CN216775070U

CN216775070U - Novel light and color adjusting low-voltage LED lamp strip

Info

Publication number: CN216775070U
Application number: CN202123131858.6U
Authority: CN
Inventors: 向元立
Original assignee: Shenzhen Mingxue Optoelectronics Co ltd
Current assignee: Shenzhen Mingxue Optoelectronics Co ltd
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-06-17
Anticipated expiration: 2031-12-14

Abstract

The utility model discloses a novel dimming and toning low-voltage LED lamp strip, which relates to the field of light regulation, and comprises: the power supply voltage module is used for supplying square wave voltage with adjustable duty ratio; the driving module is used for selectively driving the cold color LED module and the warm color LED module to work according to the duty ratio of the square wave voltage; the cold color LED module is used for emitting cold color light (positive white light) during working; a warm color LED module for emitting warm color light (warm white light) when in operation; compared with the prior art, the LED cold color LED warm color LED module, the beneficial effects of the utility model are that: the silicon controlled dimmer of the utility model can be realized by using a common silicon controlled dimmer of the LED lamp strip; the longest time can be 20M without pressure drop, and the common bicolor temperature can be about 5M at most; the warm white and the normal white are switched simply and directly.

Description

Novel light and color adjusting low-voltage LED lamp strip

Technical Field

The utility model relates to the field of light adjustment, in particular to a novel dimming and color-mixing low-voltage LED lamp bar.

Background

The lamp strip is another name of the lamp strip and is a lighting product of an LED series. The flexible LED lamp strip adopts FPC to make the assembly line board, uses the high-brightness LED of paster encapsulation (SMD) as the light source, and every 3 lamps are a unit, and every 50 centimetres is a big length unit, and the thickness of this product is the thickness of a piece of coin only, and soft LED lamp strip does not account for the space and can cut at will, also can prolong at will and luminous not be influenced.

Most low-voltage LED lamp strips in the market at present are adjusted and supplied with PWM voltage, and the LED lamp strips switched by lamplight are complex to switch and large in voltage drop and need to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a novel dimming and toning low-voltage LED lamp bar to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a novel adjust luminance mixing of colors low pressure LED lamp strip, includes:

the power supply voltage module is used for supplying square wave voltage with adjustable duty ratio;

the driving module is used for selectively driving the cold color LED module and the warm color LED module to work according to the duty ratio of the square wave voltage;

a cold color LED module for emitting cold color light (positive white light) when working;

a warm color LED module for emitting warm color light (warm white light) when in operation;

the power supply voltage module is connected with the driving module, the cold color LED module and the warm color LED module, and the driving module is connected with the cold color LED module and the warm color LED module.

As a still further scheme of the utility model: the driving module comprises a resistor R1, a resistor R2, a capacitor C1, a triode Q1, a resistor R7, a triode Q2, a resistor R3 and a resistor R4, one end of the resistor R1 is connected with the resistor R3, the resistor R4 and the power supply voltage module, the other end of the resistor R1 is connected with a base of a triode Q1, the resistor R2 and the capacitor C1, the other end of the resistor R2 is grounded, the other end of the capacitor C1 is grounded, an emitter of the triode Q1 is grounded, a collector of the triode Q1 is connected with the other end of the resistor R3, the resistor R7 and the cold color LED module, the other end of the resistor R7 is connected with the other end of the resistor R4 and the base of the triode Q2, an emitter of the triode Q2 is grounded, and a collector of the triode Q2 is connected with the warm color LED module.

As a still further scheme of the utility model: the cold color LED module comprises a light bar LED1 and a resistor R5, one end of the light bar LED1 is connected with the power supply voltage module, the other end of the light bar LED1 is connected with a resistor R5, and the other end of the resistor R5 is connected with the driving module.

As a still further scheme of the utility model: the warm color LED module comprises a light bar LED2 and a resistor R6, one end of the light bar LED2 is connected with the power supply voltage module, the other end of the light bar LED2 is connected with a resistor R6, and the other end of the resistor R6 is connected with the driving module.

As a still further scheme of the utility model: the transistor Q1 and the transistor Q2 are NPN transistors.

Compared with the prior art, the utility model has the beneficial effects that: the silicon controlled dimmer of the utility model can be realized by using a common silicon controlled dimmer of the LED lamp strip; the longest time can be 20M without pressure drop, and the common bicolor temperature can be about 5M at most; the warm white and the positive white light are switched simply and directly.

Drawings

Fig. 1 is a circuit diagram of a novel dimming and color-adjusting low-voltage LED light bar.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

Referring to fig. 1, a novel dimming and color-mixing low-voltage LED light bar includes:

the warm color LED module is used for emitting warm color light;

When the triode Q1 is cut off and the triode Q2 is switched on, the warm color LED module works, the cold color LED module does not work, and warm color light (warm white light) is emitted; when the triode Q1 is switched on and the triode Q2 is switched off, the warm color LED module does not work, and the cold color LED module works to emit cold color light (positive white light); when the triode Q1 is conducted and the triode Q2 is conducted, the warm color LED module works, and the cold color LED module works; the color temperature is a mixture of warm and cold colors.

The light bar LED1 can emit cold light when it is powered.

The light bar LED2 can emit warm color light when powered.

The NPN triode is conducted when the base electrode is at a high level and is cut off when the base electrode is at a low level.

The working principle of the utility model is as follows: when the duty ratio of the input voltage is large (the voltage is reduced), the average voltage of the power supply voltage module (VCC in fig. 1) to the ground becomes small, at this time, the transistor Q1 is turned off, the transistor Q2 is turned on, the light bar LED2 operates to emit warm white light, and the brightness of the warm white light changes along with the change of the voltage, at this time, the color temperature is the lowest, for example, about 2500K (the color temperature of the light bar LED 2).

When the input voltage duty cycle diminishes (voltage increase), the average voltage of supply voltage module (VCC) to ground can grow, and slow triode Q1 switches on, and triode Q2 also switches on, and lamp strip LED1, lamp strip LED2 all are in operating condition, and the lamp that just is white can slowly light, and warm white lamp can light, and the colour temperature is the mixed effect of two kinds of lamp pearls this moment, for example 2500K +6500K, and the integrated color temperature is about 4000K.

When the input voltage duty is small to a certain degree (the voltage continues to increase), for example, about 25%, the average voltage of the power supply voltage module (VCC) to the ground is larger, at this time, the transistor Q1 is turned on, the transistor Q2 is turned off, only the light bar LED1 works, the warm and white lamp is turned off, the white lamp continues to be lighted, the brightness of the white lamp changes along with the change of the voltage, and the color temperature at this time is the highest, for example, 6500K.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a novel adjust luminance mixing of colors low pressure LED lamp strip which characterized in that:

this novel mixing of colors low pressure LED lamp strip of adjusting luminance includes:

the cold color LED module is used for emitting cold color light;

the warm color LED module is used for emitting warm color light;

2. The novel dimming and color-adjusting low-voltage LED light bar as claimed in claim 1, wherein the driving module comprises a resistor R1, a resistor R2, a capacitor C1, a transistor Q1, a resistor R7, a transistor Q2, a resistor R3 and a resistor R4, one end of the resistor R1 is connected with the resistor R3, the resistor R4 and the power supply voltage module, the other end of the resistor R1 is connected with the base of a transistor Q1, the resistor R2 and the capacitor C1, the other end of the resistor R2 is grounded, the other end of the capacitor C1 is grounded, the emitter of the transistor Q1 is grounded, the collector of the transistor Q1 is connected with the other end of the resistor R3, the resistor R7 and the cold-color LED module, the other end of the resistor R7 is connected with the other end of the resistor R4, the base of the transistor Q2, the emitter of the transistor Q2 is grounded, and the collector of the transistor Q2 is connected with the warm-color LED module.

3. The novel dimming and color-adjusting low-voltage LED light bar as claimed in claim 1, wherein the cold-color LED module comprises a light bar LED1 and a resistor R5, one end of the light bar LED1 is connected with the power supply voltage module, the other end of the light bar LED1 is connected with a resistor R5, and the other end of the resistor R5 is connected with the driving module.

4. The novel dimming and color-adjusting low-voltage LED light bar as claimed in claim 1, wherein the warm-color LED module comprises a light bar LED2 and a resistor R6, one end of the light bar LED2 is connected with the power supply voltage module, the other end of the light bar LED2 is connected with a resistor R6, and the other end of the resistor R6 is connected with the driving module.

5. The novel dimming and color-adjusting low-voltage LED light bar as claimed in claim 2, wherein the transistors Q1 and Q2 are NPN transistors.