CN114047663A

CN114047663A - Projector and projector apparatus

Info

Publication number: CN114047663A
Application number: CN202111364938.8A
Authority: CN
Inventors: 朱妍玲
Original assignee: Shenzhen Ruifeng Times Communication Co ltd
Current assignee: Shenzhen Black Hole Optoelectronic Technology Co ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2022-02-15

Abstract

The present invention relates to a projector and a projection apparatus, the projector including: the optical machine is arranged in the shell; the heat dissipating device includes: the pump body and heat exchange pipeline, the heat exchange pipeline is located the casing outside is used for carrying the coolant liquid, the pump body set up in series in the heat exchange pipeline is used for the drive coolant liquid in the heat exchange pipeline flows, and part the heat exchange pipeline is located inside the casing and around the ray apparatus sets up. Above-mentioned projector includes the pump body and heat transfer pipeline, because the heat transfer pipeline encircles the ray apparatus setting, so set up the heat transfer pipeline and can absorb the heat of ray apparatus to this heat dissipation to the ray apparatus of realization. Under the drive of the pump body, the cooling liquid in the heat exchange pipeline can continuously flow, namely, the cooling liquid continuously flows through the periphery of the optical machine, so that the heat emitted by the optical machine is continuously absorbed. The projector device comprises the projector, and the noise generated when the projector radiates heat can be greatly reduced.

Description

Projector and projector apparatus

Technical Field

The invention relates to the technical field of projection display, in particular to a projector and a projection device.

Background

A projector, also called a projector, is a device capable of projecting images or videos onto a curtain. With the development of projector technology, projectors gradually develop toward small size and high brightness. Heat dissipation is a key issue in both reducing the projector volume and increasing the brightness of the light output. That is, the heat dissipation problem of the projector is one of the key factors that restrict the development of the projector.

In the prior art, a fan is usually arranged inside a projector, and air is blown by the fan to accelerate the flow speed of air on the surface of an optical machine of the projector, so that the heat of the projector is dissipated.

Based on the requirements of small size and high brightness of the projector at present, the fan cooling mode is adopted to continuously enhance the blowing intensity of the fan so as to adapt to the projector with small size and high brightness. However, this results in a continuous increase in the rotational speed of the fan, which on the one hand causes the fan itself to generate heat by friction with the air when it is rotating; on the other hand, a fan with high rotation speed can cause large noise, and the user experience is influenced.

Disclosure of Invention

Accordingly, it is desirable to provide a projector and a projection apparatus for solving the heat dissipation problem of the projector.

A projector, the projector comprising: the optical machine is arranged in the shell;

the heat dissipating device includes: the pump body and heat exchange pipeline, the heat exchange pipeline is located the casing outside is used for carrying the coolant liquid, the pump body set up in series in the heat exchange pipeline is used for the drive coolant liquid in the heat exchange pipeline flows, and part the heat exchange pipeline is located inside the casing and around the ray apparatus sets up.

In one embodiment, the heat exchange line is provided with a circuitous heat dissipation pipe section.

In one embodiment, the projector further comprises a hanging frame connected with the top of the shell, and the radiating pipe section is arranged on the hanging frame.

In one embodiment, the hoisting frame is communicated with the top of the shell through a hollow hoisting rod, and the heat exchange pipeline penetrates through the hoisting rod and extends into the shell.

In one embodiment, the heat exchange pipelines are distributed on the shell and the hoisting frame in an S shape; or

The heat exchange pipelines are distributed on the shell and the hoisting frame in a Z shape; or

The heat exchange pipelines are distributed on the shell and the hoisting frame in a W shape; or

The heat exchange pipelines are distributed on the shell and the hoisting frame in a spiral line shape.

In one embodiment, the projector further comprises a heat absorbing sheet, and the heat absorbing sheet is arranged around the light machine; the heat exchange pipeline is also provided with a heat absorption pipe section which is positioned in the shell and contacts the heat absorption sheet.

In one embodiment, a heat absorbing flow passage is formed in the heat absorbing sheet, and the heat absorbing pipe section is communicated with the heat absorbing flow passage and used for enabling cooling liquid to flow into the heat absorbing flow passage.

In one embodiment, the heat absorbing flow channels are distributed on the heat absorbing sheet in a winding manner.

In one embodiment, the projector further includes a heat sink disposed on the housing, and the heat sink is used to assist the heat dissipation device in dissipating heat.

In one embodiment, the projector further comprises a cooling device, and the cooling device is serially arranged on the heat exchange pipeline and used for cooling the cooling liquid.

A projection device, comprising:

a projector as described in any one of the above embodiments;

and the curtain is used for displaying the content projected by the projector.

In one embodiment, the heat exchange pipeline is partially and roundly arranged on the curtain.

Above-mentioned projector includes the pump body and heat transfer pipeline, because the heat transfer pipeline encircles the ray apparatus setting, so set up the heat transfer pipeline and can absorb the heat of ray apparatus to this heat dissipation to the ray apparatus of realization. Under the drive of the pump body, the cooling liquid in the heat exchange pipeline can continuously flow, namely, the cooling liquid continuously flows through the periphery of the optical machine, so that the heat emitted by the optical machine is continuously absorbed. Therefore, a fan is not required to be arranged on the projector, and noise can be greatly reduced. And, because the heat transfer pipeline is located the casing outside, can contact with external environment. Therefore, the heat-absorbed cooling liquid can exchange heat with the external environment through the pipe wall of the heat exchange pipeline, and the cooling liquid can be repeatedly used for heat dissipation of the light machine.

Drawings

FIG. 1 is a schematic axial view of a projection apparatus according to an embodiment;

FIG. 2 is a schematic axial view of the projector of the projection apparatus shown in FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

FIG. 4 is a schematic isometric view of the internal structure of the housing of the projector of FIG. 2;

FIG. 5 is a schematic axial view of an alternative angle of internal structure of the housing of the projector of FIG. 2;

fig. 6 is a partially enlarged view of fig. 5 at B.

Reference numerals: 10. a projection device; 100. a projector; 110. a housing; 120. an optical machine; 121. a lamp; 122. an imaging screen; 130. a heat sink; 131. a pump body; 132. a heat exchange line; 132a, a radiating pipe section; 132b, a heat absorbing pipe section; 132c, a water inlet pipe section; 132d, a water outlet pipe section; 140. a hoisting frame; 141. a containing groove; 150. hoisting the rod; 160. a heat absorbing sheet; 170. a heat sink; 200. a curtain.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

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 at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

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 intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1, fig. 1 is a schematic axial view illustrating a projection apparatus according to an embodiment of the present invention, and a projection apparatus 10 according to an embodiment of the present invention includes a projector 100 and a curtain 200. The curtain 200 is used to display the content projected by the projector 100. The projector 100 is disposed opposite to a side of the curtain 200 for displaying the projection content, so as to project the picture onto the curtain 200.

Referring to fig. 2, in one embodiment, the projector 100 includes: the housing 110, the optical engine 120 and the heat sink 130. The optical engine 120 is disposed inside the housing 110.

Referring to fig. 4, the heat sink 130 includes a pump body 131 and a heat exchange pipe 132. A heat exchange line 132 is provided outside the housing 110 for conveying the cooling fluid. The pump body 131 is serially disposed on the heat exchange pipeline 132 for driving the flow of the cooling liquid in the heat exchange pipeline 132. The partial heat exchange pipe 132 is located inside the housing 110 and is disposed around the optical engine 120.

The projector 100 includes a pump body 131 and a heat exchanging pipeline 132, wherein the heat exchanging pipeline 132 is disposed around the optical engine 120. So set up, heat exchange pipeline 132 can absorb the heat of ray apparatus 120 to this realization is to the heat dissipation of ray apparatus 120. Under the driving of the pump body 131, the cooling liquid in the heat exchanging pipeline 132 can continuously flow, that is, the cooling liquid continuously flows through the periphery of the optical engine 120, so as to continuously absorb the heat dissipated by the optical engine 120. Thus, a fan is not required to be provided on the projector 100, and noise can be greatly reduced. Also, since the heat exchange line 132 is disposed outside the housing 110, it can be in contact with the external environment. Thus, the heat-absorbed coolant can exchange heat with the external environment through the tube wall of the heat exchange pipeline 132, so that the coolant can be repeatedly used for heat dissipation of the optical machine 120.

Referring to fig. 4, in one embodiment, the optical engine 120 includes a lamp 121 and an image screen 122, heat of the optical engine 120 is generated from the lamp 121 and the image screen 122, the main heat source is the lamp 121, and the temperature of the lamp 121 will affect the brightness. That is, the higher the temperature of the lamp 121 is, the more the brightness thereof is attenuated. It will be appreciated that the heat exchange conduit 132 is disposed around the lamp 121 and the imaging screen 122. The surrounding means that the heat exchange pipeline 132 may be disposed around the lamp 121 and the imaging screen 122 to absorb heat dissipated by the lamp 121 and the imaging screen 122, or the pipe wall of the heat exchange pipeline 132 may be connected to the non-working area on the lamp 121 and the imaging screen 122 to absorb heat dissipated by the lamp 121 and the imaging screen 122. It is understood that the working area of the lamp 121 refers to the area emitting light, and the working area on the imaging screen 122 refers to the area on the imaging screen 122 for imaging; the non-working area of the lamp 121 refers to the non-illuminated area on the lamp 121 and the non-working area on the imaging screen 122 refers to the non-imaged area on the imaging screen 122.

Referring to fig. 2 and 3, in one embodiment, the heat exchanging pipe 132 is provided with a circuitous heat dissipating pipe section 132 a. Since the heat exchange pipe 132 has the circuitous radiating pipe section 132a, the length of the radiating pipe section 132a located outside the housing 110, that is, the length through which the cooling fluid flows, can be relatively lengthened. Accordingly, the cooling fluid in the radiating pipe section 132a can be sufficiently heat-exchanged with the outside through the radiating pipe section 132a, so that the cooling fluid can be sufficiently radiated, and the cooling fluid can be conveniently repeatedly heat-exchanged with the heat absorbing sheet 160. I.e., to facilitate the heat sink 130 to continuously dissipate heat from the light engine 120.

Referring to fig. 3, in one embodiment, the projector 100 further includes a hanger 140 connected to the top of the housing 110. The heat dissipating tube section 132a is mounted on the hanger 140. Specifically, the mounting frame 140 is used to hold the projector 100 fixed to other structures such as a wall or a ceiling. The radiating pipe section 132a is roundly arranged on the hoisting frame 140, so that the radiating pipe section 132a can be in full contact with the external environment to radiate heat. Moreover, the heat dissipation tube section 132a is arranged on the hoisting frame 140 in a winding manner, and the heat dissipation tube section 132a does not need to be carried by other structures. Thus, the projector 100 can be reduced in size, facilitating installation of the projector 100.

With continued reference to fig. 3, in one embodiment, the lifting frame 140 is connected to the top of the housing 110 through a hollow lifting rod 150, and the heat exchange pipeline 132 extends into the interior of the housing 110 through the lifting rod 150. Specifically, to ensure the hoisting function of the hoisting rod 150, the hoisting rod 150 is usually made of a metal material so as to have sufficient strength to hoist the housing 110 and the optical engine 120. Thus, the heat dissipation pipe section 132a inserted into the hoisting rod 150 can transfer heat to the outside through the hoisting rod 150 to realize heat dissipation. The hoisting function means that two ends of the hoisting rod 150 are respectively connected with the supporting body and the wall body, and the like, so that the supporting body and the components supported by the supporting body are kept relatively fixed.

Further, the hanging frame 140 is provided with a containing groove 141, the containing groove 141 is communicated with the outside, and the heat exchange pipeline 132 is roundly arranged in the containing groove 141. Specifically, the heat dissipation pipe section 132a is disposed inside the receiving groove 141 in a winding manner, and since the receiving groove 141 is communicated with the outside, the cooling liquid inside the heat dissipation pipe section 132a can dissipate heat sufficiently through the pipe wall of the heat dissipation pipe section 132a and/or the groove wall of the receiving groove 141. The heat dissipation pipe section 132a is disposed in the accommodating groove 141, so that the space occupied by the heat exchange pipe 132 can be further saved, the structure of the projector 100 is smaller, and the projector 100 can be conveniently mounted.

Referring to fig. 2 and 3, in one embodiment, the heat exchange pipes 132 are distributed on the housing 110 and the lifting frame 140 in an S-shape. Or the heat exchange pipes 132 are distributed on the shell 110 and the hoisting frame 140 in a zigzag shape. Or the heat exchange pipes 132 are distributed on the shell 110 and the hoisting frame 140 in a W shape. Or the heat exchange pipes 132 are spirally distributed on the shell 110 and the hoisting frame 140. So set up, can improve the mobile stroke of coolant liquid to the coolant liquid heat dissipation can improve heat exchange pipeline 132's radiating effect. It should be understood that the heat exchange pipes 132 may be disposed in other forms to be distributed on the shell 110, the lifting rod 150 and the lifting frame 140, and the distribution form of the heat exchange pipes 132 may be adaptively adjusted according to the installation manner of the projector 100, the mechanism of the lifting frame 140, the structural limitation of the wall body, or other requirements, which is not limited herein.

It is understood that the above-described distribution shapes of the heat exchange tubes 132 are also applicable to the heat dissipation tube segments 132a, and will not be described herein.

Referring to fig. 1 to 4, in the above embodiment, it can be understood that, first, the heat exchanging pipeline 132 is disposed outside the casing 110 of the projector 100, and a part of the heat exchanging pipeline 132 passes through the casing 110 and surrounds the optical engine 120 or is connected to the optical engine 120. Therefore, the heat emitted by the optical engine 120 is absorbed to ensure that the brightness of the optical engine 120 is not attenuated, and the performance of the projector 100 is ensured. Further, the heat radiating pipe section 132a of the heat exchanging pipe 132 is roundly disposed on the housing 110. With this arrangement, when the cooling liquid absorbing heat of the optical engine 120 flows through the circuitous heat dissipation section 132a, the circuitous distribution shape can relatively increase the time for heat exchange between the cooling liquid and the external environment, so that the cooling liquid can fully dissipate heat.

It is understood that the heat pipe segment 132a is not intended to refer to only a single pipe segment. That is, the radiating pipe section 132a may include a water inlet pipe section 132c and a water outlet pipe section 132 d. The outlet pipe section 132d is used to transport the cooling liquid that has exchanged heat with the projector 100 but does not sufficiently dissipate the heat. The water inlet pipe section 132c is used for conveying cooling liquid which is not subjected to heat exchange with the projector 100 or has finished heat dissipation. It should be understood that the above description of the outlet pipe section 132d and the inlet pipe section 132c is only for the convenience of understanding the structure and function of the heat exchange pipeline 132, and does not limit the distinct and clear division point between the outlet pipe section 132d and the inlet pipe section 132c, since the heat dissipation process of the cooling liquid is a continuous process.

Referring to fig. 4-6, in one embodiment, the projector 100 further includes a heat sink 160, and the heat sink 160 is disposed around the light engine 120. The heat exchange line 132 is also provided with a heat absorption tube section 132 b. The heat absorbing pipe section 132b is located inside the housing 110 and contacts the heat sink 160. The heat sink 160 may be disposed around the light engine 120 to absorb heat emitted from the light engine 120. The heat sink can also be connected to the light engine 120 to more efficiently absorb heat dissipated by the light engine 120. By providing the heat absorbing sheet 160, the area of the heat absorbing pipe section 132b absorbing the heat of the optical engine 120 can be increased, so as to improve the heat absorbing efficiency, i.e. the heat dissipating efficiency of the optical engine 120. And the heat absorbing pipe section 132b is contacted with the optical machine 120, thereby facilitating sufficient heat exchange between the heat absorbing pipe section 132b and the heat absorbing sheet 160, and thus absorbing heat of the heat absorbing sheet 160. Thereby transferring heat from the optical engine 120 to the cooling fluid.

It is understood that the heat sink 160 is a good conductor of heat, and the heat sink 160 may be made of aluminum or copper, for example, so as to conduct the heat of the optical engine 120 to the cooling liquid. It should be understood that the heat sink 160 may be made of other materials according to the heat dissipation requirement or structural requirement, and is not limited herein.

Further, in one embodiment, a heat absorbing flow passage (not shown, the same applies below) is formed in the heat absorbing sheet 160, and the heat absorbing pipe section 132b is communicated with the heat absorbing flow passage for flowing the coolant into the heat absorbing flow passage. The heat absorbing flow passage is opened inside the heat absorbing sheet 160, and the coolant can flow into the heat absorbing flow passage from the heat exchanging line 132. With this arrangement, the coolant can flow into the heat absorbing sheet 160, and can sufficiently exchange heat with the heat absorbing sheet 160. Accordingly, the temperature of the heat sink 160 can be effectively reduced, and the heat dissipation effect of the projector 100 can be improved.

In one embodiment, the heat absorbing channels are distributed on the heat absorbing sheet 160 in a winding manner. Specifically, the heat absorbing flow paths are distributed inside the heat absorbing sheet 160 in a circuitous manner. This increases the distance that the cooling fluid travels within the heat absorbing sheet 160, and allows the cooling fluid to exchange heat with the heat absorbing sheet 160 sufficiently. Moreover, the heat absorbing flow channels distributed in a serpentine shape can reach all areas on the heat absorbing sheet 160, so that the cooling liquid can flow through all areas on the heat absorbing sheet 160, and all areas on the heat absorbing sheet 160 can exchange heat with the cooling liquid, thereby improving the heat dissipation efficiency.

It will be appreciated that the receiver tubing section 132b also includes the inlet tubing section 132c and the outlet tubing section 132d described above. The water inlet pipe 132c communicates with the heat absorbing flow passage, and the water inlet pipe 132c transfers the cooling liquid that has not exchanged heat with the projector 100 or has dissipated heat to the inside of the heat absorbing sheet 160 through the heat absorbing flow passage to absorb heat of the heat absorbing sheet 160. The outlet pipe 132d is also connected to the heat absorption flow channel, and the outlet pipe 132d delivers the cooling liquid flowing through the heat absorption flow channel to the outside of the housing 110 for sufficient heat exchange with the external environment to dissipate heat.

In one embodiment, the heat absorbing flow channels may be distributed on the heat absorbing sheet 160 in an S-shape, a W-shape or a spiral shape. It should be understood that the heat absorbing flow channels may also be disposed in other forms distributed on the heat absorbing sheet 160, and may be disposed according to the relative position between the optical engine 120 and the heat absorbing sheet 160, and the like, and is not limited herein.

Referring to fig. 6, in the above embodiment, the heat absorbing flow channel includes a plurality of flow segments connected end to end in sequence, and the plurality of flow segments that are not directly connected are uniformly distributed at intervals. In other words, the heat absorbing sheet 160 is provided therein with a plurality of evenly spaced flow sections, and the evenly spaced flow sections are communicated with each other through other flow sections to form a heat absorbing flow passage. With the arrangement, the areas of the heat absorbing sheets 160 passing by the flow sections can be reasonably distributed. Therefore, the cooling fluid flowing through the heat absorbing flow passage can exchange heat with each region of the heat absorbing fin 160 sufficiently, so that the heat exchange process is more thorough and sufficient.

It should be understood that the heat absorption circuit is coupled to the heat sink 160 rather than passing through the interior of the heat sink 160. The heat exchange pipeline 132 may also include a plurality of pipe segments connected end to end in sequence, and the plurality of pipe segments that are not directly connected are distributed at even intervals to improve the heat exchange effect.

Further, it is understood. The heat dissipating tube section 132a may also include a plurality of tube sections connected end to end in sequence, and the plurality of tube sections that are not directly connected are uniformly spaced from each other and are connected to the housing 110 and the hanger 140. Therefore, the mutual influence of different pipe sections on the heat dissipation pipe section 132a on the respective heat dissipation effect can be avoided, so as to improve the heat dissipation effect of the heat dissipation pipe section 132 a.

Continuing to refer to fig. 6, in one embodiment, the projector 100 further includes a heat sink 170. The heat sink 170 is disposed on the housing 110, and the heat sink 170 is used to assist the heat sink 130 in dissipating heat. Specifically, the heat sink 170 may only absorb heat of the image screen 122, so as to avoid the heat of the lamp 121 and the heat of the image screen 122 from being affected by each other in a staggered manner, and avoid efficiency conversion loss therebetween. The luminous efficiency of the lamp 121 and the transmittance of the imaging screen 122 to light are improved to the maximum extent. Therefore, the lumen degree of the projector is maintained at the optimal level, and the service life of the whole projector is prolonged. The heat sink 170 may be, for example, a heat dissipation fan or a semiconductor heat dissipation device, and different heat sinks 170 may be provided according to actual requirements, which is not limited herein.

Of course, in some embodiments, the heat of the projector 100 can be dissipated only through the heat sink 130.

With continued reference to fig. 6, in one embodiment, the pump body 131 may be disposed inside the housing 110. The water inlet of the pump body 131 is used for connecting with the heat radiating pipe section 132a, and the cooling liquid is driven from the heat radiating pipe section 132a to the heat absorbing pipe section 132b through the pump body 131. The water outlet of the pump body 131 is connected to the heat absorbing pipe section 132b for driving the cooling fluid in the heat absorbing pipe section 132b to flow through the regions of the heat absorbing sheet 160, so as to sufficiently absorb the heat on the heat absorbing sheet 160.

It should be understood that the pump body 131 may be disposed at other positions of the projector 10 in response to the demand for light weight and small size of the projector 100. Specifically, for example, the pump 131 may be disposed on the curtain 200, and may be fixed to a wall through the curtain 200. Of course, the pump body 131 may be provided in other portions of the projection apparatus 10, and is not limited thereto, and may be adaptively adjusted according to a specific working environment.

In one embodiment, in combination with various embodiments, the heat exchange circuit 132 includes a heat absorption section 132b, i.e., a heat dissipation section 132 a. The heat absorbing pipe section 132b is mainly located inside the casing 110 and is used for absorbing heat emitted by the optical engine 120 directly or indirectly, so the heat absorbing pipe section 132b may be made of a material with a good heat conductivity, specifically, a material such as copper, aluminum, or copper-aluminum composite. The heat dissipating pipe section 132a is mainly located outside the housing 110 and can be required to be roundly disposed on the housing 110 and the hanging frame 140, so that the heat dissipating pipe section 132a can be made of a material such as a rubber tube, which is convenient for installing the projector 100. Of course, it should be emphasized that the thermal conductivity of the heat pipe section 132a is also critical for heat dissipation, and may also be made of copper, aluminum, or copper-aluminum composite material. It should be understood that the above description of the material of the heat exchange pipeline 132 does not limit the heat exchange pipeline 132 to only adopt the above material, and a more suitable material may be selected according to actual requirements, and is not limited herein.

In one embodiment, the projector 100 further includes a temperature reduction device (not shown, the same applies below) disposed in series on the heat exchange line 132 for reducing the temperature of the cooling liquid. Specifically, the cooling devices may be disposed in series on the heat sink section 132 a. Since the heat dissipation pipe section 132a is disposed outside the housing 110, the position and connection structure of the heat dissipation pipe section 132a can be more flexibly and freely set without being limited by the volume of the housing 110. When the required output power of the optical machine 120 is high and the cooling liquid in the heat exchange pipeline 132 cannot fully exchange heat with the external environment, the cooling device can absorb the heat of the cooling liquid, so that the cooling liquid can be fully cooled, and the cooling liquid flows into the heat absorption pipe section 132b to absorb the heat of the optical machine 120, thereby fully dissipating the heat of the optical machine 120.

Referring again to fig. 1, in one embodiment, the heat exchange pipeline 132 is partially circuitously disposed on the curtain 200. Since the heat exchange pipeline 132 is disposed on the curtain 200, no additional space is occupied. The heat exchange pipeline 132 is disposed on the curtain 200, so as to reasonably utilize the space on the curtain 200 and the carrying capacity of the curtain 200, thereby saving the space occupied by the projection apparatus 10 and facilitating the installation of the projection apparatus 10.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A projector, characterized in that the projector comprises: the optical machine is arranged in the shell;

2. The projector as defined in claim 1, wherein the heat exchange circuit is provided with a circuitous heat dissipation tube segment.

3. The projector of claim 2, further comprising a hanger attached to the top of said housing, said heat pipe segments being mounted to said hanger.

4. The projector as claimed in claim 3, wherein the hoisting frame is connected to the top of the housing through a hollow hoisting rod, and the heat exchange pipeline extends into the housing through the hoisting rod.

5. The projector as claimed in claim 3, wherein the heat exchange pipeline is distributed on the housing and on the hoisting frame in an S shape; or

6. The projector as claimed in claim 1, further comprising a heat sink disposed around the light engine; the heat exchange pipeline is also provided with a heat absorption pipe section which is positioned in the shell and contacts the heat absorption sheet.

7. The projector as defined in claim 6, wherein a heat absorbing flow passage is formed in the heat absorbing sheet, and the heat absorbing pipe section communicates with the heat absorbing flow passage for flowing a coolant into the heat absorbing flow passage.

8. The projector as claimed in claim 7, wherein the heat absorbing flow paths are distributed on the heat absorbing sheet in a winding manner.

9. The projector of claim 1, further comprising a heat sink disposed on the housing, the heat sink being configured to assist the heat dissipation device in dissipating heat.

10. The projector as claimed in claim 1, further comprising a cooling device disposed in the heat exchanging pipeline in series for cooling the cooling liquid.

11. A projection device, comprising:

a projector according to any one of claims 1 to 10;

and the curtain is used for displaying the content projected by the projector.

12. The projection device of claim 11, wherein the heat exchange tube is partially circuitously disposed on the curtain.