Projection device

Abstract

The present invention provides a projection device for projecting an image along a projection direction. The projection device comprises a housing and a projection module. The housing has an air inlet and an air outlet, and the air inlet, the air outlet and the projection direction are in the same direction. The projection module is arranged in the housing. The projection direction is in the same direction as the gravity direction.

Description

Technical Field

[0001] The present invention relates to a device, and in particular to a projection device. Background Art

[0002] The existing projection device includes a housing, an air outlet and an air inlet, wherein the air outlet and the air inlet are provided on the side panel of the housing. Such a structure is generally only suitable for being placed on a desktop, which in turn limits the configuration orientation of the projection device. Therefore, how to improve the above-mentioned problem is an important issue for the industry in this field. Summary of the invention

[0003] Therefore, an object of the present invention is to provide a projection device that can improve the problems existing in the above-mentioned prior art.

[0004] To achieve the above-mentioned purpose, the present invention proposes a projection device for projecting an image along a projection direction, characterized in that the projection device comprises: a housing having a first air inlet and a first air outlet, the direction of the first air inlet, the direction of the first air outlet and the projection direction being the same; and a projection module disposed in the housing; wherein the projection direction is the same as the direction of gravity.

[0005] Preferably, the projection device is embedded in a recess of a carrier, the first air inlet and the first air outlet are exposed from the recess, and the gravity direction passes through the recess.

[0006] Preferably, the projection device further includes: a first fan having a second air inlet, the position of the second air inlet corresponding to the first air inlet; and a second fan having a second air outlet, the position of the second air outlet corresponding to the first air outlet.

[0007] Preferably, the first fan is disposed on the projection module, and the second fan is disposed on the housing.

[0008] Preferably, the housing has a side panel, the side panel has the first air outlet, the first air inlet and an opening; the projection module includes: a projection lens protruding relative to the opening.

[0009] Preferably, the first air outlet and the first air inlet are arranged in the same plane.

[0010] Preferably, the projection module is pivotally connected to the housing.

[0011] Preferably, the projection module further comprises: a first pivoting member; wherein the housing comprises a second pivoting member, and the second pivoting member is pivotally connected to the first pivoting member.

[0012] Preferably, the projection module includes an optical machine: the projection device also includes: a third fan, arranged adjacent to the optical machine, the third fan having a third air inlet and a third air outlet, the third air inlet facing the optical machine, and the third air outlet facing the housing.

[0013] Preferably, the third fan is disposed on the projection module.

[0014] Preferably, the projection module further comprises: a housing having an opening; and a power control unit disposed adjacent to the opening; wherein the projection device comprises a second fan disposed outside the housing and adjacent to the opening.

[0015] Preferably, the projection module includes: an optical machine; a heat dissipation module, which is arranged adjacent to the optical machine and is used to conduct heat of the optical machine; and a housing, which surrounds the optical machine and the heat dissipation module.

[0016] Preferably, the projection device comprises: a second fan having a fourth air inlet; wherein the projection module further comprises a shell having an opening, the position of the opening corresponds to the fourth air inlet.

[0017] Preferably, the projection module is connected to the housing in a relatively rotatable manner, and when the projection module and the housing are relatively rotated, the movement path of the opening of the housing corresponds to the fourth air inlet.

[0018] Preferably, the projection module includes an optical machine, and the projection device further includes: a fan, which is arranged on the optical machine.

[0019] Compared with the prior art, the housing of the projection device of the embodiment of the present invention has an air inlet and an air outlet, wherein the air inlet, the air outlet, the projection direction and the gravity direction are substantially in the same direction. Thus, the air inlet and the air outlet can be exposed from the bottom of the projection device, so that air can flow between the air inlet and the air outlet, and the projection device can project images downward (for example, toward the ground, a table, a floor or a lower board).

[0020] In order to better understand the above and other aspects of the present invention, the following embodiments are specifically described in detail with reference to the accompanying drawings as follows: BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of a projection device according to an embodiment of the present invention is shown.

[0022] Figure 2 Draw Figure 1 Schematic diagram of the projection device along direction 2-2'.

[0023] Figure 3 Draw Figure 2 A schematic diagram showing a movement path of the opening of the shell corresponding to the air inlet of the second fan.

[0024] Figure 4 A schematic diagram of a projection device according to another embodiment of the present invention is shown. DETAILED DESCRIPTION

[0025] In order to provide a further understanding of the purpose, structure, features, and functions of the present invention, the following detailed description is given in conjunction with the embodiments.

[0026] Please refer to Figures 1 to 3 , Figure 1 A schematic diagram of a projection device 100 according to an embodiment of the present invention is shown. Figure 2 Draw Figure 1 A schematic diagram of the projection device 100 along direction 2-2', and Figure 3 Draw Figure 2 Schematic diagram of a moving path P1 of the opening 124 a of the housing 124 corresponding to the air inlet 140 i of the second fan 140 .

[0027] The projection device 100 is used to project an image (not shown) along a projection direction Z. The projection device 100 includes a housing 110, a projection module 120, a first fan 130, a second fan 140 and a third fan 150. The X, Y and Z axes of the figure are substantially perpendicular to each other.

[0028] In one embodiment, the housing 110 has an air inlet (first air inlet) 110i and an air outlet (first air outlet) 110e, and the air inlet 110i, the air outlet 110e and the projection direction Z are substantially in the same direction, that is, the direction of the air inlet 110i, the direction of the air outlet 110e and the projection direction Z are substantially in the same direction. The projection module 120 is at least partially disposed in the housing 110. The projection direction Z is substantially in the same direction as the gravity direction, for example, both are downward, so that the projection device 100 can project images toward the ground, the desktop, the floor or the lower board.

[0029] like Figure 2 As shown, the air outlet 110e and the air inlet 110i are substantially coplanar, that is, the surface where the air outlet 110e is located and the surface where the air inlet 110i is located are coplanar. In another embodiment, the air outlet 110e and the air inlet 110i may also have a step difference along the gravity direction, that is, there may be a height difference between the air outlet 110e and the air inlet 110i.

[0030] like Figure 2As shown, the projection device 100 can be embedded in the recess 10r of the carrier 10, for example, the housing 110 of the projection device 100 can be fixed in the recess 10r. Depending on the type of the carrier 10, the recess 10r can be a through hole or a blind hole. The direction of gravity passes through the recess 10r. The carrier 10 is, for example, a ceiling of a building, an upper shell of a vehicle, etc. The air inlet 110i and the air outlet 110e are exposed from the recess 10r to allow airflow to enter from the air inlet 110i and flow out from the air outlet 110e.

[0031] like Figure 2 As shown, the housing 110 has a side plate 111, and the side plate 111 has the aforementioned air outlet 110e and air inlet 110i and an opening 110a. The projection module 120 includes a projection lens 121, and the projection lens 121 is at least partially disposed in the housing 110. The projection lens 121 protrudes relative to the opening 110a for easy operation. For example, the protruding portion of the projection lens 121 relative to the opening 110a can be operated to adjust the angle of the projection lens 121 relative to the housing 110.

[0032] like Figure 2 As shown, the projection module 120 further includes an optical engine 122, a heat dissipation module 123, a housing 124, and a power control unit 125. At least part of the projection lens 121, the optical engine 122, the heat dissipation module 123, and the power control unit 125 is disposed in the housing 124. The projection lens 121, the optical engine 122, the heat dissipation module 123, and the power control unit 125 can be linked with the housing 124. In this way, when the housing 124 rotates relative to the housing 110, the projection lens 121, the optical engine 122, the heat dissipation module 123, and the power control unit 125 also rotate with the housing 110. Since the optical engine 122 can rotate with the housing 110, the angle and / or position of the projected image relative to the projection module 120 can be changed.

[0033] like Figure 2 As shown, the heat dissipation module 123 is disposed adjacent to the optical engine 122 and can conduct the heat of the optical engine 122. The heat dissipation module 123 may include a heat sink 1231 and a heat conductor 1232, and the heat conductor 1232 can conduct heat to the heat dissipation fin 1231. In one embodiment, the heat conductor 1232 is, for example, a heat pipe. The position of the heat dissipation fin 1231 corresponds to the first fan 130, so that the first fan 130 can dissipate heat from the heat dissipation fin 1231.

[0034] like Figure 2As shown, the housing 124 surrounds the optical engine 122, the heat dissipation module 123 and the power control unit 125 to limit the heat generated by these components within the housing 124. In this way, when the housing 124 moves relative to the outer shell 110, most of the heat is still controlled / limited in the space within the housing 124, so that the airflow within the housing 124 can absorb most of the heat generated by these components within the housing 124.

[0035] like Figure 2 As shown, the housing 124 has an opening 124a. The power control unit 125 is disposed adjacent to the opening 124a. The heat generated by the power control unit 125 can be convected to the second fan 140 through the opening 124a, and the second fan 140 can dissipate heat from the power control unit 125.

[0036] like Figure 2 As shown, the projection module 120 is pivotally connected to the housing 110. The term "pivot" herein means that two components can rotate relative to each other, and does not limit the technical means of relative rotation. In an embodiment, the projection module 120 further includes at least one first pivot member 126, and the housing 110 includes at least one second pivot member 112, wherein the second pivot member 112 is pivotally connected to the first pivot member 126, so that the projection module 120 and the housing 110 can rotate relative to each other. In an embodiment, the second pivot member 112 extends along the X-axis, so that the projection module 120 can rotate relative to the housing 110 around the X-axis.

[0037] like Figure 2 As shown, the first fan 130 has an air inlet (second air inlet) 130i and an air outlet 130e. The first fan 130 can drive the first airflow G1 to enter from the air inlet 130i and flow out from the air outlet 130e. The position of the air inlet 130i corresponds to the air inlet 110i. In this way, the first fan 130 can force the first airflow G1 to enter the housing 110 to absorb the heat inside the projection device 100. The air outlet 130e is directly opposite to the heat dissipation fins 1231. In this way, the first airflow G1 flowing out of the air outlet 130e can pass through the heat dissipation fins 1231 and absorb the heat of the heat dissipation fins 1231.

[0038] like Figure 2As shown, the third fan 150 has an air inlet (third air inlet) 150i and an air outlet (third air outlet) 150e. The third fan 150 can drive the first airflow G1 to enter from the air inlet 150i and flow out from the air outlet 150e. In addition, the third fan 150 is arranged adjacent to the optical machine 122, and the second airflow G2 can absorb the heat of the optical machine 122. The air inlet 150i faces (e.g., directly facing) the optical machine 122, so that the second airflow G2 that absorbs the heat of the optical machine 122 can enter from the air inlet 150i and flow out from the air outlet 150e. In addition, the housing 110 has a side panel 113, and the side panel 113 and the aforementioned side panel 111 are opposite side panels of the housing 110. The air outlet 150e faces (e.g., directly faces) the side plate 113 of the housing 110, so that the airflow (the first airflow G1 and the second airflow G2) flowing out of the air outlet 150e can be rebounded by the side plate 113 and discharged out of the projection device 100 by the second fan 140 after rebounding. In addition, in another embodiment, part of the heat of the power control unit 125 may also be discharged out of the projection device 100 through the second airflow G2 and / or the first airflow G1.

[0039] like Figure 2 As shown, the second fan 140 has an air inlet 140i and an air outlet (second air outlet) 140e. The second fan 140 can drive airflow (first airflow G1, second airflow G2 and third airflow G3) to enter from the air inlet 140i and flow out from the air outlet 140e. The third airflow G3 can absorb the heat of the power control unit 125. The position of the air inlet 140i corresponds to the opening 124a of the housing 124, so that the third airflow G3 can enter the air inlet 140i through the opening 124a and be discharged to the outside of the projection device 100 from the air outlet 140e. In addition, the first airflow G1 and the second airflow G2 can also enter the air inlet 140i and be discharged to the outside of the projection device 100 from the air outlet 140e. In addition, in another embodiment, part of the heat of the optical engine 122 may also be discharged to the outside of the projection device 100 through the third airflow G3 and / or the first airflow G1.

[0040] In summary, the heat generated by any component in the projection device 100 can be discharged to the outside of the projection device 100 through at least one of the first airflow G1 , the second airflow G2 , and the third airflow G3 .

[0041] like Figure 2 As shown, in this embodiment, the first fan 130 and the third fan 150 are disposed on the projection module 120, so that the first fan 130 and the third fan 150 can be linked with the projection module 120. The second fan 140 is disposed on the housing 110. The second fan 140 may not rotate with the projection module 120, so that during the rotation of the projection module 120 relative to the housing 110, the air outlet 140e of the second fan 140 still remains corresponding to (e.g., facing) the air outlet 110e.

[0042] like Figure 3 As shown, when the projection module 120 and the housing 110 rotate relative to each other, the housing 124 (the housing 124 is shown in FIG. Figure 2 ) of the opening 124a (the opening 124a is shown in Figure 2 ) corresponds to the air inlet 140i of the second fan 140. Thus, even if the projection module 120 rotates relative to the housing 110, the opening 124a of the housing 124 still remains corresponding to the air inlet 140i of the fourth fan 140, so that the airflows (the first airflow G1, the second airflow G2, and the third airflow G3) are not affected by the rotation and can continue to enter the air inlet 140i.

[0043] Please refer to Figure 4 , which shows a schematic diagram of a projection device 200 according to another embodiment of the present invention. The projection device 200 is used to project an image (not shown) along a projection direction Z. The projection device 200 includes a housing 110, a projection module 120, a first fan 130, a second fan 140, a third fan 150, a fourth fan 230, and a fifth fan 240. The projection device 200 of the embodiment of the present invention has the same or similar technical features as the projection device 100, except that the projection device 200 further includes a fourth fan 230 and a fifth fan 240.

[0044] like Figure 4 As shown, the fourth fan 230 and the fifth fan 240 are disposed in the housing (not shown) of the optical engine 122. For example, the housing of the optical engine 122 has at least one through hole (not shown), and the fourth fan 230 and the fifth fan 240 are disposed inside or outside the housing corresponding to the through hole. The fourth fan 230 and the fifth fan 240 can drive airflow into the optical engine 122 to cool the optical engine 122. For example, under the forced convection of the fourth fan 230, the fourth airflow G4 sequentially passes through the opening 110a of the housing 110, the opening 124b of the housing 124, the fourth fan 230 and the optical engine 122, and is discharged outside the optical engine 122 through the third fan 150, and then after rebounding from the side plate 113, it is discharged outside the projection device 200 through the second fan 140. Similarly, under the forced convection of the fifth fan 240, the fifth airflow G5 passes through the opening 110a of the outer shell 110, the opening 124b of the shell 124, the fifth fan 240 and the optical machine 122 in sequence, and is discharged out of the optical machine 122 through the third fan 150, and then bounces off the side panel 113 and is discharged out of the projection device 200 through the second fan 140.

[0045] In another embodiment, the projection device 200 may omit either the fourth fan 230 or the fifth fan 240 .

[0046] Although not shown, the first airflow G1, the second airflow G2, and the third airflow G3 of the projection device 200 can cool the projection device 200 under the forced convection of the first fan 130, the second fan 140, and the third fan 150. In addition, the heat generated by any component in the projection device 200 can be discharged to the outside of the projection device 200 through at least one of the first airflow G1, the second airflow G2, the third airflow G3, the fourth airflow G4, and the fifth airflow G5.

[0047] In summary, the housing of the projection device of the embodiment of the present invention has an air inlet and an air outlet, wherein the air inlet, the air outlet, the projection direction and the gravity direction are substantially in the same direction. Thus, the air inlet and the air outlet can be exposed from the bottom of the projection device, so that air can flow between the air inlet and the air outlet, and the projection device can project images downward (for example, toward the ground, a table, a floor or a lower plate).

[0048] The present invention has been described by the above-mentioned relevant embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, changes and modifications made without departing from the spirit and scope of the present invention are all within the scope of patent protection of the present invention.

Claims

1. A projection device for projecting an image along a projection direction, characterized in that: The projection device comprises: The housing comprises a first side panel and a second side panel, the first side panel comprises a first air inlet and a first air outlet, the first air inlet and the first air outlet are in the same direction as the projection direction, and the second side panel is opposite to the first side panel; A projection module is connected to the housing so as to be relatively rotatable, the projection module comprising an optical machine and a housing, the housing surrounds the optical machine and has an opening; A second fan is fixedly disposed on the housing, the second fan having a fourth air inlet and a second air outlet, the second air outlet being located at a position corresponding to the first air outlet; and A third fan is disposed adjacent to the optical engine, the third fan having a third air inlet and a third air outlet, the third air inlet faces the optical engine, and the third air outlet faces the second side plate of the housing; Among them, the third air outlet is adjacent to the opening and has a different direction, the projection direction is the same as the gravity direction, and when the projection module and the shell rotate relative to each other, the opening of the shell moves and always faces the fourth air inlet; the airflow flowing out of the third air outlet rebounds from the second side panel and then enters the fourth air inlet.

2. The projection device according to claim 1, characterized in that: The projection device is used to be buried in a concave portion of a carrier, the first air inlet and the first air outlet are exposed from the concave portion, and the gravity direction passes through the concave portion.

3. The projection device according to claim 1, characterized in that: Also includes: The first fan has a second air inlet, and the position of the second air inlet corresponds to the first air inlet.

4. The projection device according to claim 3, characterized in that: The first fan is configured on the projection module.

5. The projection device according to claim 1, characterized in that: The first side plate has an opening; the projection module comprises: The projection lens protrudes relative to the opening.

6. The projection device according to claim 1, characterized in that: The first air outlet and the first air inlet are coplanarly arranged.

7. The projection device according to claim 1, characterized in that: The projection module is pivotally connected to the housing.

8. The projection device according to claim 7, characterized in that: The projection module also includes: a first pivot member; Wherein, the housing includes a second pivoting member, and the second pivoting member is pivotally connected to the first pivoting member.

9. The projection device according to claim 1, wherein: The third fan is configured on the projection module.

10. The projection device according to claim 1, characterized in that: The projection module also includes: a power control unit, disposed adjacent to the opening; The projection device includes a second fan, which is disposed outside the housing and adjacent to the opening.

11. The projection device according to claim 1, wherein: The projection module includes: A heat dissipation module, disposed adjacent to the optical machine and used to conduct heat from the optical machine; The shell surrounds the heat dissipation module.

12. The projection device according to claim 1, characterized in that: The projection device also includes: A fan is configured in the optical machine.

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