CN219552811U

CN219552811U - Projector with a light source for projecting light

Info

Publication number: CN219552811U
Application number: CN202223550691.1U
Authority: CN
Inventors: 龙常梅
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-08-18
Anticipated expiration: 2032-12-29

Abstract

The utility model relates to the technical field of projectors, and provides a projector, which comprises a shell, wherein a light source, a front phenanthrene mirror, a display screen, a rear phenanthrene mirror and a lens which are coaxially arranged are arranged in the shell, a first air supply mechanism and a first heat dissipation mechanism are also arranged in the shell, the first heat dissipation mechanism comprises a receiving end and a heat dissipation end, and the receiving end of the first heat dissipation mechanism, the rear phenanthrene mirror, the lens and the first air supply mechanism are enclosed to form an inner circulation cavity; the shell is provided with a first air guide hole and a second air guide hole which are communicated with the outside of the shell, the first air guide hole is communicated with the radiating end, a second air supply mechanism is further arranged in the shell, and two opposite ends of the second air supply mechanism are respectively communicated with the first air guide hole and the second air guide hole and are used for radiating heat absorbed by the radiating end to the outside of the shell through the second air guide hole. Therefore, uniform heat dissipation in the shell is realized, and the heat dissipation efficiency of the display screen is improved.

Description

Projector with a light source for projecting light

Technical Field

The utility model relates to a projector, and belongs to the technical field of projectors.

Background

In the long-time continuous working state of the projector, the light source can generate a large amount of heat so as to cause the inside temperature of the projector to be too high, and the high temperature can influence the display effect of the display screen, so that the heat needs to be dissipated in time.

The existing heat radiation structure mostly adopts a heat radiation fan, the heat radiation fan radiates the heat inside the projector, but the heat radiation mode cannot effectively and uniformly radiate the heat inside the projector, and uneven heat radiation can cause the phenomena of black spots, black edges and the like caused by overhigh local temperature of the display screen, so that the display effect of the display screen is seriously affected.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, an object of the present utility model is to provide a projector that can uniformly dissipate heat inside the projector, and that is more uniform in heat dissipation.

According to an embodiment of the present utility model, there is provided a first aspect of: the projector comprises a shell, wherein a light source, a front phenanthrene mirror, a display screen, a rear phenanthrene mirror, a lens, a first air supply mechanism and a first heat dissipation mechanism are coaxially arranged in the shell, the first heat dissipation mechanism comprises a receiving end and a heat dissipation end, and the receiving end of the first heat dissipation mechanism, the rear phenanthrene mirror, the lens and the first air supply mechanism are enclosed to form an inner circulation cavity;

the shell is provided with a first air guide hole and a second air guide hole which are communicated with the outside of the shell, the first air guide hole is communicated with the radiating end, a second air supply mechanism is further arranged in the shell, and two opposite ends of the second air supply mechanism are respectively communicated with the first air guide hole and the second air guide hole and are used for radiating heat absorbed by the radiating end to the outside of the shell through the second air guide hole.

Further, as a more preferable embodiment of the present utility model, the display screen and the front phenanthrene mirror are respectively arranged at intervals and respectively form a first flow channel and a second flow channel, and opposite ends of the first flow channel and the second flow channel are respectively communicated with the receiving ends of the first air supply mechanism and the first heat dissipation mechanism.

Further, as a more preferable embodiment of the present utility model, the first air supply mechanism has an air inlet end and an air outlet end, the air inlet end is communicated with the internal circulation chamber, and the air outlet end is communicated with the first flow passage and the second flow passage, respectively.

Further, as a more preferable embodiment of the present utility model, the first air supply mechanism is provided with a first air deflector and a second air deflector at the air outlet end;

one end of the first air deflector is clamped at one end of the display screen and is used for guiding the air at the air outlet end of the first air supply mechanism to the second flow channel;

the second air deflector is clamped at one end of the front phenanthrene mirror and is used for guiding air at the air outlet end of the first air supply mechanism to the first flow channel.

Further, as a more preferable embodiment of the present utility model, a third air deflector is provided at the other end of the display screen, and one end of the third air deflector is connected to the receiving end of the first heat dissipation mechanism;

the other end of the front phenanthrene mirror is provided with a fourth air deflector, and one end of the fourth air deflector is connected with the receiving end of the first heat dissipation mechanism.

Further, as a more preferable embodiment of the present utility model, the first heat radiation mechanism includes a first heat radiation plate group and a second heat radiation plate group, the first heat radiation plate group being located at the receiving end, the second heat radiation plate group being located at the heat radiation end;

a partition plate is arranged between the first heat dissipation plate group and the second heat dissipation plate group and used for separating the inner circulation cavity from the heat dissipation end.

Further, as a more preferable embodiment of the present utility model, an outer heat dissipation flow passage is formed among the first air guide hole, the second heat dissipation plate group, the second air supply mechanism and the second air guide hole, and the outer heat dissipation flow passage is separated from the inner circulation chamber by the partition plate.

Further, as a more preferable embodiment of the present utility model, a cover plate is further disposed in the housing, and the cover plate is disposed above the inner circulation chamber and is respectively connected to the lens, the first air supply mechanism, the back phenanthrene mirror, and the first heat dissipation mechanism.

Further, as a more preferable embodiment of the present utility model, a second heat dissipation mechanism is further disposed in the housing, and the second heat dissipation mechanism is located at a side of the second air supply mechanism, which is close to the second air guide hole;

and a heat conducting sheet is arranged on the second heat dissipation mechanism, and one end of the heat conducting sheet extends to one side of the light source, which is away from the front phenanthrene mirror.

Further, as a more preferable embodiment of the present utility model, the first air supply mechanism and the second air supply mechanism are both heat radiation fans.

Compared with the prior art, in the technical scheme provided by the utility model, the first air supply mechanism guides and circulates the air flow in the inner circulation cavity, the heat is absorbed by the receiving end when flowing through the receiving end, the heat absorbed by the receiving end is conducted to the heat dissipation end, the external cold air flows through the heat dissipation end through the first air guide hole and is conducted to the outside of the shell from the second air guide hole under the conduction of the second air supply mechanism, so that uniform heat dissipation in the shell is realized, and the influence of high temperature on the display effect of the display screen is avoided.

Drawings

FIG. 1 is a schematic diagram of a projector according to the present utility model;

FIG. 2 is a schematic view of the housing of FIG. 1 in an open configuration;

FIG. 3 is a schematic view of an internal structure of the projector shown in FIG. 2;

FIG. 4 is a schematic view of the structure of FIG. 3 from another perspective with the second heat dissipating structure removed;

FIG. 5 is a schematic diagram of the second heat dissipation structure shown in FIG. 3;

reference numerals:

10. a housing; 110. a light source; 120. a front phenanthrene mirror; 130. a display screen; 1310. a first flow passage; 1320. a second flow passage; 140. a rear phenanthrene mirror; 150. a lens; 160. a first air supply mechanism; 1610. an air inlet end; 1620. an air outlet end; 1630. a first air deflector; 1640. a second air deflector; 1650. a third air deflector; 1660. a fourth air deflector; 170. a first heat dissipation mechanism; 1710. a receiving end; 1720. a heat dissipating end; 1730. a first heat radiation plate group; 1740. a second heat radiation plate group; 1750. a partition plate; 180. a first air guide hole; 190. a second air guide hole;

20. an inner circulation chamber; 210. a cover plate;

30. a second air supply mechanism; 310. an outer heat dissipation flow path;

40. a second heat dissipation mechanism; 410. and a heat conductive sheet.

Detailed Description

In order that those skilled in the art will better understand the technical solutions of the present utility model, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It is noted that when an element is referred to as being "fixed" or "disposed on" another element, it can be directly on the other element or be indirectly disposed 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 is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "are used to refer to the terms" length "," width "," upper "," lower "," front "," rear "," left "," right "," vertical "," and "lower".

The horizontal, top, bottom, inner, outer, etc. references to orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description and to simplify the description, and are not intended to indicate or imply that the apparatus or components referred to must have a particular orientation, be constructed and operate in a particular orientation, and are not to be construed as limiting the 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" or "a number" means two or more, unless specifically defined otherwise.

It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for the purpose of understanding and reading the disclosure, and are not intended to limit the scope of the utility model, which is defined by the claims, but rather by the claims, unless otherwise indicated, and that any structural modifications, proportional changes, or dimensional adjustments, which would otherwise be apparent to those skilled in the art, would be made without departing from the spirit and scope of the utility model.

Referring to fig. 1 to 5, according to an embodiment of the present utility model, a projector is provided, which includes a housing 10, wherein a light source 110, a front mirror 120, a display 130, a rear mirror 140 and a lens 150 are coaxially disposed in the housing 10. The housing 10 is further provided with a first air supply mechanism 160 and a first heat dissipation mechanism 170, the first heat dissipation mechanism 170 includes a receiving end 1710 and a heat dissipation end 1720, and the receiving end 1710 of the first heat dissipation mechanism 170 encloses the rear phenanthrene mirror 140, the lens 150 and the first air supply mechanism 160 to form an inner circulation chamber 20. The heat generated by the display screen 130 is mainly in the periphery of the display screen 130, especially in the installation space between the display screen 130 and the front phenanthrene mirror 120 and the rear phenanthrene mirror 140, and the first air supply mechanism 160 is used for circularly guiding out the heat between the display screen 130 and the front phenanthrene mirror 120 and the rear phenanthrene mirror 140, so as to avoid black spots or black edges formed by the heat concentrated on the display screen 130 for a long time.

Referring to fig. 1 and 2, the housing 10 includes an upper portion and a lower portion, the two portions are assembled to form the housing 10, and a hole site for avoiding the lens 150 is left after the assembly is completed. The casing 10 is provided with a first air guiding hole 180 and a second air guiding hole 190 (refer to fig. 3 and 4) which are communicated with the outside of the casing 10, the first air guiding hole 180 is communicated with a heat dissipation end 1720, the casing 10 is also provided with a second air supply mechanism 30, and two opposite ends of the second air supply mechanism 30 are respectively communicated with the first air guiding hole 180 and the second air guiding hole 190 and are used for dissipating heat absorbed by the heat dissipation end 1720 to the outside of the casing 10 through the second air guiding hole 190. The second air supply mechanism 30 is used for opening a flow channel between the first air guide hole 180 and the second air guide hole 190, so as to dissipate heat received by the heat dissipation end 1720 from the receiving end 1710, avoid a high temperature state in the inner circulation chamber 20, and reduce the temperature of the periphery side of the display screen 130.

Referring to fig. 3 and 4, the display screen 130, the front phenanthrene mirror 120 and the rear phenanthrene mirror 140 are disposed at intervals and respectively form a first flow channel 1310 and a second flow channel 1320, and opposite ends of the first flow channel 1310 and the second flow channel 1320 are respectively communicated with the receiving ends 1710 of the first air supply mechanism 160 and the first heat dissipation mechanism 170. In order to avoid heat concentration at the display screen 130, the front phenanthrene mirror 120 and the rear phenanthrene mirror 140, the first air supply mechanism 160 and the first heat dissipation mechanism 170 are directly communicated with the first flow channel 1310 and the second flow channel 1320, so that the first air supply mechanism 160 is directly communicated with the receiving end 1710, the air blown by the first air supply mechanism 160 can timely dissipate the heat in the first flow channel 1310 and the second flow channel 1320, the heat directly reaches the receiving end 1710 to be absorbed, the heat dissipation efficiency of the first flow channel 1310 and the second flow channel 1320 is higher, and the heat concentration at the periphery of the display screen 130 is avoided.

The first air supply mechanism 160 has an air inlet end 1610 and an air outlet end 1620, the air inlet end 1610 is in communication with the internal circulation chamber 20, and the air outlet end 1620 is in communication with the first flow channel 1310 and the second flow channel 1320, respectively.

The air inlet end 1610 of the first air supply mechanism 160 is communicated with the inner circulation chamber 20, the air outlet end 1620 of the first air supply mechanism 160 is communicated with the first flow channel 1310 and the second flow channel 1320, heat generated during operation of the display screen 130 is concentrated in the first flow channel 1310 and the second flow channel 1320, high temperature in the first flow channel 1310 and the second flow channel 1320 can be transmitted to the receiving end 1710 during operation of the first air supply mechanism 160, the receiving end 1710 can timely absorb and transmit the heat to the heat dissipation end, so that the inner circulation chamber 20 keeps lower temperature, the temperature of the air flowing into the air inlet end 1610 of the first air supply mechanism 160 is lower, the temperature of the air flowing into the first flow channel 1310 and the second flow channel 1320 is guaranteed not to influence the display effect of the display screen 130, and the temperature is far lower than the temperature in the first flow channel 1310 and the second flow channel 1320. The air flow transmitted by the first air supply mechanism 160 can not only carry heat out of the first flow channel 1310 and the second flow channel 1320, but also have the effect of cooling.

The air flow in the internal circulation cavity 20 is circulated through the first air supply mechanism 160, and then the high-temperature air in the first flow channel 1310 and the second flow channel 1320 is brought out by the receiving end 1710, so that the temperature of the peripheral side of the display screen 130 can be conveniently and timely dispersed and cooled, and the display screen 130 is prevented from generating black screens or black spots due to uneven heat dissipation or high temperature.

With continued reference to fig. 3, in one embodiment, the first air supply mechanism 160 is provided with a first air deflector 1630 and a second air deflector 1640 at the air outlet end 1620; one end of the first air deflector 1630 is clamped to one end of the display screen 130, and is used for guiding the air of the air outlet end 1620 of the first air supply mechanism 160 to the second flow channel 1320; the second air deflector 1640 is fastened to one end of the front phenanthrene mirror 120, and is used for guiding the air of the air outlet end 1620 of the first air supply mechanism 160 to the first flow channel 1310.

One end of the first air deflector 1630 is located in the middle of the air outlet end 1620 of the first air supply mechanism 160, and divides the air outlet of the first air supply mechanism 160 into two air flows, one air flow flows to the first flow channel 1310, the other air flow flows to the second flow channel 1320, and the first air deflector 1630 and the second air deflector 1640 are arranged to concentrate the air flow of the air outlet end 1620 of the first air supply mechanism 160 on one hand, so as to avoid air flow dispersion, and the air flow can flow to the receiving end 1710 of the first heat dissipation mechanism 170 through the first flow channel 1310 and the second flow channel 1320 under the guidance of the first air deflector 1630 and the second air deflector 1640, so that the temperature dissipation on the periphery of the display screen 130 is more uniform, and the local high temperature caused by the disordered strings of the heat in the housing 10 is avoided. On the other hand, the high-temperature hot gas in the first flow channel 1310 and the second flow channel 1320 can be respectively and timely dispersed and cooled, so that the dispersion efficiency of the high-temperature hot gas in the first flow channel 1310 and the second flow channel 1320 is improved, the temperature in the first flow channel 1310 and the second flow channel 1320 is reduced, and the display screen 130 is prevented from being in a continuous high-temperature working state.

In one embodiment, the other end of the display screen 130 is provided with a third air deflector 1650, and one end of the third air deflector 1650 is connected to the receiving end 1710 of the first heat dissipation mechanism 170; the other end of the front phenanthrene mirror 120 is provided with a fourth air deflector 1660, and one end of the fourth air deflector 1660 is connected with the receiving end 1710 of the first heat dissipation mechanism 170.

The arrangement of the third air deflector 1650 and the fourth air deflector 1660 can guide the hot air of the first flow channel 1310 and the second flow channel 1320 to the receiving end 1710 of the first heat dissipation mechanism 170, so as to prevent the hot air from being dissipated to other areas of the inner circulation chamber 20, and improve the heat dissipation efficiency.

Referring to fig. 4 and 5, in one embodiment, the first heat dissipation mechanism 170 includes a first heat dissipation plate set 1730 and a second heat dissipation plate set 1740, the first heat dissipation plate set 1730 is located at the receiving end 1710, and the second heat dissipation plate set 1740 is located at the heat dissipation end 1720; a divider 1750 is disposed between the first heat dissipating plate set 1730 and the second heat dissipating plate set 1740, and the divider 1750 is used to separate the inner circulation chamber 20 from the heat dissipating ends 1720.

The first heat dissipation plate group 1730 and the second heat dissipation plate group 1740 may be made of copper-aluminum alloy, aluminum plate, etc. with better heat conduction, and the material is not limited herein. The first heat dissipation plate set 1730 can receive high-temperature gas at one side of the inner circulation chamber 20, so as to transmit temperature to the second heat dissipation plate set 1740, and the second heat dissipation plate set 1740 side is utilized to cool the first heat dissipation plate set 1730 side, so as to reduce the temperature of the inner circulation chamber 20.

An outer heat dissipation runner 310 is formed among the first air guide hole 180, the second heat dissipation plate set 1740, the second air supply mechanism 30 and the second air guide hole 190, and the outer heat dissipation runner 310 and the inner circulation chamber 20 are separated by a separation plate 1750, so that high temperature in the inner circulation chamber 20 is prevented from being dissipated out of other areas in the shell 10, and other parts are prevented from being influenced.

The partition plate 1750 may separate the inner circulation chamber 20 from the outer heat dissipation flow channel 310, so as to prevent the hot air from unevenly diffusing in the housing 10, and influence the display effect of the display screen 130. The outer heat dissipation flow channel 310 is communicated with the outside of the casing 10, and is used for conveying cold air outside the casing 10 to the outer heat dissipation flow channel 310, and the low temperature of the second heat dissipation plate set 1740 in the outer heat dissipation flow channel 310 cools the high temperature of the first heat dissipation plate set 1730, so as to dissipate heat at one side of the inner circulation chamber 20.

In one embodiment, the inner circulation chamber 20 is a relatively closed chamber, a cover plate 210 is further disposed above the inner circulation chamber 20, the cover plate 210 is used for sealing the inner circulation chamber 20, and completely isolating the inner circulation flow channel from the outer heat dissipation flow channel 310, so that on one hand, the inner circulation flow channel is cooled through the outer heat dissipation flow channel 310, and a uniform cooling effect is achieved. On the other hand, external dust can be prevented from entering the internal circulation flow channel, so that the internal circulation flow channel maintains a dust-free environment, and the display screen 130 and the lens 150 are kept in a clean state.

With continued reference to fig. 4 and 5, a second heat dissipation mechanism 40 is further disposed in the housing 10, and the second heat dissipation mechanism 40 is located at a side of the second air supply mechanism 30 close to the second air guiding hole 190. The second heat dissipation mechanism 40 is provided with a heat conducting fin 410, and one end of the heat conducting fin 410 extends to the side of the light source 110 away from the front phenanthrene mirror 120. The second heat dissipation mechanism 40 may be a heat sink, and the heat conductive sheet 410 may be a heat conductive copper sheet or a heat conductive aluminum sheet, for dissipating the high temperature generated by the LED lamp on the back side of the light source 110.

In one embodiment, the first air supply mechanism 160 and the second air supply mechanism 30 are cooling fans, the cooling fans select types that can be directly purchased in the market, the specific structural types are not limited herein, the cooling fans play a role in guiding air, the first air supply mechanism 160 can form air guiding circulation in the inner circulation chamber 20, the guiding efficiency of high temperature at the periphery of the display screen 130 is improved, and the uniformity of air guiding at the periphery of the display screen 130 can be improved. The second air supply mechanism 30 is used for guiding low-temperature air from outside into the outer heat dissipation flow channel 310, and taking out high temperature in the inner circulation chamber 20 and cooling one side of the inner circulation chamber 20 by using the first heat dissipation mechanism 170, and meanwhile, no impurities such as dust are brought into the inner circulation chamber 20, so that the inner circulation chamber 20 is in a sterile and dust-free environment.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A projector, comprising:

a shell (10) is internally provided with a coaxially arranged light source (110), a front phenanthrene mirror (120), a display screen (130), a rear phenanthrene mirror (140) and a lens (150);

the shell (10) is internally provided with a first air supply mechanism (160) and a first heat dissipation mechanism (170), the first heat dissipation mechanism (170) comprises a receiving end (1710) and a heat dissipation end (1720), and the receiving end (1710) of the first heat dissipation mechanism (170) is enclosed with the rear phenanthrene mirror (140), the lens (150) and the first air supply mechanism (160) to form an inner circulation cavity (20);

be equipped with on casing (10) with first wind-guiding hole (180) and second wind-guiding hole (190) of casing (10) external communication, first wind-guiding hole (180) with radiating end (1720) intercommunication, still be equipped with second air supply mechanism (30) in casing (10), the relative both ends of second air supply mechanism (30) communicate respectively first wind-guiding hole (180) with second wind-guiding hole (190), be used for with radiating end (1720) absorptive heat is passed through second wind-guiding hole (190) looses outside casing (10).

2. The projector according to claim 1, wherein the display screen (130) is spaced apart from the front phenanthrene mirror (120) and the rear phenanthrene mirror (140) and forms a first flow channel (1310) and a second flow channel (1320), respectively, and opposite ends of the first flow channel (1310) and the second flow channel (1320) are respectively communicated with the receiving ends (1710) of the first air supply mechanism (160) and the first heat dissipation mechanism (170).

3. The projector according to claim 2, wherein the first air supply mechanism (160) has an air inlet end (1610) and an air outlet end (1620), the air inlet end (1610) being in communication with the inner circulation chamber (20), the air outlet end (1620) being in communication with the first flow channel (1310) and the second flow channel (1320), respectively.

4. A projector according to claim 3, wherein the first air supply mechanism (160) is provided with a first air deflector (1630) and a second air deflector (1640) at the air outlet end (1620);

one end of the first air deflector (1630) is clamped at one end of the display screen (130) and is used for guiding air at the air outlet end (1620) of the first air supply mechanism (160) to the second flow channel (1320);

the second air deflector (1640) is clamped at one end of the front phenanthrene mirror (120) and is used for guiding air at the air outlet end (1620) of the first air supply mechanism (160) to the first runner (1310).

5. The projector according to claim 4, wherein a third air deflector (1650) is provided at the other end of the display screen (130), and one end of the third air deflector (1650) is connected to the receiving end (1710) of the first heat dissipation mechanism (170);

the other end of the front phenanthrene mirror (120) is provided with a fourth air deflector (1660), and one end of the fourth air deflector (1660) is connected with the receiving end (1710) of the first heat dissipation mechanism (170).

6. The projector of claim 1, wherein the first heat dissipation mechanism (170) includes a first heat dissipation plate group (1730) and a second heat dissipation plate group (1740), the first heat dissipation plate group (1730) being located at the receiving end (1710), the second heat dissipation plate group (1740) being located at the heat dissipation end (1720);

a partition plate (1750) is arranged between the first radiating plate group (1730) and the second radiating plate group (1740), and the partition plate (1750) is used for separating the inner circulation cavity (20) from the radiating end (1720).

7. The projector of claim 6 wherein an outer heat dissipation flow path (310) is formed between the first air guide hole (180), the second heat dissipation plate group (1740), the second air blowing mechanism (30), and the second air guide hole (190), the outer heat dissipation flow path (310) being separated from the inner circulation chamber (20) by the partition plate (1750).

8. The projector according to any one of claims 1 to 7, wherein a cover plate (210) is further disposed in the housing (10), and the cover plate (210) is disposed above the inner circulation chamber (20) and is respectively connected to the lens (150), the first air supply mechanism (160), the back phenanthrene mirror (140) and the first heat dissipation mechanism (170).

9. The projector according to any one of claims 1 to 7, wherein a second heat dissipation mechanism (40) is further disposed in the housing (10), and the second heat dissipation mechanism (40) is located at a side of the second air supply mechanism (30) close to the second air guide hole (190);

the second heat dissipation mechanism (40) is provided with a heat conduction sheet (410), and one end of the heat conduction sheet (410) extends to one side of the light source (110) away from the front phenanthrene mirror (120).

10. The projector according to any one of claims 1 to 7, wherein the first air supply mechanism (160) and the second air supply mechanism (30) are both radiator fans.