting type LED-backlit source apparatus has following formation on the electronic equipment of the present utility model:
Ultra-thin light-conducting type LED-backlit source apparatus on this electronic equipment, the LED group part, light guide plate, reflectance coating, light-diffusing film, dust excluding plate and the housing parts that comprise high brightness, its principal feature is: the LED group of described high brightness comprises that partly one is installed on the printed circuit board (PCB) of the fine strip shape of several LED, and described LED is welded on the printed circuit board (PCB) of fine strip shape according to certain rule; Described housing parts comprises drain pan and loam cake, and loam cake central authorities are the fenestra of a formation light-emitting area; The printed circuit board (PCB) of the fine strip shape of band LED is installed around light guide plate, and the LED along continuous straight runs is bumped in the light guide plate, reflectance coating is layed under the light guide plate, light-diffusing film is layed on the light guide plate, drain pan is under the reflectance coating, dust excluding plate is layed on the light-diffusing film, and loam cake is installed on dust excluding plate, and is connected with drain pan by fixed mechanism.
The fenestra of the loam cake central authorities of ultra-thin light-conducting type LED-backlit source apparatus is a rectangular opening on this electronic equipment.
The loam cake of ultra-thin light-conducting type LED-backlit source apparatus can connect by screw on this electronic equipment, bonding or engaging mode is connected with drain pan.
The LED of the high brightness of ultra-thin light-conducting type LED-backlit source apparatus can be for sending the LED of red light, white light, blue light, green light, sodium yellow, infrared light or ultraviolet light on this electronic equipment.
The material of the light guide plate of ultra-thin light-conducting type LED-backlit source apparatus is a polymethyl methacrylate on this electronic equipment.
The material of the dust excluding plate of ultra-thin light-conducting type LED-backlit source apparatus can be polymethyl methacrylate transparent or white on this electronic equipment.
Drain pan on this electronic equipment in the housing parts of ultra-thin light-conducting type LED-backlit source apparatus and loam cake are the duralumin material.
Adopted ultra-thin light-conducting type LED-backlit source apparatus on the electronic equipment of this utility model, because it adopts the LED of high brightness to be embedded into around the light guide plate, and utilize the reflectance coating of bottom and light-diffusing film to adjust positive emission light, make its brightness stronger, more even, thereby can reliably be used for Vision Builder for Automated Inspection light source use as a setting, has thin thickness simultaneously, the surface is evenly consistent, the excitation height, the characteristics that life-span is long, moreover, the backlight arrangement energy-conserving and environment-protective of this utility model, simple and practical, volume is less, the while stable luminescent property, and applicable surface is comparatively extensive.
Description of drawings
Fig. 1 is the cross-sectional structure synoptic diagram of ultra-thin light-conducting type LED-backlit source apparatus on the electronic equipment of the present utility model.
Embodiment
In order more to be expressly understood technology contents of the present utility model, describe in detail especially exemplified by following examples.
See also shown in Figure 1ly, the light-conducting type backlight that a kind of thickness is ultra-thin comprises LED group part, light guide plate, reflectance coating, light-diffusing film, dust excluding plate and the housing parts of high brightness.Technical parameter according to the LED3 (generally adopting diameter is Φ 3) of high brightness; the printed circuit board (PCB) 4 of a fine strip shape of design; LED3 is divided into some bond pads on the printed circuit board (PCB) 4 of slice shape; welding resistance plays current-limiting protection to LED3 on this printed circuit board (PCB) 4 simultaneously, also the brightness of LED3 is played the effect of control.With the printed circuit board (PCB) 4 of four groups of LED3 be placed on light guide plate 5 around, the LED3 horizontal direction is bumped in the light guide plate 5,4 of printed circuit board (PCB)s are in light guide plate 5 outsides.The effect of light guide plate 5 is the scattering direction of direct light, is used for improving the brightness of panel, and guarantees the homogeneity of panel luminance, light guide plate 5 good whether excellent very big to backlight influence, and this is one of light-conducting type backlight gordian technique.Can adopt following several mode what make light guide plate 5 in form:
(1) some printing-type light guide plate
Utilization contains the printing material of high diverging light source material, and the suitable bottom surface of light guide plate that is distributed in makes light penetrate and be uniformly distributed in the luminous zone by the front.
(2) engraving light guide plate
Adopt laser engraving machine that light guide plate is carved according to certain pattern, carve out the structure of the long ditch type of a rule, the mirror surface of ditch both sides destroys original total reflection effect, and light source can be penetrated by light guide plate is positive.
(3) sandblast mode
Utilize the fine sand material to spray and on die, form the asperities distribution, when under ejection formation, directly being transferred on the light guide plate, the place that asperities is many more, the effect of destroying the light source total reflection is strong more, therefore can reach the even distribution of surface of light source.
Above material all adopts polymethyl methacrylate (PMMA).
The light guide plate 5 that studs with LED3 is placed on the reflectance coating 2, in the light reflected back light guide plate 5 that the purposes of reflectance coating 2 is the bottom surface is exposed, is used for improving the service efficiency of light.
Put light-diffusing film 6 on light guide plate 5, as for the main application of light-diffusing film 6, be to improve positive brightness, the effect of light-diffusing film 6 is to allow the distribution of light more evenly make shadow that can't see reflection spot from the front.
Put dust excluding plate 7 on light-diffusing film 6, the effect of dust excluding plate 7 is to prevent that foul from polluting light-diffusing film, influences uniformity of light.
Loam cake 8 and drain pan 1 are that duralumin material machine adds and forms, and the surface is black through black anodizing.Loam cake 8 central authorities open a rectangular opening by certain size and are used to form light-emitting area.The central authorities of drain pan 1 are processed into recessed, be used to place reflectance coating 2, stud with light guide plate 5, light-diffusing film 6 and the dust excluding plate 7 of LED3, be loam cake 8 above, loam cake 8 and drain pan 1 by screw be connected, bonding or engaging mode is connected.
Below the utility model principle of work being done one describes: the light of LED3 light source directly enters light guide plate 5 and propagates, when light is mapped to the diffusion point, reflected light can be toward all angles diffusion, destroy conditioned reflex then by light guide plate 5 positive ejaculations, utilize various densitys, diffusion point not of uniform size, can make light guide plate 5 uniformly light-emittings, in the light reflected back light guide plate 5 that reflectance coating 2 exposes the bottom surface, in being uniformly distributed in light-emitting zone, adjust via light-diffusing film 6 again, make the distribution of light more even, improve positive brightness.
The ultra-thin light-conducting type LED-backlit source of the utility model has brightness height, excitation height, life-span long (can reach more than 100,000 hours), adaptability is strong.Along with the development of technology, multiple color such as that light emitting diode (LED) has covered is red, orange, yellow, green, blue, white is the desirable backlight of machine vision and medium and small LCD.
Adopted ultra-thin light-conducting type LED-backlit source apparatus on the electronic equipment of this utility model, because it adopts the LED of high brightness to be embedded into around the light guide plate, and utilize the reflectance coating of bottom and light-diffusing film to adjust positive emission light, make its brightness stronger, more even, thereby can reliably be used for Vision Builder for Automated Inspection light source use as a setting, has thin thickness simultaneously, the surface is evenly consistent, the excitation height, the characteristics that life-span is long, moreover, the backlight arrangement energy-conserving and environment-protective of this utility model, simple and practical, volume is less, the while stable luminescent property, and applicable surface is comparatively extensive.
In this instructions, the utility model is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from spirit and scope of the present utility model.Therefore, instructions and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (7)
1, ultra-thin light-conducting type LED-backlit source apparatus on a kind of electronic equipment comprises it is characterized in that LED group part, light guide plate, reflectance coating, light-diffusing film, dust excluding plate and the housing parts of high brightness:
The LED group of described high brightness comprises that partly one is installed on the printed circuit board (PCB) (4) of the fine strip shape of several LED (3), and described LED (3) is welded on the printed circuit board (PCB) (4) of fine strip shape according to certain rule;
Described housing parts comprises drain pan (1) and loam cake (8), and loam cake (8) central authorities are the fenestra of a formation light-emitting area;
The printed circuit board (PCB) (4) of the fine strip shape of band LED (3) is installed around light guide plate (5), and LED (3) along continuous straight runs is bumped in the light guide plate (5), reflectance coating (2) is layed under the light guide plate (5), light-diffusing film (6) is layed on the light guide plate (5), drain pan (1) is under the reflectance coating (2), dust excluding plate (7) is layed on the light-diffusing film (6), and loam cake (8) is installed on dust excluding plate (7), and is connected with drain pan (1) by fixed mechanism.
2, ultra-thin light-conducting type LED-backlit source apparatus on the electronic equipment according to claim 1 is characterized in that, the fenestra of described loam cake (8) central authorities is a rectangular opening.
3, ultra-thin light-conducting type LED-backlit source apparatus on the electronic equipment according to claim 1 is characterized in that, described loam cake (8) by screw connect, bonding or engaging mode is connected with drain pan (1).
4, according to ultra-thin light-conducting type LED-backlit source apparatus on each described electronic equipment in the claim 1 to 3, it is characterized in that the LED of described high brightness (3) is for sending the LED of red light, white light, blue light, green light, sodium yellow, infrared light or ultraviolet light.
5, according to ultra-thin light-conducting type LED-backlit source apparatus on each described electronic equipment in the claim 1 to 3, it is characterized in that the material of described light guide plate (5) is a polymethyl methacrylate.
According to ultra-thin light-conducting type LED-backlit source apparatus on each described electronic equipment in the claim 1 to 3, it is characterized in that 6, the material of described dust excluding plate (7) is a polymethyl methacrylate transparent or white.
According to ultra-thin light-conducting type LED-backlit source apparatus on each described electronic equipment in the claim 1 to 3, it is characterized in that 7, drain pan in the described housing parts (1) and loam cake (8) are the duralumin material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200478109U CN2862099Y (en) | 2005-12-21 | 2005-12-21 | Ultra-thin light conducting LED back light source apparatus on electric appliances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200478109U CN2862099Y (en) | 2005-12-21 | 2005-12-21 | Ultra-thin light conducting LED back light source apparatus on electric appliances |
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| Publication Number | Publication Date |
|---|---|
| CN2862099Y true CN2862099Y (en) | 2007-01-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005200478109U Expired - Lifetime CN2862099Y (en) | 2005-12-21 | 2005-12-21 | Ultra-thin light conducting LED back light source apparatus on electric appliances |
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| Country | Link |
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| CN (1) | CN2862099Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012126328A1 (en) * | 2011-03-15 | 2012-09-27 | 新奥科技发展有限公司 | Lighting device, high throughput cultivation equipment comprising same |
| CN103107268A (en) * | 2013-02-19 | 2013-05-15 | 东南大学 | Total reflection type white light light-emitting diode (LED) packaging structure |
| CN103137830A (en) * | 2013-02-19 | 2013-06-05 | 东南大学 | Light guide stick type white light light-emitting diode (LED) packaging structure |
| CN103151443A (en) * | 2013-02-19 | 2013-06-12 | 东南大学 | Total-reflection lateral light-emitting white-light light emitting diode (LED) packaging structure |
| CN104344871A (en) * | 2013-07-26 | 2015-02-11 | 中国石油化工股份有限公司 | Liquidometer display and magnetic levitation code mark liquidometer |
-
2005
- 2005-12-21 CN CNU2005200478109U patent/CN2862099Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012126328A1 (en) * | 2011-03-15 | 2012-09-27 | 新奥科技发展有限公司 | Lighting device, high throughput cultivation equipment comprising same |
| CN103107268A (en) * | 2013-02-19 | 2013-05-15 | 东南大学 | Total reflection type white light light-emitting diode (LED) packaging structure |
| CN103137830A (en) * | 2013-02-19 | 2013-06-05 | 东南大学 | Light guide stick type white light light-emitting diode (LED) packaging structure |
| CN103151443A (en) * | 2013-02-19 | 2013-06-12 | 东南大学 | Total-reflection lateral light-emitting white-light light emitting diode (LED) packaging structure |
| CN103151443B (en) * | 2013-02-19 | 2015-08-26 | 东南大学 | Full reflection side is to light-emitting type White-light LED package structure |
| CN103137830B (en) * | 2013-02-19 | 2015-12-09 | 东南大学 | A kind of light guide bar type White-light LED package structure |
| CN103107268B (en) * | 2013-02-19 | 2015-12-09 | 东南大学 | A kind of total-reflection type White-light LED package structure |
| CN104344871A (en) * | 2013-07-26 | 2015-02-11 | 中国石油化工股份有限公司 | Liquidometer display and magnetic levitation code mark liquidometer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070124 |
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| EXPY | Termination of patent right or utility model |