CN115453789A

CN115453789A - Multi-region light control MINI LED backlight module

Info

Publication number: CN115453789A
Application number: CN202211313397.0A
Authority: CN
Inventors: 徐贤强; 姜发明
Original assignee: Shenzhen Australis Electronic Technology Co Ltd
Current assignee: Shenzhen Australis Electronic Technology Co Ltd
Priority date: 2022-10-25
Filing date: 2022-10-25
Publication date: 2022-12-09
Anticipated expiration: 2042-10-25
Also published as: CN115453789B

Abstract

The invention discloses a multi-region light control MINI LED backlight module, and relates to the technical field of backlight modules. This light MINI LED backlight unit is controlled to multizone, including bottom plate and the shell of setting on the bottom plate, fixedly connected with PCB board on the bottom plate one side relative with the shell, the fixedly connected with film body on the PCB board is provided with LED lamp pearl on the PCB board, and the PCB board is provided with and supports fixed establishment, fixedly connected with conducting strip between PCB board and the bottom plate. This multizone accuse light MINI LED backlight unit, the fixed plate is fixed the loading board, fix it through fixed plate and spacing frame and to it, and flexible piece supports it, consequently make LED lamp pearl when welding through pin and PCB board, do not need the manual work to control the location to LED lamp pearl, consequently, improve welding efficiency, ensure welding position's accurate nature simultaneously, there is great clearance simultaneously between LED lamp pearl and the PCB board, consequently, improve the radiating efficiency of PCB board and LED lamp pearl.

Description

Multi-region light control MINI LED backlight module

Technical Field

The invention relates to the technical field of backlight modules, in particular to a multi-region light control MINI LED backlight module.

Background

In recent years, LEDs (Light Emitting diodes) have been widely used in the field of illumination because of their advantages such as no pollution, good color rendering properties, and energy saving, and in the field of application to display devices such as liquid crystal televisions and notebook personal computers, LEDs have been replacing CCFLs (Cold Cathode Fluorescent lamps) and have become mainstream backlight sources.

According to the related literature, the LED lamp beads on the backlight module are generally manually butted with the welding position of the handheld LED lamp beads and the backlight power panel when being welded with the backlight power panel, the mode is easy to cause welding point deviation, meanwhile, the LED lamp beads are only supported by pins, the inclination phenomenon is easy to generate, and under the influence of external force, the LED lamp beads are easy to separate from the backlight power panel, so that the normal use of the backlight module is influenced.

Disclosure of Invention

The invention aims to solve at least one technical problem in the prior art, provides a multi-region light control MINI LED backlight module, and can solve the problem that welding points are easy to deviate due to the mode that welding points are butted at the welding positions of a handheld LED lamp bead and a backlight power supply plate manually.

In order to achieve the purpose, the invention provides the following technical scheme: multizone accuse light MINI LED backlight unit, including bottom plate and the shell of setting on the bottom plate, fixedly connected with PCB board on the relative one side of bottom plate and shell, the fixedly connected with membrance body on the PCB board is provided with LED lamp pearl on the PCB board, and the PCB board is provided with the support fixed establishment, fixedly connected with conducting strip between PCB board and the bottom plate.

Preferably, the fixed slot has been seted up on the bottom plate, the draw-in groove has been seted up on the inner wall of fixed slot, and the lower fixed surface of shell is connected with the connecting plate, and fixed connection has the fixture block for triangle-shaped on one side of connecting plate, the mutual adaptation of fixture block and draw-in groove, the just soft printing opacity material of shell.

Preferably, the bottom plate is provided with heat dissipation holes, the inside of each heat dissipation hole is fixedly connected with a heat conduction column, the heat conduction columns are mutually attached to the heat conduction sheets, the heat conduction columns are not fixedly connected with heat dissipation columns in contact with the heat conduction sheets, and the diameters of the heat conduction columns are twice of the diameters of the heat dissipation columns.

Preferably, support fixed establishment and include the spacing frame that is the n font of fixed connection on the PCB board, two rotation grooves have been seted up on the PCB board, the inside in rotation groove all is provided with the fixed plate for handstand L shape, the equal fixedly connected with supporting shoe in inside of two relative one sides of fixed plate and spacing frame, the equal sliding connection in inside of supporting shoe has the flexible piece, the equal fixedly connected with spring in inside of supporting shoe, the spring is not on the flexible piece with the one end fixed connection of supporting shoe inner wall contact, be provided with the loading board on the flexible piece, LED lamp pearl sets up on the loading board, be provided with the pin for wave on the LED lamp pearl, the pin is not with the one end fixedly connected with welding dish of LDE lamp pearl contact.

Preferably, the two ends of the bearing plate are respectively located in the limiting frame and the two fixing plates, and the inner walls of the fixing plates and the limiting frame are fixedly connected with insulating pads.

Preferably, two all seted up on the fixed plate and rotated the hole, the inside of rotating the hole all rotates and is connected with the pivot, and pivot fixed connection has cup jointed torsion spring in the inside of rotating the groove in the pivot activity, and two torsion arms of torsion spring are fixed connection respectively on the inner wall in pivot and rotation hole.

Preferably, the film body comprises a light shading glue, a lower bright enhancement film, an upper bright enhancement film, a first structural film and a third structural film.

The PCB board is provided with two rubber frames, the film body is arranged between the two rubber frames, and the PCB board is provided with a chip and protective rubber.

Compared with the prior art, the invention has the beneficial effects that:

(1) This multizone accuse light MINI LED backlight unit, when needs are welded to LDE lamp pearl and PCB board, insert the inside of spacing frame with the one end of loading board, and two fixed plates rotate relatively, two fixed plate atress are open mode this moment, consequently, place the one end of keeping away from spacing frame with the loading board between two fixed plates even, and do not exert oneself to the fixed plate, torque spring resets and drives the fixed plate and resets this moment, consequently, the fixed plate is fixed the loading board, fix it through fixed plate and spacing frame and to it, and flexible piece supports it, consequently, make LED lamp pearl when welding through pin and PCB board, do not control the location to LED lamp pearl in the needs manual work, consequently, welding efficiency is improved, guarantee welding position's accurate nature simultaneously, there is great clearance between LED lamp pearl and the PCB board simultaneously, consequently, improve the radiating efficiency of PCB board and LED lamp pearl.

(2) This multizone accuse light MINI LED backlight unit, the pin is the wave then makes this equipment when producing the vibration, and the sufficient LED lamp pearl of length of pin produces the displacement with the loading board and the pin can not break off with being connected of PCB board, consequently ensures the normal supply of power, and the setting of welding disk has then increased the welding area between pin and the PCB board, consequently makes it be difficult more to produce with the PCB board and break away from, and then ensures the illuminating effect of LED lamp pearl.

(3) This multizone accuse light MINI LED backlight unit, through setting up the spring in the supporting shoe is inside, when this backlight unit produced the vibration, the shrink of spring and expansion drive flexible piece and the inside production friction of supporting shoe, consequently through the shrink of frictional force and spring and the ability of expansion, cushion the power consumption to the vibration, and then make and be possessed good shock attenuation effect by backlight unit, consequently improve its life, reduce and damage the probability.

(4) This multizone accuse light MINI LED backlight unit, when the PCB board carries out the during operation, the heat of production is adsorbed by the conducting strip fast, and transmit to the heat conduction post through the conducting strip, transmit to the heat dissipation post through the heat conduction post afterwards, the diameter through the heat conduction post that sets up is the twice of heat dissipation post diameter, consequently, heat dissipation post diameter is less than the heat conduction post, and then the heat dissipation post does not contact with the inner wall of louvre, consequently, increase the area of heat dissipation post and outside air contact, and then improve radiating efficiency and speed, consequently, avoid the inside high temperature of shell to cause the damage to LED lamp pearl, and then improve its life, reduce the cost that changes and maintenance brought.

(5) This multizone accuse light MINI LED backlight unit crosses the inside of the heat conduction post fixed connection that sets up at the louvre, and the louvre still is encapsulated situation this moment, and then can effectually avoid external dust and moisture to enter into the inside of shell through the louvre and cause corruption and damage to its inside electronic equipment, consequently ensures the normal use of this equipment.

(6) This light MINI LED backlight unit is controlled to multizone, fixture block and the mutual adaptation of draw-in groove through setting up, consequently make the shell advance when being connected between with the bottom plate, only need with the fixture block card go into the inner wall of draw-in groove can, when needs are to dismantling, only need press the both sides of shell relatively, the shell atress produces deformation and drives connecting plate and fixture block removal, consequently, the fixture block breaks away from the inside of draw-in groove, and then convenient dismantlement and safety between shell and the bottom plate, therefore it is convenient, it is follow-up to maintain and change LED lamp pearl, do not use outside bolt to fix it simultaneously in needs, consequently, the efficiency of dismantling and installing is improved.

Drawings

The invention is further illustrated with reference to the following figures and examples:

FIG. 1 is a schematic structural view of a multi-region light-controlling MINI LED backlight module according to the present invention;

FIG. 2 is a schematic view of the base plate of the present invention shown disassembled from the housing;

FIG. 3 is a schematic front view of the base plate of the present invention;

FIG. 4 is a schematic view of a PCB board of the present invention;

FIG. 5 is a schematic right side view of a mounting plate of the present invention;

FIG. 6 is a schematic front view of an LED lamp bead of the present invention;

FIG. 7 is a schematic right side view of the support block of the present invention;

FIG. 8 is a schematic plan view of a membrane of the present invention.

Reference numerals are as follows: 1. a base plate; 101. fixing grooves; 102. a card slot; 103. heat dissipation holes; 104. a heat-dissipating post; 105. a heat-conducting column; 2. a housing; 201. a connecting plate; 202. a clamping block; 3. a PCB board; 301. a rotating groove; 302. protective glue; 303. a rubber frame; 4. a membrane body; 401. shading glue; 402. a lower brightness enhancement film; 403. a bright enhancement film is arranged; 404. a first structural film; 405. a first structural film; 406. a third structural film; 5. a limiting frame; 6. carrying a plate; 7. an LED lamp bead; 701. a pin; 702. welding a disc; 8. a support block; 801. a telescopic block; 802. a spring; 9. a fixing plate; 901. an insulating pad; 902. rotating the hole; 903. a torsion spring; 904. a rotating shaft; 10. a heat conductive sheet.

Detailed Description

Reference will now be made in detail to the present embodiments of the present invention, preferred embodiments of which are illustrated in the accompanying drawings, wherein the drawings are provided for the purpose of visually supplementing the description in the specification and so forth, and which are not intended to limit the scope of the invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, greater than, less than, exceeding, etc. are understood as excluding the present numbers, and the above, below, inside, etc. are understood as including the present numbers. If there is a description of first and second for the purpose of distinguishing technical features only, this is not to be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

The first embodiment is as follows:

referring to fig. 1-3, the present invention provides a technical solution: multizone accuse light MINI LED backlight unit, including bottom plate 1 and the shell 2 of setting on bottom plate 1, fixedly connected with PCB board 3 on the bottom plate 1 one side relative with shell 2, fixedly connected with film body 4 on the PCB board 3, be provided with LED lamp pearl 7 on the PCB board 3, PCB board 3 is provided with supports fixed establishment, fixedly connected with conducting strip 10 between PCB board 3 and the bottom plate 1.

The fixing groove 101 is formed in the bottom plate 1, the clamping groove 102 is formed in the inner wall of the fixing groove 101, the connecting plate 201 is fixedly connected to the lower surface of the shell 2, a triangular clamping block 202 is fixedly connected to one side of the connecting plate 201, the clamping block 202 is matched with the clamping groove 102, and the shell 2 is made of soft light-transmitting materials.

Through fixture block 202 and draw-in groove 102 mutual adaptation that sets up, consequently make shell 2 advance when being connected between with bottom plate 1, only need with fixture block 202 card go into draw-in groove 102 the inner wall can, when needs are to dismantling, only need press the both sides of shell 2 relatively, shell 2 atress produces deformation and drives connecting plate 201 and fixture block 202 removal, consequently fixture block 202 breaks away from the inside of draw-in groove 102, and then conveniently dismantle and safety between shell 2 and bottom plate 1, therefore it is convenient, it is follow-up to maintain and change LED lamp pearl 7, need not use outside bolt to fix it simultaneously, consequently, the efficiency of dismantling and installing is improved

Furthermore, the bottom plate 1 is provided with heat dissipation holes 103, the heat dissipation holes 103 are fixedly connected with heat conduction columns 105 inside, the heat conduction columns 105 are attached to the heat conduction sheet 10, the heat dissipation columns 104 are fixedly connected to the ends, not in contact with the heat conduction sheet 10, of the heat conduction columns 105, and the diameter of the heat conduction columns 105 is twice that of the heat dissipation columns 104.

When the PCB 3 works, the generated heat is quickly absorbed by the heat-conducting sheet 10, and is transmitted to the heat-conducting column 105 through the heat-conducting sheet 10, then is transmitted to the heat-radiating column 104 through the heat-conducting column 105, the diameter of the heat-conducting column 105 is twice of that of the heat-radiating column 104, therefore, the diameter of the heat-radiating column 104 is smaller than that of the heat-conducting column 105, further, the heat-radiating column 104 is not in contact with the inner wall of the heat-radiating hole 103, therefore, the contact area of the heat-radiating column 104 and the outside air is increased, further, the heat-radiating efficiency and speed are improved, further, the phenomenon that the LED lamp beads 7 are damaged due to overhigh temperature inside the shell 2 is avoided, the service life of the LED lamp beads is prolonged, and the cost expense caused by replacement and maintenance is reduced.

Simultaneously through the inside of heat conduction post 105 fixed connection at louvre 103 that sets up, louvre 103 is still for encapsulated situation this moment, and then can effectually avoid external dust and moisture to enter into the inside of shell 2 through louvre 103 and cause corruption and damage to its inside electronic equipment, consequently ensures the normal use of this equipment.

Example two;

referring to fig. 4-7, on the basis of the first embodiment, the supporting and fixing mechanism includes an n-shaped limiting frame 5 fixedly connected to the PCB 3, two rotating grooves 301 are formed on the PCB 3, fixing plates 9 having inverted L shapes are respectively disposed inside the rotating grooves 301, supporting blocks 8 are respectively fixedly connected to one sides of the two fixing plates 9 and the inside of the limiting frame 5, telescopic blocks 801 are respectively slidably connected to the inside of the supporting blocks 8, springs 802 are respectively fixedly connected to the inside of the supporting blocks 8, and one ends of the springs 802, which are not in contact with the inner walls of the supporting blocks 8, are fixedly connected to the telescopic blocks 801.

Furthermore, a bearing plate 6 is arranged on the telescopic block 801, an LED lamp bead 7 is arranged on the bearing plate 6, a wave-shaped pin 701 is arranged on the LED lamp bead 7, and a welding disc 702 is fixedly connected to one end, not contacted with the LDE lamp bead 7, of the pin 701.

The both ends of loading board 6 are located the inside of spacing frame 5 and the inside of two fixed plates 9 respectively, and equal fixedly connected with insulating pad 901 on the inner wall of fixed plate 9 and spacing frame 5.

Furthermore, rotation hole 902 has all been seted up on two fixed plates 9, and the inside of rotating hole 902 all rotates and is connected with pivot 904, and pivot 904 fixed connection has been cup jointed torsion spring 903 in the inside of rotating groove 301 in the activity of pivot 904, and two torsion arms of torsion spring 903 are fixed connection respectively on the inner wall of pivot 904 and rotation hole 902.

When the LDE lamp beads 7 and the PCB 3 need to be welded, one end of the bearing plate 6 is inserted into the limiting frame 5, the two fixing plates 9 rotate relatively, at the moment, the two fixing plates 9 are in an open state under stress, therefore, one end, far away from the limiting frame 5, of the bearing plate 6 is placed between the two fixing plates 9, force is not exerted on the fixing plates 9, at the moment, the torsion spring 903 resets to drive the fixing plates 9 to reset, therefore, the bearing plate 6 is fixed by the fixing plates 9, the limiting frame 5 and the limiting frame are fixed, and the telescopic blocks 801 support the limiting frame, therefore, when the LED lamp beads 7 are welded with the PCB 3 through the pins 701, the LED lamp beads 7 are not manually held and positioned, welding efficiency is improved, meanwhile, accuracy of welding positions is guaranteed, meanwhile, large gaps exist between the LED lamp beads 7 and the PCB 3, and heat dissipation efficiency of the PCB 3 and the LED lamp beads 7 is improved.

The wavy pins 701 enable the device to vibrate, the length of the pins 701 is enough for the LED lamp beads 7 to displace from the bearing plate 6, the pins 701 cannot be disconnected from the PCB 3, normal supply of a power supply is guaranteed, the welding area between the pins 701 and the PCB 3 is increased due to the arrangement of the welding disc 702, and therefore the pins 701 and the PCB 3 are not prone to being separated, and the lighting effect of the LED lamp beads 7 is guaranteed.

Meanwhile, through the spring 802 arranged inside the supporting block 8, when the backlight module vibrates, the contraction and expansion of the spring 802 drives the telescopic block 801 to rub with the inside of the supporting block 8, so that the vibration is buffered and energy is consumed through the friction force and the contraction and expansion capacity of the spring 802, the backlight module further has a good damping effect, the service life of the backlight module is prolonged, and the damage probability is reduced.

Referring to fig. 8, the film body 4 is composed of a light-shielding glue 401, a lower brightness enhancement film 402, an upper brightness enhancement film 403, a first structural film 404, a first structural film 405, and a third structural film 406.

Two rubber frames 304 are arranged on the PCB 3, the membrane body 4 is arranged between the two rubber frames 304, and a chip 302 and protective rubber 303 are arranged on the PCB 3.

Consequently, increase the holistic effect of being shaded of board through the membrane body 4 that sets up, make it brighter, improve its luminousness, improve 4 bulk strength of membrane body simultaneously, avoid it to produce broken phenomenon, improve its life, glue 303 through the protection that sets up on PCB board 3, consequently can protect chip 302 can not receive the damage, and then guarantee the stability in the equipment use.

The working principle is as follows: when LDE lamp pearl 7 and PCB board 3 welding need be when, insert the inside of spacing frame 5 with the one end of loading board 6, and rotate two fixed plates 9 relatively, two fixed plates 9 atresss are the open mode this moment, consequently, place the loading board 6 one end of keeping away from spacing frame 5 between even two fixed plates 9, and do not exerting oneself to fixed plate 9, torsion spring 903 resets and drives fixed plate 9 and reset this moment, consequently, fixed plate 9 fixes loading board 6, fix it to it through fixed plate 9 and spacing frame 5, and flexible piece 801 supports it, consequently, make LED lamp pearl 7 when welding through pin 701 and PCB board 3, do not control the location to LED lamp pearl 7 in the needs manual work.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. Multi-region light control MINI LED backlight unit, including bottom plate (1) and shell (2) of setting on bottom plate (1), its characterized in that: fixedly connected with PCB board (3) on bottom plate (1) and shell (2) relative one side, fixedly connected with membrane body (4) on PCB board (3), be provided with LED lamp pearl (7) on PCB board (3), PCB board (3) are provided with and support fixed establishment, fixedly connected with conducting strip (10) between PCB board (3) and bottom plate (1).

2. The multi-region light-controlling MINI LED backlight module of claim 1, wherein: the light-transmitting LED lamp is characterized in that a fixing groove (101) is formed in the bottom plate (1), a clamping groove (102) is formed in the inner wall of the fixing groove (101), a connecting plate (201) is fixedly connected to the lower surface of the shell (2), a triangular clamping block (202) is fixedly connected to one side of the connecting plate (201), the clamping block (202) is matched with the clamping groove (102) mutually, and the shell (2) is made of soft light-transmitting materials.

3. The multi-region light-controlling MINI LED backlight module according to claim 1, wherein: the radiating holes (103) are formed in the bottom plate (1), the heat-conducting columns (105) are fixedly connected to the inside of the radiating holes (103), the heat-conducting columns (105) are attached to the heat-conducting fins (10), and the radiating columns (104) are fixedly connected to the ends, not in contact with the heat-conducting fins (10), of the heat-conducting columns (105).

4. The multi-region light-controlling MINI LED backlight module of claim 3, wherein: the diameter of the heat conduction column (105) is twice that of the heat dissipation column (104).

5. The multi-region light-controlling MINI LED backlight module according to claim 1, wherein: support fixed establishment and include spacing frame (5) for the n font of fixed connection on PCB board (3), two rotation groove (301) have been seted up on PCB board (3), the inside in rotation groove (301) all is provided with fixed plate (9) to the handstand L shape, the equal fixedly connected with supporting shoe (8) in the inside of one side that two fixed plate (9) are relative and spacing frame (5), the equal sliding connection in inside of supporting shoe (8) has flexible piece (801), the equal fixedly connected with spring (802) in inside of supporting shoe (8), spring (802) do not with the one end fixed connection of supporting shoe (8) inner wall contact on flexible piece (801).

6. The multi-region light-controlling MINI LED backlight module of claim 5, wherein: be provided with loading board (6) on flexible piece (801), LED lamp pearl (7) set up on loading board (6), are provided with on LED lamp pearl (7) to wavy pin (701), one end fixedly connected with welding disc (702) that pin (701) do not contact with LDE lamp pearl (7).

7. The multi-region light-controlling MINI LED backlight module according to claim 7, wherein: the two ends of the bearing plate (6) are respectively positioned in the limiting frame (5) and the two fixing plates (9), and the inner walls of the fixing plates (9) and the limiting frame (5) are fixedly connected with insulating pads (901).

8. The multi-region light-controlling MINI LED backlight module of claim 5, wherein: two all seted up rotation hole (902) on fixed plate (9), the inside of rotating hole (902) all rotates and is connected with pivot (904), and pivot (904) fixed connection has been cup jointed torsion spring (903) in the inside of rotating groove (301) in pivot (904) activity, and two torsion arms of torsion spring (903) are fixed connection respectively on pivot (904) and the inner wall of rotating hole (902).

9. The multi-region light-controlling MINI LED backlight module according to claim 1, wherein: the film body (4) consists of a light shading glue (401), a lower brightness enhancement film (402), an upper brightness enhancement film (403), a first structural film (404), a first structural film (405) and a third structural film (406);

two rubber frames (304) are arranged on the PCB (3), the membrane body (4) is arranged between the two rubber frames (304), and a chip (302) and protective rubber (303) are arranged on the PCB (3).