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Temperature detector and projector using same

A technology for temperature detectors and projectors, applied in the field of detectors, can solve the problems of affecting the service life of light bulbs and the failure of light bulbs to be successfully re-lit once, so as to improve the success rate and avoid the effect of service life

Inactive Publication Date: 2015-07-29
CORETRONIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the above, the bulb cannot be re-lighted successfully once, and frequent lighting will affect the service life of the bulb

Method used

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  • Temperature detector and projector using same
  • Temperature detector and projector using same
  • Temperature detector and projector using same

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Embodiment Construction

[0019] The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of multiple embodiments with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as "upper", "lower", "front", "rear", "left", "right", etc., are only referring to the directions of the drawings. Accordingly, the directional terms are used to illustrate, not to limit, the invention.

[0020] Figure 1A It is a system diagram of a projector according to an embodiment of the present invention. Referring to FIG. 1 , in this embodiment, a projector 100 includes a projection device 110 , a light bulb 120 , a fan 130 , a driving circuit 140 and a temperature detector 150 . The bulb 120 is used to provide a light beam L, and the projection device 110 is shown as an optical element, which transmits the light beam L and projects an image Im. The fan 130 is used to di...

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Abstract

A temperature detector and a projector using the temperature detector are provided. The temperature detector is configured to judge the operating temperature of the lamp in the projector. The temperature detector includes a charging / discharging circuit and a temperature judgment unit. The charging / discharging circuit receives a system voltage and provides a temperature voltage. The temperature judgment unit receives the temperature voltage and judges whether or not the operating temperature of the lamp falls in a first temperature range according to the temperature voltage so as to correspondingly output a temperature judgment signal. The scheme of using the temperature detector can determine a heat-dissipation time required by the lamp to advance the accomplishment rate of re-lighting and avoid affecting the lifetime of the lamp due to frequent lighting operation.

Description

technical field [0001] The invention relates to a detector, and in particular to a temperature detector and a projector using the temperature detector. Background technique [0002] Today, the light sources of projectors are roughly divided into lamps, light-emitting diodes (LEDs), and lasers. Among them, lamps have the advantages of low cost and high brightness, so most projectors still use lamps as light sources. [0003] For a projector using a light bulb, when the second lighting is required, the working temperature of the bulb after use is still too high, that is, the mercury in the bulb is still vaporized mercury, so the second lighting is not easy to succeed. [0004] The most commonly used method is to use the re-try method (Re-try), which uses the fan to cool down the light bulb each time. After the fan is turned on for a fixed period of time (about 20-25 seconds), the light bulb is immediately turned on. Once the light fails , and immediately use the fan to cool t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K13/00G03B21/16
CPCG03B21/16G03B21/206G01K13/00G01K3/005
Inventor 林明政陈嘉铭
Owner CORETRONIC