CN215954022U

CN215954022U - Heat dissipation device for display screen backlight module

Info

Publication number: CN215954022U
Application number: CN202122249836.3U
Authority: CN
Inventors: 张兴干; 刘原城
Original assignee: Changzhou New Thought Electronics Co ltd
Current assignee: Changzhou New Thought Electronics Co ltd
Priority date: 2021-09-16
Filing date: 2021-09-16
Publication date: 2022-03-04
Anticipated expiration: 2031-09-16

Abstract

The utility model discloses a display screen backlight module heat dissipation device, which comprises a front shell and a rear shell, wherein the front shell and the rear shell are fixedly connected through a buckle mechanism, a red and green alarm lamp is arranged at the top of the front shell, a transparent heat insulation plate, a backlight module, a heat conduction plate, a temperature sensor, a drying box and a heat dissipation plate mechanism are sequentially arranged in the front shell from left to right, a plurality of heat conduction lines are connected between the backlight module and the heat conduction plate, the temperature sensor is positioned at the top end of one side of the heat conduction plate, the drying boxes are uniformly distributed on two sides of the inner wall between the heat conduction plate and the heat dissipation plate mechanism, an air inlet hole is arranged at the center of the rear shell, a water tank is arranged below the air inlet hole, and a filter screen, an exhaust fan and a small water tank are sequentially arranged in the air inlet hole from right to left, so that the display screen backlight module heat dissipation device has the advantages that: this backlight unit passes through the design of air exhauster, cascade and fan, effectively dispels the heat to backlight unit, greatly increased backlight unit's life.

Description

Heat dissipation device for display screen backlight module

Technical Field

The utility model relates to the technical field of display screens, in particular to a heat dissipation device for a backlight module of a display screen.

Background

The lcd generally includes a backlight module and an lcd panel, which are stacked together, and the lcd panel does not emit light, and needs the backlight module to provide backlight for the lcd panel for displaying. Light Emitting Diodes (LEDs) are typically used as point light source devices and are often used as key components in backlight modules. Among them, it is more common to use a plurality of leds as a point Light source array disposed on the surface of a Printed Circuit Board (PCB) to form a Light emitting diode Light Bar (Light Bar). The plurality of light emitting diodes emit light under the driving action of the printed circuit board to form a strip line light source, and then the emergent direction of the light is changed through a Light Guide Plate (LGP) of the backlight module to obtain a uniform surface light source.

In the prior art, the backlight module can generate large heat due to long-time use, and the service life of the backlight module can be greatly reduced due to incapability of radiating.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

The utility model provides a heat dissipation device for a backlight module of a display screen, aiming at the problems in the related art and aiming at overcoming the technical problems in the prior related art.

Therefore, the utility model adopts the following specific technical scheme:

a display screen backlight module heat dissipation device comprises a front shell and a rear shell, wherein the front shell and the rear shell are fixedly connected through a buckle mechanism, a traffic alarm lamp is arranged at the top of the front shell, a transparent heat insulation plate, a backlight module, a heat conduction plate, a temperature sensor, a drying box and a heat dissipation plate mechanism are sequentially arranged in the front shell from left to right, a plurality of heat conduction lines are connected between the backlight module and the heat conduction plate, the temperature sensor is positioned at the top end of one side of the heat conduction plate, the drying boxes are uniformly distributed on two sides of the inner wall between the heat conduction plate and the heat dissipation plate mechanism, an air inlet hole is formed in the center of the rear shell, a water tank is arranged below the air inlet hole, a filter screen, an exhaust fan and a small water tank are sequentially arranged in the air inlet hole from right to left, a water pump is arranged above the small water tank, a water curtain is arranged below the small water tank, a backflow cover is arranged below the water curtain, the outer edge of the rear shell is provided with a plurality of through holes in a surrounding manner.

Preferably, the clamping mechanism comprises holding grooves symmetrically formed in the upper side and the lower side of the inner surface of the rear shell, grooves are formed in the holding grooves, springs are arranged in the grooves, connecting blocks are arranged at the top ends of the springs, pressing rods are arranged above the connecting blocks and penetrate through the top ends of the pressing rods to the outside of the rear shell, one sides of the pressing rods are movably connected with connecting rods through rotating shafts I, clamping blocks are movably connected to the other ends of the connecting rods, corners of the clamping blocks are movably connected with the inner walls of the holding grooves through rotating shafts II, clamping grooves matched with the clamping blocks are symmetrically formed in the upper side and the lower side of the outer surface of the front shell, and the clamping blocks are clamped in the clamping grooves.

Preferably, the radiating plate mechanism comprises a radiating plate, the radiating plate is located on the right of the temperature sensor, a plurality of fixing holes are uniformly formed in the radiating plate, fans are arranged in the fixing holes, a ventilating hole is formed in the center of the radiating plate, a flow guide cover is arranged on one side of the ventilating hole, water absorbing cotton is arranged in the ventilating hole, a net-shaped heat conducting fin is arranged in the water absorbing cotton, and one end of the net-shaped heat conducting fin is connected with the heat conducting plate.

Preferably, the rear housing has an inner space divided into a central space and a peripheral space by the pod, the central space guiding the cool air to enter, and the peripheral space guiding the hot air to escape.

Preferably, a humidity sensor is arranged at the bottom of the drying box, and silica gel is arranged on the humidity sensor.

Preferably, the bottom of the small water tank is uniformly provided with a plurality of small holes, and the water pump, the small water tank, the backflow cover and the water tank are connected through water pipes.

Preferably, the traffic light, the temperature sensor, the exhaust fan, the fan and the humidity sensor are all electrically connected through a wire, the temperature sensor is associated with a red light of the traffic light, and the humidity sensor is associated with a green light of the traffic light.

The utility model has the beneficial effects that: through the design of the filter screen, dust entering the device is reduced, and the influence on heat dissipation and operation is reduced; by the design of the air guide sleeve, cold air enters and hot air exits to realize separation, so that the efficiency is improved; through the design of the water curtain, the air entering the interior is ensured to be cold air, and the heat dissipation efficiency is improved; through the design of the absorbent cotton, water vapor in the air cooled by the water curtain is absorbed, and the air humidity is reduced; through the design of the net-shaped heat-conducting fins, the water absorption cotton is prevented from being saturated due to the water absorption state, so that the dehumidification effect cannot be achieved, and even air is prevented from entering; through the design of the fan, the hot air outflow is accelerated, the air circulation speed is increased, and the heat dissipation effect is improved; through the design of the heat conducting plate, the damage caused by directly blowing cold air to the backlight module is prevented, and the heat of the backlight module is effectively radiated; through the design of the drying box, moisture in the air is further adsorbed, and the damage of the moisture to the device is reduced; through the design of the temperature sensor and the traffic alarm lamp, a user is effectively reminded of radiating the backlight module, and the service life of the backlight module is prolonged; through the design of the humidity sensor and the traffic alarm lamp, a user is reminded of replacing dry and inner silica gel in time, and the dehumidification effect is better achieved; through the design of buckle mechanism, convenient to detach conveniently trades dry box.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic cross-sectional view illustrating a heat dissipation device of a backlight module according to an embodiment of the present invention;

FIG. 2 is a schematic view of a fastening mechanism of a heat dissipation device for a backlight module of a display panel according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a heat dissipation mechanism of a heat dissipation device for a backlight module of a display panel according to an embodiment of the present invention;

FIG. 4 is a schematic side view of a heat dissipation mechanism of a heat dissipation device for a backlight module of a display panel according to an embodiment of the present invention;

in the figure:

1. a front housing; 2. a rear housing; 3. a buckle mechanism; 4. a traffic warning light; 5. a transparent heat insulation plate; 6. a backlight module; 7. a heat conducting plate; 8. a temperature sensor; 9. a heat dissipation plate; 10. an air inlet hole; 11. filtering with a screen; 12. an exhaust fan; 13. a through hole; 14. accommodating grooves; 15. a groove; 16. a spring; 17. connecting blocks; 18. a pressing lever; 19. a clamping block; 20. a first rotating shaft; 21. a second rotating shaft; 22. a fixing hole; 23. a fan; 24. a vent hole; 25. a pod; 26. absorbent cotton; 27. a card slot; 28. a water curtain; 29. a small water tank; 30. a water pump; 31. a water tank; 32. a thermally conductive wire; 33. a mesh-shaped heat-conducting sheet; 34. drying the box; 35. a connecting rod; 36. and a reflux hood.

Detailed Description

For further explanation of the various embodiments, the drawings which form a part of the disclosure and which are incorporated in and constitute a part of this specification, illustrate embodiments and, together with the description, serve to explain the principles of operation of the embodiments, and to enable others of ordinary skill in the art to understand the various embodiments and advantages of the utility model, and, by reference to these figures, reference is made to the accompanying drawings, which are not to scale and wherein like reference numerals generally refer to like elements.

According to an embodiment of the utility model, a heat dissipation device for a display screen backlight module is provided.

In the first embodiment, as shown in fig. 1 to 4, the heat dissipation device for a display screen backlight module according to the embodiment of the present invention includes a front shell 1 and a rear shell 2, the front shell 1 and the rear shell 2 are connected and fixed by a fastening mechanism 3, a traffic light 4 is disposed at the top of the front shell 1, a transparent thermal insulation board 5, a backlight module 6, a thermal conductive board 7, a temperature sensor 8, a drying box 34 and a heat dissipation board mechanism are sequentially disposed in the front shell 1 from left to right, a plurality of thermal conductive wires 32 are connected between the backlight module 6 and the thermal conductive board 7, the temperature sensor 8 is disposed at the top end of one side of the thermal conductive board 7, the plurality of drying boxes 34 are uniformly distributed at two sides of the inner wall between the thermal conductive board 7 and the heat dissipation board mechanism, an air inlet 10 is disposed at the center of the rear shell 2, a water tank 31 is disposed below the air inlet 10, and a filter screen 11, a filter screen 31, and a filter screen are sequentially disposed in the air inlet 10 from right to left, Air exhauster 12 and little water tank 29, little water tank 29 top is equipped with water pump 30, little water tank 29 below is equipped with cascade 28, cascade 28 below is equipped with backward flow cover 36, backshell 2 is outer along encircleing being equipped with a plurality of through-holes 13.

The second embodiment comprises a front shell 1 and a rear shell 2, the front shell 1 and the rear shell 2 are fixedly connected through a buckle mechanism 3, a traffic alarm lamp 4 is arranged at the top of the front shell 1, a transparent heat insulation board 5, a backlight module 6, a heat conduction board 7, a temperature sensor 8, a drying box 34 and a heat dissipation board mechanism are sequentially arranged in the front shell 1 from left to right, a plurality of heat conduction lines 32 are connected between the backlight module 6 and the heat conduction board 7, the temperature sensor 8 is positioned at the top end of one side of the heat conduction board 7, the plurality of drying boxes 34 are uniformly distributed at two sides of the inner wall between the heat conduction board 7 and the heat dissipation board mechanism, an air inlet hole 10 is arranged at the center of the rear shell 2, a water tank 31 is arranged below the air inlet hole 10, a filter screen 11, an exhaust fan 12 and a small water tank 29 are sequentially arranged in the air inlet hole 10 from right to left, a water pump 30 is arranged above the small water tank 29, a water curtain 28 is arranged below the small water tank 29, a backflow cover 36 is arranged below the water curtain 28, a plurality of through holes 13 are arranged around the outer edge of the rear shell 2, the buckling mechanism 3 comprises accommodating grooves 14 symmetrically arranged on the upper side and the lower side of the inner surface of the rear shell 2, grooves 15 are arranged in the accommodating grooves 14, springs 16 are arranged in the grooves 15, connecting blocks 17 are arranged at the top ends of the springs 16, pressing rods 18 are arranged above the connecting blocks 17, the top ends of the pressing rods 18 penetrate through the outer part of the rear shell 2, one sides of the pressing rods 18 are movably connected with connecting rods 35 through rotating shafts one 20, fixture blocks 19 are movably connected to the other ends of the connecting rods 35, corners of the fixture blocks 19 are movably connected with the inner walls of the accommodating grooves 14 through rotating shafts two 21, clamping grooves 27 matched with the fixture blocks 19 are symmetrically arranged on the upper side and the lower side of the outer surface of the front shell 1, and the fixture blocks 19 are clamped in the clamping grooves 27, the heat dissipation plate mechanism comprises a heat dissipation plate 9, the heat dissipation plate 9 is positioned on the right side of the temperature sensor 8, a plurality of fixing holes 22 are uniformly formed in the heat dissipation plate 9, fans 23 are arranged in the fixing holes 22, a ventilation hole 24 is formed in the center of the heat dissipation plate 9, a diversion cover 25 is arranged on one side of the ventilation hole 24, absorbent cotton 26 is arranged in the ventilation hole 24, a net-shaped heat conduction sheet 33 is arranged in the absorbent cotton 26, one end of the net-shaped heat conduction sheet 33 is connected with the heat conduction plate 7, the diversion cover 25 divides the inner space of the rear shell 2 into a middle space and a peripheral space, the middle space guides cold air to enter, the peripheral space guides hot air to diffuse out, the air is filtered by a filter screen 11 to remove dust in the air, the air passes through a water curtain 28 from an air inlet hole 10, and a small amount of water vapor in the air can be taken away when the air passes through the water curtain 28, so that the temperature of the air is reduced, blow in ventilation hole 24 along the middle part space, absorb most steam in the air through cotton 26 that absorbs water, cold air blows heat-conducting plate 7 again, the temperature of heat-conducting plate 7 can reduce, heat through heat conduction line 32 and backlight unit 6 production carries out heat-conduction, thereby reduce backlight unit 6's temperature, reach the radiating effect, meanwhile, the partial heat of heat-conducting plate 7 conduction also can transmit for netted conducting strip 33, the heat of netted conducting strip 33 can make the moisture in the cotton 26 that absorbs water carry out the partial evaporation, prevent that cotton 26 that absorbs water from reaching the saturated condition, influence the heat dissipation.

The third embodiment comprises a front shell 1 and a rear shell 2, the front shell 1 and the rear shell 2 are fixedly connected through a buckle mechanism 3, a traffic alarm lamp 4 is arranged at the top of the front shell 1, a transparent heat insulation board 5, a backlight module 6, a heat conduction board 7, a temperature sensor 8, a drying box 34 and a heat dissipation board mechanism are sequentially arranged in the front shell 1 from left to right, a plurality of heat conduction lines 32 are connected between the backlight module 6 and the heat conduction board 7, the temperature sensor 8 is positioned at the top end of one side of the heat conduction board 7, the plurality of drying boxes 34 are uniformly distributed at two sides of the inner wall between the heat conduction board 7 and the heat dissipation board mechanism, an air inlet hole 10 is arranged at the center of the rear shell 2, a water tank 31 is arranged below the air inlet hole 10, a filter screen 11, an exhaust fan 12 and a small water tank 29 are sequentially arranged in the air inlet hole 10 from right to left, a water pump 30 is arranged above the small water tank 29, little water tank 29 below is equipped with cascade 28, cascade 28 below is equipped with backward flow cover 36, backshell 2 is outer along encircleing and being equipped with a plurality of through-holes 13, dry box 34 bottom is equipped with humidity transducer, the last silica gel that is equipped with of humidity transducer, little water tank 29 bottom evenly is equipped with a plurality of apertures, water pump 30 little water tank 29 backward flow cover 36 with all through water piping connection between the water tank 31, water pump 30 is from the water tank 31 in with the little water tank 29 of water suction, and water forms cascade 28 through the aperture of little water tank 29 bottom, and rivers in the cascade 28 flow into backward flow cover 36, and the rethread water pipe flows into water tank 31.

The fourth embodiment comprises a front shell 1 and a rear shell 2, the front shell 1 and the rear shell 2 are fixedly connected through a buckle mechanism 3, a traffic alarm lamp 4 is arranged at the top of the front shell 1, a transparent heat insulation plate 5, a backlight module 6, a heat conduction plate 7, a temperature sensor 8, a drying box 34 and a heat dissipation plate mechanism are sequentially arranged in the front shell 1 from left to right, a plurality of heat conduction lines 32 are connected between the backlight module 6 and the heat conduction plate 7, the temperature sensor 8 is positioned at the top end of one side of the heat conduction plate 7, the drying boxes 34 are uniformly distributed at two sides of the inner wall between the heat conduction plate 7 and the heat dissipation plate mechanism, an air inlet hole 10 is arranged at the center of the rear shell 2, a water tank 31 is arranged below the air inlet hole 10, a filter screen 11, an exhaust fan 12 and a small water tank 29 are sequentially arranged in the air inlet hole 10 from right to left, a water pump 30 is arranged above the small water tank 29, little water tank 29 below is equipped with cascade 28, cascade 28 below is equipped with backward flow cover 36, 2 outer edges of backshell encircle and are equipped with a plurality of through-holes 13, traffic light 4 temperature sensor 8 the air exhauster 12 fan 23 with humidity transducer all passes through wire electric connection, temperature sensor 8 with the red light of traffic light 4 is correlated with, humidity sensor with the green light of traffic light 4 is correlated with, if the higher red light of traffic light 4 of temperature just can be continuous scintillation, detects humidity when humidity sensor and reaches certain saturation, and the green light of traffic light 4 just can constantly glimmer, goes to remind the user.

For the convenience of understanding the technical solutions of the present invention, the following detailed description will be made on the working principle or the operation mode of the present invention in the practical process.

In summary, with the above technical solution of the present invention, in normal use, heat on the backlight module 6 is transferred to the heat conducting plate 7, the temperature of the backlight module 6 is detected by the temperature sensor 8, if the red light of the red/green alarm lamp 4 is flickering continuously, the user is reminded to turn on the exhaust fan 12 and the water pump 30, the water pump 30 pumps water from the water tank 31 into the small water tank 29, the water passes through the small holes at the bottom of the small water tank 29 to form the water curtain 28, water in the water curtain 28 flows into the return cover 36 and then flows into the water tank 31 through the water pipe, air passes through the filter screen 11 to be filtered to remove dust in the air, the air passes through the water curtain 28 from the air inlet hole 10, a small amount of water vapor in the air passes through the water curtain 28 to reduce the temperature of the air, the air is blown into the air vent 24 along the middle space, most of water vapor in the air is absorbed by the absorbent cotton 26, cold air is blown to the heat conducting plate 7, the temperature of the heat conducting plate 7 can be reduced, heat conduction is carried out through the heat conducting lines 32 and heat generated by the backlight module 6, so that the temperature of the backlight module 6 is reduced, a heat dissipation effect is achieved, meanwhile, partial heat conducted by the heat conducting plate 7 can also be transferred to the net-shaped heat conducting fins 33, the absorbent cotton 26 is prevented from reaching a saturated state, heat dissipation is influenced, the silica gel in the drying box 34 can further dry air, the humidity is reduced, when the humidity sensor detects that the humidity reaches certain saturation, the green light of the red and green alarm lamp 4 can continuously flicker to remind a user of replacing the silica gel, the fan 23 blows out hot air after heat conduction in an accelerated mode, the hot air is blown out of the device through the through holes 13 along the outer surface of the peripheral space, air flowing is accelerated, and heat dissipation efficiency is improved; when changing silica gel, can press according to pole 18 through 2 backshells, press pole 18 to promote connecting block 17 and extrude spring 16 downwards, press pole 18 to stimulate connecting rod 35 downwards, connecting rod 35 drives fixture block 19 and revolves two 21 clockwise rotations of axis of rotation, makes the terminal follow draw-in groove 27 internal rotation of fixture block 19 to in the holding tank 14, alright take off backshell 2 from epitheca 1 this moment.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The display screen backlight module heat dissipation device is characterized by comprising a front shell (1) and a rear shell (2), wherein the front shell (1) and the rear shell (2) are fixedly connected through a buckle mechanism (3), a red-green alarm lamp (4) is arranged at the top of the front shell (1), a transparent heat insulation plate (5), a backlight module (6), a heat conduction plate (7), a temperature sensor (8), a drying box (34) and a heat dissipation plate mechanism are sequentially arranged in the front shell (1) from left to right, a plurality of heat conduction lines (32) are connected between the backlight module (6) and the heat conduction plate (7), the temperature sensor (8) is positioned at the top end of one side of the heat conduction plate (7), the drying boxes (34) are uniformly distributed on two sides of the inner wall between the heat conduction plate (7) and the heat dissipation plate mechanism, an air inlet (10) is arranged at the center of the rear shell (2), air inlet (10) below is equipped with water tank (31), be equipped with filter screen (11), air exhauster (12) and little water tank (29) from the right side to a left side in proper order in air inlet (10), little water tank (29) top is equipped with water pump (30), little water tank (29) below is equipped with cascade (28), cascade (28) below is equipped with backward flow cover (36), backshell (2) are outer along encircleing and are equipped with a plurality of through-holes (13).

2. The heat dissipation device of claim 1, wherein the fastening mechanism (3) comprises accommodating grooves (14) symmetrically formed in the upper and lower sides of the inner surface of the rear housing (2), a groove (15) is formed in the accommodating groove (14), a spring (16) is formed in the groove (15), a connecting block (17) is arranged at the top end of the spring (16), a pressing rod (18) is arranged above the connecting block (17), the top end of the pressing rod (18) penetrates through the outer portion of the rear housing (2), one side of the pressing rod (18) is movably connected with a connecting rod (35) through a first rotating shaft (20), a clamping block (19) is movably connected to the other end of the connecting rod (35), the corner of the clamping block (19) is movably connected with the inner wall of the accommodating groove (14) through a second rotating shaft (21), clamping grooves (27) matched with the clamping block (19) are symmetrically formed in the upper and lower sides of the outer surface of the front housing (1), the clamping block (19) is clamped in the clamping groove (27).

3. The heat dissipation device of claim 1, wherein the heat dissipation plate mechanism comprises a heat dissipation plate (9), the heat dissipation plate (9) is located on the right side of the temperature sensor (8), a plurality of fixing holes (22) are uniformly formed in the heat dissipation plate (9), a fan (23) is disposed in each fixing hole (22), a vent hole (24) is disposed in the center of the heat dissipation plate (9), a diversion cover (25) is disposed on one side of the vent hole (24), absorbent cotton (26) is disposed in each vent hole (24), a net-shaped heat conduction sheet (33) is disposed in each absorbent cotton (26), and one end of each net-shaped heat conduction sheet (33) is connected with the heat conduction plate (7).

4. The heat sink for the backlight module of claim 3, wherein the air guide sleeve (25) divides the inner space of the rear housing (2) into a central space and a peripheral space, the central space guides the cold air to enter, and the peripheral space guides the hot air to exit.

5. The heat dissipation device of claim 3, wherein a humidity sensor is disposed at the bottom of the drying box (34), and the humidity sensor is provided with silica gel.

6. The heat dissipation device of the display screen backlight module as claimed in claim 1, wherein the small water tank (29) is uniformly provided with a plurality of small holes at the bottom, and the water pump (30), the small water tank (29), the reflux cover (36) and the water tank (31) are connected through water pipes.

7. The heat dissipation device of claim 5, wherein the traffic light (4), the temperature sensor (8), the exhaust fan (12), the fan (23), and the humidity sensor are electrically connected by wires, the temperature sensor (8) is associated with a red light of the traffic light (4), and the humidity sensor is associated with a green light of the traffic light (4).