Method employing temperature compensation to stabilize LED lamp temperature

A technology of temperature compensation and LED lamps, which is applied in the layout of electric lamp circuits, cooling/heating devices of lighting devices, lighting devices, etc., can solve the problems that the influence of ambient temperature on the temperature rise of LED lamps cannot be changed, and the cooling range is limited, etc., to achieve Reduce the luminous flux, avoid shortening the service life, and prolong the effect of LED life

Inactive Publication Date: 2013-10-02
浙江耀恒光电科技有限公司
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Problems solved by technology

The disadvantage of the above technology is that no matter whether it is natural convection heat dissipation, forced cooling by adding a fan, heat pipe or loop heat pipe for heat dissipation, it cannot change the fact that the fixed lamp cavity volume and structure, the siz

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  • Method employing temperature compensation to stabilize LED lamp temperature
  • Method employing temperature compensation to stabilize LED lamp temperature
  • Method employing temperature compensation to stabilize LED lamp temperature

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Embodiment Construction

[0013] The present invention will be further elaborated below through specific embodiments. Examples will help to better understand the present invention, but the present invention is not limited only to the following examples.

[0014] High-power LED lamps generally work in a constant current state. When the external environment temperature changes, the LED forward voltage decreases, and the LED drive power supply reduces the output voltage accordingly, basically maintaining the output current and output power constant. The invention utilizes the temperature compensation technology to monitor the temperature of the LED lamp, and feeds back to the LED driving power supply in real time for current regulation. When the temperature is high, the temperature compensation system reduces the output current to achieve the purpose of limiting and reducing the temperature rise; when the temperature decreases, the temperature compensation system increases the output current appropriately,...

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Abstract

The invention relates to a method employing temperature compensation to stabilize LED lamp temperature. The method comprises steps that: (1), a driver realizes output to an LED module, heat generated by the LED module is transmitted to a wick board through a heat conduction material and then is radiated to the air through heat radiation sheets; (2), when an external heat radiation environment is serious, and temperature of the LED module reaches to setting temperature of a temperature compensation circuit, a temperature probe acquires feedback information, the temperature compensation circuit in the driver carries out real-time temperature compensation; and (3), when temperature is high, a temperature compensation system reduces an output current, temperature rising is limited and reduced, and when the temperature is reduced, the temperature compensation system improves the output current, so the LED module stays in a heat balance state in a safety temperature scope. The method employing temperature compensation to stabilize the LED lamp temperature is advantaged in that: temperature of a large power LED lamp is effectively stabilized; when temperature after rising or reduction exceeds the set control temperature, output of the driver can be improved or reduced; the LED lamp can realize constantly stable and reliable operation; service life and light emitting efficiency of the LED lamp are improved.

Description

technical field [0001] The invention relates to a driving method with temperature compensation for a power type LED lamp, in particular to a method for stabilizing the temperature of an LED lamp by using temperature compensation. Background technique [0002] Existing technology: natural convection heat dissipation, forced cooling by adding a fan, heat pipe or loop heat pipe for heat dissipation. The disadvantage of the above technology is that no matter whether it is natural convection heat dissipation, forced cooling by adding a fan, heat pipe or loop heat pipe for heat dissipation, it cannot change the fact that the fixed lamp cavity volume and structure, the size of the heat sink and the heat dissipation area determine that they only It can passively assist the LED lights to lower the temperature, the cooling range is limited, and the influence of the ambient temperature on the temperature rise of the LED lights cannot be changed. Contents of the invention [0003] Th...

Claims

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Application Information

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IPC IPC(8): H05B37/02F21V29/00F21Y101/02F21V29/50
CPCY02B20/40
Inventor 吕健郭军华任金松范世权
Owner 浙江耀恒光电科技有限公司
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