Projector and light source module thereof

Abstract

The present application provides a projector and a light source module. The projector comprises the light source module, a light valve and a projection lens. The light source module is used for providing an illumination beam and comprises a seat, a first color light emitting unit, a second color light emitting unit, a first heat dissipation structure connected to the first color light emitting unit and a second heat dissipation structure connected to the second color light emitting unit. The seat has a first side and a second side. The first color light emitting unit is arranged on the first side. The second color light emitting unit is arranged on the second side. The first heat dissipation structure and the second heat dissipation structure are separated from each other and jointly define a containing space. The light valve is located on a transmission path of the illumination beam and is used for converting the illumination beam into an image beam. The projection lens is located on a transmission path of the image beam and is used for projecting the image beam. The projector and the light source module thereof can utilize the heat dissipation structure to well dissipate heat of the light source module in a limited configuration space.

Description

Technical Field

[0001] This invention relates to a display device and its optical module, and more particularly to a projector and its light source module. Background Technology

[0002] Currently, most projectors utilize light-emitting diodes (LEDs) to provide the light required for projection. The LED light source in a projector typically includes red, green, and blue light-emitting units, each with different heat generation and cooling requirements. Furthermore, with the trend towards miniaturization in projector design, internal space is limited. Therefore, how to design heat dissipation for the LED light source within a limited space to ensure good heat dissipation efficiency for all three light-emitting units (red, green, and blue) while simultaneously maintaining the structural strength of the heat dissipation components is a crucial issue in projector structural design.

[0003] The "Background Art" paragraph is only used to help understand the content of this invention. Therefore, the content disclosed in the "Background Art" paragraph may include some prior art that is not known to those skilled in the art. The content disclosed in the "Background Art" paragraph does not mean that the content or the problem to be solved by one or more embodiments of this invention was known or recognized by those skilled in the art before this application was filed. Summary of the Invention

[0004] This invention provides a projector and its light source module, which can effectively dissipate heat from the light source module using a heat dissipation structure within a limited configuration space.

[0005] Other objects and advantages of the present invention can be further understood from the technical features disclosed herein.

[0006] To achieve one or more of the above-mentioned objectives, or other objectives, an embodiment of the present invention provides a projector, including a light source module, a light valve, and a projection lens. The light source module provides an illumination beam and includes a base, a first color light emitting unit, a second color light emitting unit, a first heat dissipation structure, and a second heat dissipation structure. The base has a first side and a second side. The first color light emitting unit is disposed on the first side. The second color light emitting unit is disposed on the second side. The first heat dissipation structure is connected to the first color light emitting unit. The second heat dissipation structure is connected to the second color light emitting unit. The first and second heat dissipation structures are separate from each other and together define a receiving space. The light valve is located in the transmission path of the illumination beam and is used to convert the illumination beam into an image beam. The projection lens is located in the transmission path of the image beam and is used to project the image beam.

[0007] To achieve one or more of the above-mentioned objectives, or other objectives, an embodiment of the present invention provides a light source module, including a base, a first color light emitting unit, a second color light emitting unit, a first heat dissipation structure, and a second heat dissipation structure. The base has a first side surface and a second side surface. The first color light emitting unit is disposed on the first side surface. The second color light emitting unit is disposed on the second side surface. The first heat dissipation structure is connected to the first color light emitting unit. The second heat dissipation structure is connected to the second color light emitting unit. The first heat dissipation structure and the second heat dissipation structure are separate from each other but together define an accommodating space.

[0008] Based on the above, the embodiments of the present invention have at least one of the following advantages or effects. The first and second heat dissipation structures, which are separate from each other, are used to dissipate heat from the first and second color light emitting units, respectively, thereby preventing heat conduction between the first and second heat dissipation structures from affecting the normal heat dissipation of the first and / or second color light emitting units. Furthermore, the accommodating space defined by the first and second heat dissipation structures can be used to accommodate another heat dissipation structure (such as the third heat dissipation structure described above), so that this other heat dissipation structure can be used to dissipate heat from another light emitting unit (such as the third color light emitting unit described above) within a limited configuration space.

[0009] To make the above features and advantages of the present invention more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of a projector according to an embodiment of the present invention.

[0011] Figure 2 yes Figure 1 A 3D view of some components of a projector.

[0012] Figure 3 yes Figure 2 Rear view of some components of the projector.

[0013] Figure 4 yes Figure 2 A partial front view of the light source module.

[0014] Figure 5 yes Figure 2 A three-dimensional view of the connector.

[0015] Figure 6 yes Figure 2 A three-dimensional diagram of the frame.

[0016] Figure 7 This is a partial front view of the light source module of another embodiment of the present invention.

[0017] Figure 8 yes Figure 7A three-dimensional diagram of the frame.

[0018] Figure 9 yes Figure 2 A side view of the projector.

[0019] List of reference numerals

[0020] 100: Projector

[0021] 110: Light source module

[0022] 112: base body

[0023] 112a: First side view

[0024] 112b: Second side

[0025] 112C: Third side

[0026] 114A: First color light emitting unit

[0027] 114B: Second color light emitting unit

[0028] 114C: Third color light emitting unit

[0029] 115: Colloid

[0030] 116A: First heat dissipation structure

[0031] 116B: Second heat dissipation structure

[0032] 116C: Third heat dissipation structure

[0033] 117A, 117B, 117C: Screw fasteners

[0034] 118: Frame

[0035] 119: Connector

[0036] 1191: First Extension

[0037] 1192: Second Extension

[0038] 1193: Third Extension

[0039] 120: Light valve

[0040] 130: Projection lens

[0041] D: Extension direction

[0042] E1: First fixed end

[0043] E2: First Free End

[0044] E3: Second fixed end

[0045] E4: Second Free End

[0046] E5: Frontend

[0047] E6: Backend

[0048] H: Screw hole

[0049] L1: illumination beam

[0050] L2: Image Beam

[0051] OA: Optical Axis

[0052] P: Convex pillar

[0053] N1: First concave

[0054] N2: Second concave defect

[0055] S: Accommodation space. Detailed Implementation

[0056] The foregoing and other technical contents, features, and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as up, down, left, right, front, or back, are merely for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for illustrative purposes and not for limiting the present invention.

[0057] Figure 1 This is a schematic diagram of a projector according to an embodiment of the present invention. Please refer to it. Figure 1 The projector 100 in this embodiment includes a light source module 110, a light valve 120, and a projection lens 130. The light source module 110 provides an illumination beam L1. The light valve 120 is located in the transmission path of the illumination beam L1 and is used to convert the illumination beam L1 into an image beam L2. The projection lens 130 is located in the transmission path of the image beam L2 and is used to project the image beam L2.

[0058] Figure 2 yes Figure 1 A 3D view of some components of a projector. Figure 3 yes Figure 2 A rear view of some components of the projector. Please refer to... Figure 2 and Figure 3The light source module 110 of this embodiment includes a base 112, a first color light emitting unit 114A, and a second color light emitting unit 114B. The first color light emitting unit 114A and the second color light emitting unit 114B are, for example, a green light-emitting diode (LED) element and a red light-emitting diode (LED) element, respectively. The base 112 has a first side surface 112a and a second side surface 112b. The first color light emitting unit 114A is disposed on the first side surface 112a, and the second color light emitting unit 114B is disposed on the second side surface 112b. The light source module 110 further includes a first heat dissipation structure 116A and a second heat dissipation structure 116B, which are, for example, heat dissipation fin assemblies. The first heat dissipation structure 116A is connected to the first color light emitting unit 114A, and the second heat dissipation structure 116B is connected to the second color light emitting unit 114B. The first heat dissipation structure 116A and the second heat dissipation structure 116B are separate from each other, and together they define the accommodating space S. Furthermore, the light source module 110 also includes a third color light emitting unit 114C and a third heat dissipation structure 116C. The base 112 also has a third side surface 112C, with the third color light emitting unit 114C disposed on the third side surface 112C. The third heat dissipation structure 116C is connected to the third color light emitting unit 114C and is housed within the accommodating space S. In this embodiment, the third color light emitting unit 114C is, for example, a blue light emitting diode element, and the third heat dissipation structure 116C is, for example, a heat dissipation fin assembly. The third heat dissipation structure 116C is separate from the first heat dissipation structure 116A and the second heat dissipation structure 116B.

[0059] As described above, the first heat dissipation structure 116A, the second heat dissipation structure 116B, and the third heat dissipation structure 116C, which are separate from each other, are used to dissipate heat from the first color light emitting unit 114A, the second color light emitting unit 114B, and the third color light emitting unit 114C, respectively. This prevents the first heat dissipation structure 116A, the second heat dissipation structure 116B, and the third heat dissipation structure 116C from conducting heat to each other, which would affect the normal heat dissipation of the first color light emitting unit 114A, the second color light emitting unit 114B, and / or the third color light emitting unit 114C. In addition, the accommodating space S defined by the first heat dissipation structure 116A and the second heat dissipation structure 116B is used to accommodate the third heat dissipation structure 116C, so as to dissipate heat from the third color light emitting unit 114C using the third heat dissipation structure 116C in a limited configuration space.

[0060] Furthermore, since the green light-emitting diode element (first color light-emitting unit 114A) and the red light-emitting diode element (second color light-emitting unit 114B) generate a large amount of heat and the blue light-emitting diode element (third color light-emitting unit 114C) generates a small amount of heat, the first heat dissipation structure 116A and the second heat dissipation structure 116B corresponding to the green light-emitting diode element (first color light-emitting unit 114A) and the red light-emitting diode element (second color light-emitting unit 114B) can have a large volume, and the third heat dissipation structure 116C corresponding to the blue light-emitting diode element (third color light-emitting unit 114C) can have a small volume and be accommodated in the accommodating space S between the first heat dissipation structure 116A and the second heat dissipation structure 116B.

[0061] In this embodiment, the first heat dissipation structure 116A has a first recess N1 and the second heat dissipation structure 116B has a second recess N2. The first recess N1 and the second recess N2 together constitute a receiving space S for accommodating the third heat dissipation structure 116C. In other embodiments, the first heat dissipation structure 116A and the second heat dissipation structure 116B may have other suitable shapes, and the present invention is not limited thereto.

[0062] In addition, please refer to Figure 2 In this embodiment, the light source module 110 further includes a frame 118 and a connector 119, with a base 112 disposed on the frame 118. The first heat dissipation structure 116A has a first fixed end E1 and a first free end E2, and the second heat dissipation structure 116B has a second fixed end E3 and a second free end E4. The first fixed end E1 and the second fixed end E3 are fixed to the base 112, and the first free end E2 and the second free end E4 are fixed to the frame 118 by the connector 119. That is, both the first heat dissipation structure 116A and the second heat dissipation structure 116B are in the form of cantilever beams, and their first free ends E2 and second free ends E4 are fixed by the additional connector 119. By fixing the first free ends E2 and the second free ends E4 by the connector 119, insufficient structural strength can be avoided due to the cantilever beam configuration of the first heat dissipation structure 116A and the second heat dissipation structure 116B.

[0063] Figure 4 yes Figure 2 A partial front view of the light source module. Figure 5 yes Figure 2 A 3D view of the connector. Please refer to... Figure 4 and Figure 5Specifically, in this embodiment, the connector 119 is, for example, a sheet metal part and includes a first extension 1191, a second extension 1192, and a third extension 1193. The first extension 1191, the second extension 1192, and the third extension 1193 extend in different directions to form a T-shaped structure and are respectively connected to the first free end E2, the second free end E4, and the frame 118. In other embodiments, the connector 119 may have other suitable shapes, and the present invention is not limited thereto.

[0064] The light source module 110 in this embodiment further includes screw fasteners 117A, 117B, and 117C, and the connectors are screwed to the first free end E2, the second free end E4, and the frame 118 by means of screw fasteners 117A, 117B, and 117C, respectively. Figure 6 yes Figure 2 A three-dimensional view of the frame. Frame 118 can be as follows: Figure 6 The diagram shows a threaded hole H for fastening the screw fastener 117C. Additionally, the light source module 110 may include a colloid 115 (illustrated in...). Figure 4 The adhesive 115 is bonded to the third extension 1193 of the frame 118 and the connector 119 and covers the screw 117C to more securely fix the third extension 1193 to the frame 118.

[0065] The present invention does not limit the manner in which the third extension 1193 is fixed to the frame 118, and the following description is provided with reference to the accompanying drawings. Figure 7 This is a partial front view of the light source module of another embodiment of the present invention.

[0066] Figure 8 yes Figure 7 A three-dimensional diagram of the frame. Figure 7 and Figure 8 The difference between the illustrated embodiment and the foregoing embodiment is that, Figure 7 and Figure 8 The frame 118 has a protrusion P, which replaces the screw 117C of the aforementioned embodiment. The protrusion P passes through the third extension 1193 of the connector 119 to position the third extension 1193 to the frame 118. Adhesive 115 is bonded to the frame 118 and the third extension 1193 of the connector 119 and covers the protrusion P to more securely fix the third extension 1193 to the frame 118.

[0067] Figure 9 yes Figure 2 A side view of the projector. Please refer to... Figure 9 In this embodiment, the frame 118 has a front end E5 and a rear end E6, with the projection lens 130 and connector 119 both located at the front end E5. Furthermore, the first heat dissipation structure 116A and the second heat dissipation structure 116B (illustrated in...) Figure 2 From seat 112 (shown in) Figure 3 The first heat dissipation structure 116A and the second heat dissipation structure 116B extend from the base 112 toward the connector 119 in the extension direction D, which is parallel to the optical axis OA of the projection lens 130. In other embodiments not shown, the connector 119 may also be located at the rear end E6 of the frame 118, rather than at the front end E5 of the frame 118 together with the projection lens 130. Furthermore, in other embodiments not shown, the extension direction D of the first heat dissipation structure 116A and the second heat dissipation structure 116B extending from the base 112 toward the connector 119 may also be perpendicular to the optical axis OA of the projection lens 130.

[0068] In summary, the embodiments of the present invention have at least one of the following advantages or effects. The first and second heat dissipation structures, which are separate from each other, are used to dissipate heat from the first and second color light emitting units, respectively, thereby preventing heat conduction between the first and second heat dissipation structures from affecting the normal heat dissipation of the first and / or second color light emitting units. Furthermore, the accommodating space defined by the first and second heat dissipation structures can be used to accommodate a third heat dissipation structure, allowing the third heat dissipation structure to dissipate heat from the third color light emitting unit within a limited configuration space. Additionally, by fixing the first free end of the first heat dissipation structure and the second free end of the second heat dissipation structure to the connecting member, insufficient structural strength can be avoided due to the cantilever beam configuration of the first and second heat dissipation structures.

[0069] The above description is merely a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. Any simple equivalent changes and modifications made in accordance with the claims and specification of the present invention are still within the scope of the patent. Furthermore, no embodiment or claim of the present invention needs to achieve all the objectives, advantages, or features disclosed in the present invention. In addition, the abstract and title of the invention are only used to assist in patent document retrieval and are not intended to limit the scope of the invention. Moreover, the terms "first," "second," etc., mentioned in this specification or claims are only used to name elements or distinguish different embodiments or scopes, and are not used to limit the upper or lower limit of the number of elements.

Claims

1. A projector characterized by comprising: The projector includes a light source module, a light valve, and a projection lens, wherein... The light source module is used to provide an illumination beam and includes a base, a frame, a connector, a first color light emitting unit, a second color light emitting unit, a first heat dissipation structure, and a second heat dissipation structure, wherein... The seat has a first side and a second side, and the seat is disposed on the frame; The first color light emitting unit is disposed on the first side; The second color light emitting unit is disposed on the second side; The first heat dissipation structure is connected to the first color light emitting unit, and the first heat dissipation structure has a first fixed end and a first free end; and The second heat dissipation structure is connected to the second color light emitting unit. The second heat dissipation structure has a second fixed end and a second free end. The first heat dissipation structure and the second heat dissipation structure are separated from each other and jointly define the accommodating space. The first fixed end of the first heat dissipation structure and the second fixed end of the second heat dissipation structure are fixed to the base. The first free end of the first heat dissipation structure and the second free end of the second heat dissipation structure are fixed to the frame by means of the connector. The light valve is located in the transmission path of the illumination beam and is used to convert the illumination beam into an image beam; and The projection lens is located in the transmission path of the image beam and is used to project the image beam.

2. The projector of claim 1, wherein, The base has a third side surface, and the light source module includes a third color light emitting unit and a third heat dissipation structure. The third color light emitting unit is disposed on the third side surface, and the third heat dissipation structure is connected to the third color light emitting unit and housed within the receiving space.

3. The projector of claim 1, wherein, The first heat dissipation structure has a first recess and the second heat dissipation structure has a second recess, the first recess and the second recess together constitute the accommodating space.

4. The projector of claim 1, wherein, The connector includes a first extension, a second extension, and a third extension, which extend in different directions and are respectively connected to the first free end, the second free end, and the frame.

5. The projector of claim 1, wherein, The frame has a front end and a rear end, the projection lens is located at the front end, and the connector is located at either the front end or the rear end.

6. The projector of claim 1, wherein, The first heat dissipation structure and the second heat dissipation structure extend from the base body along the extending direction toward the connector, and the extending direction is parallel to or perpendicular to the optical axis of the projection lens.

7. The projector of claim 1, wherein, The light source module includes two screw fasteners, and the connector is screwed onto the first free end and the second free end by means of the two screw fasteners.

8. The projector of claim 1, wherein, The light source module includes a screw fastener, and the connector is screwed onto the frame by means of the screw fastener.

9. The projector of claim 1, wherein, The frame has protruding posts, which pass through the connectors.

10. The projector of claim 1, wherein, The light source module includes a colloid, which is bonded to the frame and the connector.

11. A light source module, characterized by The light source module includes a base, a frame, a connector, a first color light emitting unit, a second color light emitting unit, a first heat dissipation structure, and a second heat dissipation structure, wherein... The seat has a first side and a second side, and the seat is disposed on the frame; The first color light emitting unit is disposed on the first side; The second color light emitting unit is disposed on the second side; The first heat dissipation structure is connected to the first color light emitting unit, and the first heat dissipation structure has a first fixed end and a first free end; and The second heat dissipation structure is connected to the second color light emitting unit. The second heat dissipation structure has a second fixed end and a second free end. The first heat dissipation structure and the second heat dissipation structure are separated from each other and jointly define an accommodating space. The first fixed end of the first heat dissipation structure and the second fixed end of the second heat dissipation structure are fixed to the base. The first free end of the first heat dissipation structure and the second free end of the second heat dissipation structure are fixed to the frame by means of the connector.

12. The light source module according to claim 11, characterized by The base has a third side surface, and the light source module includes a third color light emitting unit and a third heat dissipation structure. The third color light emitting unit is disposed on the third side surface, and the third heat dissipation structure is connected to the third color light emitting unit and housed within the receiving space.

13. The light source module of claim 11, wherein The first heat dissipation structure has a first recess and the second heat dissipation structure has a second recess, the first recess and the second recess together constitute the accommodating space.

14. The light source module of claim 11, wherein, The connector includes a first extension, a second extension, and a third extension, which extend in different directions and are respectively connected to the first free end, the second free end, and the frame.

15. The light source module of claim 11, wherein, The light source module includes two screw fasteners, wherein the connector is screwed onto the first free end and the second free end by means of the two screw fasteners.

16. The light source module of claim 11, wherein, The light source module includes a screw fastener, wherein the connector is screwed onto the frame by means of the screw fastener.

17. The light source module of claim 11, wherein, The frame has protruding posts, which pass through the connectors.

18. The light source module of claim 11, wherein, The light source module includes a colloid, wherein the colloid is bonded to the frame and the connector.

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