CN201576161U - Projector - Google Patents
Projector Download PDFInfo
- Publication number
- CN201576161U CN201576161U CN201020133074XU CN201020133074U CN201576161U CN 201576161 U CN201576161 U CN 201576161U CN 201020133074X U CN201020133074X U CN 201020133074XU CN 201020133074 U CN201020133074 U CN 201020133074U CN 201576161 U CN201576161 U CN 201576161U
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- China
- Prior art keywords
- light source
- projector
- control chip
- adaptive control
- bulb
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
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Abstract
The utility model provides a projector capable of preventing unreasonable lumen output of the projector, comprising a light source adaptive control chip, wherein the light source adaptive control chip comprises a parameter input end and an adjustment signal output end and an inductor for detecting environmental parameters of the projector such as luminance and projection distance is connected with the parameter input end of the light source adaptive control chip and the light source module is connected with an adjustment signal output end of the light source adaptive control chip. Because the lumen output is automatically adjusted according to the environmental parameter and the lumen output of the whole projector more corresponds with the environmental requirement to obtain the best service effect and effectively increase the service efficiency of UHP bulb.
Description
[technical field]
The utility model relates to a kind of projector, relates in particular to a kind of projector that can control the lumen output of projector light source bulb.
[background technology]
Along with development of science and technology, various novel electronic equipment are applied in production, the life, and projector is applied in teaching, meeting and the home theater more and more widely as a kind of large screen display output device.
The normally used light source bulb of existing projector generally can be divided into metal halogen bulb and ultra high pressure mercury bulb according to type.UHP (Ultra High Performance, very-high performance) bulb is a kind of ultra high pressure mercury bulb, and the UHP bulb produces cold light, can produce very big light quantity under identical power consumption, the life-span is longer, generally can normally use more than 4000 hours, and brightness decay is very little, can extinguish at once when depletion.Because characteristics such as the brightness that the UHP bulb had is higher, thermal value is little, the life-span is long are widely adopted as the main stream light sources bulb at present.The bulb in the projector is depended in the brightness of projector to a great extent.Yet in existing projector, the UHP bulb generally uses constant power, even under different ambient brightnesss, its output lumen also is on all four.Because the output of the lumen of UHP bulb can the decay gradually along with service time, the lumen output meeting of UHP bulb reduces greatly a period of time of after having used, thereby does not reach original effect.Therefore, the new UHP bulb that uses makes that the brightness of projector is bright excessively, has caused unnecessary lumen output and wastes energy; And the UHP bulb through using after a while is because the decline significantly of the lumen output of UHP bulb, and makes the brightness of projector not reach user's request for utilization.Therefore, for satisfying user's normal request for utilization, just need change the UHP bulb in advance.
Therefore, press for a kind of follow-on projector of proposition to overcome problems of the prior art.
[utility model content]
The technical problems to be solved in the utility model is to avoid the irrational lumen output of projector.
For solving the problems of the technologies described above, the utility model provides a kind of projector, it comprises the light source module with light source bulb, wherein, the inductor that also comprises the environmental parameter of light source adaptive control chip and detection projector, light source adaptive control chip comprises parameter input end and conditioning signal output terminal, and inductor is connected to the parameter input end of light source adaptive control chip, and light source module is connected to the conditioning signal output terminal of light source adaptive control chip.
In preferred embodiment, inductor comprises optical inductor and position sensor that can measuring distance, and this optical inductor is installed in the position that may detect environmental light brightness on the projector, and position sensor is located at the position towards projection screen of projector.Position sensor and optical inductor all are provided with preferred front at projector.Optical inductor is preferably photoresistance.
In preferred embodiment, the utility model projector also comprises cooling adaptive control chip and cooling device, cooling adaptive control chip comprises light source power signal input part and cooling power conditioning signal output terminal, the light source power signal input part is connected to light source adaptive control chip, cooling power conditioning signal output terminal is connected to cooling device, and cooling device is installed in the position to the light source bulb heat radiation.Preferably, cooling device is a fan blower, and this fan blower is installed in the position to the light source bulb blowing, and it circulates by quickening light source bulb ambient air and dispels the heat.
In preferred embodiment, the utility model projector is provided with data pattern or image mode functional select switch, and this functional select switch is enabled with control chip or the mode of closed condition is connected to light source adaptive control chip.
In preferred embodiment, what it was provided with light source bulb changes the lamp pilot lamp.The light source that provides at light source bulb can not make projector reach the qualified Lhr. of output, and then changing the lamp pilot lamp can be light, reminds the user in time to change light source bulb.
In preferred embodiment, light source bulb is the UHP bulb, and described light source module comprises rectifier, and this rectifier is connected to light source bulb in the mode of control bulb output power.
The utility model obtains projector distance by position sensor, obtain ambient brightness by optical inductor, light source adaptive control chip carries out the power of computing with automatic adjustment light source bulb to projector distance and ambient brightness as environmental parameter, and then adjusts the lumen output of whole projector.Because lumen output can be adjusted automatically according to environmental parameter, make the lumen of whole projector export the needs that conform more, obtain best result of use, also effectively improved the service efficiency of light source bulb.
Below by describing preferred embodiment with reference to the accompanying drawings in detail, disclose other aspects of the present utility model and feature more significantly.But should be known in this accompanying drawing only for task of explanation designs, not as the qualification of scope of the present utility model, because the qualification of scope should be with reference to additional claim.Should also be appreciated that unless otherwise indicated, accompanying drawing only tries hard to illustrate conceptually structure described herein and flow process, unnecessary drafting to scale.
[description of drawings]
Fig. 1 is the structural representation block diagram according to the projector of a kind of embodiment of the utility model.
Fig. 2 is the schematic perspective view according to the projector of a kind of embodiment of the utility model.
[embodiment]
With reference now to accompanying drawing, describe the utility model embodiment preferred, wherein identical label is used for guiding components identical all the time.Purpose for explaining provides many details in the following description, understands in depth so that the utility model provided.Yet, understand easily, do not having under the situation of these details, this utility model still can be implemented.
See also Figure 1 and Figure 2, the projector 100 of an embodiment of the present utility model comprises adaptive control chipset 1, light source module 2 and inductor 3.In the present embodiment, adaptive control chipset 1 comprises light source adaptive control chip 10 and cooling adaptive control chip 12.Light source module 2 comprises light source bulb 20 and rectifier 22.Light source bulb 20 is preferably the UHP bulb.Inductor 3 is used to detect the environmental parameter of projector, comprises optical inductor 30 and position sensor 32.Optical inductor 30 and position sensor 32 all are connected to the parameter input end of light source adaptive control chip 10.The conditioning signal output terminal of light source adaptive control chip 10 links to each other with rectifier 22, and rectifier 22 links to each other with UHP bulb 20.The environmental parameter of the projector 100 that light source adaptive control chip 10 provides according to inductor 3 is adjusted the output powers of UHP bulbs automatically by rectifier 22, thus the lumen output of control UHP bulb 20, and then adjust the output brightness of projector 100.
Selectively, projector 100 is provided with the projecting function selector switch 6 of data pattern or image mode.Functional select switch 6 with control chip enable or the mode of closed condition is connected to light source adaptive control chip 10, can select projection mode by functional select switch 6.Because under image mode, the output of projector lumen constantly changes, and alters a great deal, therefore the effect of using light source adaptive control chip 10 to obtain running counter to desire.According to the projector 100 of a kind of embodiment of the utility model, when switching to the image mode projection, then close the light source adaptive control chip 10 of projector 100; When switching to the data pattern projection, then enable the light source adaptive control chip 10 of projector 100.
Selectively, position sensor 32 can measuring distance, its be located at projector 100 towards the position of projection screen, be used for the distance between measuring projector 100 and the projection screen (not shown).This distance is used for the different nominal brightness ratio of standard, and distance is different, and the lumen output of projector 100 also should be different.Optical inductor 30 is installed in the position that may detect environmental light brightness on the projector 100, is used for acquisition environment brightness.Preferably, position sensor 32 and optical inductor 30 all are arranged on the front of projector.
According to the projector 100 of an embodiment of the present utility model, the monochrome information that range information that light source adaptive control chip 10 is fed back according to position sensor 32 and optical inductor 30 are fed back is controlled the output power of rectifier 22 automatically.Control the output power of UHP bulb by the output power of adjusting rectifier 22.
Selectively, preestablish the maximum rated power and the minimum rated power of rectifier 22.When providing the required lumen of user to export, if desired power less than minimum rated power, is then used minimum rated power, screen appears dodging in the picture of avoiding causing projector 100 to cast out.If described lumen output desired power is greater than maximum rated power, then light source adaptive control chip 10 is by changing the waveform of rectifier 22, adjust the power of UHP bulb 20, in the hope of obtaining qualified projection lumen output, thereby avoid reducing the serviceable life of UHP bulb 20, and avoid increasing the danger of blast.Between maximum rated power and minimum rated power, can be subdivided into various power grades,, regulate the output lumen size of projector 100 by regulating watt level step by step as one watt of one-level.Projector 100 writes down the grade of power demands, and compares with peak power and lowest power, thereby judges the action that will take according to consequential signal relatively.
Selectively, also be provided with in projector 100 fronts and change lamp pilot lamp 4.After the waveform that is changing rectifier 22, can't obtain qualified projector lumen output, then changing the lamp pilot lamp can be light, reminds the user in time to change UHP bulb 20.
In the present embodiment, optical inductor 30 is photoresistance.In light source adaptive control chip 10, the most comfortable brightness preestablishes the pairing lumen output power of varying environment brightness data according to human eye.Before projector 100 started, optical inductor 30 was surveyed the place ahead first environment brightness; After projector 100 started general 5 minutes, state was basicly stable, the place ahead second environment brightness that optical inductor 30 is surveyed again; Light source adaptive control chip 10 calculates the ratio of first environment brightness and second environment brightness, compare with ratio and the nominal brightness ratio of calculating, if it is different, then light source adaptive control chip 10 is by regulating the power output of UHP bulb 20, and then regulate the lumen output of projector 100, thereby make brightness ratio equal the nominal brightness ratio.Preferably, projector 100 of the present utility model has multiple nominal brightness ratio to select.Because there is individual difference in user's lightsensitivity, the user can select suitable nominal brightness ratio so that eyes feel the most comfortable.In addition, after UHP bulb 20 uses for a long time, can be by reducing the nominal brightness ratio, to guarantee the serviceable life of UHP bulb 20.
According to the principle of luminosity of UHP bulb, lumen output has certain instability, and does not reach original effect having used a period of time of after lumen output to reduce greatly.After about 3 minutes, when the output lumen of UHP bulb 20 was stablized, projector 100 entered the brightness regulation pattern.Optical inductor 30 receives the brightness value of projection, and is entered in the light source adaptive control chip 10, and the power by 10 pairs of UHP bulbs 20 of light source adaptive control chip carries out trickle adjustment again, and then makes the user obtain stable lumen output.
When blank screen appearred in projection screen, light source adaptive control chip 10 control projector 100 were in the power lowest mode automatically; Surpass 10 minutes when the blank screen time, light source adaptive control chip 10 will be controlled projector 100 and shut down automatically.
As shown in Figure 1, projector 100 also comprises cooling adaptive control chip 12 and cooling device 5, cooling adaptive control chip 12 comprises light source power signal input part and cooling power conditioning signal output terminal, the light source power signal input part is connected to light source adaptive control chip 10, cooling power conditioning signal output terminal is connected to cooling device 5, and cooling device 5 is installed in the position to 20 heat radiations of UHP bulb.Selectively, cooling device 5 is fan blowers 5, and 5 pairs of UHP bulbs of this fan blower 20 are dried, and circulates by quickening UHP bulb 20 ambient airs and dispels the heat.Cooling adaptive control chip 12 is used for the size of cooling air is regulated.When cooling adaptive control chip 12 received the power adjustments signal that light source adaptive control chip 10 sends, cooling adaptive control chip 12 can calculate the size of corresponding cooling air, thereby cooling air is regulated.Like this, UHP bulb 20 can use under the temperature range of the best all the time, can prolong its life-span effectively.
The utility model is by being provided with light source adaptive control chip 10 and position sensor 32 and optical inductor 30, projector 100 can be adjusted the power of UHP bulb 20 automatically according to ambient brightness, apart from projecting plane distance and/or user's lightsensitivity, and then the lumen of adjusting whole projector is exported, to obtain best result of use, thereby help the user more clearly to read, and owing to be in economic model for a long time, can improve greatly the serviceable life of UHP bulb 20.Along with long use, when projector output lumen is lower than user's lumen requirement, can if still can not reach user's lumen requirement, can compensate by changing the lumen value that the rectifier waveform improves the UHP bulb by improving power.In addition,, can match different power levels, guarantee that the UHP bulb moves in the temperature range of its regulation by cooling adaptive control chip 12 is set.And, by establishing the replacement lamp pilot lamp, show when can not reach customer requirements and change the lamp prompting in the lumen output of projector, avoid using the important events such as great meeting of projector fortuitous event to occur at needs.
Though the utility model is in this demonstration and description, wherein imagination is most realistic and embodiment preferred, can recognize, in scope of the present utility model, can make a change, be not to be only limited to details described herein, but to meet the four corner of claims, to comprise its any modification and all device that is equal to it and equipment.
Claims (10)
1. a projector (100), it comprises the have light source bulb light source module (2) of (20), it is characterized in that, the inductor (30,32) that it also comprises light source adaptive control chip (10) and detects the environmental parameter of projector, described light source adaptive control chip (10) comprises parameter input end and conditioning signal output terminal, described inductor (30,32) is connected to the parameter input end of light source adaptive control chip (10), and described light source module (2) is connected to the conditioning signal output terminal of light source adaptive control chip (10).
2. projector as claimed in claim 1 (100), wherein, described inductor (3) comprises optical inductor (30), this optical inductor (30) is installed in the position that may detect environmental light brightness on the projector (100).
3. projector as claimed in claim 2 (100), wherein, described inductor (3) comprise can measuring distance position sensor (32), described position sensor (32) is located at the position towards projection screen of projector (100).
4. projector as claimed in claim 3 (100), wherein, described position sensor (32) and described optical inductor (30) all are arranged on the front of projector.
5. projector as claimed in claim 1 (100), wherein, also comprise cooling adaptive control chip (12) and cooling device (5), described cooling adaptive control chip (12) comprises light source power signal input part and cooling power conditioning signal output terminal, described light source power signal input part is connected to described light source adaptive control chip (10), described cooling power conditioning signal output terminal is connected to described cooling device (5), and described cooling device (5) is installed in the position to light source bulb (20) heat radiation.
6. projector as claimed in claim 5 (100), wherein, described cooling device (5) is fan blower (5), this fan blower (5) is installed in the position to light source bulb (20) blowing.
7. projector as claimed in claim 1 (100), wherein, it is provided with data pattern or image mode functional select switch (6), and described functional select switch (6) is enabled with control chip or the mode of closed condition is connected to light source adaptive control chip (10).
8. projector as claimed in claim 1 (100), wherein, what it was provided with light source bulb changes lamp pilot lamp (4).
9. projector as claimed in claim 2 (100), wherein, described optical inductor (30) is photoresistance.
10. projector as claimed in claim 1 (100), wherein, described light source bulb (20) is the UHP bulb, and described light source module (2) comprises rectifier (22), and described rectifier (22) is connected to described light source bulb (20) in the mode of control bulb output power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020133074XU CN201576161U (en) | 2010-03-17 | 2010-03-17 | Projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020133074XU CN201576161U (en) | 2010-03-17 | 2010-03-17 | Projector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201576161U true CN201576161U (en) | 2010-09-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020133074XU Expired - Fee Related CN201576161U (en) | 2010-03-17 | 2010-03-17 | Projector |
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| Country | Link |
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| CN (1) | CN201576161U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104301646A (en) * | 2013-07-16 | 2015-01-21 | 株式会社理光 | Information processing apparatus and information processing method |
| WO2017114256A1 (en) * | 2015-12-31 | 2017-07-06 | 青岛海尔股份有限公司 | Method and device for adjusting projection brightness |
| CN107305312A (en) * | 2016-04-18 | 2017-10-31 | 扬明光学股份有限公司 | Projection brightness and the automatic adjustment system and method for contrast |
| CN108957927A (en) * | 2018-07-19 | 2018-12-07 | 苏州博学智能科技有限公司 | A kind of office projection instrument |
| CN112995630A (en) * | 2021-03-11 | 2021-06-18 | 杭州当贝网络科技有限公司 | Flexible brightness adjusting method for fixed-focus projector, projector and readable storage medium |
-
2010
- 2010-03-17 CN CN201020133074XU patent/CN201576161U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104301646A (en) * | 2013-07-16 | 2015-01-21 | 株式会社理光 | Information processing apparatus and information processing method |
| WO2017114256A1 (en) * | 2015-12-31 | 2017-07-06 | 青岛海尔股份有限公司 | Method and device for adjusting projection brightness |
| CN107305312A (en) * | 2016-04-18 | 2017-10-31 | 扬明光学股份有限公司 | Projection brightness and the automatic adjustment system and method for contrast |
| CN107305312B (en) * | 2016-04-18 | 2023-10-24 | 扬明光学股份有限公司 | Automatic adjustment system and method for projection brightness and contrast |
| CN108957927A (en) * | 2018-07-19 | 2018-12-07 | 苏州博学智能科技有限公司 | A kind of office projection instrument |
| CN112995630A (en) * | 2021-03-11 | 2021-06-18 | 杭州当贝网络科技有限公司 | Flexible brightness adjusting method for fixed-focus projector, projector and readable storage medium |
| CN112995630B (en) * | 2021-03-11 | 2022-12-30 | 杭州当贝网络科技有限公司 | Flexible brightness adjusting method for fixed-focus projector, projector and readable storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100908 Termination date: 20160317 |
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| CF01 | Termination of patent right due to non-payment of annual fee |