CN207689799U - A kind of backlight module - Google Patents
A kind of backlight module Download PDFInfo
- Publication number
- CN207689799U CN207689799U CN201820060367.6U CN201820060367U CN207689799U CN 207689799 U CN207689799 U CN 207689799U CN 201820060367 U CN201820060367 U CN 201820060367U CN 207689799 U CN207689799 U CN 207689799U
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- China
- Prior art keywords
- guide plate
- light guide
- variant part
- mounting portion
- backlight module
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- Liquid Crystal (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
A kind of backlight module comprising cooling fin, light guide plate and luminous component, the cooling fin include mounting portion and variant part, and the variant part is made of memory alloy material；The light guide plate is set to above the cooling fin；The luminous component is installed on the mounting portion and close to the light guide plate；The variant part, which is heated to will produce when reaching preset temperature value, drives the deformation of the mounting portion far from the light guide plate direction.Its heat that light guide plate and optical film group can be made to receive is greatly reduced, reduce the temperature of light guide plate and optical film group, when variant part temperature is reduced to suitable temperature, variant part can drive mounting portion close to light guide plate again, with the spacing between this dynamic adjustment mounting portion and light guide plate, ensure display brightness as far as possible ensureing diaphragm under the premise of warpage, light guide plate are not micro- molten.
Description
Technical field
The utility model is related to a kind of technical field of liquid crystal display, more specifically to a kind of backlight module.
Background technology
In existing backlight module, in order to make LED light bar rapid cooling, it will usually heat dissipation be arranged in backlight module
Piece, and LED light bar is attached on the cooling fin.In vehicle-mounted backlight module, heat dissipation is the significant problem for needing to solve, the vehicle-mounted back of the body
The use environment of optical mode group is extremely complex, when running car is in the higher place of environment temperature, under same voltage, and LED
The electric current of lamp can become larger, and LED light calorific value is made to also become larger, and at this time since environment temperature is excessively high, self-heating amount is again big, excessively high
Temperature can have an impact the accessory of surrounding.And in traditional design, in order to ensure backlight illumination, the socket of LED light is usually from leading
The distance of tabula rasa, optical film group is closer, and working at such high temperatures, it is micro- molten to easily cause optical diaphragm warpage, light guide plate
Equal integrity problems, can not also ensure to avoid working at such high temperatures even with cooling fin.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of backlight modules, can make light guide plate and optical film
The heat that group receives is greatly reduced, and reduces the temperature of light guide plate and optical film group, when variant part temperature be reduced to it is suitable
When temperature, variant part can drive mounting portion close to light guide plate again, and the spacing between mounting portion and light guide plate is adjusted with this dynamic,
Ensure to learn diaphragm warpage, light guide plate it is not micro- it is molten under the premise of ensure display brightness as far as possible.
Technical problem to be solved in the utility model is achieved by the following technical programs：
In order to solve the above technical problems, the utility model provides a kind of backlight module comprising cooling fin, light guide plate and
Luminous component, the cooling fin include mounting portion and variant part, and the variant part is made of memory alloy material；The light guide plate
Above the cooling fin；The luminous component is installed on the mounting portion and close to the light guide plate；The variant part
It is heated to will produce when reaching preset temperature value and drives the deformation of the mounting portion far from the light guide plate direction.
Further, the mounting portion is vertical with the variant part.
Further, the variant part is close to the mounting portion.
Further, the cooling fin further includes fixed part, is disposed far from one end of the mounting portion.
Further, further include lower frame, the cooling fin be set to the lower frame above, the fixed part be fixed on it is described under
On frame.
Further, the lower frame is equipped with groove close to the variant part.
Further, the variant part is recessed under normal temperature state to the direction far from the light guide plate, the variant part
It is stretched when reaching preset temperature.
Further, shape of the variant part under normal temperature state is waveform.
Further, the luminous component is LED light.
Further, the cooling fin is made of memory alloy material.
The utility model has the advantages that：Its heat that light guide plate and optical film group can be made to receive substantially drops
It is low, the temperature of light guide plate and optical film group is reduced, when variant part temperature is reduced to suitable temperature, variant part can drive again
Mounting portion is ensureing to learn diaphragm not warpage, leaded light close to light guide plate with the spacing between this dynamic adjustment mounting portion and light guide plate
Plate it is not micro- it is molten under the premise of ensure display brightness as far as possible.
The variant part is close to the mounting portion.It is to make variant part close proximity to luminous component, when the heat of luminous component
When measuring excessively high, for variant part closer to luminous component, heating rate is also faster, can make a response at the first time, with protection
Backlight module；Meanwhile variant part is closer to luminous component, the power born is also just smaller, can reduce to the greatest extent variant part it is non-just
Normal working deformation amount, to increase the service life of variant part.
Shape of the variant part under normal temperature state is waveform, and corrugated variant part can provide sufficiently large change
While shape amount, the thickness of backlight module is reduced as possible, and when lower frame opens up groove, the depth of the groove is without too deep, increasing
The intensity of strong lower frame.
Description of the drawings
Structural schematic diagram when Fig. 1 is a kind of backlight module room temperature provided by the utility model.
Fig. 2 is structural schematic diagram when a kind of backlight module provided by the utility model reaches preset temperature.
Fig. 3 is another structural schematic diagram of cooling fin.
Fig. 4 is another back light module unit structure schematic diagram provided by the utility model.
Fig. 5 is another back light module unit structure schematic diagram provided by the utility model.
Specific implementation mode
The utility model is described in detail with reference to embodiment, embodiment is only the preferred reality of the utility model
Mode is applied, is not the restriction to the utility model.
It please refers to Fig.1 and Fig. 2, a kind of backlight module provided by the utility model comprising cooling fin 1, light guide plate 2 and hair
Light component 3, the cooling fin 1 include mounting portion 11 and variant part 12, and the variant part 12 is made of memory alloy material；It is described
Light guide plate 2 is set to 1 top of the cooling fin；The luminous component 3 is installed on the mounting portion 11 and close to the light guide plate
2；The variant part 12, which is heated to will produce when reaching preset temperature value, drives the mounting portion 11 far from 2 direction of the light guide plate
Deformation.I.e. variant part 12 can make mounting portion 11 far from light guide plate 2, since luminous component 3 is mounted on mounting portion 11, luminous component
3 also and then reduce 2 He of light guide plate far from light guide plate 2 so that the heat that light guide plate 2 and optical film group receive is greatly reduced
The temperature of optical film group, when 12 temperature of variant part is reduced to suitable temperature, variant part 12 can drive mounting portion 11 close again
Light guide plate 2, with the spacing between this dynamic adjustment mounting portion 11 and light guide plate 2, warpage, light guide plate 2 be not ensureing to learn diaphragm
It is micro- it is molten under the premise of ensure display brightness as far as possible.It is the main thought of the utility model above, specifically please refers to following reality
Apply example.
Embodiment 1
It please refers to Fig.1 and Fig. 2, is a kind of backlight module provided by the utility model, is side entrance back module, packet
Cooling fin 1, light guide plate 2 and luminous component 3 are included, cooling fin 1 is " L " font, and cooling fin 1 includes mounting portion 11 and variant part 12,
I.e. mounting portion 11 is vertical with variant part 12, and the variant part 12 is made of memory alloy material, and the light guide plate 2 is set to described dissipate
The top of 1 variant part 12 of backing；The luminous component 3 is installed on the mounting portion 11 and close to the light guide plate 2, mounting portion
11 are located at 2 side of the light guide plate, and the variant part 12 is recessed under normal temperature state to the direction far from the light guide plate 2, institute
It states when variant part 12 reaches preset temperature and stretches.When backlight module is in normal temperature state, luminous component 3 works as the back of the body close to light guide plate 2
When variant part 12 in optical mode group reaches preset temperature, variant part 12 stretches, variant part 12 after stretching drive mounting portion 11 to
Direction movement far from light guide plate 2, so that luminous component 3 pulls open a certain distance with light guide plate 2, so that light guide plate 2 and optics
The heat that film group receives is greatly reduced, and reduces the temperature of light guide plate 2 and optical film group, when 12 temperature of variant part be reduced to it is suitable
When the temperature of conjunction, variant part 12 can drive mounting portion 11 close to light guide plate 2 again, with this dynamic adjustment mounting portion 11 and light guide plate 2
Between spacing, ensureing that learn diaphragm under the premise of warpage, light guide plate 2 are not micro- molten ensures display brightness as far as possible.
It should be noted that cooling fin 1 is not limited only to " L " font, can also have in actual use certain curved
Bent angle, is designed according to actual conditions.If there are enough spaces for backlight module simultaneously, the variant part 12 is normal
It can also be recessed to close to the direction of the light guide plate 2 under temperature state, depending on the specific space layout of backlight module.
Further, the variant part 12 is close to the mounting portion 11.It is to make variant part 12 close proximity to luminous component
3, when the heat of luminous component 3 is excessively high, for variant part 12 closer to luminous component 3, heating rate is also faster, can be first
Time makes a response, to protect backlight module；Meanwhile variant part 12, closer to luminous component 3, the power born is also just smaller,
The non-normal working deflection that variant part 12 can be reduced to the greatest extent, to increase the service life of variant part 12.
Further, the cooling fin 1 further includes fixed part 13, one end of the mounting portion 11 is disposed far from, with true
When protecting deformed end deformation, mounting portion 11 is moved forward and backward.
Further, further include lower frame 4, set on 4 top of the lower frame, which is reserved with supplies to shine the cooling fin 1
The space that component 3 stretches, the fixed part 13 are fixed on the lower frame 4, and the fixation of double faced adhesive tape 5 may be used.
Further, the lower frame 4 is equipped with groove 41 close to the variant part 12.Think when variant part 12 deforms to groove
41 directions are recessed, and enough spaces are provided for recess under conditions of not increasing the thickness of backlight module.
It please refers to Fig.1 to Fig.3, further, shape of the variant part 12 under normal temperature state is waveform, waveform
Variant part 12 thickness of backlight module can be reduced as possible, when lower frame 4 opens up groove while sufficiently large deflection is provided
When 41, the depth of the groove 41 is without too deep, the intensity of enhancing lower frame 4.
Further, the luminous component 3 is LED light.
Further, in order to reduce manufacture difficulty, the mounting portion 11 of the cooling fin 1, variant part 12, fixed part 13 by
Memory alloy material is made, but due to memory metal higher price, and manufacturing cost also can be improved accordingly.Preferably, the memory
Nickel-titanium alloy material can be used in alloy material.
Embodiment 2
It is down straight aphototropism mode set referring to Fig. 4, being a kind of backlight module provided by the utility model comprising dissipate
Backing 1, light guide plate 2 and luminous component 3, cooling fin 1 are " L " font, and cooling fin 1 includes mounting portion 11 and variant part 12, that is, is pacified
Dress portion 11 is vertical with variant part 12, and the variant part 12 is made of memory alloy material, and the light guide plate 2 is set to the cooling fin
The top of 1 mounting portion 11；The luminous component 3 is installed on the mounting portion 11 and close to the light guide plate 2, variant part 12
In 2 side of the light guide plate, the variant part 12 is recessed under normal temperature state to the direction far from the light guide plate 2, the change
It is stretched when reaching preset temperature in shape portion 12.When backlight module is in normal temperature state, luminous component 3 is close to light guide plate 2, when backlight mould
When variant part 12 in group reaches preset temperature, variant part 12 stretches, and variant part 12 after stretching drives mounting portion 11 to separate
The direction of light guide plate 2 is moved, so that luminous component 3 pulls open a certain distance with light guide plate 2, so that light guide plate 2 and optical film group
The heat received is greatly reduced, and reduces the temperature of light guide plate 2 and optical film group, when 12 temperature of variant part be reduced to it is suitable
When temperature, variant part 12 can drive mounting portion 11 close to light guide plate 2 again, between this dynamic adjustment mounting portion 11 and light guide plate 2
Spacing, ensureing that learn diaphragm under the premise of warpage, light guide plate 2 are not micro- molten ensures display brightness as far as possible.
Embodiment 3
Referring to Fig. 5, it is substantially the same in embodiment 2, difference lies in variant part 12 is not located at light guide plate 2
Side, but positioned at the lower section of mounting portion 11, and the variant part 12 stretches under normal temperature state, the variant part 12 reaches pre-
If being shunk when temperature, that is, drive mounting portion 11 far from light guide plate 2, so that luminous component 3 pulls open a certain distance with light guide plate 2,
So that the heat that light guide plate 2 and optical film group receive is greatly reduced, the temperature of light guide plate 2 and optical film group is reduced, change is worked as
When 12 temperature of shape portion is reduced to suitable temperature, variant part 12 can drive mounting portion 11 close to light guide plate 2 again, be adjusted with this dynamic
Spacing between mounting portion 11 and light guide plate 2, under the premise of warpage, light guide plate 2 are not micro- molten for guarantee diaphragm as far as possible
Ensure display brightness.
Above example only expresses the embodiment of the utility model, the description thereof is more specific and detailed, but can not
Therefore it is interpreted as the limitation to the utility model patent range, as long as the form using equivalent substitution or equivalent transformation is obtained
Technical solution, shall fall within the scope of the present invention.
Claims (10)
1. a kind of backlight module, which is characterized in that it includes：
Cooling fin, the cooling fin include mounting portion and variant part, and the variant part is made of memory alloy material；
Light guide plate is set to above the cooling fin；
Luminous component is installed on the mounting portion and close to the light guide plate；
The variant part, which is heated to will produce when reaching preset temperature value, drives the shape of the mounting portion far from the light guide plate direction
Become.
2. a kind of backlight module according to claim 1, which is characterized in that the mounting portion is vertical with the variant part.
3. a kind of backlight module according to claim 1, which is characterized in that the variant part is close to the mounting portion.
4. a kind of backlight module according to claim 1, which is characterized in that the cooling fin further includes fixed part, is set
In one end far from the mounting portion.
5. a kind of backlight module according to claim 4, which is characterized in that further include lower frame, the cooling fin is set to institute
It states above lower frame, the fixed part is fixed on the lower frame.
6. a kind of backlight module according to claim 5, which is characterized in that the lower frame is equipped with recessed close to the variant part
Slot.
7. a kind of backlight module according to claim 1, which is characterized in that the variant part is under normal temperature state to separate
The direction of the light guide plate is recessed, and the variant part stretches when reaching preset temperature.
8. a kind of backlight module according to claim 7, which is characterized in that shape of the variant part under normal temperature state
For waveform.
9. a kind of backlight module according to claim 1, which is characterized in that the luminous component is LED light.
10. a kind of backlight module according to claim 1, which is characterized in that the cooling fin is by memory alloy material system
At.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820060367.6U CN207689799U (en) | 2018-01-15 | 2018-01-15 | A kind of backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820060367.6U CN207689799U (en) | 2018-01-15 | 2018-01-15 | A kind of backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207689799U true CN207689799U (en) | 2018-08-03 |
Family
ID=62991027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820060367.6U Active CN207689799U (en) | 2018-01-15 | 2018-01-15 | A kind of backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207689799U (en) |
-
2018
- 2018-01-15 CN CN201820060367.6U patent/CN207689799U/en active Active
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