CN218740928U - Dustproof detection module and projector heat radiation structure - Google Patents

Abstract

The application relates to the field of dustproof detection, and provides a dustproof detection module which comprises a shell, wherein a detection air channel is formed in the shell, an air inlet and an air outlet are formed in the shell, the air inlet is opposite to a dustproof filter screen to be detected, and the air inlet and the air outlet are communicated with the detection air channel; the first fan body is arranged in the detection air channel and can drive external air to pass through the dustproof filter screen and sequentially pass through the shell from the air inlet, the detection channel and the air outlet; the heating element is arranged in the detection air duct; the circuit board, heating element with circuit board turn-on connection, the circuit board is used for receiving and judging heating element's real-time temperature information can remind the user in time to change the inside dustproof filter screen of projecting apparatus, avoids causing the inside high temperature of projecting apparatus, causes the damage to the electrical components of projecting apparatus inside. A projector heat dissipation mechanism is also provided.

Description

Dustproof module and projecting apparatus heat radiation structure that detect

Technical Field

This application belongs to dustproof detection area, and more specifically says so relates to a dustproof module and projecting apparatus heat radiation structure that detects.

Background

The projecting apparatus is a large screen electronic product that can show multiple video source, mainstream LCD projection technique on present market, all need reduce optical part article temperature through design wind channel module, the admitting air of wind channel module, need be through the impurity among the dustproof filter screen filtered air, dustproof filter screen is after long-time the use, will have a large amount of dusts and other floaters to attach to on the dustproof filter screen, the air input that causes the air intake reduces, thereby can lead to the inside radiating efficiency decline of projecting apparatus, influence the life of projecting apparatus, need regularly to change dustproof filter screen or regularly clear away the dust on the dustproof filter screen. And dustproof filter screen setting is inside the projecting apparatus, and the user is difficult to observe the condition of the dust of accumulation on the dustproof filter screen of inside for dustproof filter screen is after long-time the use, causes the gas flow volume to reduce because the dust is too much, and causes the inside high temperature of projecting apparatus, causes the damage to the electrical components of projecting apparatus inside.

SUMMERY OF THE UTILITY MODEL

The purpose of this application embodiment is providing a dust removal detection module to solve the dust removal detection module among the prior art and have the dustproof filter screen that can not in time change the inside of projecting apparatus, cause the inside high temperature of projecting apparatus, cause the technical problem of damage to the electrical components of projecting apparatus inside.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: provide a dust removal and detect module, include: the dustproof filter screen detection device comprises a shell, a detection air channel is formed in the shell, an air inlet and an air outlet are formed in the shell, the air inlet and the air outlet are both communicated with the detection air channel, and the air inlet is arranged opposite to a dustproof filter screen to be detected; the first fan body is arranged in the detection air channel and used for driving external air to sequentially flow through the dustproof filter screen, the air inlet, the detection air channel and the air outlet; the heating element is arranged in the detection air channel, can generate heat with constant power and detects the temperature of the heating element; the circuit board, heating element with the circuit board conducting connection, the circuit board is used for receiving and judging heating element's real-time temperature information.

The application provides a dust removal detection module's beneficial effect lies in: compared with the prior art, the dust removal detection module is provided with the first fan body and the heating element through the detection air channel in the shell, and the heating element is in conduction connection with the circuit board, in the detection process, the first fan body rotates at a constant rotating speed in the detection air channel, the heating element also generates heat at a constant power, along with the continuous increase of dust on the dustproof filter screen, the gas circulation in the filter screen is reduced, the gas entering the detection air channel from the air inlet is also reduced, so that the heat dissipation efficiency of the heating element is reduced, the temperature is increased, when the temperature of the heating element received by the circuit board reaches or exceeds a rated temperature, a user is reminded to replace the dustproof filter screen, the phenomenon that the dustproof filter screen has overhigh internal temperature of the projector due to excessive dust is avoided, and the electric appliance elements in the projector are damaged; simultaneously, owing to be equipped with the shell in the dust removal detection module and can be with the first fan body of constant rotational speed pivoted, the gas in the inside wind channel of projecting apparatus can not enter into and detect the wind channel to avoid detecting the module with removing dust and need changing the different projecting apparatus of different rated temperature adaptation.

In one embodiment, a sealing member is disposed on a side of the housing close to the air inlet, and the sealing member is disposed around the air inlet and between the air inlet and the dust screen.

In one embodiment, a limit block is arranged in the detection air duct, and the side surface of the first fan body is abutted against the side surface of the limit block facing the air outlet.

In one embodiment, a first mounting hole is formed in the limiting block, the dustproof detection module further comprises a fastening piece, and one end of the fastening piece penetrates through the first fan body to be connected with the first mounting hole.

In one embodiment, the housing has a sliding groove formed on an inner wall of the detection air duct, and the circuit board is slidably engaged in the sliding groove.

In one embodiment, the outer side surface of the outer shell is provided with a mounting block, and the mounting block is provided with a second mounting hole.

A second technical scheme of the present application provides a projector heat radiation structure, includes: the air inlet and the first exhaust port are communicated with the first accommodating cavity; the second fan body is arranged in the first accommodating cavity; the dustproof filter screen is arranged at the first air inlet; the dustproof detection module is arranged in the first accommodating cavity, the air inlet is opposite to the first air inlet, and one side, close to the air inlet, of the shell is connected with the inner wall surface of the cover body in a sealing mode.

In one embodiment, a first grill is disposed at the first air inlet.

In one embodiment, a second accommodating cavity is further formed in the cover body, a third fan body is arranged in the second accommodating cavity, a second air inlet and a second air outlet are formed in the cover body, the second air inlet and the second air outlet are both communicated with the second accommodating cavity, the second air inlet and the first air inlet are arranged in parallel, and the dustproof filter screen covers the first air inlet and the second air inlet.

In one embodiment, a second grill is provided at the second air inlet.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic perspective view of a dust-proof detection module according to an embodiment of the present disclosure;

FIG. 2 is an exploded view of the dust-proof detection module shown in FIG. 1;

fig. 3 is a perspective view of a heat dissipation mechanism of a projector according to an embodiment of the present application;

FIG. 4 is a cross-sectional view of the heat dissipation mechanism of the projector shown in FIG. 3;

fig. 5 is an exploded view of the heat dissipation mechanism of the projector shown in fig. 3.

Wherein, in the figures, the respective reference numerals:

10. a housing; 11. an air inlet; 12. an air outlet; 13. a seal member; 14. a limiting block; 141. a first mounting hole; 142. a chute; 15. mounting a block; 151. a second mounting hole;

20. a first fan body;

30. a heating element;

40. a circuit board;

50. a cover body; 51. a first air inlet; 511. a first grid; 52. a first exhaust port; 53. a second accommodating cavity; 54. a second air inlet; 541. a second grid; 55. a second exhaust port;

60. a second fan body;

70. a dustproof filter screen;

80. a third fan body.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments.

Referring to fig. 1 and fig. 2 together, a description will now be given of a dust-proof detection module according to an embodiment of the present application. Dustproof detection module includes: a case 10, a first fan body 20, a heat generating element 30, and a circuit board 40.

A detection air channel is formed in the shell 10, an air inlet 11 and an air outlet 12 are formed in the shell 10, the air inlet 11 and the air outlet 12 are communicated with the detection air channel, and the air inlet 11 is opposite to the dustproof filter screen 70 to be detected. The first fan body 20 is disposed in the detection air duct, and the first fan body 20 is configured to drive the external air to flow through the dustproof filter screen 70, the air inlet 11, the detection air duct, and the air outlet 12 in sequence. The heating element 30 is disposed in the detection air duct, and the heating element 30 can generate heat with constant power and can detect the temperature thereof in real time. The heating element 30 is electrically connected to the circuit board 40, and the circuit board 40 is used for receiving and determining real-time temperature information of the heating element 30.

For example, as shown in fig. 1 and fig. 2, a detection air duct for detecting the dustproof filter screen 70 to be detected is formed inside the housing 10, the housing 10 is provided with an air inlet 11 and an air outlet 12, the air inlet 11 is disposed opposite to the dustproof filter screen 70 to be detected, the first fan body 20 is disposed in the detection air duct, and the first fan body 20 can drive external air to pass through the dustproof filter screen 70 and sequentially pass through the housing 10 from the air inlet 11, the detection air duct, and the air outlet 12. It can be understood that, the gas entering the detection air duct from the air inlet 11 needs to pass through the dustproof filter screen 70 first, the heating element 30 is arranged in the detection air duct, the gas flowing in the detection air duct can dissipate heat of the heating element 30, the heating element 30 can generate heat with constant power and can detect the temperature value of itself in real time, the heating element 30 comprises a heater and a temperature detector, the heater is connected with the temperature detector, the heater can generate heat with constant power, the temperature detector can detect the temperature of the heater in real time, meanwhile, the heating element 30 is in conduction connection with the circuit board 40, the heating element 30 can transmit the temperature information of itself to the circuit board 40, and the circuit board 40 can judge the blocking condition of the dustproof filter screen 70 according to the temperature change of the heating element 30.

Compared with the prior art, the dustproof detection module provided by the application is characterized in that a first fan body 20 and a heating element 30 are arranged in a detection air channel in a shell 10, the heating element 30 is in conduction connection with a circuit board 40, in the detection process, the first fan body 20 rotates in the detection air channel at a constant rotating speed, the heating element 30 also generates heat at a constant power, along with the continuous increase of dust on a dustproof filter screen 70, the gas circulation in the dustproof filter screen 70 is reduced, and the gas entering the detection air channel from an air inlet 11 is also reduced, so that the heat dissipation efficiency of the heating element 30 is reduced, the temperature is increased, when the circuit board 40 receives the temperature of the heating element 30 and reaches or exceeds the rated temperature, a user is reminded to replace the dustproof filter screen 70, and the situation that the temperature inside a projector is too high due to too much dust on the dustproof filter screen 70 and the electric appliance elements inside the projector are damaged is avoided; simultaneously, owing to be equipped with shell 10 and can be with the first fan body 20 of constant rotational speed pivoted in the dust removal detection module, the gas in the inside wind channel of projecting apparatus can not enter into and detect the wind channel to avoid detecting the module with removing dust and need change different rated temperature and come the different projecting apparatus of adaptation.

In one embodiment of the present application, referring to fig. 1 and fig. 2, a sealing member 13 is disposed on a side of the housing 10 near the air inlet 11, and the sealing member 13 is disposed around the air inlet 11 and between the air inlet 11 and the dust screen 70.

Specifically, when using dustproof detection module, earlier install the inboard at dustproof filter screen 70 with dustproof detection module, and be close to one side of air intake 11 and dustproof filter screen 70's inboard sealing connection with shell 10, through be equipped with sealing member 13 between shell 10 and dustproof filter screen 70 are inboard, can promote the leakproofness between shell 10 and the dustproof filter screen 70, thereby avoid during outside gas enters into the detection wind channel from the clearance between shell 10 and the dustproof filter screen 70 medial surface, improve the accuracy that dustproof detection module detected the filter screen laying dust condition.

In an embodiment of the present application, please refer to fig. 1 and fig. 2, an air inlet surface capable of absorbing air and an air outlet surface capable of discharging air are disposed in the first fan body 20, the air inlet surface is disposed opposite to the air inlet 11, and the air outlet surface is disposed opposite to the air outlet 12.

Specifically, the air intake 11 and the air outlet 12 of shell 10 are just to setting up, and simultaneously, detect the wind channel and extend the setting along the rectilinear direction, through just to setting up air inlet face and air intake 11 to just to setting up air outlet face and air outlet 12, make the air current remain the same flow direction throughout and pass dustproof detection module, promote the smooth and easy nature that gaseous flows in detecting the wind channel.

In an embodiment of the present application, please refer to fig. 1 and fig. 2 together, a limiting block 14 for assisting the first fan body 20 in limiting and mounting is disposed in the detection air duct, and a side surface of the first fan body 20 abuts against a side surface of the limiting block 14 facing the air outlet 12.

Specifically, the first fan body 20 abuts against one side of the limiting block 14 close to the air outlet 12, so as to prevent the first fan body 20 from moving towards the air inlet 11.

In an embodiment of the present application, please refer to fig. 1 and fig. 2, the limiting block 14 is provided with a first mounting hole 141, the dust-proof detection module further includes a fastening member, and one end of the fastening member passes through the first fan body 20 and is connected to the first mounting hole 141.

Specifically, the first mounting hole 141 is formed in the stopper 14, and when the first fan body 20 is mounted, the first fan body 20 can be mounted on the stopper 14 by screwing the fastener with the first mounting hole 141.

In an embodiment of the present application, referring to fig. 1 and fig. 2, a sliding groove 142 is formed on an inner wall of the detection air duct of the housing 10, and the circuit board 40 is slidably clamped in the sliding groove 142.

Specifically, the sliding groove 142 is formed between the limiting block 14 and the bottom surface of the detection air duct, the extending direction of the sliding groove 142 is the same as the extending direction of the detection air duct, when the circuit board 40 is installed, the circuit board 40 is directly slid and clamped into the sliding groove 142 from the air inlet 11 or the air outlet 12, and the circuit board 40 can be conveniently installed in the detection air duct by arranging the sliding groove 142 in the housing 10.

In an embodiment of the present application, referring to fig. 1 and fig. 2, a mounting block 15 is disposed on an outer side surface of the housing 10, and a second mounting hole 151 is disposed on the mounting block 15.

Specifically, the quantity of installation piece 15 is 4, and 4 protruding lateral surfaces of locating the shell 10 body of installation piece 15 are equipped with installation piece 15 through the lateral surface at the shell 10 body to be equipped with second mounting hole 151 on installation piece 15, when needs install dustproof detection module in the projecting apparatus heat dissipation mechanism that awaits measuring, directly adopt fastener cooperation second mounting hole 151 installation to fix in the projecting apparatus heat dissipation mechanism that awaits measuring.

Referring to fig. 3 to 5, the present application further provides a heat dissipation mechanism of a projector, where the heat dissipation mechanism of the projector includes: the cover body 50, the second fan body 60, the dustproof filter screen 70 and the dustproof detection module in any one of the above embodiments.

A first accommodating cavity is formed in the cover body 50, a first air inlet 51 and a first exhaust port 52 are formed in the cover body 50, and the first air inlet 51 and the first exhaust port 52 are communicated with the first accommodating cavity; the second fan body 60 is disposed in the first accommodation chamber; the dust-proof screen 70 is provided at the first air inlet 51; the dustproof detection module is arranged in the first accommodating cavity, the air inlet 11 is opposite to the first air inlet 51, and one side of the shell 10, which is close to the air inlet 11, is in sealing connection with the inner wall surface of the cover body 50.

For example, as shown in fig. 3 to 5, a first receiving cavity for placing other components is formed in the cover 50, the cover 50 is provided with a first air inlet 51 and a second air inlet 54 which are communicated with the first receiving cavity, the second fan body 60 is installed in the first receiving cavity, the dustproof filter screen 70 is installed at the first air inlet 51, the air entering the first receiving cavity from the first air inlet 51 needs to be filtered by the dustproof filter screen 70, the dustproof detection module is arranged in the first receiving cavity, wherein the air inlet 11 and the first air inlet 51 are arranged opposite to each other, and one side of the housing 10 close to the air inlet 11 is connected with the inner wall surface of the cover 50 in a sealing manner.

Further, in the present embodiment, there are two first air inlets 51, wherein the air supplied from one first air inlet 51 directly enters the second fan body 60, and the air entering from the second air inlet 51 cannot enter the detection air duct, and the air supplied from the other first air inlet 51 firstly passes through the detection air duct and then enters the second fan body 60.

The projector heat dissipation mechanism provided by the application adopts the dustproof detection module in the embodiment, so that all the beneficial effects of the dustproof detection module in the embodiment are at least achieved, and the projector heat dissipation mechanism is not repeated one by one. Meanwhile, the dustproof detection module is installed on the projector heat dissipation mechanism, the dustproof filter screen 70 can be detected in real time, the heat dissipation effect of the whole heat dissipation mechanism is prevented from being reduced due to dust blockage, and therefore the projector is prevented from being damaged by high temperature.

In another embodiment of the present application, referring to fig. 5, a first grill 511 is provided at the first air inlet 51.

Specifically, the first grid 511 divides a large first air inlet 51 into a plurality of small first air inlets 51, and the first grid 511 is disposed at the first air inlet 51, so that the dust-proof filter screen 70 can be prevented from being sucked into the first accommodating cavity due to the airflow effect after the second fan body 60 is started.

In another embodiment of the present application, referring to fig. 4 and 5, a second accommodating cavity 53 is further formed in the cover 50, a third fan body 80 is disposed in the second accommodating cavity 53, a second air inlet 54 and a second air outlet 55 are disposed on the cover 50, the second air inlet 54 and the second air outlet 55 are both communicated with the second accommodating cavity 53, the second air inlet 54 and the first air inlet 51 are disposed in parallel, and the dustproof filter screen 70 is disposed at the first air inlet 51 and the second air inlet 54, respectively.

Specifically, the main functions of the second accommodating cavity 53 and the third fan body 80 are the same as those of the first accommodating cavity and the second fan body 60, the second air inlet 54 and the first air inlet 51 are arranged on one side of the dustproof filter screen 70 close to the cover body 50, the dustproof filter screen 70 covers the first air inlet 51 and the second air inlet 54 at the same time, and the second accommodating cavity 53 and the third fan body 80 are arranged in the cover body 50, so that the heat dissipation efficiency of the heat dissipation mechanism to the projector can be improved. Because the intake of first air inlet 51 and second air inlet 54 is close to the dust accumulation condition of dustproof filter screen 70 in first air inlet 51 and second air inlet 54 position department is close, so only need be equipped with dustproof detection module in one of them of first air inlet 51 and second air inlet 54 can, simultaneously, if want more timely warning user to change dustproof filter screen 70, can all install dustproof detection module in first holding chamber and second holding chamber 53.

In another embodiment of the present application, referring to fig. 5, a second grid 541 for limiting the dust screen 70 is disposed at the second air inlet 54.

Specifically, the second grid 541 divides a large second air inlet 54 into a plurality of small second air inlets 54, and the second grid 541 is disposed at the second air inlet 54, so that the dust-proof filter screen 70 can be prevented from being sucked into the second accommodating cavity 53 due to the air flow after the third fan body 80 is started.

The foregoing is only a preferred embodiment of the present invention, and the technical principles of the present invention have been specifically described, and the description is only for the purpose of explaining the principles of the present invention, and should not be construed as limiting the scope of the present invention in any way. Any modifications, equivalents and improvements made within the spirit and principles of the invention and other embodiments of the invention without the creative effort of those skilled in the art are intended to be included within the protection scope of the invention.

Claims (10)

1. The utility model provides a dustproof module that detects which characterized in that includes:

the dustproof filter screen detection device comprises a shell, a detection air channel is formed in the shell, an air inlet and an air outlet are formed in the shell, the air inlet and the air outlet are both communicated with the detection air channel, and the air inlet is arranged opposite to a dustproof filter screen to be detected;

the first fan body is arranged in the detection air channel and used for driving external air to sequentially flow through the dustproof filter screen, the air inlet, the detection air channel and the air outlet;

the heating element is arranged in the detection air duct, can generate heat with constant power and detects the temperature of the heating element;

the circuit board, heating element with the circuit board conducting connection, the circuit board is used for receiving and judging heating element's real-time temperature information.

2. The dust-proof detection module of claim 1, wherein: the shell is close to one side of air intake is equipped with the sealing member, the sealing member surrounds the air intake sets up, and is disposed the air intake with between the dustproof filter screen.

3. The dust-proof detection module of claim 1, wherein: a limiting block is arranged in the detection air duct, and the side face of the first fan body is abutted against the side face, facing the air outlet, of the limiting block.

4. The dust-proof detection module set according to claim 3, characterized in that: the limiting block is provided with a first mounting hole, the dustproof detection module further comprises a fastener, and one end of the fastener penetrates through the first fan body and is connected with the first mounting hole.

5. The dust-proof detection module set forth in claim 1, wherein: the shell is provided with a sliding groove on the inner wall of the detection air channel, and the circuit board can be clamped in the sliding groove in a sliding mode.

6. The dust-proof detection module set forth in claim 1, wherein: and the outer side surface of the outer shell is provided with an installation block, and the installation block is provided with a second installation hole.

7. A heat dissipation structure for a projector, comprising:

the exhaust hood comprises a hood body, a first accommodating cavity is formed in the hood body, a first air inlet and a first exhaust port are formed in the hood body, and the first air inlet and the first exhaust port are communicated with the first accommodating cavity;

the second fan body is arranged in the first accommodating cavity;

the dustproof filter screen is arranged at the first air inlet;

the dust-proof detection module according to any one of claims 1 to 6, wherein the dust-proof detection module is disposed in the first accommodation chamber, the air inlet is disposed opposite to the first air inlet, and one side of the housing close to the air inlet is hermetically connected to an inner wall surface of the housing.

8. The heat dissipation structure for a projector according to claim 7, wherein: the first air inlet is provided with a first grid.

9. The heat dissipation structure for a projector according to claim 7, wherein: the cover is internal still to be formed with the second holding chamber, be equipped with the third fan body in the second holding chamber, second air inlet and second gas vent have been seted up on the cover body, the second air inlet with the second gas vent all with second holding chamber intercommunication, the second air inlet with first air inlet sets up side by side, dustproof filter screen cover in first air inlet reaches the second air inlet.

10. The heat dissipation structure for a projector as claimed in claim 9, wherein: and a second grid is arranged at the second air inlet.

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