CN212322030U

CN212322030U - Integrated backlight driver of liquid crystal display screen

Info

Publication number: CN212322030U
Application number: CN202020804594.2U
Authority: CN
Inventors: 傅贻峰
Original assignee: Hunan Jinhong Photoelectric Co ltd
Current assignee: Hunan Jinhong Photoelectric Co ltd
Priority date: 2020-05-14
Filing date: 2020-05-14
Publication date: 2021-01-08
Anticipated expiration: 2030-05-14

Abstract

The utility model discloses a liquid crystal display integration backlight driver, including drive shell and drive component, liquid crystal display integration backlight driver, the whole device is when operation, and the circuit board makes the two become an organic whole through linking nut and mounting plate swing joint, can't avoid the phenomenon that inside precision component overheated and make its damage take place in the device operation process, and the heat dissipation slotted hole can increase the radiating effect of device, and when first switch switched on, the energy on C1 was released to R1; when the second power switch is conducted, the energy on the C2 is released to the R1, the alternating current voltage amplitude inside the device is reduced through the alternate conduction of the first power switch and the second power switch, the half-bridge type inverter circuit can be used for low-power inversion, the circuit structure of the device is simple, the C1 and the C2 are connected in series, magnetic bias or direct current components cannot be generated, and the device is suitable for loads with transformers.

Description

Integrated backlight driver of liquid crystal display screen

Technical Field

The utility model relates to a liquid crystal display technical field specifically is a liquid crystal display integration backlight driver.

Background

The backlight source of the cold cathode fluorescent lamp in the functional circuit of the liquid crystal display and the liquid crystal television is a main power consumption component, the larger the screen is, the larger the power consumption is, the electric energy efficiency of the backlight source of the cold cathode fluorescent lamp is improved, and the power consumption of the whole machine can be effectively reduced.

In the operation process of the liquid crystal display screen, the backlight drivers are indispensable devices, and most of the backlight drivers in the current market have the problems of overhigh alternating voltage amplitude of the device, poor heat dissipation effect of the device and complex circuit structure.

In order to solve the above problems, an integrated backlight driver for a liquid crystal display is proposed to improve the ac voltage amplitude of the device, the heat dissipation effect of the device, and the circuit structure of the backlight driver.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a liquid crystal display integration backlight driver, including drive shell and drive component, liquid crystal display integration backlight driver, the whole device is when operation, and the circuit board makes the two become an organic whole through linking nut and mounting plate swing joint, can't avoid the phenomenon that inside precision component overheated and make its damage take place in the device operation process, and the heat dissipation slotted hole can increase the radiating effect of device, and when first switch switched on, the energy on C1 was released to R1; when the second power switch is switched on, the energy on the C2 is released to the R1, the first power switch and the second power switch are switched on in turn, the alternating voltage amplitude inside the device is reduced, the half-bridge inverter circuit can be used for low-power inversion, the circuit structure of the device is simple, the C1 and the C2 are connected in series and cannot generate magnetic bias or direct current component, the device is suitable for loads with transformers, the alternating voltage amplitude of the device and the heat dissipation effect and the circuit structure of the device are improved, and the problems in the background art are solved.

In order to achieve the above object, the utility model provides a following technical scheme: a liquid crystal display integrated backlight driver comprises a driving shell and a driving component, wherein the driving component is installed at the side end of the driving shell, the driving shell comprises an installation bottom plate, a circuit board, an installation box, a heat dissipation shell, a top cover plate and communication holes, the circuit board is installed at the upper end of the installation bottom plate, the installation box is installed at the upper end of the circuit board, the heat dissipation shell is installed at the top end of the installation box, the top cover plate is installed in the inner cavity of the heat dissipation shell, the communication holes are formed in two sides of the upper end of the top cover plate, the driving component is installed at the side end of the installation box and comprises a first power switch, a DC-AC converter, a data communication shell and a second power switch, the first power switch is arranged on the right side of the side end of the installation box, the DC-AC converter is installed on the left side, and a second power switch is installed at the left end of the first power switch.

Further, the circuit board comprises a support plate, a plate body and a linking nut, wherein the plate body is installed at the upper end of the support plate, and the linking nut is installed at the edge of the upper end of the plate body.

Further, the heat dissipation shell comprises a shell body, heat dissipation slotted holes and mounting flanges, the heat dissipation slotted holes are formed in the side ends of the shell body, and the mounting flanges are arranged on two sides of the top end of the shell body.

Furthermore, the other ends of the first power switch and the second power switch are electrically connected with the DC-AC converter.

Further, the first power switch is connected in series with the C1, the second power switch is connected in series with the C2, the C1 and the C2 are connected in series with the negative electrode of the R1, and the other end of the R1 is connected in series with the first power switch and the second power switch.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model provides a liquid crystal display integration backlight driver, integrated device are when the operation, and the circuit board makes the two become a whole through linking up nut and mounting plate swing joint, can't avoid inside accurate component overheated and make its phenomenon of damaging take place at the device operation in-process, and the heat dissipation slotted hole can increase the radiating effect of device.

2. When the first power switch of the liquid crystal display screen integrated backlight driver provided by the utility model is switched on, the energy on the C1 is released to the R1; when the second power switch is turned on, the energy on the C2 is released to the R1, and the amplitude of the alternating current voltage in the device is reduced through the alternate conduction of the first power switch and the second power switch.

3. The utility model provides a liquid crystal display integration backlight driver, this half-bridge inverter circuit can be used to the miniwatt contravariant, and the circuit structure of this device is simple, and C1 establishes ties with C2 and can not produce magnetic bias or direct current component, is fit for taking the transformer load.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a disassembled view of the driving housing of the present invention;

fig. 3 is a circuit diagram of the internal mechanism of the present invention.

In the figure: 1. a drive housing; 11. mounting a bottom plate; 12. a circuit board; 121. a carrier plate; 122. A plate body; 123. a joining nut; 13. mounting a box; 14. a heat dissipation housing; 141. a housing shell; 142. a heat dissipation slot; 143. installing a flange; 15. a top cover plate; 16. a communicating hole; 2. A drive member; 21. a first power switch; 22. a DC-AC converter; 23. a data communication shell; 24. a second power switch.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, an integrated backlight driver for a liquid crystal display includes a driving housing 1 and a driving member 2, the driving member 2 is installed at a side end of the driving housing 1, the driving housing 1 includes a mounting base plate 11, a circuit board 12, a mounting box 13, a heat dissipation housing 14, a top cover plate 15 and a communication hole 16, the circuit board 12 is installed at an upper end of the mounting base plate 11, the circuit board 12 includes a carrier plate 121, a plate body 122 and a coupling nut 123, the plate body 122 is installed at an upper end of the carrier plate 121, the coupling nut 123 is installed at an upper end edge of the plate body 122, the mounting box 13 is installed at an upper end of the circuit board 12, the heat dissipation housing 14 is installed at a top end of the mounting box 13, the heat dissipation housing 14 includes a housing 141, heat dissipation slots 142 and a mounting flange 143, the, a top cover plate 15 is installed in the inner cavity of the heat dissipation shell 14, communication holes 16 are formed in two sides of the upper end of the top cover plate 15, a driving member 2 is installed at the side end of the installation box 13, the driving member 2 comprises a first power switch 21, a DC-AC converter 22, a data communication shell 23 and a second power switch 24, the first power switch 21 is arranged on the right side of the side end of the installation box 13, the DC-AC converter 22 is installed on the left side of the side end of the installation box 13, the data communication shell 23 is installed on the left side of the DC-AC converter 22, the second power switch 24 is installed on the left end of the first power switch 21, the other ends of the first power switch 21 and the second power switch 24 are electrically connected with the DC-AC converter 22, the first power switch 21 is connected with a C1 in series, the second power switch 24 is connected with a C2 in series, a C1 and a C2 are connected with the negative electrode of an R36, the utility model provides a liquid crystal display integration backlight driver, integrated device are when moving, and circuit board 12 makes the two become a whole through linking nut 123 and mounting plate 11 swing joint, can't avoid the phenomenon that inside accurate component is overheated and makes its damage to take place in the device operation process, and heat dissipation slotted hole 142 can increase the radiating effect of device, and when first switch 21 switched on, the energy on C1 released to R1; when the second power switch 24 is conducted, the energy on the C2 is released to the R1, the alternating current voltage amplitude inside the device is reduced through the alternate conduction of the first power switch 21 and the second power switch 24, the half-bridge inverter circuit can be used for low-power inversion, the circuit structure of the device is simple, the C1 and the C2 are connected in series, magnetic bias or direct current components cannot be generated, and the device is suitable for loads with transformers.

In summary, the following steps: the utility model provides a liquid crystal display integration backlight driver, integrated device are when moving, and circuit board 12 makes the two become a whole through linking nut 123 and mounting plate 11 swing joint, can't avoid the phenomenon that inside accurate component is overheated and makes its damage to take place in the device operation process, and heat dissipation slotted hole 142 can increase the radiating effect of device, and when first switch 21 switched on, the energy on C1 released to R1; when the second power switch 24 is conducted, the energy on the C2 is released to the R1, the alternating current voltage amplitude inside the device is reduced through the alternate conduction of the first power switch 21 and the second power switch 24, the half-bridge inverter circuit can be used for low-power inversion, the circuit structure of the device is simple, the C1 and the C2 are connected in series, magnetic bias or direct current components cannot be generated, and the device is suitable for loads with transformers.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a liquid crystal display integration backlight driver, includes drive shell (1) and drive member (2), its characterized in that are installed to the side of drive shell (1): the driving shell (1) comprises a mounting base plate (11), a circuit board (12), a mounting box (13), a heat dissipation shell (14), a top cover plate (15) and communication holes (16), the circuit board (12) is mounted at the upper end of the mounting base plate (11), the mounting box (13) is mounted at the upper end of the circuit board (12), the heat dissipation shell (14) is mounted at the top end of the mounting box (13), the top cover plate (15) is mounted in an inner cavity of the heat dissipation shell (14), the communication holes (16) are formed in two sides of the upper end of the top cover plate (15), a driving component (2) is mounted at the side end of the mounting box (13), the driving component (2) comprises a first power switch (21), a DC-AC converter (22), a data communication shell (23) and a second power switch (24), the first power switch (21) is arranged on the right side of the mounting box, the left side of the side end of the mounting box (13) is provided with a DC-AC converter (22), the left side of the DC-AC converter (22) is provided with a data communication shell (23), and the left end of the first power switch (21) is provided with a second power switch (24).

2. The integrated backlight driver of claim 1, wherein: the circuit board (12) comprises a carrier plate (121), a plate body (122) and a connecting nut (123), wherein the plate body (122) is installed at the upper end of the carrier plate (121), and the connecting nut (123) is installed at the edge of the upper end of the plate body (122).

3. The integrated backlight driver of claim 1, wherein: the heat dissipation shell (14) comprises a shell body (141), heat dissipation slotted holes (142) and mounting flanges (143), the heat dissipation slotted holes (142) are formed in the side ends of the shell body (141), and the mounting flanges (143) are arranged on two sides of the top end of the shell body (141).

4. The integrated backlight driver of claim 1, wherein: the other ends of the first power switch (21) and the second power switch (24) are electrically connected with the DC-AC converter (22).

5. The integrated backlight driver of claim 1, wherein: the first power switch (21) is connected with the C1 in series, the second power switch (24) is connected with the C2 in series, the C1 and the C2 are connected with the negative pole of the R1 in series, and the other end of the R1 is connected with the first power switch (21) and the second power switch (24) in series.