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LED (Light-emitting diode) light source device

A technology of light-emitting diodes and light source devices, which can be used in light sources, electric light sources, lighting devices, etc., and can solve problems such as inability to adjust

Inactive Publication Date: 2013-01-02
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the relative position between the packaged LED chip and the phosphor layer is fixed, the color temperature of the light emitted by the LED light source is also fixed, which cannot be adjusted, and cannot meet actual needs.

Method used

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  • LED (Light-emitting diode) light source device
  • LED (Light-emitting diode) light source device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0015] see figure 1 An LED light source device 10 provided in the first embodiment of the present invention includes a light emitting part 100 , a driving part 200 and a fluorescent sheet 300 arranged on the driving part 200 and blocking the light emitting path of the light emitting part 100 .

[0016] The light emitting unit 100 is disposed on one side of the driving unit 200 . The light emitting unit 100 includes a substrate 110 and a plurality of light emitting diodes 120 disposed on the substrate 110 . The plurality of LEDs 120 may be ultraviolet, blue, green, red or white LEDs.

[0017] The driving part 200 includes a driver 210 and a rotating shaft 220 . One end of the rotating shaft 220 is disposed on the driver 210, and the driver 210 can drive the rotating shaft 220 to rotate around its central axis and can control the rotating shaft 220 to rotate at a constant speed or periodically at a variable speed.

[0018] see figure 2 , the fluorescent sheet 300 is a circu...

Embodiment approach 2

[0023] see image 3 The difference between the LED light source device 20 provided in the second embodiment of the present invention and the LED light source device 10 in the first embodiment is that one end of the rotating shaft 220 is set on the driver 210, and the other end passes through the fluorescent sheet 300. The center is fixedly connected to the center of the surface of the substrate 110 ; the plurality of LEDs 120 are arranged on the surface of the substrate 110 facing the fluorescent sheet 300 .

[0024] When in use, the driver 210 drives the rotating shaft 220 to rotate, and drives the substrate 110 to rotate at a periodically variable speed relative to the fluorescent sheet 300 , thereby driving the light emitting diode 120 to rotate at a periodically variable speed relative to the fluorescent sheet 300 . When the substrate 110 rotates at a periodically variable speed, the amount of fluorescent powder excited by the forward light of the light emitting diode 120 ...

Embodiment approach 3

[0026] see Figure 4 The difference between the LED light source device 30 provided in the third embodiment of the present invention and the LED light source device 10 in the first embodiment is that the LED light source device 30 further includes a PWM adjustment device 400, and the PWM adjustment device 400 uses In order to control the pulse width of each LED 120 , the lighting time of each LED 120 is adjusted.

[0027] When in use, the driver 210 controls the rotating shaft 220 to rotate at a periodically variable speed, and drives the fluorescent sheet 300 to rotate at a periodically variable speed. At the same time, the PWM adjustment device 400 controls the lighting time of each LED 120, and the fluorescent sheet 300 rotates to cooperate with each LED 120. The lighting time of each area is controlled to control the time when the phosphors in each area are excited by the light, thereby changing the color temperature.

[0028] It can be understood that when the driver 210...

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Abstract

The invention discloses an LED (light emitting diode) light source device comprising a light emitting part, a fluorescence piece, a driving part and a PWM (Pulse-Width Modulation) adjusting device, wherein the light emitting part comprises a substrate and a plurality of LEDs arranged on the substrate, the fluorescence piece shields a light emission path of the LEDs and comprises a plurality of regions with different content of fluorescent powder, the driving part drives the fluorescence piece and the substrate to oppositely rotate, and the PWM adjusting device adjusts and changes the illumination time of the LEDs to control the irradiated excitation time of the fluorescent powder in each region so as to change color temperatures.

Description

technical field [0001] The invention relates to an illuminating device, in particular to a light emitting diode light source device. Background technique [0002] Light-emitting diodes are energy-saving, environmentally friendly, and long-life solid-state light sources. Therefore, the research on light-emitting diode technology has been very active in the past ten years, and light-emitting diodes are gradually replacing traditional light sources such as fluorescent lamps and incandescent lamps. In the prior art, the light emitting diode light source device generally installs the light emitting diode chip on the circuit board, and then uses the encapsulation gel doped with phosphor to encapsulate the light emitting diode, and the light emitted by the light emitting diode chip excites the phosphor powder to be emitted to the light source. external. However, since the relative position of the packaged LED chip and the phosphor layer is fixed, the color temperature of the light...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S2/00F21V14/00F21V23/00F21Y101/02
Inventor 曾坚信
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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