CN100589026C - Optical projection apparatus - Google Patents
Optical projection apparatus Download PDFInfo
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- CN100589026C CN100589026C CN200610090175A CN200610090175A CN100589026C CN 100589026 C CN100589026 C CN 100589026C CN 200610090175 A CN200610090175 A CN 200610090175A CN 200610090175 A CN200610090175 A CN 200610090175A CN 100589026 C CN100589026 C CN 100589026C
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- control module
- device body
- sensing module
- heat
- projection apparatus
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Abstract
The invention is an optical projector, comprising main body and sensing module, where the main body has control unit, radiation unit, projection lens and at least an airflow orifice, where the sensingmodule is arranged in the main body and the sensing module and the radiation unit are connected with the control unit; hot airflow in the main body exchanges with cold airflow outside the main body;when the sensing module detects object enters into a preset range around the airflow orifice, the sensing module will send signal to the control unit to make the control unit start up overheat mechanism.
Description
Technical field
The invention relates to a kind of optical projection apparatus, and particularly have the sensing module and whether stopped with the air intake vent of pick-up unit or air outlet and reduce heat radiation function, and can start the optical projection apparatus of anti-overheated mechanism by foreign object about a kind of.
Background technology
No matter be on commercial affairs or leisure purposes, the purposes of projector mainly be with the image enlarging projection to screen.Projector's main composition element traditionally is projection lens, light engine and bulb etc.The light of lamps emission is by behind the light engine, with image by projection lens projects to screen.When using projector, it is luminous that bulb must continue, and its luminous intensity must be enough to amplified images is projected on the screen.Under the luminance that bulb continues, its temperature can increase always.Simultaneously, when light arrives light engine by lamps emission, the temperature of light engine is increased, so projector's temperature inside can constantly rise.When the temperature of projector was too high, its inner element was very easy to damage, so the heat dissipation design of projector is very important.
The heat dissipation design of projector is that heat abstractor is set in projector traditionally, and this heat abstractor mostly is radiator fan, and is designed into air port and air outlet on the casing of projector.Running by radiator fan, the gas that imports under the normal temperature via air intake vent enters in the projector, with the element in the cooling projector, by air outlet hot gas is derived again, form effective gas heat radiation circulation, make the projection function remain on normal operation under the not overheated state.Because bulb is main temperature source, radiator fan and air outlet mainly are configured in the bulb periphery, and air intake vent then is arranged on other component periphery in the projector.Yet in the process of operation projector, the user is normal casual with air outlet or air intake vent obstruction.Cause radiator fan effectively to derive projector, make projector produce overheated situation with the gas importing projector of cooling or with overheated gas.
Summary of the invention
In view of this, purpose of the present invention just provides a kind of optical projection apparatus, it adds the sensing module in device, whether the sensing module is detected at the air outlet of device or air intake vent is stopped by foreign object and reduces the heat dissipation of device, and can start anti-overheated mechanism simultaneously with the radiating effect in the stiffening device, or remind the user that the foreign object of air outlet or air intake vent is removed, make the gas circulation radiating mode normal operation of device.
According to purpose of the present invention, a kind of optical projection apparatus has been proposed, it comprises device body and sensing module.Device body has control module, heat-sink unit, projection lens and at least one air-flow port.The sensing module is arranged in the device body, and sensing module and heat-sink unit electrically connect with control module respectively.Projection lens is in order to the projection image.The thermal current of device body inside exchanges with the cold airflow of device body outside by the air-flow port.When the sensing module detected object and enters in the preset range around the air-flow port, the sensing module can send signal to control module, makes control module start anti-overheated mechanism.
According to purpose of the present invention, a kind of optical projection apparatus has also been proposed, it comprises device body and sensing module.Device body has control module, heat-sink unit and projection lens.The sensing module is arranged in the device body and contiguous heat-sink unit, and the sensing module also has sensing range.Heat-sink unit and sensing apparatus electrically connect with control module respectively.Projection lens is in order to the projection image.The state that detects in the sensing range when the sensing module changes, and the sensing module can transmit first signal to control module, control module then transmit again second signal to heat-sink unit to strengthen its radiating effect.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below:
Description of drawings
Fig. 1 is the synoptic diagram according to the optical projection apparatus of the preferred embodiment of the present invention.
Fig. 2 is the calcspar of the element relation of Fig. 1 optical projection apparatus.
Embodiment
Please refer to Fig. 1, it is the synoptic diagram according to the optical projection apparatus of the preferred embodiment of the present invention.As shown in Figure 1, optical projection apparatus 1 comprises device body 10 and sensing module 11.Device body 10 has control module 12, heat-sink unit 13, projection lens 14 and at least one air-flow port 15.Wherein, air-flow port 15 can be air intake vent or air outlet.Certainly, device body 10 can have air intake vent and air outlet simultaneously, only illustrates air-flow port 15 at this embodiment and explains.
Heat-sink unit 13 electrically connects with control module 12, and projection lens 14 is in order to the projection image.The thermal current of device body 10 inside exchanges with the cold airflow of device body 10 outsides by air-flow port 15.Sensing module 11 is arranged in the device body 10 and with control module 12 and electrically connects.When sensing module 11 detect object near and when entering in the preset range around the air communication mouth 15, sensing module 11 sends signals to control module 12, makes control module 12 start anti-overheated mechanism.
As shown in Figure 1, optical projection apparatus also comprises bulb 16 and light engine 17.Bulb 16 and light engine 17 all are separately positioned in the device body 10, and electrically connect with control module 12 respectively.Bulb 16 is in order to produce light source, to send on the light engine 17 and by projection lens 14 image to be amplified projection.And the bulb 16 that produces light source is one of device body 10 inner main elements that produce thermal source.
Please be simultaneously with reference to Fig. 2, it is the calcspar of the element relation of Fig. 1 optical projection apparatus.As shown in Figure 2, control module 12 electrically connects with sensing module 11, heat-sink unit 13, bulb 16 and light engine 17 respectively.Whether sensing module 11 has object to enter in air-flow port 15 preset range on every side in order to detect.13 of heat-sink units in time will install inner thermal current and discharge, and within safe range and can be not overheated, other elements in the device body 10 can not damaged in order to the temperature of holdout device body 10.Bulb 16 is in order to producing light source, and this light source projects projects screen by projection lens 14 with image again to light engine 17.
After optical projection apparatus 1 was activated, the bulb 16 that electrically connects with control module 12 came into operation immediately so that light source to be provided, so bulb 16 can constantly produce thermals source in that device body 10 is inner, and whole device body 10 temperature are risen.When the user in the process of operating optical projection arrangement 1, if object is arranged unintentionally, too close air-flow ports 15 of article such as books, information kit or notebook computer or device for example, for example be after having entered air-flow port 15 preset range on every side, then this object has stopped air-flow port 15 partially or completely, makes the thermal currents in the device body 10 can't be as expectedly exchanging with the outer cold airflow of device body 10.At this moment, sensing module 11 sends signal immediately to control module 12, makes control module 12 start anti-overheated mechanism.
In this embodiment, the Position Design of sensing module 11 in device body 10 preferably designs at adjacent gas communication port 15 places, as shown in Figure 1.This air-flow port 15 can be air intake vent (with so that in the cold airflow access to plant body 10 outside the device body 10), or air outlet (with so that the thermal current in the device body 10 is outer by ejector body 10).When sensing module 11 detects air intake vent or the change of the state of air outlet, but the anti-overheated mechanism of OnNow.Simultaneously, the position of heat abstractor 13 except design in the adjacent side of bulb 16, also preferred adjacent gas communication port 15 places.This mode can make the circulation of thermal current and cold airflow reach optimization, and the temperature of device body 10 is maintained within the safe range.
When control module 12 starts anti-overheated mechanism, can send out the warning image, the warning image is projected onto on the screen by projection lens 14, and the foreign object of reminding the user will be adjacent to air-flow port 15 places removes.This warning image can be to present a tandem literal to have foreign object in order to explanation at air outlet or air intake vent and exist.
In addition, this anti-overheated mechanism also can be to strengthen cooling mechanism.After sensing module 11 sent to control module 12 with signal, 12 of control modules drove heat-sink unit 13 to strengthen its radiating effect.Heat-sink unit 13 can be a fan, and after starting this reinforcement cooling mechanism, control module 12 drive fan make the rotation speed of the fan increase and wind-force is strengthened, and then the exchange efficiency of thermal current and cold airflow is promoted.Certainly, the anti-overheated mechanism that control module 12 is started can comprise both, that is: the image of projection warning simultaneously is to screen and drive heat-sink unit 13 to strengthen radiating effect.
Therefore, in other words, sensing module 11 has sensing range, when sensing module 11 detects state in the sensing range and changes, sensing module 11 can transmit the first signal S1 to control module 12, control module 12 transmit again the second signal S2 to heat-sink unit 13 to strengthen its radiating effect.Perhaps, this control module 12 transmits the 3rd signal S3 to light engine 17, and transmits the warning image by projection lens 14 and remind the user.Perhaps, control module 12 is sending the second signal S2 to heat-sink unit 13 during with the reinforcement cooling mechanism, also send simultaneously the 3rd signal S3 to projection lens 14 to send out the warning image.
In addition, when practical application, sensing module 11 can be an infrared inductor.Behind the preset range around object enters air-flow port 15, this object has been blocked the infrared ray that infrared inductor sent, and then makes these sensing module 11 transmission signals prevent overheated mechanism to control module 12 to start.Certainly, have and know that usually the knowledgeable should understand that the present invention is not limited to this, any element with measuring ability all can be used with as sensing module 11.
The optical projection apparatus that the above embodiment of the present invention is disclosed, it adds the sensing module in device, in order to the state of the air-flow port of pick-up unit, in case the overheated situation of locking apparatus takes place.When the sensing module in the air-flow port for example is the air intake vent or the preset range of air outlet, or the sensing module detects the change of its state in its sensing range, can send signal immediately to control module, to start anti-overheated mechanism.Avoided optical projection apparatus to be blocked the problems of excessive heat that is caused effectively because of the air-flow port.
The main element symbol description
1: optical projection apparatus 10: device body
11: sensing module 12: control module
13: heat-sink unit 14: projection lens
15: air-flow port 16: bulb
17: light engine S1: first signal
S2: the second signal S3: the 3rd signal
In sum, though the present invention discloses as above with preferred embodiment, so it is not in order to limit the present invention.The technician of the technical field of the invention without departing from the spirit and scope of the present invention, can do various changes and retouching.Therefore, protection scope of the present invention should with appended claim the person of being defined be as the criterion.
Claims (11)
1. optical projection apparatus comprises:
Device body, have control module, heat-sink unit, projection lens and at least one air-flow port, described heat-sink unit and described control module electrically connect, described projection lens is in order to the projection image, and the thermal current of described device body inside exchanges with the cold airflow of described device body outside by described air-flow port; And
The sensing module is arranged in the described device body and electrically connects with described control module;
When described sensing module detected object and enters in the preset range around the described air-flow port, described sensing module sent signal to described control module, makes described control module start anti-overheated mechanism.
2. optical projection apparatus according to claim 1, wherein said anti-overheated machine is made as the warning image, described warning image also by described projection lens projects to screen.
3. optical projection apparatus according to claim 1, wherein said anti-overheated machine is made as the reinforcement cooling mechanism, after described sensing module was sent to described control module with described signal, described control module then drove described heat-sink unit to strengthen its radiating effect.
4. optical projection apparatus according to claim 1, wherein said anti-overheated machine is made as the warning image and strengthens cooling mechanism, to screen, described reinforcement cooling mechanism then drives described heat-sink unit to strengthen its radiating effect by described control module to described warning image by described projection lens projects.
5. optical projection apparatus according to claim 1, wherein said sensing module are arranged on contiguous described air-flow passage port.
6. optical projection apparatus according to claim 1, wherein said heat-sink unit are arranged on contiguous described air-flow passage port.
7. optical projection apparatus according to claim 1, wherein said sensing module is an infrared inductor.
8. optical projection apparatus according to claim 1, wherein said heat-sink unit is a fan.
9. optical projection apparatus comprises:
Device body has control module, heat-sink unit and projection lens, and described heat-sink unit and described control module electrically connect, and described projection lens is in order to the projection image; And
The sensing module is arranged in the described device body and is adjacent to described heat-sink unit, and described sensing module has sensing range, and described sensing module and described control module electrically connect;
Wherein, the state that detects in the described sensing range when described sensing module changes, described sensing module can transmit first signal to described control module, described control module then transmit second signal to described heat-sink unit to strengthen its radiating effect, described control module also transmits the warning image, and by described projection lens described warning image is projected to screen.
10. optical projection apparatus according to claim 9, wherein said device body also includes the air port, uses so that the outer cold airflow of described device body enters in the described device body, and described sensing module is contiguous described air intake vent.
11. optical projection apparatus according to claim 9, wherein said device body also comprises air outlet, uses so that the thermal current in the described device body is drawn described device body the contiguous described air outlet of described sensing module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610090175A CN100589026C (en) | 2006-07-03 | 2006-07-03 | Optical projection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610090175A CN100589026C (en) | 2006-07-03 | 2006-07-03 | Optical projection apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101101438A CN101101438A (en) | 2008-01-09 |
| CN100589026C true CN100589026C (en) | 2010-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610090175A Expired - Fee Related CN100589026C (en) | 2006-07-03 | 2006-07-03 | Optical projection apparatus |
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| CN (1) | CN100589026C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103025120B (en) * | 2011-09-22 | 2016-03-30 | 联想(北京)有限公司 | Cooling system, heat dissipating method and electronic equipment thereof |
| CN107664903B (en) * | 2016-07-27 | 2020-04-28 | 深圳光峰科技股份有限公司 | Color wheel device and projector |
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- 2006-07-03 CN CN200610090175A patent/CN100589026C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN101101438A (en) | 2008-01-09 |
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Granted publication date: 20100210 Termination date: 20100703 |