CN220140048U

CN220140048U - PGU heat abstractor for HUD

Info

Publication number: CN220140048U
Application number: CN202321656042.1U
Authority: CN
Inventors: 刘景�
Original assignee: Shenzhen Ruisi Huachuang Automotive Electronics Co ltd
Current assignee: Shenzhen Ruisi Huachuang Automotive Electronics Co ltd
Priority date: 2023-06-27
Filing date: 2023-06-27
Publication date: 2023-12-05
Anticipated expiration: 2033-06-27

Abstract

The utility model discloses a PGU heat abstractor for HUD, comprising: a PGU, the PGU comprising: the LED lamp comprises a lower cover, a lamp panel, a collimating mirror, a diffusion sheet, an optical film, an LCD display screen, a hot mirror and an upper cover; the lamp panel, the collimating mirror, the diffusion sheet, the optical film, the LCD display screen and the heat mirror are sequentially arranged in the lower cover, and the upper cover is arranged above the heat mirror and is fixed with the lower cover into a whole; the fan is arranged at one end of the lower cover, and a plurality of through holes are formed in the lower cover corresponding to at least one side surface of the fan; and the top end of the radiator is fixedly connected with the bottom of the lower cover.

Description

PGU heat abstractor for HUD

Technical Field

The utility model relates to the technical field of HUD heat dissipation, in particular to a PGU heat dissipation device for HUD.

Background

The existing PGU (Picture Generation Unit) heat dissipation technical scheme of HUD (head up display) adopts a combination mode of an aluminum substrate, an interface material and an aluminum alloy radiator to dissipate heat, the Led lamp generates heat, the heat is transferred to the aluminum substrate, and the aluminum substrate transfers the heat to the aluminum alloy radiator through the interface material to perform heat radiation and natural convection heat dissipation. The Led lamp emits light, the light and heat are transferred to the Lcd screen to be absorbed, and the Lcd screen performs heat radiation and natural convection heat dissipation.

The heat dissipation through the above solution has several drawbacks: 1. the Led lamp has high power, large heating value and quicker heating of the display screen, and influences the display effect; 2. the Lcd screen has low transmittance, most of light and heat are absorbed by the Lcd, and the heat dissipation is not facilitated; 3. sunlight focuses on the Lcd screen, the temperature of the display screen rises quickly, and the Lcd solar backflow irradiation area is damaged.

Disclosure of Invention

Aiming at the problems existing in the prior art, the utility model provides a PGU heat dissipation device for HUD.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

a PGU heat sink for a HUD, comprising:

a PGU, the PGU comprising: the LED lamp comprises a lower cover, a lamp panel, a collimating mirror, a diffusion sheet, an optical film, an LCD display screen, a hot mirror and an upper cover; the lamp panel, the collimating mirror, the diffusion sheet, the optical film, the LCD display screen and the heat mirror are sequentially arranged in the lower cover, and the upper cover is arranged above the heat mirror and is fixed with the lower cover into a whole;

the fan is arranged at one end of the lower cover, and a plurality of through holes are formed in the lower cover corresponding to at least one side surface of the fan;

and the top end of the radiator is fixedly connected with the bottom of the lower cover.

Optionally, the heat dissipating device further includes a heat conductive silica gel, and the heat conductive silica gel is disposed between the lower cover and the heat sink.

Optionally, two fixing blocks are further arranged on the lower cover.

Optionally, the heat sink includes a plurality of fins.

The technical scheme of the utility model has the following beneficial effects:

the PGU is provided with the plurality of through holes on at least one side surface, and is provided with the fan, the fan performs forced air cooling convection heat dissipation on the PGU through the through holes, meanwhile, the forced convection heat dissipation is performed on the LCD screen through the through holes, and in addition, the PGU is subjected to auxiliary heat dissipation through the radiator, so that the heat dissipation efficiency is improved; therefore, the utility model has the advantages of improving the heat dissipation and heat removal capability of the PGU and improving the temperature of the LCD screen by reducing the internal environment temperature of the PGU, thereby improving the display quality of the LCD screen and prolonging the service life, improving the safety of the LCD screen and solving the problem of solar backflow heat dissipation and protection of the LCD screen.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

fig. 2 is a schematic diagram of an explosive structure according to the present utility model.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, a first feature is "on" or "to a second feature unless explicitly specified and defined otherwise

"under" may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact by another feature therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Referring to fig. 1 and 2, the present utility model provides a PGU heat sink device for HUD, including:

PGU1, the PGU1 comprising: a lower cover 14, a lamp panel 12, a collimating mirror 13, a diffusion sheet q5, an optical film 16, an LCD display 17, a heat mirror 18 and an upper cover 19; the lamp panel 12, the collimating mirror 13, the diffusion sheet 15, the optical film 16, the LCD display screen 17 and the heat mirror 18 are sequentially arranged in the lower cover 14, and the upper cover 19 is arranged above the heat mirror 18 and is fixed with the lower cover 14 into a whole;

a fan 2, wherein the fan 2 is disposed at one end of the lower cover 14, and a plurality of through holes 142 are disposed on at least one side surface of the lower cover 14 corresponding to the fan 2;

the top end of the radiator 3 is fixedly connected with the bottom of the lower cover 14;

the lower cover 14 is provided with a plurality of through holes 142 corresponding to three sides of the fan, specifically, when the fan 2 works, convection cold air of the fan 2 flows in through the through holes 142 close to one side of the fan, the flowing cold air forms a circulation inside the PGU1, the cold air circulates to each component in the PGU1 to dissipate heat, particularly the LCD display 17 dissipates heat, and the air after heat dissipation flows out from the through holes 142 of the other two sides of the PGU1, so that the circulation heat dissipation of each component inside the PGU is realized; in addition, the heat sink 3 performs auxiliary heat dissipation, and also provides heat dissipation capability for the PGU 1.

In this embodiment, as shown in fig. 2, the heat dissipating device further includes a heat conducting silica gel 11, and the heat conducting silica gel 11 is disposed between the lower cover 14 and the heat sink 3; specifically, the PGU1 conducts heat through the thermally conductive silica gel 11 and finally radiates heat through the heat radiator 3, wherein the heat radiator 3 includes a plurality of heat radiating fins.

In this embodiment, as shown in fig. 1 and 2, two fixing blocks 141 are further disposed on the lower cover 14, and specifically, the PGU1 is conveniently fixed and installed by the two fixing blocks 141.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims

1. A PGU heat sink for a HUD, comprising:

2. The PGU heat sink apparatus for use in a HUD of claim 1, wherein the heat sink apparatus further comprises a thermally conductive silicone disposed between the lower cover and the heat sink.

3. The PGU heat sink apparatus for HUD according to claim 1, wherein the lower cover further has two fixing blocks.

4. A PGU heat sink unit for a HUD according to claim 1, wherein the heat sink includes a plurality of fins.