CN206363062U - A kind of high brightness backlights source for digital camera - Google Patents
A kind of high brightness backlights source for digital camera Download PDFInfo
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- CN206363062U CN206363062U CN201621485606.XU CN201621485606U CN206363062U CN 206363062 U CN206363062 U CN 206363062U CN 201621485606 U CN201621485606 U CN 201621485606U CN 206363062 U CN206363062 U CN 206363062U
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- plate
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- light guide
- guide plate
- glue
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Abstract
The utility model is related to a kind of high brightness backlights source for digital camera, including LED light source module, light guide plate, reflecting plate, diffuser plate, upper add light plate, lower add light plate, spread add lustre plate, shading glue frame and glue iron integrated frame, light guide plate, diffuser plate, lower add light plate, together with upper add light plate is brought into close contact successively from top to bottom with diffusion add lustre plate, LED light source module is close to be arranged on a side wall of light guide plate, shading glue frame is arranged on the top of diffusion add lustre plate, glue iron integrated frame is arranged on the bottom of light guide plate, reflecting plate is fixedly installed on the bottom of glue iron integrated frame, side shading rubber belt is provided with the periphery of glue iron integrated frame；LED light source module includes multiple white lamps of SMT paster LEDs, Metal Substrate copper coating board and binding post, the white lamp of SMT paster LEDs is pasted onto on Metal Substrate copper coating board using heat-conducting silica gel sheet, binding post is welded on Metal Substrate copper coating board, Metal Substrate copper coating board is provided with photosensitive control optical circuit, photosensitive control optical circuit and is connected with photo resistance.
Description
Technical field
The utility model is related to a kind of backlight, concretely relates to a kind of high brightness backlights for digital camera
Source.
Background technology
The maximum difference of digital camera and traditional camera be exactly it possess one can browsing pictures in time screen, referred to as
For the display screen of digital camera, generally liquid crystal（LCD, Liquid Crystal Display）Structure.Conventional digital camera
LCD is TFT types, and it includes housing, Polarizer, liquid crystal layer, TFT glass substrates, light guide plate, color filter, fluorescent tube etc.,
For this LCDs, backlight is the light projected from fluorescent tube, and it is right that these light sources can first pass through a Polarizer
Pass through liquid crystal again afterwards, the at this moment arrangement mode of liquid crystal molecule and then change penetrates the light angle of liquid crystal.Yet with this back of the body
The brightness of light source is relatively low, when using this LCD display, it is found that different color and contrast are arrived from the point of view of difference
Degree, if watching a complete white picture from very oblique angle, may can be appreciated that black or color distortion.In addition, in difference
Strong light or low light environment under, the picture brightness of such a LCD display can not adjust cause the definition of display picture also by
Influence, therefore, it is necessary to develop a kind of new aobvious to improve digital camera suitable for the high brightness backlights source of digital camera
The display effect of display screen.
Utility model content
The purpose of this utility model is to provide a kind of high brightness backlights source for digital camera, backlight use
LED is as light source, and its overall construction design is ingenious, and brightness can adaptively be adjusted according to the size of ambient brightness, can be had
Effect improves the display effect of screen of digital camera, improves the shooting effect of digital camera, and can also effectively improve display
The service life and customer experience degree of screen.
To achieve these goals, the technical solution adopted in the utility model is, a kind of high brightness for digital camera
Backlight, including LED light source module, light guide plate, reflecting plate, diffuser plate, upper add light plate, lower add light plate, diffusion add lustre plate, shading
Glue frame and glue iron integrated frame, the light guide plate, diffuser plate, lower add light plate, upper add light plate and diffusion add lustre plate are from top to bottom successively
It is brought into close contact together, the LED light source module is close to be arranged on a side wall of light guide plate, and is fixed on glue iron integrated frame
On the mounting groove of end, the shading glue frame is arranged on the top of diffusion add lustre plate, and covers the top of LED light source module,
The glue iron integrated frame is arranged on the bottom of light guide plate, is used for fixed support light guide plate as support and is arranged on more than light guide plate
All parts, the reflecting plate is fixedly installed on the bottom of glue iron integrated frame, and side shading is provided with the periphery of glue iron integrated frame
Adhesive tape；The LED light source module includes multiple white lamps of SMT paster LEDs, Metal Substrate copper coating board and binding post, the SMT
The white lamp of paster LED is pasted onto on Metal Substrate copper coating board using heat-conducting silica gel sheet, and the binding post is welded on Metal Substrate and covered
On copper circuit board, the Metal Substrate copper coating board is provided with photosensitive control optical circuit, the photosensitive control optical circuit and is connected with light
Quick resistance.
As a kind of improvement of the present utility model, the Metal Substrate copper coating board uses aluminum-based copper-coated circuit board, and its is right
The supportive of the white lamp of SMT paster LEDs is good, and excellent heat dissipation performance, can effectively ensure SMT paster LEDs white lamp when being used for a long time because general
It is yellow and reduce intensity of illumination.
As a kind of improvement of the present utility model, the light guide plate uses flat optical grade PMMA light guide plates, light guide plate
Bottom be reflecting surface, on the reflecting surface pass through laser engraving mode be provided with tetrahedral angle cone prism shape reflective salient point.
As a kind of improvement of the present utility model, the quantity of the white lamp of SMT paster LEDs is 5-10, each SMT patches
The power of the white lamps of piece LED is 0.5W, so using the white lamps of LED of many middle low powers as light source, can be met ensureing brightness
It is required that on the premise of, caloric value is effectively reduced, bright reliability and uniformity is improved.
As a kind of improvement of the present utility model, the shading glue frame uses black and white shading double faced adhesive tape, the side shading glue
Band uses black and white shading one side glue.
As a kind of improvement of the present utility model, the top of the shading glue frame is provided with one layer of PE transparent protective film.
As a kind of improvement of the present utility model, the photosensitive control optical circuit includes light-inductive module, PWM light modulation letters
Number generation module and LED constant current drive module, the input connection photo resistance of the light-inductive module, light-inductive module
Output end connection PWM dim signal generation module inputs, the PWM dim signals generation module output end connection LED
The input of constant-current driven module, the output end of the LED constant current drive module connects all SMT pasters being cascaded
The white lamps of LED.
Relative to prior art, the high brightness backlights source overall construction design of the present utility model for digital camera is skilful
Wonderful, cost is relatively low, easy to use, and it is bright that the LED light source module and the light guide plate of special construction used can have backlight
Spend height, uniform light, without blackening, light modulation it is steady the advantages of, the display effect of screen of digital camera can be effectively improved, and
Due to being provided with photosensitive control optical circuit in LED light source module, pass through the light outside the photo resistance logarithmic code camera that is connected in circuit
Detected, then carried out according to outside intensity of illumination factor come the white lamp luminosity of LED to LED light source module according to intensity
Adaptive adjustment, effectively improves shooting effect of the digital camera under outdoor varying environment brightness, also effectively increases product
Quality and customer experience degree.Further, since having used the white lamp string of the SMT paster LEDs of multiple middle low powers in LED light source module
Join LED light source consisting, on the premise of it can meet requirement ensureing brightness, effectively reduce caloric value, outgoing light homogeneity is high, so that
The service life of backlight can integrally be improved.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is LED light source module schematic block circuit diagram of the present utility model.
In figure：1-LED light source modules, 2- light guide plates, 3- reflecting plates, 4- diffuser plates, 5- lower add light plates, 6- upper add light plates,
7- spreads add lustre plate, 8- shading glue frames, 9- glue iron integrated frames, 10- sides shading rubber belt, 11-PE transparent protective films, 12-SMT pasters
The white lamps of LED, 13- Metal Substrate copper coating boards.
Embodiment
In order to deepen, to understanding and cognition of the present utility model, the utility model to be further described below in conjunction with the accompanying drawings
And introduction.
As shown in figure 1, a kind of high brightness backlights source for digital camera, including it is LED light source module 1, light guide plate 2, anti-
Penetrate plate 3, diffuser plate 4, upper add light plate 6, lower add light plate 5, diffusion add lustre plate 7, shading glue frame 8 and glue iron integrated frame 9.Wherein, institute
Light guide plate 2, diffuser plate 4, lower add light plate 5, upper add light plate 6 are stated together with spreading add lustre plate 7 and being brought into close contact successively from top to bottom,
The LED light source module 1 is close to be arranged on a side wall of light guide plate 2 as side light source, and is fixed on the end of glue iron integrated frame 9
On the mounting groove in portion.The shading glue frame 8 is arranged on the top of diffusion add lustre plate 7, and covers the top of LED light source module 1,
So as to effectively prevent that backlight remaining position in addition to add lustre plate 7 is spread from occurring light leak and reduces brightness.The glue iron one
Frame 9 is arranged on the bottom of light guide plate 2, is used for fixed support light guide plate 2 as support and is arranged on all portions of light guide plate more than 2
Part, is the overall suppleness for being able to ensure that high brightness backlights source using the advantage of glue iron integrated frame 9, so as to be easy to backlight
Assembling and service life.The reflecting plate 3 is fixedly installed on the bottom of glue iron integrated frame 9, for the top reflected light of light guide plate 2
Line, is provided with side shading rubber belt 10 on the periphery of glue iron integrated frame 9, further prevents light leak, it is ensured that the light-source brightness quilt of backlight
Effectively utilize.The LED light source module 1 includes the white lamp 12 of multiple SMT paster LEDs, Metal Substrate copper coating board 13 and terminals
Son（Not shown in figure）, the white lamp 12 of the SMT paster LEDs is pasted onto on Metal Substrate copper coating board 13 using heat-conducting silica gel sheet,
The binding post is welded on Metal Substrate copper coating board 13, and the Metal Substrate copper coating board 13 is provided with photosensitive control photoelectricity
Photo resistance is connected with road, the photosensitive control optical circuit.Photo resistance can experience the light intensity outside digital camera and turn
Change corresponding electric signal into（Such as 0-5V standard voltage signal）Send photosensitive control optical circuit to, photosensitive control optical circuit is according to the external world
Light intensity it is bright secretly adjust the bright dark of LED light source module 1, become with the display brightness for adapting to LCDs in digital camera
Change.
Further, the Metal Substrate copper coating board 13 uses aluminum-based copper-coated circuit board, and it is to the white lamp of SMT paster LEDs
12 supportive is good, and excellent heat dissipation performance, can effectively ensure SMT paster LEDs white lamp 12 when being used for a long time will not yellowing and reduce
Intensity of illumination.
Further, the light guide plate 2 uses flat optical grade PMMA light guide plates 2, and the bottom of light guide plate 2 is reflection
Face, is provided with the reflective salient point of tetrahedral angle cone prism shape, this kind of 2 pairs of light guide plate by laser engraving mode on the reflecting surface
The installation accuracy of LED light source module 1 requires low, can be by from 180 ° incident of LED white light reflections of the one end of light guide plate 2, so as to have
Effect improves the light conversion ratio of light guide plate 2, and cause it is guide-lighting evenly, without dark line, evenness up to 90% and more than.
Further, the quantity of the white lamp 12 of the SMT paster LEDs is 5-10, and all white lamps 12 of SMT paster LEDs are adopted
With the mode being connected in series, the power of each white lamp 12 of SMT paster LEDs is 0.5W, and lumen illumination is 45-50LM, is so used
The white lamps of LED of many middle low powers on the premise of can meeting requirement ensureing brightness, effectively reduce caloric value, carried as light source
High light reliability and uniformity, so as to the overall service life for improving backlight.
Further, the shading glue frame 8 uses black and white shading double faced adhesive tape, and the side shading rubber belt 10 is hidden using black and white
Light one side glue.
Further, the top of the shading glue frame 8 is most pushed up provided with one layer of PE transparent protective film 11 for protecting to be located at
The diffusion add lustre plate 7 in portion is not damaged.
Further, as shown in Fig. 2 the photosensitive control optical circuit includes light-inductive module, PWM dim signals and generated
Module and LED constant current drive module, the input connection photo resistance of the light-inductive module, the output of light-inductive module
End connection PWM dim signal generation module inputs, the output end connection LED constant current of the PWM dim signals generation module is driven
The input of dynamic model block, the output end of the LED constant current drive module connects all white lamps of SMT paster LEDs being cascaded
12.Wherein, the light-inductive module is to turn photo resistance resistance produced after extraneous light intensity is detected
0-5V voltage signals are changed to, under different ambient strength conditions, the voltage signal size produced by light-inductive module
Also by difference, correspondence produces the PWM light modulations of different duty when PWM dim signal generation modules collect different voltage signals
Signal, and PWM dim signals are sent to LED constant current drive module to produce the current value of the corresponding driving white lamps of LED.Its
In, the light-inductive module can using it is existing the resistance of photo resistance can be converted to 0-5V voltage signals and export
Circuit is that can be achieved, and the PWM dim signals generation module and LED constant current drive module can be using existing with PWM light modulations
The LED constant current driving chip of function（Such as SB42511 chips）It can be achieved.
Technological means disclosed in the utility model scheme is not limited only to the technological means disclosed in above-mentioned embodiment, also
Including being combined constituted technical scheme by above technical characteristic.It should be pointed out that for the ordinary skill of the art
For personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and moistened
Decorations are also considered as protection domain of the present utility model.
Claims (7)
1. a kind of high brightness backlights source for digital camera, it is characterised in that：Including LED light source module, light guide plate, reflection
Plate, diffuser plate, upper add light plate, lower add light plate, diffusion add lustre plate, shading glue frame and glue iron integrated frame, the light guide plate, diffusion
Together with plate, lower add light plate, upper add light plate are brought into close contact successively from top to bottom with diffusion add lustre plate, the LED light source module is tight
Patch is arranged on a side wall of light guide plate, and is fixed on the mounting groove of glue iron integrated frame end, and the shading glue frame is set
On the top of diffusion add lustre plate, and the top of LED light source module is covered, the glue iron integrated frame is arranged on the bottom of light guide plate
Portion, is used for fixed support light guide plate and all parts being arranged on more than light guide plate, the reflecting plate is fixedly installed as support
In the bottom of glue iron integrated frame, side shading rubber belt is provided with the periphery of glue iron integrated frame；The LED light source module includes multiple
The white lamp of SMT paster LEDs, Metal Substrate copper coating board and binding post, the white lamp of SMT paster LEDs are viscous using heat-conducting silica gel sheet
It is attached on Metal Substrate copper coating board, the binding post is welded on Metal Substrate copper coating board, the Metal Substrate covers copper cash
Road plate is provided with photosensitive control optical circuit, the photosensitive control optical circuit and is connected with photo resistance.
2. a kind of high brightness backlights source for digital camera as claimed in claim 1, it is characterised in that the Metal Substrate is covered
Copper circuit board uses aluminum-based copper-coated circuit board.
3. a kind of high brightness backlights source for digital camera as claimed in claim 1, it is characterised in that the light guide plate is adopted
With flat optical grade PMMA light guide plates, the bottom of light guide plate is reflecting surface, is provided with the reflecting surface by laser engraving mode
The reflective salient point of tetrahedral angle cone prism shape.
4. a kind of high brightness backlights source for digital camera as claimed in claim 1, it is characterised in that the SMT pasters
The quantity of the white lamps of LED is 5-10, and the power of each white lamp of SMT paster LEDs is 0.5W.
5. a kind of high brightness backlights source for digital camera as claimed in claim 1, it is characterised in that the shading glue frame
Using black and white shading double faced adhesive tape, the side shading rubber belt uses black and white shading one side glue.
6. a kind of high brightness backlights source for digital camera as claimed in claim 1, it is characterised in that the shading glue frame
Top provided with one layer of PE transparent protective film.
7. a kind of high brightness backlights source for digital camera as described in claim any one of 1-6, it is characterised in that described
Photosensitive control optical circuit includes light-inductive module, PWM dim signals generation module and LED constant current drive module, the photaesthesia
The input of module is answered to connect photo resistance, the output end of light-inductive module connects PWM dim signal generation module inputs,
The output end of the PWM dim signals generation module connects the input of LED constant current drive module, and the LED constant current drives mould
The output end of block connects all white lamps of SMT paster LEDs being cascaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621485606.XU CN206363062U (en) | 2016-12-31 | 2016-12-31 | A kind of high brightness backlights source for digital camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621485606.XU CN206363062U (en) | 2016-12-31 | 2016-12-31 | A kind of high brightness backlights source for digital camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206363062U true CN206363062U (en) | 2017-07-28 |
Family
ID=59377695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621485606.XU Expired - Fee Related CN206363062U (en) | 2016-12-31 | 2016-12-31 | A kind of high brightness backlights source for digital camera |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206363062U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI740416B (en) * | 2020-03-11 | 2021-09-21 | 新煒科技有限公司 | Light source device and instant uniformity monitoring system for a light source device |
-
2016
- 2016-12-31 CN CN201621485606.XU patent/CN206363062U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI740416B (en) * | 2020-03-11 | 2021-09-21 | 新煒科技有限公司 | Light source device and instant uniformity monitoring system for a light source device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170728 Termination date: 20181231 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |