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Projection device

A technology of projection device and circuit board, which is applied in projection devices, optics, instruments, etc., can solve problems such as the influence of the overall heat dissipation efficiency of small projectors, and achieve the effect of reducing thermal effects and improving device performance.

Inactive Publication Date: 2015-08-12
QISDA OPTRONICS (SUZHOU) CO LTD +1
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

For ordinary small projectors, since the three-color (R / G / B) light source is usually placed on the three sides of the light mixing part, the overall heat dissipation performance of the small projector will also be affected due to space constraints

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Embodiment Construction

[0031] In order to have a further understanding of the purpose, structure, features, and functions of the present invention, the following detailed descriptions are provided in conjunction with the embodiments.

[0032] The present invention provides a projection device, especially a projection device with natural convection heat dissipation design, so as to reduce the speed of the fan or even eliminate the use of the fan, thereby reducing the noise and improving the operation quality. Furthermore, the projection device of the present invention has an optimized circuit board configuration to reduce the impact of thermal effects, and can also use the cooperation of the metal heat conducting element and the heat sink to improve the heat dissipation performance. Embodiments of the projection device of the present invention will be described in detail later with reference to the drawings.

[0033] Figure 1A It is a perspective view of a projection device according to an embodimen...

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Abstract

The invention provides a projection device capable of reducing the influence of the thermal effect. The projection device comprises a shell and at least two circuit boards. The shell has a top plate and a bottom plate. The at least two circuit boards are arranged in the shell and are parallel to the top plate and the bottom plate. The at least two circuit boards differ in temperature / power or are provided with electronic elements differing in heat sensitivity. The at least two circuit boards are sequentially superimposed according to the temperature / power or according to the heat sensitivity of the electronic elements. The circuit board, closer to the bottom plate, among the at least two circuit boards has lower temperature / power, or the electronic element of the circuit board, closer to the bottom plate, among the at least two circuit boards is more susceptible to heat.

Description

technical field [0001] The present invention relates to a projection device, in particular to a projection device with a high-efficiency natural convection cooling mechanism. Background technique [0002] The power of the projector is getting bigger and bigger due to the requirement of brightness, but the efficiency of the light-emitting diodes has not been relatively improved. Even in the case of low power, the current products need to use fans for forced cooling, and when the power is increased In the case of , the problem of thermal effect is even more serious. [0003] Fans are used in the design of traditional projectors, so the consideration of cooling airflow is mostly based on the smoothness of forced convection, so that the airflow of the fan can flow smoothly to achieve the effect of heat dissipation. However, since the fan will generate quite a lot of noise during operation, if the fan speed can be greatly reduced or even the use of the fan can be eliminated, it ...

Claims

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Application Information

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IPC IPC(8): G03B21/16G03B21/14
Inventor 林奇成
Owner QISDA OPTRONICS (SUZHOU) CO LTD
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