CN213987044U

CN213987044U - PGU thermal load management device of head-up display

Info

Publication number: CN213987044U
Application number: CN202120232692.8U
Authority: CN
Inventors: 李城锦; 汤赵斌
Original assignee: Hardston Mobile Media Asia Pacific Co ltd
Current assignee: Hardston Mobile Media Asia Pacific Co ltd
Priority date: 2021-01-27
Filing date: 2021-01-27
Publication date: 2021-08-17
Anticipated expiration: 2031-01-27

Abstract

The utility model belongs to the technical field of the new line display, especially, be a new line display PGU thermal load management device, including light source subassembly, lens subassembly, polaroid, diffusion subassembly and TFT display module, the light source subassembly includes circuit board and LED light source, the surface at the circuit board is installed to the LED light source, the lens subassembly includes shell and anti-dazzle piece, the inside at the shell is installed to the anti-dazzle piece. The utility model discloses a use of lens subassembly, can disperse the high strength light source that the LED light source produced, separate into P light and S light through the polaroid, set up for the slope through polaroid and lens subassembly and display module for the polaroid presents special inclination, when S light under special inclination, take place the reflection from TFT display module photic surface, can effectively prevent not participating in the gathering of S light that shows on TFT display module and produce the heat, and then realize that TFT display module produces the problem of high temperature.

Description

PGU thermal load management device of head-up display

Technical Field

The utility model relates to a new line display technical field specifically is a new line display PGU thermal load management device.

Background

In the TFT display technology, since the TFT display panel is a passive display, a special backlight illumination is required to display an image. Light is known to be energetic and is directly manifested as heat; the PGU of the head-up display requires backlight illumination of up to 1000 lumens, and the transmittance of the TFT is only about 6% -8%, and approximately 92% -94% of light energy is converted into heat energy to be applied to the TFT, which causes fatal damage to the TFT, namely, a high temperature problem.

On current TFT product application, the product that meets the high temperature problem is liquid crystal projector, adopts the fan to accelerate the air convection to dispel the heat mostly, however this scheme is not applicable to the new line display, adopts the fan to accelerate the air convection and carries out radiating mode very tradition, though the effect is showing, nevertheless can increase the mechanical complexity and the space occupancy of product, also can bring influences such as noise simultaneously, consequently, in order to solve above problem, the utility model provides a new line display PGU heat load management device.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a new line display PGU thermal load management device has solved TFT's under the high brightness backlight, makes TFT ability safety and stability work, satisfies the problem of new line display's luminance requirement simultaneously.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a PGU thermal load management device of a head-up display comprises a light source assembly, a lens assembly, a polaroid, a diffusion assembly and a TFT display assembly, wherein the light source assembly comprises a circuit board and an LED light source, the LED light source is installed on the surface of the circuit board, the lens assembly comprises a shell and an anti-dazzle light sheet, the anti-dazzle light sheet is installed inside the shell, one side of the shell is fixedly connected with the surface of the circuit board, the LED light source is installed inside the shell, the TFT display assembly comprises a fixing frame and a display screen, the display screen is installed on the surface of the fixing frame, the polaroid is installed on the back of the display screen, and the diffusion assembly is installed between the display screen and the polaroid.

As an optimal technical scheme of the utility model, the high intensity light source that the LED light source sent forms TFT through the lens subassembly and is shaded, and TFT is shaded and is converted into the optical element of linearly polarized light through the polaroid.

As an optimized technical scheme of the utility model, the optical element that TFT is shaded and is converted into linearly polarized light through the polaroid specifically is: the TFT backlight is separated into P light and S light after passing through the polarizing plate, and the P light and the S light each account for 50% of the TFT backlight.

As an optimized technical scheme of the utility model, P light is TFT display module 'S invalid light wave, and mainly produces the heat effect, and S light is for participating in TFT display module' S valid light wave.

As a preferred technical solution of the present invention, the polarizer is disposed between the lens assembly and the TFT display assembly, and forms a certain special inclination angle.

As an optimized technical scheme of the utility model, diffusion subassembly includes diffusion barrier and lower diffusion barrier, go up the fixed surface of diffusion barrier and lower diffusion barrier and be connected.

As a preferred technical scheme of the utility model, the surface of polaroid is pressed close to diffusion barrier down for convert uneven light source in the polaroid to evenly distributed, the area source of fuzzy site, go up the diffusion barrier and be located the back of display screen, possess the highlight penetrability, can improve the visual angle and increase the soft nature of light source.

As a preferred technical scheme of the utility model, fixed frame is the slope setting with the shell, the surface of polaroid all is parallel to each other with the surface of TFT display module and lens subassembly.

(III) advantageous effects

Compared with the prior art, the utility model provides a new line display PGU thermal load management device possesses following beneficial effect:

1. this new line display PGU heat load management device, use through the lens subassembly, can disperse the high strength light source that the LED light source produced, separate into P light and S light through the polaroid, set up for the slope through polaroid and lens subassembly and display module, make the polaroid present special inclination, when S light under special inclination, take place to reflect from TFT display module photic surface, can effectively prevent not participating in the gathering of S light that shows on TFT display module and produce the heat, and then realize that TFT display module produces the problem of high temperature.

2. According to the PGU thermal load management device of the head-up display, the light source assembly, the lens assembly, the polaroid, the diffusion assembly and the display assembly are formed, so that the problem of high-temperature load of the TFT under high-brightness work is solved on the premise that the mechanical complexity and the space occupancy of a product are not increased.

Drawings

FIG. 1 is a front view of the present invention;

fig. 2 is a side view of the present invention;

FIG. 3 is a schematic structural view of the diffusion assembly of the present invention;

fig. 4 is a schematic plane light path diagram of the present invention.

In the figure: 1. a light source assembly; 101. a circuit board; 102. an LED light source; 2. a lens assembly; 201. a housing; 202. an anti-glare sheet; 3. a polarizing plate; 4. a diffusion component; 401. an upper diffusion film; 402. a lower diffusion film; 5. a TFT display element; 501. a fixing frame; 502. a display screen.

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.

Examples

Referring to fig. 1-4, the present invention provides the following technical solutions: the utility model provides a new line display PGU thermal load management device, including light source subassembly 1, lens subassembly 2, polaroid 3, diffusion subassembly 4 and TFT display module 5, light source subassembly 1 includes circuit board 101 and LED light source 102, LED light source 102 is installed on the surface of circuit board 101, lens subassembly 2 includes shell 201 and anti-glare sheet 202, anti-glare sheet 202 installs the inside at shell 201, one side and the fixed surface of circuit board 101 of shell 201 are connected, LED light source 102 installs the inside at shell 201, TFT display module 5 includes fixed frame 501 and display screen 502, the surface at fixed frame 501 is installed to display screen 502, the back at display screen 502 is installed to polaroid 3, diffusion subassembly 4 installs between display screen 502 and polaroid 3.

In this embodiment, the circuit board 101 is for cooperating with the use of LED light source 102, make this light source subassembly 1 can switch on and use, use at lens subassembly 2, can disperse the high intensity light source that LED light source 102 produced, then under the effect of polaroid 3, separate into P light and S light with the light source, polaroid 3 sets up for the slope simultaneously, make S light at special inclination, can intercept P light, avoid the high temperature in the P light to pass through TFT display module 5, the realization dispels the heat to this TFT display module 5.

Specifically, the high-intensity light source emitted by the LED light source 102 passes through the lens assembly 2 to form a TFT backlight, and the TFT backlight is converted into an optical element of linearly polarized light by the polarizer 3.

In this embodiment, the lens assembly 2 is used for diffusing the high-intensity light source generated by the LED light source 102, so that the diffused light source is converted by the polarizer 3, and the light source is separated into S light and P light, and the P light can be effectively blocked due to the special inclination angle of the polarizer 3, thereby avoiding the problem of high temperature generated by the TFT display assembly 5.

Specifically, the optical element for converting the TFT backlight into linearly polarized light by the polarizer 3 is specifically: the TFT backlight is separated into P light and S light after passing through the polarizing plate 3, and the P light and the S light each account for 50% of the TFT backlight.

In this embodiment, when the TFT backlight passes through the polarizer 3, and the polarizer 3 has a special inclination angle, the light source is separated into P light and S light, and the S light is illuminated by the TFT display assembly 5 at the special inclination angle to be emitted, so that the P light can be blocked from passing through the TFT display assembly 5, and further the heat in the P light can be effectively prevented from passing through the TFT display assembly 5.

Specifically, the P light is an ineffective light wave of the TFT display device 5 and mainly generates a heat effect, and the S light is an effective light wave participating in the TFT display device 5.

In this embodiment, because the S light is at a special inclination angle, the P light can be blocked from focusing on the TFT display device 5 to generate heat, thereby effectively preventing the TFT display device 5 from generating a high temperature problem.

Specifically, the polarizer 3 is disposed between the lens assembly 2 and the TFT display assembly 5, and forms a specific tilt angle.

In this embodiment, the polarizer 3 is disposed at an inclined angle so that the P light is intercepted by the polarizer 3, and only the S light can pass through the polarizer 3, and then 42% to 44% of the S light passes through the polarizer 3 to generate heat to act on the TFT display assembly 5, and the heat management efficiency reaches 53%.

Specifically, the diffusion member 4 includes an upper diffusion membrane 401 and a lower diffusion membrane 402, and a surface of the upper diffusion membrane 401 is fixedly connected to a surface of the lower diffusion membrane 402.

In this embodiment, the upper diffusion film 401 and the lower diffusion film 402 are used to make the light source generate many refraction, reflection and scattering phenomena, so as to correct the light to form a uniform surface light source to achieve the effect of optical diffusion.

Specifically, the lower diffusion film 402 is close to the surface of the polarizer 3 for converting the uneven light source in the polarizer 3 into a surface light source with uniformly distributed and fuzzy dots, and the upper diffusion film 401 is located on the back of the display screen 502, so that the high light penetration capability is achieved, the viewing angle can be improved, and the softness of the light source is increased.

In this embodiment, the diffusion component 4 is composed of a combination of an upper diffusion film 401 and a lower diffusion film 402, and is mainly used for forming a diffusion angle for the light source, so that the light radiation area is increased.

Specifically, the fixing frame 501 and the housing 201 are both obliquely arranged, and the surfaces of the polarizer 3 and the surfaces of the TFT display assembly 5 and the lens assembly 2 are both parallel to each other.

In this embodiment, the fixing frame 501 and the housing 201 are both arranged obliquely, so as to cooperate with the polarizer 3, so that a certain inclination angle is formed between the polarizer 3 and the fixing frame 501 and the housing 201, so as to illuminate the TFT display module 5 at an angle θ through the S light passing through the polarizer 3, and at the same time, a part of the S light is reflected from the light receiving surface of the TFT display module 5 at the angle θ, thereby effectively preventing the S light not participating in display from gathering on the TFT display module 5 to generate heat, and further avoiding the problem of high temperature of the TFT display module 5.

The utility model discloses a theory of operation and use flow: when in use, the natural light formed by the high-intensity light source generated by the LED light source 102 after passing through the lens component 2 is separated into S light and P light by the polaroid 3 under the use of the polaroid 3, because the polaroid 3 is arranged between the shell 201 and the fixing frame 501 and presents a certain special inclination angle, the P light is intercepted by the polaroid 3, only the S light can pass through the polaroid 3, the S light illuminates the TFT display component 5 through the diffusion component 4 under the special inclination angle, and simultaneously, a part of the S light is reflected from the light receiving surface of the TFT display component 5 by the special inclination angle, thereby effectively preventing the S light which does not participate in the display from gathering on the TFT display component 5 to generate heat, and further avoiding the high temperature problem of the TFT display component 5, the utility model solves the problem of the high temperature load of the TFT under the high-brightness work on the premise of not increasing the mechanical complexity and the space occupancy of the product, the practicality is stronger, is worth promoting.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a new line display PGU heat load management device, includes light source subassembly (1), lens subassembly (2), polaroid (3), diffusion subassembly (4) and TFT display module (5), its characterized in that: the light source assembly (1) comprises a circuit board (101) and an LED light source (102), the LED light source (102) is installed on the surface of the circuit board (101), the lens assembly (2) comprises a shell (201) and an anti-glare sheet (202), the anti-glare sheet (202) is installed inside the shell (201), one side of the shell (201) is fixedly connected with the surface of the circuit board (101), the LED light source (102) is installed inside the shell (201), the TFT display assembly (5) comprises a fixing frame (501) and a display screen (502), the display screen (502) is installed on the surface of the fixing frame (501), the polaroid (3) is installed on the back of the display screen (502), and the diffusion assembly (4) is installed between the display screen (502) and the polaroid (3).

2. The PGU thermal load management apparatus of claim 1, wherein: the high-intensity light source emitted by the LED light source (102) forms TFT backlight through the lens component (2), and the TFT backlight is converted into an optical element of linearly polarized light through the polaroid (3).

3. The PGU thermal load management apparatus of claim 2, wherein: the TFT backlight is an optical element which is converted into linearly polarized light through a polarizing plate (3), and the optical element comprises the following components: the TFT backlight is separated into P light and S light after passing through the polarizing plate (3), and the P light and the S light respectively account for 50% of the TFT backlight.

4. The PGU thermal load management device of claim 3, wherein: the P light is an invalid light wave of the TFT display component (5) and mainly generates a heat effect, and the S light is an effective light wave participating in the TFT display component (5).

5. The PGU thermal load management apparatus of claim 1, wherein: the polaroid (3) is arranged between the lens component (2) and the TFT display component (5) and forms a certain special inclination angle.

6. The PGU thermal load management apparatus of claim 1, wherein: the diffusion component (4) comprises an upper diffusion film (401) and a lower diffusion film (402), and the surface of the upper diffusion film (401) is fixedly connected with the surface of the lower diffusion film (402).

7. The PGU thermal load management device of claim 6, wherein: the lower diffusion film (402) is close to the surface of the polaroid (3) and used for converting an uneven light source in the polaroid (3) into a surface light source with uniformly distributed and fuzzy dots, and the upper diffusion film (401) is positioned on the back of the display screen (502), so that the high light penetration capability is realized, the visual angle can be improved, and the softness of the light source is improved.

8. The PGU thermal load management apparatus of claim 1, wherein: the fixing frame (501) and the shell (201) are obliquely arranged, and the surfaces of the polaroids (3) are parallel to the surfaces of the TFT display assembly (5) and the lens assembly (2).