Heat dissipation device of projector ray machine

Abstract

The utility model discloses a heat dissipation device of a projector ray machine, and relates to the technical field of projector heat dissipation systems, the heat dissipation device of the projector ray machine comprises a ray machine housing, a display screen, an air guide member and an exhaust fan, the top of the ray machine housing is provided with a cover body in a detachable manner, and the cover body is provided with an air inlet. The top of the light machine shell is further provided with an air guide channel communicating the interior and the exterior of the light machine shell, the air guide piece is used for controlling an air path entering the air guide channel, the air guide piece comprises a plurality of inclined air guide spacers, the air guide spacers are arranged at the top of the light machine shell, and an air inlet channel is formed between the cover body and the top of the light machine shell. And finally, the exhaust fan is arranged at the bottom of the ray machine shell to exhaust air in the ray machine shell, and the exhaust fan sucks air, so that the air entering the air inlet channel circulates on the surface of the display screen under the cooperation of the air guide piece, the display screen is uniformly cooled, and the temperature of the whole display screen is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of projector heat dissipation systems, in particular to a heat dissipation device for a projector optical machine. Background Art

[0002] Multimedia projectors integrate multiple forms of expression such as video, image and sound, and therefore play an important role in teaching and commercial demonstration activities. Therefore, the application scope of multimedia projectors is becoming increasingly wide.

[0003] When the various structures in the existing projector run for a long time, the internal temperature of the projector will increase, which will cause the temperature of the display screen to increase. Moreover, if the display screen works under high temperature conditions for a long time, it will eventually cause serious adverse phenomena such as yellowing of the projected image and screen burn-in. The existing solution is to set a heat sink to absorb wind and pass the wind through the display screen to achieve heat dissipation of the display screen. However, the wind path of this design only passes through both sides of the display screen, and cannot dissipate heat in the middle of the display screen or other positions, thereby failing to achieve uniform heat dissipation of the display screen. Utility Model Content

[0004] The utility model aims to provide a heat dissipation device for a projector optical machine to solve the problem that the display screen cannot dissipate heat evenly.

[0005] In order to achieve the above-mentioned object, the utility model provides a heat dissipation device for a projector optical machine, comprising:

[0006] An optical machine housing, wherein a cover is detachably disposed on the top of the optical machine housing, and an air guide passage is also disposed on the top of the optical machine housing to connect the inside of the optical machine housing with the outside;

[0007] An air guide member, used for controlling the wind path entering the air guide channel, the air guide member comprises a plurality of inclined air guide baffles, the air guide baffles are arranged at the top of the optical machine housing, an air inlet channel is formed between the cover body and the top of the optical machine housing, and an abutment block abutting against the top of the air guide baffle is arranged at the bottom of the cover body facing the top of the optical machine housing;

[0008] A display screen, the display screen is vertically arranged inside the optical machine housing, and the top of the display screen is connected to the air guide channel;

[0009] An exhaust fan, which is arranged at the bottom of the optical machine housing to exhaust air inside the optical machine housing;

[0010] The exhaust fan sucks air so that the air entering the air inlet passage flows on the surface of the display screen in cooperation with the air guide member, so as to evenly dissipate heat from the display screen.

[0011] Preferably, the air guide baffles are divided into first air guide baffles and second air guide baffles, and several of the first air guide baffles are arranged on the top of the optical machine housing; several of the second air guide baffles are connected to the top of the optical machine housing at the bottom, and connected to the side of the structure in the air guide channel at the side.

[0012] Preferably, the second air guide baffles are distributed between the first air guide baffles.

[0013] Preferably, the inner wall of the air guiding channel is provided with a connecting block along the length direction of the air guiding channel to divide the air guiding channel into a first air guiding channel and a second air guiding channel.

[0014] Preferably, the top of the display screen is snapped into the inside of the connecting block; the bottom of the display screen abuts against the bottom of the inside of the optical machine housing, and the bottom of the display screen portion is located above the connection point between the exhaust fan and the inside of the optical machine housing.

[0015] Preferably, a first card groove is provided inside the connecting block along the length direction of the connecting block, a guide block partially located inside the optical machine housing is carded inside the first card groove, the top of the display screen is carded inside the guide block, and the left and right sides of the guide block located inside the optical machine housing are inclined surfaces.

[0016] Preferably, a top plate is extended in the vertical direction on the left and right sides of the top of the optical machine housing, a first card slot is recessed in the top of the top plate, a first card block engaged with the first card slot is provided at the bottom of the cover body, and a channel between the bottom of the cover body and the top of the optical machine housing that is connected to the outside of the optical machine housing constitutes the air inlet channel.

[0017] Preferably, a second clamping block is vertically arranged at the bottom end of the optical machine housing around the connection between the exhaust fan and the inside of the optical machine housing, and a second clamping groove is recessed on the surface of the exhaust fan to be clamped with the second clamping block.

[0018] Preferably, the four corners of the exhaust fan are fastened to the bottom end of the optical machine housing by fastening screws.

[0019] Preferably, a front mirror and a rear mirror are disposed inside the optical machine housing and are opposite to the surface and back of the display screen respectively.

[0020] Compared with the prior art, the utility model has the following beneficial effects: the exhaust fan is arranged on the optical machine housing

[0021] The bottom end is connected with the inside of the optical machine casing, and the exhaust fan is connected with the inside of the optical machine casing. At the same time, with the cooperation of the air inlet channel and the air guide channel, the exhaust fan can realize air intake inside the optical machine casing. Secondly, an air guide is arranged on the top of the optical machine casing to control the wind path entering the air guide channel, so that the surface and back of the display screen arranged inside the optical machine casing along the vertical direction will be passed by the cold wind. That is, the exhaust fan sucks air, so that the wind entering the air inlet channel flows on the surface of the display screen with the cooperation of the air guide, so that the heating and cooling of the entire display screen is more uniform, thereby causing the temperature of the entire display screen to drop. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0023] Figure 2 It is a schematic diagram of the structure of the utility model (without cover).

[0024] Figure 3 It is a cross-sectional view of the utility model.

[0025] The reference numerals in the figures are:

[0026] 1. Optical machine housing; 11. Air guide channel; 111. First air guide channel; 112. Second air guide channel; 12. Connecting block; 121. Card slot; 1211. Guide block; 13. First air guide baffle; 14. Second air guide baffle;

[0027] 2. Cover body; 21. Air inlet channel;

[0028] 3. Exhaust fan;

[0029] 4. Display screen;

[0030] 5. Front Philippine mirror;

[0031] 6. Rear mirror. DETAILED DESCRIPTION

[0032] The present application is further described in detail below by specific embodiments in conjunction with the accompanying drawings, wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. However, those skilled in the art can effortlessly recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, methods. In some cases, some operations related to the present application are not shown or described in the specification, and this is to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations according to the description in the specification and the general technical knowledge in the art.

[0033] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0034] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0035] The utility model provides a heat dissipation device for a projector optical machine, please refer to Figures 1 to 3 The heat dissipation device of the projector optical machine includes an optical machine housing 1, a display screen 4, an air guide, an exhaust fan 3 and other components that meet the structural operation, such as a power board, a circuit, etc. The top of the optical machine housing 1 is provided with a cover body 2 in a detachable manner, and the top of the optical machine housing 1 is also provided with an air guide channel 11 that connects the inside of the optical machine housing 1 with the outside, and the air guide is used to control the wind path entering the air guide channel 11, and the air guide includes a plurality of inclined air guide baffles, which are arranged on the top of the optical machine housing 1, and an inlet is formed between the cover body 2 and the top of the optical machine housing 1. The cover body 2 has an air duct 21, and the bottom of the cover body 2 is provided with an abutting block that abuts against the top of the air guide baffle towards the top of the optical machine housing 1. As for the display screen 4, it is arranged inside the optical machine housing 1 along the vertical direction, and the top of the display screen 4 is connected to the air guide duct 11. Finally, the exhaust fan 3 is arranged at the bottom of the optical machine housing 1 to exhaust air from the inside of the optical machine housing 1. The exhaust fan 3 sucks air so that the wind entering the air inlet duct 21 flows on the surface of the display screen 4 with the cooperation of the air guide member, so as to evenly dissipate the heat of the display screen 4, thereby causing the temperature of the entire display screen 4 to drop.

[0036] The above-mentioned structures are described in detail below.

[0037] For details, please refer to Figure 2 and Figure 3 The inner wall of the air guide channel 11 is provided with a connecting block 12 along the length direction of the air guide channel 11, and the connecting block 12 divides the air guide channel 11 into a first air guide channel 111 and a second air guide channel 112. The wind entering from the air inlet channel 21 enters from the first air guide channel 111 and the second air guide channel 112 respectively, and then passes through the surface and back of the display screen 4 to dissipate heat for the display screen 4.

[0038] In this embodiment, a top plate is extended in the vertical direction on the left and right sides of the top of the optical machine housing 1, and a first card slot is recessed at the top of the top plate. A first card block engaged with the first card slot is provided at the bottom of the cover body 2. After the first card block is engaged with the first card slot, a channel between the bottom of the cover body 2 and the top of the optical machine housing 1 that is connected to the outside of the optical machine housing 1 constitutes an air inlet channel 21, and both ends of the air inlet channel 21 are air inlets, and wind enters from the air inlets.

[0039] In other embodiments, the top of the optical machine housing 1 and the cover 2 may be fastened together by screws, and it is sufficient that there is only a passage between the bottom of the cover 2 and the top of the optical machine housing 1 .

[0040] As for the air guide member disposed on the top of the optical machine housing 1, please refer to Figure 2 Furthermore, the air guide member includes a plurality of inclined air guide baffles, and the air guide baffles are divided into a first air guide baffle 13 and a second air guide baffle 14. The plurality of first air guide baffles 13 are arranged on the top of the optical machine housing 1; the plurality of second air guide baffles 14 are connected to the top of the optical machine housing 1 at the bottom, and the side is connected to the side of the structure in the air guide channel 11, that is, the side is connected to the side of the connecting block 12. Specifically, the inclined first air guide baffles 13 and the second air guide baffles 14 are long strips in this embodiment, and the long strips include long strips with folded corners and triangular long strips formed by connecting a plurality of long strips into a triangular shape.

[0041] Please note that, please refer to Figure 2 and Figure 3 The second air guide baffles 14 are distributed between the first air guide baffles 13. This design can well change the wind path, that is, the wind entering the air inlet channel 21 will change its route after being guided by a plurality of first air guide baffles 13 and a plurality of second air guide baffles 14. In particular, after being guided by the second air guide baffles 14, the wind will pass through the side of the connecting block 12 to enter the structure connected below the connecting block 12 to dissipate heat for subsequent structures.

[0042] To ensure that the wind entering the air inlet channel 21 can enter the interior of the optical machine housing 1 through the first air guide channel 111 and the second air guide channel 112, please refer to Figure 2 and Figure 3 Abutment blocks abutting against the air guide baffles are arranged at the bottom of the cover body 2 facing the top of the optical machine housing 1, that is, abutment blocks abutting against the top of the first air guide baffle 13 and the top of the second air guide baffle 14 are arranged at the bottom of the cover body 2 facing the top of the optical machine housing 1. After the abutment blocks abut against the first air guide baffle 13 and the second air guide baffles, the air inlet channel 21 is divided into a plurality of air guide chambers, and the channels in the air guide chambers can guide wind from different positions through the first air guide channel 111 and the second air guide channel 112 and then enter the interior of the optical machine housing 1, thereby achieving that air can enter the interior of the optical machine housing 1 from all parts of the air guide channel 11.

[0043] In this embodiment, please refer to Figure 3 The top of the display screen 4 is snapped into the inside of the connecting block 12; the bottom of the display screen 4 is in contact with the bottom of the inside of the optical machine housing 1, and part of the bottom of the display screen 4 is located above the connection between the exhaust fan 3 and the inside of the optical machine housing 1. Therefore, when the exhaust fan 3 is working, the air suction port is facing the bottom of the display screen 4, so that the wind generated by the exhaust fan 3 enters from the air inlet channel 21, passes through the air guide channel 11, and then to the display screen 4, and then goes out through the exhaust fan 3.

[0044] Furthermore, through the cooperation of the air guide member, the surface and the back of the display screen 4 can respectively receive the wind entering from the first air guide channel 111 and the second air guide channel 112, thereby achieving uniform heat dissipation of various parts of the display screen 4.

[0045] For further description of the position of display screen 4, please refer to Figure 2 and Figure 3 First, a card groove 121 is provided inside the connecting block 12 along the length direction of the connecting block 12, and a guide block 1211 partially located inside the optical machine housing 1 is carded inside the card groove 121, and the top of the display screen 4 is carded inside the guide block 1211, that is, the display screen 4 is firmly fixed in the corresponding position. As for the guide block 1211, the left and right sides of the guide block 1211 located inside the optical machine housing 1 are inclined surfaces. The setting of the inclined surface can guide the wind again. The wind entering the first air guide channel 111 and the second air guide channel 112 from various angles or positions of the air inlet channel 21 moves along the surface and back of the display screen 4 after passing through the inclined surface, so as to achieve uniform heat dissipation of various parts of the display screen 4.

[0046] As for the position of the exhaust fan 3, in the present embodiment, a second clamping block is arranged in the vertical direction around the bottom end of the optical machine housing 1 and the connection between the exhaust fan 3 and the inside of the optical machine housing 1. A second clamping groove which is engaged with the second clamping block is recessed on the surface of the exhaust fan 3. By engaging the second clamping block with the second clamping groove, the exhaust fan 3 and the optical machine housing 1 can be positioned and initially fixed. Then, the four corners of the exhaust fan 3 are fastened to the bottom end of the optical machine housing 1 by fastening screws, thereby ensuring that the exhaust fan 3 can be stably fixed to the bottom of the optical machine housing 1, thereby continuously dissipating heat to the display screen 4 and other structures located inside the optical machine housing 1.

[0047] In this embodiment, a front door mirror and a rear door mirror are provided inside the optical machine housing 1, which are opposite to the surface and back of the display screen 4 respectively, and can protect the display screen 4 to a certain extent. At the same time, it also has the advantages of limiting the field of view of the imaging system and avoiding unnecessary light from entering, thereby improving the imaging quality. In essence, this technology is something that people in this field should know, so it will not be elaborated in detail.

[0048] Regarding the specific operating principle of the heat dissipation device of the projector optical machine, the exhaust fan 3 is turned on and starts to absorb air. The wind enters the air inlet channel 21 from the two air inlets. Under the action of the air guide member and the abutment block, the wind enters the first air guide channel 111 and the second air guide channel 112 from various angles or positions. Then, under the action of the left and right inclined surfaces of the guide block 1211, the wind adheres to the surface and back of the display screen 4 and is sucked in by the exhaust fan 3. In this process, the heat of each part of the display screen 4 is blown out through the exhaust fan 3 to achieve uniform heat dissipation of the display screen 4.

[0049] Although an embodiment of the utility model has been shown and described, this specific embodiment is merely an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A heat dissipation device for a projector optical machine, characterized in that: include: An optical machine housing (1), wherein a cover body (2) is detachably arranged on the top of the optical machine housing (1), and an air guide channel (11) is also arranged on the top of the optical machine housing (1) for connecting the inside of the optical machine housing (1) with the outside; An air guide member, used for controlling the air path entering the air guide channel (11), the air guide member comprising a plurality of inclined air guide baffles, the air guide baffles being arranged at the top of the optical machine housing (1), an air inlet channel (21) being formed between the cover body (2) and the top of the optical machine housing (1), and an abutment block abutting against the top of the air guide baffles being arranged at the bottom of the cover body (2) facing the top of the optical machine housing (1); A display screen (4), the display screen (4) being arranged inside the optical machine housing (1) in a vertical direction, and the top of the display screen (4) being connected to the air guide channel (11); An exhaust fan (3), the exhaust fan (3) being arranged at the bottom of the optical machine housing (1) to exhaust air from inside the optical machine housing (1); The exhaust fan (3) sucks air so that the air entering the air inlet channel (21) flows on the surface of the display screen (4) in cooperation with the air guide member, thereby evenly dissipating heat from the display screen (4).

2. The heat dissipation device of a projector optical machine according to claim 1, characterized in that: The air guide baffles are divided into first air guide baffles (13) and second air guide baffles (14), and a plurality of the first air guide baffles (13) are arranged on the top of the optical machine housing (1); a plurality of the second air guide baffles (14) have bottoms connected to the top of the optical machine housing (1) and sides connected to the side of the structure in the air guide channel (11).

3. The heat dissipation device of a projector optical machine according to claim 2, characterized in that: The second air guide baffles (14) are distributed between the first air guide baffles (13).

4. The heat dissipation device of a projector optical machine according to claim 3, characterized in that: The inner wall of the air guiding channel (11) is provided with a connecting block (12) along the length direction of the air guiding channel (11) so as to divide the air guiding channel (11) into a first air guiding channel (111) and a second air guiding channel (112).

5. The heat dissipation device of a projector optical machine according to claim 4, characterized in that: The top of the display screen (4) is snap-fitted into the interior of the connection block (12); the bottom of the display screen (4) abuts against the bottom of the interior of the optical machine housing (1), and a portion of the bottom of the display screen (4) is located above the connection point between the exhaust fan (3) and the interior of the optical machine housing (1).

6. The heat dissipation device of a projector optical machine according to claim 5, characterized in that: A first card slot (121) is provided inside the connection block (12) along the length direction of the connection block (12); a guide block (1211) partially located inside the optical machine housing (1) is card-engaged inside the first card slot (121); the top of the display screen (4) is card-engaged inside the guide block (1211); and the left and right sides of the guide block (1211) located inside the optical machine housing (1) are inclined surfaces.

7. The heat dissipation device of a projector optical machine according to claim 2, characterized in that: A top plate is provided on both left and right sides of the top of the optical machine housing (1) extending in the vertical direction, a first card slot is formed in the top of the top plate, a first card block is provided at the bottom of the cover body (2) and is engaged with the first card slot, and a channel between the bottom of the cover body (2) and the top of the optical machine housing (1) and communicating with the outside of the optical machine housing (1) constitutes the air inlet channel (21).

8. The heat dissipation device of a projector optical machine according to claim 1, characterized in that: A second clamping block is arranged in the vertical direction at the bottom end of the optical machine housing (1) around the connection between the exhaust fan (3) and the interior of the optical machine housing (1), and a second clamping groove is recessed in the surface of the exhaust fan (3) to be clamped with the second clamping block.

9. The heat dissipation device of a projector optical machine according to claim 8, characterized in that: The four corners of the exhaust fan (3) are fastened to the bottom end of the optical machine housing (1) via fastening screws.

10. A heat dissipation device for a projector optical engine according to any one of claims 1 to 9, characterized in that: A front mirror (5) and a rear mirror (6) are arranged inside the optical machine housing (1) and are respectively opposite to the front and back surfaces of the display screen (4).

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