CN101339355B - Light source module and optical projection device - Google Patents

Abstract

A light source module comprises a light machine, a light machine supporting seat, an air blower and an axial flow fan. The optical machine comprises a lamp wick, a reflector and a flow guide cover. At least part of the lamp wick is arranged in the reflector. The air guide cover is connected with the reflector and covers the opening of the reflector, and the air guide cover is provided with an air guide wall, a first air outlet and a first air inlet. The lamp source supporting seat is provided with an accommodating space, a second air inlet corresponding to the first air inlet, a third air inlet adjacent to the second air inlet, a fourth air inlet adjacent to the third air inlet, a second air outlet corresponding to the first air outlet and a third air outlet adjacent to the second air outlet. The lamp source is arranged in the accommodating space. The blower is arranged at the second air inlet and is positioned outside the accommodating space. The axial flow fan is arranged at the position close to the third air inlet and the fourth air inlet and is positioned outside the accommodating space.

Description

Light source module and optical projection device

technical field

The invention relates to a light source module, and in particular to a light source module applied to an optical projection device and an optical projection device with the light source module.

Background technique

The existing optical projection device includes a light source module, a light valve and a projection lens. The reflector of the light source module can make the light emitted by the lampwick in the reflector form an illuminating light beam. The light valve is located on the transmission path of the illumination beam and is suitable for converting the illumination beam into an image light beam. The projection lens is located on the transmission path of the image beam and is suitable for projecting the image beam onto a screen located outside the optical projection device.

When the wick of the light source module emits light, the wick will generate exhaust heat to increase the temperature inside and outside the reflector. In order to maintain the normal operation of the light source module, the blower (blower) and the axial fan (axial fan) of the light source module generate the first air current (air current) and the second air flow respectively to transfer the waste heat inside the reflector and the waste heat outside the reflector The air is transmitted to the outside of the light source module through the first air outlet (outlet) and the second air outlet of the light source module.

Since the temperature inside the reflection cover is relatively high, the temperature of the first airflow flowing through the reflection cover and exiting from the first air outlet is relatively high. However, when the first airflow and the second airflow leave the light source module through the first air outlet and the second air outlet respectively, the first airflow with higher temperature and the second airflow with lower temperature do not merge effectively, so that the light source module The temperature of the first air outlet and its neighbors is too high.

Contents of the invention

The invention provides a light source module, the temperature of each air outlet of the light source module is relatively low when the light source module is in operation.

The invention provides an optical projection device. When the light source module is in operation, the temperature of each air outlet of the light source module is relatively low.

An embodiment of the present invention provides a light source module, which includes a lamp, a lamp holder, a blower, and an axial fan. The light source includes a wick, a reflector and a guide cap. At least part of the wick is disposed in the reflector, and the reflector is suitable for making the light emitted by the wick form an illumination beam. The reflector has a first opening through which the illuminating light beam passes. The guide cover is connected to the reflection cover and covers the first opening of the reflector cover, and the guide cover has a guide wall, a first air outlet, and a first air inlet (inlet).

The light source support base has accommodating space, a second air inlet corresponding to the first air inlet, a third air inlet adjacent to the second air inlet, a fourth air inlet adjacent to the third air inlet, and a fourth air inlet corresponding to the first air outlet. The second air outlet of the air outlet and the third air outlet adjacent to the second air outlet. The light source is arranged in the accommodation space.

The blower is arranged at the second air inlet and is located outside the accommodating space. The blower is adapted to provide the first airflow, the first airflow enters the interior of the reflector through the second air inlet and the first air inlet, and leaves the interior of the reflector through the first air outlet and the second air outlet.

The axial flow fan is arranged adjacent to the third air inlet and the fourth air inlet and is located outside the accommodating space. The axial fan is adapted to provide the second airflow entering the accommodating space through the fourth air inlet and the third airflow entering the accommodating space through the third air inlet. The second airflow flows through the periphery of the reflector and leaves the accommodating space through the third air outlet. The third airflow flows along the guide wall and leaves the accommodating space through the second air outlet.

Another embodiment of the present invention provides an optical projection device, which includes a light source module, a light valve, and a projection lens. The light source module includes a light source, a support seat for the light source, a blower and an axial fan. The light source includes a wick, a reflector and a shroud. At least part of the wick is disposed in the reflector, and the reflector is suitable for making the light emitted by the wick form an illumination beam. The reflector has a first opening through which the illuminating light beam passes. The wind deflector is connected to the reflection cover and covers the first opening of the reflection cover, and the wind deflector has a deflector wall, a first air outlet and a first air inlet.

The light source support base has accommodating space, a second air inlet corresponding to the first air inlet, a third air inlet adjacent to the second air inlet, a fourth air inlet adjacent to the third air inlet, and a fourth air inlet corresponding to the first air outlet. The second air outlet of the air outlet and the third air outlet adjacent to the second air outlet. The light source is arranged in the accommodation space.

The blower is arranged at the second air inlet and is located outside the accommodating space. The blower is adapted to provide the first airflow, the first airflow enters the interior of the reflector through the second air inlet and the first air inlet, and leaves the interior of the reflector through the first air outlet and the second air outlet.

The axial flow fan is arranged adjacent to the third air inlet and the fourth air inlet and is located outside the accommodating space. The axial fan is adapted to provide the second airflow entering the accommodating space through the fourth air inlet and the third airflow entering the accommodating space through the third air inlet. The second airflow flows through the periphery of the reflector and leaves the accommodating space through the third air outlet. The third airflow flows along the guide wall and leaves the accommodating space through the second air outlet.

The light valve is arranged on the transmission path of the illumination beam, and the light valve is suitable for converting the illumination beam into an image beam. The projection lens is arranged on the transmission path of the image beam, and the projection device is suitable for projecting the image beam onto the screen.

The first airflow that flows through the interior of the reflection cover and has a higher temperature and the third airflow that flows through the guide wall and has a lower temperature can first merge, and then the first airflow and the third airflow flow through the periphery of the reflection cover and have a higher temperature. Low secondary airflow confluence. Therefore, compared with the prior art, the first airflow, the second airflow and the third airflow leaving the light source module can effectively merge, thereby reducing the temperature of each air outlet of the light source module.

In addition, since the blower and the axial fan can generate multiple airflows in different directions through the multiple air inlets of the lamp support base, these airflows in different directions can effectively take away the waste heat generated during the operation of the lamp to the external environment. Therefore, the temperature of each component of the light source of the light source module and the temperature of the light source supporting seat can be effectively reduced.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, preferred embodiments will be described below in detail with reference to the accompanying drawings.

Description of drawings

FIG. 1 is a schematic diagram of an optical projection device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a light source module of the optical projection device in FIG. 1 .

FIG. 3 is a schematic perspective view of a combination of light sources of the light source module in FIG. 2 .

FIG. 4 is a three-dimensional assembly schematic view of the light source support base of the light source module in FIG. 2 .

FIG. 5 is a schematic perspective view of the combination of the light sources of the light source module in FIG. 2 arranged in the light source support base.

FIG. 6 is a schematic perspective view of the combination of the light source module in FIG. 2 .

FIG. 7 is a schematic front view of the light source module in FIG. 6 .

simple notation

200: Optical projection device

210: Light source module

212: light source

212a: Wick

212b: reflector

212c: Shroud

214: Light source support seat

214a, 214b, 214c: seat body

216: Blower

216a: Blower deflector

216b: diversion port

218: Axial fan

219: deflector

220: light valve

230: projection lens

C1, C2, C3: Airflow

H, P1: opening

I1, I2, I3, I4: air inlet

L1: Lighting beam

L2: image beam

N: screen

O1, O2, O3: air outlet

P2: Light-transmitting parts

S: storage space

W: deflector wall

Detailed ways

The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only referring to the directions of the drawings. Accordingly, the directional terms are used to illustrate and not to limit the invention.

Please refer to FIG. 1 , which shows a schematic diagram of an optical projection device according to an embodiment of the present invention. The optical projection device 200 of this embodiment includes a light source module 210 , a light valve 220 and a projection lens 230 . The light source module 210 is adapted to emit an illumination light beam L1. The light valve 220 is disposed on the transmission path of the illumination beam L1, and the light valve 220 is adapted to convert the illumination beam L1 into an image beam L2. The projection lens 230 is disposed on the transmission path of the image beam L2, and the projection device 230 is suitable for projecting the image beam L2 onto the screen N.

FIG. 2 is an exploded perspective view of a light source module of the optical projection device in FIG. 1 . FIG. 3 is a schematic perspective view of a combination of light sources of the light source module in FIG. 2 . Please refer to FIG. 2 and FIG. 3 , the light source module 210 includes a light source 212 , a light source support base 214 , a blower 216 and an axial fan 218 . The light source 212 includes a wick 212a (see FIG. 2 ), a reflector 212b and a flow guide 212c. At least part of the wick 212a is disposed in the reflector 212b, and the reflector 212b is suitable for making the light emitted by the wick 212a form an illumination beam L1. The reflector has an opening H through which the illumination beam L1 passes. The air guide cover 212c is connected to the reflection cover 212b and covers the opening H of the reflection cover 212b, and the air guide cover 212c has a guide wall W, a first air outlet O1 and a first air inlet I1. In this embodiment, the connection of the shroud 212c to the reflection cover 212b can be achieved by locking with screws (not shown). In the present invention, the so-called air guide cover 212c covers the opening H of the reflection cover 212b or similar terms, which means that the air guide cover 212c is located outside the opening H of the reflection cover 212b and covers part of the end face of the opening H of the reflection cover 212b, as shown in Figure 3 As shown, instead of directing the flow shield 212c to completely cover the opening H of the reflector 212b.

In this embodiment, the air guiding cover 212c may further have an opening P1 and a light-transmitting member P2. The opening P1 is located on the transmission path of the illumination light beam L1, and the light-transmitting member P2 can be a filter, which is disposed at the opening P1. Therefore, after the illumination beam L1 passes through the light-transmitting member P2 such as a filter, light of certain frequencies (such as infrared light or ultraviolet light) of the illumination beam L1 can be filtered out.

4 is a schematic perspective view of the combination of the light source supporting seat of the light source module in FIG. 2 , and FIG. 5 is a perspective combination schematic view of the light source of the light source module in FIG. 2 disposed in the light source support base. For the convenience of illustration, FIG. 5 omits to show part of the light source supporting base 214 . Please refer to FIG. 2 , FIG. 4 and FIG. 5 , the light source support base 214 has an accommodating space S, a second air inlet I2 corresponding to the first air inlet I1, a third air inlet I3 adjacent to the second air inlet I2, The fourth air inlet I4 adjacent to the third air inlet I3, the second air outlet O2 corresponding to the first air outlet O1, and the third air outlet O3 adjacent to the second air outlet O2.

In this embodiment, the light source support base 214 includes a first holder portion 214a, a second holder portion 214b and a third holder portion 214c. The second air inlet I2, the third air inlet I3, the fourth air inlet I4, the second air outlet O2, and the third air outlet O3 can all be located on the second seat 214b. The first base body 214a, the second base body 214b and the third base body 214c are assembled to form an accommodating space S, and the light source 212 is disposed in the accommodating space S. In detail, the assembly process of the light source 212 disposed in the light source support seat 214 of this embodiment is illustrated as follows. The light source 212 can be fixed on the third base body 214c first, and then the first base body 214a and the second base body 214b can be assembled by locking with screws (not shown). Finally, the light source 212 and the third base body 214c as well as the first base body 214a and the second base body 214b are assembled together to complete.

In this embodiment, after the light source 212 and the light source supporting seat 214 are assembled, part of the first seat body 214a may be located above the light source 212 , and part of the third seat body 214c may be located below the light source 212 . An end of the first seat 214a away from the wind deflector 212c can be assembled with an end of the third base 214c away from the wind deflector 212c. Part of the second seat body 214b can be located in front of and on both sides of the light source 212 , and part of the second seat body 214b can be located above the light source 212 . It should be noted here that the light source support base 214 can have different shapes and assembly methods according to the designer's requirements. Here, the light source support base 214 of this embodiment is only used as an example rather than limiting the present invention.

FIG. 6 is a schematic perspective view of the combination of the light source module in FIG. 2 . For convenience of illustration, FIG. 6 omits part of the light source supporting base 214 . Please refer to FIG. 2 , FIG. 5 and FIG. 6 , the blower 216 is disposed at the second air inlet I2 and outside the accommodating space S. As shown in FIG. Specifically, the blower 216 can be disposed at the second air inlet I2 through a blower duct 216a, and part of the blower duct 216a passes through the second air inlet I2. The air blower deflector 216a may have a conduction opening (duct hole) 216b, and the conduction opening 216b may closely correspond to the first air inlet I1. In addition, the axial fan 218 is disposed adjacent to the third air inlet I3 and the fourth air inlet I4 and outside the accommodating space S. As shown in FIG. In this embodiment, the light source module 210 further includes a deflector 219 , and the deflector 219 is disposed at the second air outlet O2 and outside the accommodating space S. As shown in FIG. In other embodiments, the axial fan 218 may be disposed adjacent to the third air inlet I3 and the fourth air inlet I4 and outside the accommodating space S. As shown in FIG.

FIG. 7 is a schematic front view of the light source module in FIG. 6 . For the convenience of illustration, FIG. 7 omits to show part of the light source support base 214 , the blower 216 and the axial fan 218 . Referring to FIG. 2 , FIG. 5 and FIG. 7 , the blower 216 is adapted to provide the first air flow C1 . The first airflow C1 enters the interior of the reflector 212b (see FIG. 2 ) through the second air inlet I2 and the first air inlet I1, and exits the interior of the reflector 212b through the first air outlet O1 and the second air outlet O2. In detail, in this embodiment, the first airflow C1 can enter the interior of the reflection cover 212b through the air blower guide 216a. Since the air guide port 216b and the first air inlet I1 can closely correspond to each other, the first airflow C1 will not leak from the junction of the air guide port 216b and the first air inlet I1.

In addition, the axial fan 218 is adapted to provide the second airflow C2 entering the accommodating space S through the fourth air inlet I4 and the third airflow C3 entering the accommodating space S through the third air inlet I3. The second airflow C2 flows through the periphery of the reflection cover 212b (see FIG. 2 ) and leaves the accommodating space S through the third air outlet O3. The third airflow C3 flows along the guide wall W of the guide cover 212c, and leaves the accommodating space S through the second air outlet O2. In this embodiment, as far as the relative position shown in FIG. 7 is concerned, when the third air flow C3 flows along the flow guide wall W, the third air flow C3 will be split at the opposite upper and lower sides of the air guide cover 212c.

The temperature of the first airflow C1 flowing through the interior of the reflector 212b is generally higher than the temperature of the third airflow C3 flowing through the flow guide wall W of the flow guide cover 212c, and the third airflow C3 flowing through the flow guide wall W of the flow guide cover 212c The temperature of C3 is generally higher than the temperature of the second airflow C2 flowing through the periphery of the reflector 212b. Since the first airflow C1 flowing through the interior of the reflector 212b with a higher temperature and the third airflow C3 with a lower temperature flowing through the guide wall W can first merge at the second air outlet O2, the temperature of the first airflow C1 can be effectively reduced. In addition, because the first airflow C1 and the third airflow C3 flow through the deflector 219 and then merge with the lower-temperature second airflow C2 that flows through the periphery of the reflector 212b, the first airflow C1 and the third airflow C3 The temperature can also be effectively reduced.

It should be noted here that the function of the air guide 219 in this embodiment is to allow the first air flow C1 , the third air flow C3 and the second air flow C2 to merge more efficiently. However, the designer may omit the configuration of the air guide 219 according to design requirements (such as space considerations), and design the second air outlet O2 to face the flow direction of the second airflow C2 leaving the light source module 210 from the third air outlet O3. , but the above is not shown in the drawing.

To sum up, the light source module of the embodiment of the present invention and the optical projection device using it have at least one or some or all of the following advantages:

1. The first airflow with higher temperature flowing through the interior of the reflector and the third airflow with lower temperature flowing through the deflector wall can first merge, and then the first airflow and the third airflow can flow through the periphery of the reflector and The cooler second gas stream merges. Therefore, compared with the prior art, the first air flow, the second air flow, and the third air flow leaving the light source module can effectively merge to reduce the temperature of each air outlet of the light source module.

2. Since the blower and the axial fan can generate multiple airflows with different flow directions through the multiple air inlets of the light source support base, these airflows with different flow directions can effectively take away the waste heat generated during the operation of the light source to the external environment. Therefore, the temperature of each component of the light source of the light source module and the temperature of the light source supporting seat can be effectively reduced.

3. Since the third air flow will be diverted on the upper and lower sides of the air guide cover, the waste heat generated by the heated air guide cover can be effectively carried away by the third air flow, and the third air flow can be used for the air guide cover and the light source The heat insulation intermediary between the support bases reduces the temperature of the bases of the light source support base located on the upper and lower sides of the air deflector.

4. Since the third airflow flows toward the second air outlet, the first airflow that enters the interior of the reflector and exits through the first air outlet can flow along the direction of the third airflow and exit through the second air outlet. Therefore, the first air flow is less likely to flow backward.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention, and any person skilled in the art may make some changes and modifications without departing from the spirit and scope of the present invention. , so the protection scope of the present invention shall prevail as defined by the appended claims. In addition, any embodiment or claim of the present invention need not achieve all the objects or advantages or features disclosed in the present invention. In addition, the abstract and the title are only used to assist the search of patent documents, and are not used to limit the scope of rights of the present invention.

Claims (10)

1. A light source module, comprising: Light sources, including: wick; a reflector, wherein at least part of the wick is disposed in the reflector, and the reflector is suitable for forming an illumination beam from the light emitted by the wick, the reflector has a first opening through which the illumination beam passes; and The air guide cover is connected to the reflection cover and covers the first opening of the reflection cover, wherein the air guide cover has a guide wall, a first air outlet, a first air inlet, a second opening and a light-transmitting member, the second The opening is located on the transmission path of the illumination beam, and the light-transmitting member is arranged at the second opening; The light source supporting base has an accommodating space, a second air inlet corresponding to the first air inlet, a third air inlet adjacent to the second air inlet, a fourth air inlet adjacent to the third air inlet, a second air outlet corresponding to the first air outlet and a third air outlet adjacent to the second air outlet, wherein the light source is arranged in the accommodating space; The blower is arranged at the second air inlet and is located outside the accommodating space, wherein the blower is suitable for providing a first airflow, and the first airflow enters the reflector through the second air inlet and the first air inlet inside, and leave the interior of the reflector through the first air outlet and the second air outlet; and An axial flow fan is arranged adjacent to the third air inlet and the fourth air inlet and outside the accommodating space, wherein the axial flow fan is adapted to provide a second air flow entering the accommodating space through the fourth air inlet. The second airflow and the third airflow that enters the accommodating space through the third air inlet, the second airflow flows through the periphery of the reflector and leaves the accommodating space through the third air outlet, and the third airflow The airflow flows along the guide wall and leaves the accommodating space through the second air outlet. 2. The light source module according to claim 1, further comprising a first air guide, disposed at the second air outlet and outside the accommodating space, wherein the first airflow and the third airflow pass through the first airflow A deflector further merges with the second airflow. 3. The light source module as claimed in claim 1, wherein the light-transmitting member is a filter. 4. The light source module according to claim 1, further comprising a second air guide disposed at the second air inlet, wherein part of the second air guide passes through the second air inlet, and the second air guide The flow element has a guide port, and the guide port is connected to the first air inlet. 5. The light source module as claimed in claim 1, wherein the axial fan is disposed adjacent to the third air inlet and the fourth air inlet and is located outside the accommodating space. 6. An optical projection device, comprising: Light source module, including: Light sources, including: wick; a reflector, wherein at least part of the wick is disposed in the reflector, and the reflector is suitable for forming an illumination beam from the light emitted by the wick, the reflector has a first opening through which the illumination beam passes; and The air guide cover is connected to the reflection cover and covers the first opening of the reflection cover, wherein the air guide cover has a guide wall, a first air outlet, a first air inlet, a second opening and a light-transmitting member, the second The opening is located on the transmission path of the illumination beam, and the light-transmitting member is arranged at the second opening; The light source supporting seat has an accommodating space, a second air inlet corresponding to the first air inlet, a third air inlet adjacent to the second air inlet, a fourth air inlet adjacent to the third air inlet, and a corresponding a second air outlet at the first air outlet and a third air outlet adjacent to the second air outlet, wherein the light source is disposed in the accommodating space; The blower is arranged at the second air inlet and is located outside the accommodating space, wherein the blower is suitable for providing a first airflow, and the first airflow enters the reflector through the second air inlet and the first air inlet inside, and leave the interior of the reflector through the first air outlet and the second air outlet; and An axial flow fan is arranged adjacent to the third air inlet and the fourth air inlet and outside the accommodating space, wherein the axial flow fan is adapted to provide a second air flow entering the accommodating space through the fourth air inlet. The second airflow and the third airflow that enters the accommodating space through the third air inlet, the second airflow flows through the periphery of the reflector and leaves the accommodating space through the third air outlet, and the third airflow The airflow flows along the guide wall and leaves the accommodating space through the second air outlet; a light valve disposed on the delivery path of the illumination beam, wherein the light valve is adapted to convert the illumination beam into an image beam; and The projection lens is arranged on the transmission path of the image beam, wherein the projection device is suitable for projecting the image beam onto the screen. 7. The optical projection device as claimed in claim 6, wherein the light source module further comprises a first air guide disposed at the second air outlet and outside the accommodating space, wherein the first air flow and the third air flow The airflow flows through the first air guide and then merges with the second airflow. 8. The optical projection device as claimed in claim 6, wherein the light-transmitting member is a filter. 9. The light source module according to claim 6, further comprising a second air guide disposed at the second air inlet, wherein part of the second air guide passes through the second air inlet, and the second air guide The component has a guide port, and the guide port is connected to the first air inlet. 10. The optical projection device as claimed in claim 6, wherein the axial fan is disposed adjacent to the third air inlet and the fourth air inlet and is located outside the accommodating space.

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