Heat dissipation lamp box for display, image generation unit and head-up display

Abstract

The utility model discloses a heat dissipation lamp box for a display, an image generation unit and a vehicle-mounted head-up display, the heat dissipation lamp box for the display comprises a box main body and a ventilation structure arranged on the box main body, the box main body is used for installing a light-emitting assembly and a display screen assembly, and a light-emitting cavity is formed between the light-emitting assembly and the display screen assembly; an air inlet and an air outlet which are communicated with the light-emitting cavity are formed in the peripheral side of the box body at intervals through the ventilation structure so as to form a ventilation channel, air flows into the light-emitting cavity from the air inlet along the ventilation structure and then flows out from the air outlet, air flow is formed in the light-emitting cavity to take away heat, the temperature in the light-emitting cavity and the temperature in the display screen are reduced, and the service life of the display screen is prolonged. The service life of the display screen is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of display heat dissipation, and in particular relates to a heat dissipation light box for a display, an image generation unit and a head-up display. Background Art

[0002] The vehicle head-up display is a virtual image that projects information such as vehicle condition, road condition, and navigation in front of the driver's sight through optical methods, so that the driver can understand the vehicle condition and road condition information without taking his eyes off the road. When driving during the day, due to the strong light, in order to enable the driver to see the virtual image in front clearly, the virtual image must maintain a high brightness, especially for the image generation method using thin-film transistors, the virtual image brightness generally reaches 10,000cd / m 2 Above, the backlight brightness must reach 1000000cd / m 2 As a result, the temperature in the inner cavity of the image generating unit is too high, which greatly affects the service life of each electronic component.

[0003] In the prior art, the image generating unit generally dissipates heat from the lamp board through an external heat dissipation device (such as a fan or a heat sink, etc.). The heat dissipation position is located at the bottom of the image generating unit, far away from the display screen. The heat in the cavity part below the display screen is difficult to dissipate in time, affecting the life of the display screen. Utility Model Content

[0004] In view of the above-mentioned defects or shortcomings, the utility model provides a heat dissipation light box, an image generation unit and a head-up display for a display, aiming to solve the technical problem in the prior art that the heat in the cavity part below the display screen is difficult to dissipate in time, thereby affecting the life of the display screen.

[0005] To achieve the above-mentioned purpose, the utility model provides a heat dissipation light box for a display, wherein the heat dissipation light box for a display comprises a box body and a ventilation structure arranged on the box body, the box body is used to install a light-emitting component and a display screen component and a light-emitting cavity is formed between the light-emitting component and the display screen component, and the ventilation structure is formed with air inlets and air outlets connected to the light-emitting cavity at intervals on the outer peripheral side of the box body to form a ventilation channel.

[0006] In an embodiment of the utility model, a first vent and a second vent are respectively provided on two side panels relatively arranged on the box body, and the ventilation structure includes an air inlet shading plate portion and an air outlet shading plate portion. The air inlet shading plate portion is arranged on the box body facing the first vent and forms an air inlet below the first vent. The air outlet shading plate portion is arranged on the box body facing the second vent and forms an air outlet below the second vent.

[0007] In an embodiment of the utility model, an extension plate is provided at the upper end of the front side plate of the box body extending laterally, a first vent is opened on the front side plate, an air inlet shading plate portion circumferentially encloses the first vent on the outer wall of the front side plate, and the upper end of the air inlet shading plate portion is connected to the extension plate, and the lower end is enclosed with the front side plate to form an air inlet.

[0008] In an embodiment of the utility model, a mounting surface is formed at the upper end of the box body, and the mounting surface is used for allowing the display screen assembly to extend out of the rear side panel of the box body. The second vent is formed on the rear side panel of the box body and is located below the mounting surface. The air outlet shading plate portion circumferentially encloses the second vent on the outer wall of the rear side panel, and the lower end of the air outlet shading plate portion encloses the rear side panel to form an air outlet.

[0009] In an embodiment of the utility model, the top of the box body is tilted upward from front to back, the first vent is arranged on the front side panel of the box body and close to the top, and the second vent is arranged on the rear side panel of the box body and located above the first vent.

[0010] In an embodiment of the utility model, the number of the first vents and the second vents are both at least two, at least two first vents are spaced apart in sequence along the length direction of the front side plate of the box body, and at least two second vents are spaced apart in sequence along the length direction of the rear side plate of the box body.

[0011] In the embodiment of the utility model, a light shielding plate portion is provided on the inner peripheral wall of the light emitting cavity and extends out transversely, and the light shielding plate portion is located at the lower side of the first ventilation opening and the second ventilation opening.

[0012] In order to achieve the above purpose, the utility model also provides an image generating unit, wherein the image generating unit includes a light-emitting component, a display screen component and a heat dissipation light box for a display according to the above, the display screen component is installed on the top of the box body, and the light-emitting component is placed in the box body.

[0013] In the embodiment of the utility model, the display screen assembly includes a display screen mounting frame and a display screen body, and the display screen body is mounted on the top of the box body through the buckle of the display screen mounting frame.

[0014] In order to achieve the above object, the utility model also provides a vehicle-mounted head-up display, which includes the image generating unit according to the above.

[0015] Through the above technical solution, the heat dissipation light box for display provided by the embodiment of the utility model has the following beneficial effects:

[0016] When the above-mentioned heat dissipation light box for display is used, since it includes a box body and a ventilation structure arranged on the box body, the box body is used to install the light-emitting component and the display screen component and a light-emitting cavity is formed between the light-emitting component and the display screen component, and the ventilation structure is formed with air inlets and air outlets connected to the light-emitting cavity at intervals on the outer peripheral side of the box body to form a ventilation channel, then air flows into the light-emitting cavity from the air inlet along the ventilation structure and then flows out from the air outlet, forming air flow in the light-emitting cavity to take away heat, thereby reducing the temperature in the light-emitting cavity and the display screen, thereby achieving the purpose of prolonging the service life of the display screen.

[0017] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide an understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0019] Figure 1 It is a schematic structural diagram of a heat dissipation light box for a display according to an embodiment of the utility model;

[0020] Figure 2 It is a three-dimensional diagram of a heat dissipation light box for a display according to an embodiment of the utility model;

[0021] Figure 3 It is a bottom view of a heat dissipation light box for a display according to an embodiment of the utility model.

[0022] Description of Reference Numerals

[0023] 1 Box body 11 Light emitting cavity

[0024] 12 front side plate 121 limit part

[0025] 13 extension plate 14 rear side plate

[0026] 141 buckle portion 15 first vent

[0027] 16 Second ventilation opening 17 Mounting surface

[0028] 18 Light shielding plate 19 Mounting plate

[0029] 21 Air inlet 22 Air outlet

[0030] 23 Air inlet shading plate 24 Air outlet shading plate

[0031] 3 Lighting components 31 Light board

[0032] 32 First lens 33 Second lens

[0033] 4 Display assembly 41 Display mounting bracket

[0034] 42 Display body 5 Thermal pad

[0035] 6. Heat sink DETAILED DESCRIPTION

[0036] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0037] The heat dissipation light box for display, the image generation unit and the vehicle-mounted head-up display of the present invention are described below with reference to the accompanying drawings.

[0038] like Figure 1 and Figure 2 As shown, the utility model provides a heat dissipation light box for a display, wherein the heat dissipation light box for a display comprises:

[0039] The box body 1 is used to install the light emitting assembly 3 and the display screen assembly 4 and a light emitting cavity 11 is formed between the light emitting assembly 3 and the display screen assembly 4;

[0040] The ventilation structure is provided with an air inlet 21 and an air outlet 22 which are connected to the light-emitting cavity 11 at intervals on the outer peripheral side of the box body 1 to form a ventilation channel.

[0041] When the above-mentioned heat dissipation light box for display is used, since it includes a box body 1 and a ventilation structure arranged on the box body 1, the box body 1 is used to install the light-emitting component 3 and the display screen component 4 and a light-emitting cavity 11 is formed between the light-emitting component 3 and the display screen component 4, and the ventilation structure is formed with an air inlet 21 and an air outlet 22 connected to the light-emitting cavity 11 on the outer peripheral side of the box body 1 to form a ventilation channel. Air flows from the air inlet 21 into the light-emitting cavity 11 along the ventilation structure and then flows out from the air outlet 22, forming air flow in the light-emitting cavity 11 to take away heat, thereby reducing the temperature in the light-emitting cavity 11 and the display screen, thereby achieving the purpose of prolonging the service life of the display screen.

[0042] like Figures 1 to 3As shown, in an embodiment of the utility model, the two side panels relatively arranged on the box body 1 are respectively provided with a first vent 15 and a second vent 16 corresponding to each other, and the ventilation structure includes an air inlet shading plate portion 23 and an air outlet shading plate portion 24. The air inlet shading plate portion 23 is arranged on the box body 1 facing the first vent 15 and forms an air inlet 21 below the first vent 15. The air outlet shading plate portion 24 is arranged on the box body 1 facing the second vent 16 and forms an air outlet 22 below the second vent 16. The function of the air inlet shading plate portion 23 and the air outlet shading plate portion 24 is to prevent the light in the light-emitting cavity 11 from leaking out and affecting the imaging effect of the image generating unit; in addition, the air inlet shading plate portion 23 and the air outlet shading plate portion 24 cooperate with the outer wall of the box body 1 to form a complete ventilation channel, the air inlet 21 is formed below the first ventilation port 15, the air inlet shading plate portion 23 covers and extends downward beyond the first ventilation port 15, the air outlet 22 is formed below the second ventilation port 16, the air outlet shading plate portion 24 covers and extends downward beyond the second ventilation port 16, then the air inlet section and the air outlet section of the ventilation channel are formed with a bent structure, making it difficult for light to overflow from the air inlet 21 or the air outlet 22.

[0043] like Figure 2 As shown, in the embodiment of the utility model, the upper end of the front side plate 12 of the box body 1 is laterally extended to be provided with an extension plate 13, the first vent 15 is opened on the front side plate 12, that is, the first vent 15 is located below the extension plate 13, the air inlet shading plate portion 23 circumferentially encloses the first vent 15 on the outer wall of the front side plate 12, and the upper end of the air inlet shading plate portion 23 is connected to the extension plate 13, and the lower end is enclosed with the front side plate 12 to form the air inlet 21. Then the upper end of the air inlet shading plate portion 23 is sealed by connecting with the extension plate 13 to prevent light from irradiating on the front windshield of the car and affecting the imaging effect of the image generation unit.

[0044] like Figure 2 As shown in the embodiment of the utility model, the upper end of the box body 1 is formed with a mounting surface 17, and the mounting surface 17 is used for the display screen assembly 4 to extend out of the rear side plate 14 of the box body 1, and the second vent 16 is formed on the rear side plate 14 of the box body 1 and is located below the mounting surface 17. The air outlet visor portion 24 circumferentially encloses the second vent 16 on the outer wall of the rear side plate 14, and the lower end of the air outlet visor portion 24 and the rear side plate 14 enclose the air outlet 22. The mounting surface 17 extends out of the rear side plate 14 of the box body 1. On the one hand, the mounting area of ​​the display screen assembly 4 is increased, so that the virtual image generated by the display screen assembly 4 is larger. On the other hand, when the display screen assembly 4 is installed in the box body 1, the opening of the upper end of the air outlet visor portion 24 is covered by the display screen assembly 4, and there is no need to seal the upper end of the air outlet visor portion 24 separately, which can also prevent light from irradiating on the front windshield of the car and affecting the imaging effect of the image generation unit.

[0045] like Figure 1 and Figure 2 As shown, in the embodiment of the utility model, the top of the box body 1 is tilted upward from front to back, the first vent 15 is arranged on the front side plate 12 of the box body 1 and is arranged close to the top, and the second vent 16 is arranged on the rear side plate 14 of the box body 1 and is located on the upper side of the first vent 15. The heat dissipation light box for display provided by the utility model is particularly suitable for vehicle-mounted head-up display, the top of the box body 1 is tilted upward from front to back, and the display screen assembly 4 is also installed on the box body 1 at an angle, so as to correspond to the tilted front windshield plate of the car, so as to improve the imaging effect of the virtual image; the first vent 15 and the second vent 16 are arranged one by one at the upper ends of the front side plate 12 and the rear side plate 14, so as to be close to the display screen assembly 4, so that the heat under the display screen assembly 4 can be dissipated as soon as possible.

[0046] Specifically, the left and right side panels of the box body 1 are both provided with mounting plates 19 extending outwards, and the mounting plates 19 are formed with fixing holes for fixing the box body 1 with fasteners.

[0047] In an embodiment of the utility model, the number of the first vents 15 and the second vents 16 are both at least two, at least two first vents 15 are arranged in sequence and spaced apart along the length direction of the front side plate 12 of the box body 1, and at least two second vents 16 are arranged in sequence and spaced apart along the length direction of the rear side plate 14 of the box body 1. The heat dissipation effect of the ventilation structure is improved by increasing the number of the first vents 15 and the second vents 16.

[0048] In the embodiment of the utility model, a light-blocking plate portion 18 is laterally extended from the inner peripheral wall of the light-emitting cavity 11, and the light-blocking plate portion 18 is located at the lower side of the first vent 15 and the second vent 16 to further reduce the light overflowing from the first vent 15 and the second vent 16.

[0049] like Figure 1 As shown, in order to achieve the above objectives, the utility model further provides an image generation unit, wherein the image generation unit comprises a light emitting component 3, a display screen component 4 and the heat dissipation light box for display as described above, the display screen component 4 is mounted on the top of the box body 1, and the light emitting component 3 is placed in the box body 1. Since the image generation unit adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0050] Specifically, the light-emitting component 3 includes a lamp board 31, a first lens 32 and a second lens 33 arranged in sequence from bottom to top, and the image generating unit also includes a thermally conductive gasket 5 and a heat sink 6. The two sides of the thermally conductive gasket 5 are respectively attached to the lamp board 31 and the heat sink 6 to expand the heat dissipation area. Part of the heat generated by the lamp board 31 is transferred to the heat sink 6 by the thermally conductive gasket 5 for dissipation.

[0051] In the embodiment of the utility model, the display screen assembly 4 includes a display screen mounting frame 41 and a display screen body 42, and the display screen body 42 is mounted on the top of the box body 1 by snapping the display screen mounting frame 41. The snap-on mounting method facilitates the rapid disassembly and assembly of the display screen assembly 4, the replacement of a damaged display screen, and the cleaning of the light-emitting cavity 11.

[0052] Specifically, the upper ends of the left and right side panels of the box body extend backwards to the rear side panel 14, and two buckle portions 141 spaced from the rear side panel 14 are formed opposite to each other. The front side panel 12 is formed with two stopper portions 121 protruding toward the rear side panel 14, and the display screen body 42 is formed with a stopper opening corresponding to the stopper portions 121 to achieve quick matching installation. Further, two buckle portions 141 are also spaced apart on the left side panel of the box body, and two stopper portions 121 protruding toward the left side panel are formed on the right side panel of the box body.

[0053] In order to achieve the above objectives, the utility model also provides a vehicle-mounted head-up display, wherein the vehicle-mounted head-up display includes the above-mentioned image generation unit. Since the vehicle-mounted head-up display adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0054] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0055] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0057] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A heat dissipation light box for a display, characterized in that: The heat dissipation light box for display comprises: A box body (1) is used to install a light-emitting assembly (3) and a display screen assembly (4) and a light-emitting cavity (11) is formed between the light-emitting assembly (3) and the display screen assembly (4); A ventilation structure is provided, wherein an air inlet (21) and an air outlet (22) are formed at intervals on the outer peripheral side of the box body (1) and are connected to the light-emitting cavity (11), so as to form a ventilation channel.

2. The heat dissipation light box for display according to claim 1, characterized in that: The box body (1) has two side panels arranged opposite to each other, each correspondingly provided with a first vent (15) and a second vent (16), the ventilation structure comprising an air inlet shading plate portion (23) and an air outlet shading plate portion (24), the air inlet shading plate portion (23) being arranged on the box body (1) facing the first vent (15) and forming the air inlet (21) below the first vent (15), the air outlet shading plate portion (24) being arranged on the box body (1) facing the second vent (16) and forming the air outlet (22) below the second vent (16).

3. The heat dissipation light box for display according to claim 2, characterized in that: An extension plate (13) is provided at the upper end of the front side plate (12) of the box body (1), and the first ventilation opening (15) is opened on the front side plate (12). The air inlet shading plate portion (23) circumferentially surrounds the first ventilation opening (15) on the outer wall of the front side plate (12), and the upper end of the air inlet shading plate portion (23) is connected to the extension plate (13), and the lower end surrounds the front side plate (12) to form the air inlet (21).

4. The heat dissipation light box for display according to claim 2, characterized in that: The upper end of the box body (1) is formed with a mounting surface (17), and the mounting surface (17) is used for the display screen assembly (4) to extend out of the rear side plate (14) of the box body (1), and the second vent (16) is formed on the rear side plate (14) of the box body (1) and is located below the mounting surface (17), and the air outlet shading plate portion (24) circumferentially encloses the second vent (16) on the outer wall of the rear side plate (14), and the lower end of the air outlet shading plate portion (24) and the rear side plate (14) enclose the air outlet (22).

5. The heat dissipation light box for display according to claim 2, characterized in that: The top of the box body (1) is tilted upward from front to back, the first vent (15) is arranged on the front side plate (12) of the box body (1) and is arranged close to the top, and the second vent (16) is arranged on the rear side plate (14) of the box body (1) and is located above the first vent (15).

6. The heat dissipation light box for display according to claim 2, characterized in that: The number of the first ventilation openings (15) and the number of the second ventilation openings (16) are both at least two, at least two of the first ventilation openings (15) are arranged in sequence and at intervals along the length direction of the front side plate (12) of the box body (1), and at least two of the second ventilation openings (16) are arranged in sequence and at intervals along the length direction of the rear side plate (14) of the box body (1).

7. The heat dissipation light box for display according to any one of claims 2 to 6, characterized in that: A light shielding plate portion (18) is provided on the inner peripheral wall of the light emitting cavity (11) and extends out transversely. The light shielding plate portion (18) is located at the lower side of the first ventilation opening (15) and the second ventilation opening (16).

8. An image generation unit, characterized in that: The image generating unit comprises a light emitting component (3), a display screen component (4) and a heat dissipation light box for a display according to any one of claims 1 to 7, wherein the display screen component (4) is mounted on the top of the box body (1), and the light emitting component (3) is placed inside the box body (1).

9. The image generation unit according to claim 8, characterized in that: The display screen assembly (4) comprises a display screen mounting frame (41) and a display screen body (42), and the display screen body (42) is buckled and mounted on the top of the box body (1) through the display screen mounting frame (41).

10. A vehicle-mounted head-up display, characterized in that: The in-vehicle head-up display comprises the image generation unit according to claim 8 or 9.

Images