TWI386751B - Light source module and projector using same - Google Patents

Description

Light source module and projector using the same

The invention relates to a light source module and a projector using the same.

With the vigorous development of optoelectronic technology, projector technology is also constantly developing, and the heat dissipation problem of the projector has always been a problem. The heat source of the projector is mainly a light source and a driving circuit. How to effectively take away the heat generated by these heat sources has become a major issue. At present, the projector generally enhances heat dissipation by increasing the fan speed or using a high-power fan, and the speed and power of the fan cannot be increased without limitation, so the heat dissipation effect is not very good.

In view of the above, it is necessary to provide a light source module with high heat dissipation efficiency and a projector using the same.

a light source module comprising a red light source, a green light source, a blue light source, a first heat sink and a second heat sink, wherein the green light source is attached to the first heat sink, the red light The light source and the blue light source are respectively attached to the second heat dissipating device, and the first heat dissipating device and the second heat dissipating device are separated from each other.

A projector includes a housing, an optical system, a circuit system, and a lens. The optical system, the circuit system and the lens are received in the casing, and the optical system comprises a light source module, wherein the light source module comprises a red light source, a green light source, a blue light source, and a first heat dissipation The device and the second heat sink, the green light source is attached to the first heat sink, and the red light source and the blue light source are respectively attached to the second heat sink, the first heat sink and the The second heat sink is separated from each other .

The light source module provided by the present invention and the green light source in the projector using the light source module are located on the first heat sink, and the red light source and the blue light source are located on the second heat sink, and the first heat sink and the second heat sink The devices are separated from each other, so that the heat source of the light source is divided into two groups for heat dissipation, and the heat is dissipated according to the heat generated by the light source, thereby improving the heat dissipation efficiency of the projector.

The invention will be further described in detail below with reference to the accompanying drawings.

Embodiment 1

1 is a schematic structural view of a projector 1 in a first embodiment, which includes a casing 10, an optical system 20, a circuit system 30, and a lens 40. The optical system 20 , the circuit system 30 , and the lens 40 are housed in the casing 10 .

The casing 10 includes a first sidewall 101, a second sidewall 102, a third sidewall 103, and a fourth sidewall 104. The first side wall 101 and the third side wall 103 are opposite to each other. The second side wall 102 and the fourth side wall 104 are opposite to each other. The second side wall 102 and the fourth side wall 104 respectively adjoin the first side wall 101 and the third side wall 103. The first side wall 101 is provided with a first exhaust fan 11 and a second exhaust fan 12. A blower 17 is disposed on the second side wall 102, and the blower 17 is blasted in a direction from the third side wall 103 to the first side wall 101. A lens hole 13 and an intake fan 14 are sequentially disposed on the fourth side wall 104 in a direction from the third side wall 103 to the first side wall 101. The third side wall 103 is provided with a first vent 15 at a position opposite to the first exhaust fan 11, and a second vent 16 is provided at a position corresponding to the second exhaust fan 12.

The optical system 20 includes a light source module 21 and a modulation system 22. The light source module 21 can emit light, and the modulation system 22 selectively modulates the light emitted by the light source module 21, and selects the modulated light to enter the lens 40. The optical system 20 is disposed opposite the first exhaust fan 11. In the casing 10, the modulation system 22 and the light source module 21 are sequentially disposed along the third sidewall 103 to the first sidewall 101. The light source module 21 includes three LEDs (ie, light emitting diodes) light source, a first heat sink 214, and a second heat sink 215. The three LED light sources, the first heat sink 214 and the second heat sink 215 are located between the blower 17 and the first fan 11 . The three LED light sources are respectively an R (red) light source 211, a G (green) light source 212, and a B (blue) light source 213. In this embodiment, the G light source 212, the B light source 213, and the R light source 211 are along the first The directions of the side walls 101 to the third side walls 103 are sequentially arranged, and the light directions of the R light source 211, the G light source 212, and the B light source 213 are perpendicular to the light entering direction of the modulation system 22. In the projector 1, the G light source 212 has a larger luminous power than the R light source 211 and the B light source 213, and the G light source 212 generates a large amount of heat. Therefore, the LED light source is divided into two groups to be disconnected for heat dissipation, thereby improving heat dissipation efficiency. Therefore, in the embodiment, the G light source 212 is located on the first heat sink 214 , and the R light source 211 and the B light source 213 are both located on the second heat sink 215 . The first heat sink 214 and the second heat sink 215 are separated from each other without contact. The blower 17 blows air toward the first heat sink 214 and the second heat sink 215, so that three LED light sources can be cooled. A passage for dissipating heat between the light source module 21 and the modulation system 22 is formed between the first vent 15 on the third side wall 103 and the first exhaust fan 11, and outside air enters from the first vent 15, and then Flowing through the modulation system 22 and the light source module 21, cooling the modulation system 22 and the light source module 21, and finally The heat is discharged from the outside of the casing 10 by the first exhaust fan 11. In this embodiment, the first heat sink 214 and the second heat sink 215 may be heat sinks.

The lens 40 is disposed in the lens hole 13 , and the optical axis of the lens 40 is parallel to the third sidewall 103 . The light source module 21, the modulation system 22, and the lens 40 are arranged in an "L"-like manner.

The circuitry 30 is for driving control of the optical system 20 between the lens 40 and the second exhaust fan 12 and is disposed opposite the second exhaust fan 12. A passage for dissipating heat between the lens 40 and the circuit system 30 is formed between the second vent 16 and the second exhaust fan 12, and external air enters through the second vent 16 and then flows through the The lens 40 and the circuit system 30 cool the lens 40 and the circuit system 30, and finally the heat is discharged from the casing 10 by the second exhaust fan 12. To further enhance the heat dissipation effect of the circuit system 30, an intake fan 14 is further disposed on the fourth side wall 104 adjacent to the circuit system 30. The intake fan 14 draws in air to further cool the circuit system 30. In the present embodiment, the circuit system 30 is a projector light source driving circuit board. The circuitry 30 can be disposed vertically or parallel to the fourth sidewall 104.

Embodiment 2

2 is a schematic structural view of the projector 2 in the second embodiment. The structure of the projector 2 is basically similar to that of the first embodiment, but the light source module has different arrangement modes.

In the light source module 21 of the present embodiment, the B light source 213 and the R light source 211 are arranged in the order from the first side wall 101 to the third side wall 103, and R The light source 211 and the B light source 213 are perpendicular to the light entering direction of the modulation system 22, and the light emitting direction of the G light source 212 is perpendicular to the light emitting directions of the R light source 211 and the B light source 213, and is "L" with the B light source 213 and the G light source 212. Type arrangement.

The light source module provided by the present invention and the green light source in the projector using the light source module are located on the first heat sink, and the red light source and the blue light source are located on the second heat sink, and the first heat sink and the second heat sink The devices are separated from each other, so that the heat source of the light source is divided into two groups for heat dissipation, and the heat is dissipated according to the heat generated by the light source, thereby improving the heat dissipation efficiency of the projector.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the above description is only the preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and equivalent modifications or variations made by those skilled in the art in light of the spirit of the present invention are It should be covered by the following patent application.

1‧‧‧Projector

10‧‧‧Chassis

20‧‧‧Optical system

30‧‧‧Circuit system

11‧‧‧First exhaust fan

12‧‧‧Second exhaust fan

13‧‧‧ lens hole

14‧‧‧Intake fan

15‧‧‧First ventilation hole

16‧‧‧second vent

21‧‧‧Light source system

22‧‧‧Modulation system

211‧‧‧R light source

212‧‧‧G light source

213‧‧‧B light source

214‧‧‧First heat sink

215‧‧‧Second heat sink

40‧‧‧ lens

101‧‧‧First side wall

102‧‧‧second side wall

103‧‧‧ third side wall

104‧‧‧ fourth side wall

17‧‧‧Blowers

1 is a schematic structural view of a projector according to a first embodiment of the present invention; and FIG. 2 is a schematic structural view of a projector according to a second embodiment of the present invention.

1‧‧‧Projector

10‧‧‧Chassis

20‧‧‧Optical system

30‧‧‧Circuit system

11‧‧‧First exhaust fan

12‧‧‧Second exhaust fan

13‧‧‧ lens hole

14‧‧‧Intake fan

15‧‧‧First ventilation hole

16‧‧‧second vent

21‧‧‧Light source system

22‧‧‧Modulation system

211‧‧‧R light source

212‧‧‧G light source

213‧‧‧B light source

214‧‧‧First heat sink

215‧‧‧Second heat sink

40‧‧‧ lens

101‧‧‧First side wall

102‧‧‧second side wall

103‧‧‧ third side wall

104‧‧‧ fourth side wall

17‧‧‧Blowers

Claims (14)

a light source module comprising a red light source, a green light source, a blue light source, a first heat sink and a second heat sink, wherein the green light source is attached to the first heat sink, the red light The light source and the blue light source are respectively attached to the second heat dissipating device, and the first heat dissipating device and the second heat dissipating device are separated from each other without contact. The light source module of claim 1, wherein the red light source is a red light emitting diode, the green light source is a green light emitting diode, and the blue light source is a blue light emitting diode. The light source module of claim 1, wherein the first heat sink and the second heat sink are heat sinks. A projector comprising a casing, an optical system, a circuit system and a lens, wherein the optical system, the circuit system and the lens are housed in the casing, the optical system comprising a light source module, wherein the light source The module includes a red light source, a green light source, a blue light source, a first heat sink and a second heat sink, wherein the green light source is attached to the first heat sink, and the red light source and the blue light source respectively The second heat dissipating device is attached, and the first heat dissipating device and the second heat dissipating device are separated from each other without contact. The projector of claim 4, wherein: the casing comprises a first side wall, a second side wall, a third side wall and a fourth side wall, wherein the first side wall is opposite to the third side wall, and the second side wall is The second side wall and the fourth side wall respectively adjoin the first side wall and the third side wall. The projector of claim 5, wherein: the second side wall is provided with a blower, and the blower blasts in a direction from the third side wall to the first side wall, the red light source, Green light source, blue light source, The first heat sink and the second heat sink are located between the blower and the first exhaust fan. The projector of claim 5, wherein: in a direction from the third side wall to the first side wall, the fourth side wall is sequentially provided with a lens hole and an intake fan, and the lens is received in the lens The lens aperture is inside and the optical axis of the lens is parallel to the third sidewall. The projector of claim 5, wherein: the first side wall is provided with a first exhaust fan and a second exhaust fan, and the optical system is disposed opposite to the first exhaust fan. . The projector of claim 8, wherein: the circuit system is located between the lens and the second exhaust fan, and is disposed opposite to the second exhaust fan, the circuit system Used to drive control of the optical system. The projector of claim 8, wherein: the third side wall is provided with a first vent at a position opposite to the first exhaust fan, and is disposed at a position corresponding to the second exhaust fan. Second vent. The projector of claim 4, wherein: the optical system further comprises a modulation system for selectively modulating light generated by the light source module. The modulation system and the light source module are sequentially disposed along the third sidewall to the first sidewall direction. The projector of claim 4, wherein: the green light source, the blue light source, and the red light source are sequentially arranged in a direction from the first side wall to the third side wall, and the light emitting direction is perpendicular to the modulation. The direction of the light entering the system. The projector of claim 4, wherein: the blue light source and the red light source are sequentially arranged in a direction from the first side wall to the third side wall. And the light exiting direction is perpendicular to the light entering direction of the modulation system, and the light emitting direction of the green light source is perpendicular to the light emitting direction of the blue light source and the red light source, and is arranged in an “L” shape with the blue light source and the red light source. The projector of claim 4, wherein: the circuit system is a projector light source driving circuit board, and the circuit system can be disposed vertically or in parallel with the fourth side wall.