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LED lamp dimming method, dimming module and lamp

A technology of LED lights and LED lamp beads, which is applied in the direction of electroluminescence light source, light source, electric light source, etc., can solve the problem that it is difficult to meet the color temperature change of customers, and achieve the effect of cost reduction, high cost performance, and synchronous adjustment of brightness and color temperature

Active Publication Date: 2020-09-29
FOSHAN TOPDAY OPTOELECTRONICS TECH
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Problems solved by technology

Such a color temperature curve is often difficult to meet customers' requirements for color temperature changes throughout the dimming range.

Method used

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  • LED lamp dimming method, dimming module and lamp
  • LED lamp dimming method, dimming module and lamp
  • LED lamp dimming method, dimming module and lamp

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Embodiment Construction

[0036] see Figure 2 to Figure 5In this embodiment, the technical solution of the present invention will be described by taking the first LED lamp bead L1 , the second LED lamp bead L2 and the third LED lamp bead L3 as 2200K, 2700K and 3000K respectively as an example.

[0037] LED lamp dimming method, the LED lamps involved include three LED lamp beads with different color temperatures, including the first LED lamp bead L1, the second LED lamp bead L2 and the third LED lamp bead L3, and the three LED lamp beads are controlled by the following method Current distribution ratio of LED lamp beads with different color temperatures:

[0038] The LED lamp increases from the minimum power Pmin to a certain power P1. The current of the first LED lamp bead L1 increases linearly from Pmin to P1. P1 is about 36% of Pmax. The LED lamp increases from power P1 to P1. The maximum power Pmax, the current of the first LED lamp bead L1 decreases linearly;

[0039] And, when the LED lamp star...

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Abstract

The LED lamp dimming method of the present invention adopts three kinds of lamp beads with different color temperatures, and adopts a variable constant current source to detect the line current, thereby adjusting the current distribution ratio of the three-way lamp beads, and the LED lamp starts to increase from the minimum power Pmin Before a certain power P2, only the first LED lamp bead L1 is lit, and its brightness increases linearly with the power increasing to P1. At the same time, the LED lamp starts from a certain power P2, and the second LED lamp bead L2 points Bright, its brightness increases linearly with the increase of power. When the power of LED lamp increases to P1, the third LED lamp bead L3 lights up, and its brightness increases linearly with the increase of power. The first LED lamp bead The brightness of L1 decreases in a linear trend from P1, so that the color temperature of the LED lamp increases in a linear trend with the increase in power, and realizes the effect of synchronous adjustment of the brightness and color temperature of the LED lamp. The present invention also provides a method for realizing the above adjustment The dimming module of the light method.

Description

technical field [0001] The technical field of dimming of LED lamps of the present invention particularly relates to a dimming method of LED lamps, a dimming module and a lamp. Background technique [0002] The color temperature of traditional incandescent lamps changes with the brightness. When the brightness is low, the color temperature is low (such as 2200k), and when the brightness is high, the color temperature is high (such as 3000k). In this way, when the user adjusts the light of the lamp through the dimmer, the color temperature of the lamp is also adjusted at the same time, thereby achieving the effect of adjusting the ambient atmosphere. [0003] In contrast, the color temperature of the LED light source is rarely affected by the brightness, which can basically be regarded as a constant color temperature output. Therefore, during the dimming process of ordinary LED lamps, the color temperature is basically constant. Therefore, in the process of replacing incand...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B45/20H05B45/10H05B44/00
CPCH05B45/395H05B45/20
Inventor 邓胜奇张志源
Owner FOSHAN TOPDAY OPTOELECTRONICS TECH
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