Heat dissipation system for stage lamps and stage lamps using the system and its heat dissipation method

Abstract

Disclosed are a stage lamp heat dissipation system, a stage lamp using the system and a heat dissipation method thereof. The stage lamp heat dissipation system comprises a light source (1), a first light reflecting assembly (2) surrounding the light source (1), a fixing seat (3) for fixing the light source (1), and a heat dissipation assembly (4) surrounding the outer circumferential surface of the first light reflecting assembly (2); the heat dissipation assembly (4) is formed by stacking up a plurality of heat sinks (41), and there are gaps between the plurality of stacked adjacent heat sinks (41), so as to form an air duct (411) for airflow circulation; the air duct (411) is formed in such a manner that there is an air inlet at one end and an air outlet at the other end and the air inlet and the air outlet are directly communicated with each other; an air feed device (5) is arranged at the position of the air inlet of the air duct (411). With such an arrangement, a cooling airflow fed by the air feed device (5) flows annularly along the air duct (411) and comes into direct contact with the outer circumferential surface of the first light reflecting assembly (2); fast heat exchange of the cooling airflow with the first light reflecting assembly (2) and the light source (1) can be achieved, enabling the heat produced at the light source (1) during operating to be discharged timely and effectively.

Description

technical field [0001] The present invention relates to the technical field of stage lights, and more specifically, to a heat dissipation system for stage lights, a stage light using the system and a heat dissipation method thereof. Background technique [0002] In the field of stage lighting, the power of the stage lamps used is usually relatively large, especially the light source part, such as a stage lamp that uses a gas discharge lamp as the light source. This type of light source is restricted by the technical characteristics of the light source itself during operation. It can convert a small part of electric energy into visible light, and most of the electric energy is converted into heat, infrared rays, ultraviolet rays, etc., so that a large amount of heat is often generated during work, and then the heat is transferred to the light source, which makes the light source (such as a light bulb) overheated. High, which will affect the use effect and service life of the ...

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Problems solved by technology

This structure uses forced convection for cooling and heat dissipation. Although the heat dissipation effect is better than that of natural convection and the above-mentioned heat dissipation methods, it still has the following defects: (1) The structure around the dichroic reflector is relatively compact, and there are many hindering factors , the fluid resistance is large, and the cooling airflow cannot circulate smoothly. In the process of forced convection, the convection coefficient h is low, the heat transfer Q of the fluid air is small, the temperature of the entire lamp holder system rises, the system thermal resistance R is large, and the whole system The heat dissipation efficiency is poor, which cannot well meet the heat dissipation requirements of the stage lighting. The heat generated by the light source part of the stage lighting cannot be discharged in a timely manner when it is in operation. The operating effect, normal service life, reliability and stability of the lighting are all affected. Seriously affected; (2) Although the heat sink disclosed in this patent can absorb most of the infrared light, there is still a part of the infrared light that is not absorbed and transmitted, which makes the temperature of the relevant components of the lamp rise; and the radiation of the light source will also be reflected The mouth is transmitted, thus affecting the effect of the lamps and lanterns

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