CN201448787U

CN201448787U - LED lighting system capable of adjusting color temperature automatically

Info

Publication number: CN201448787U
Application number: CN2009200589398U
Authority: CN
Inventors: 樊汉豪
Original assignee: HANRUN ELECTRONICS CO Ltd
Current assignee: HANRUN ELECTRONICS CO Ltd
Priority date: 2009-06-17
Filing date: 2009-06-17
Publication date: 2010-05-05
Anticipated expiration: 2019-06-17

Abstract

The utility model discloses an LED lighting system capable of adjusting the color temperature automatically, which comprises a power supply module, at least one LED module and a control unit, wherein the LED module comprises an LED with three primary colors of red, green and blue, and a current control execution unit; the LED of each color is connected with the current control execution unit in series and then connected with two ends of a power; the control unit comprises a temperature sensor used for sensing the temperature change and a micro control unit (MCU) which calculates the current output ratio based on the temperature; and the current control execution unit receives control signals from the MCU. The system adopts the LED with three primary colors of red, green and blue as a luminous source, and the three colors are matched to generate the light with proper color temperature, and controlled by the control unit, thus ensuring the uniformity of the color temperature; and the temperature sensor can detect temperature signals of the environment, the control unit can automatically adjust the current which is output to the LED with three primary colors according to the temperature signals, and according to the temperature, the color temperature of the light can change automatically so as to be matched with the environment, thus leading people to feel more comfortable.

Description

A kind of LED illuminator that can regulate colour temperature automatically

Technical field

The utility model relates to a kind of LED illuminating product, the particularly a kind of LED illuminator that can regulate colour temperature automatically.

Background technology

Present most LED illuminating product all is to use the LED that emits white light, the LED that emits white light of Chu Shouing mainly is an effect of reaching white light with the fluorescent material that blue chip adds proper proportion again on the market, this technical pattern is simple, technology is comparative maturity, but the photochromic temperature that shortcoming is a product to be sent produces drift along with the aging of material easily, and colour temperature is difficult to control; In addition, the illuminating product develop rapidly so far, the illuminating product that can regulate colour temperature is few, the illuminating product that can regulate colour temperature automatically according to indoor temperature almost is blank.

The utility model content

The purpose of this utility model provides a kind of LED illuminator that can regulate colour temperature automatically, can carry out the adjusting of colour temperature according to environment temperature automatically.

The utility model is that the technical scheme that its problem of solution is adopted is:

A kind of LED illuminator that can regulate colour temperature automatically, comprise power supply module, at least one led module and control module, power supply module offers led module and the required power supply of control module, described led module comprises red, green, blue three-primary color LED and Current Control performance element, the LED of every kind of color with receive both ends of power after the Current Control performance element is connected, described control module comprises and is used for temperature sensor that temperature sensor changes and based on the miniature control module MCU of temperature computation electric current export ratio, the control signal of described MCU outputs in the described Current Control performance element.

The beneficial effects of the utility model are: native system adopts the red, green, blue three-primary color LED as light emitting source, the electric current of control by LED can be set as required, make the three cooperate the light that produces suitable colour temperature, whole controlled process system unit controls, the uniformity of colour temperature is guaranteed; This system also has temperature sensor, can be transferred to the temperature signal of environment in the control module, control module is regulated the electric current that outputs to three-primary color LED automatically according to temperature signal, makes light change colour temperature automatically according to temperature, cooperate with environment facies, make the people feel more comfortable.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples:

Fig. 1 is a theory diagram of the present utility model.

The specific embodiment

With reference to Fig. 1, a kind of LED illuminator that can regulate colour temperature automatically of the present utility model, comprise LED power drives 1, at least one led module 2 and control module 3. power drives 1 convert the civil power of input to suitable DC voltage, and supply with led module 2 and control module 3. described led modules 2 comprise red, green, blue three-primary color LED 21 and Current Control performance element 22, the LED21 of every kind of color with receive both ends of power after Current Control performance element 22 is connected, because LED21 brightness is approximately linear relationship with the size that flows through its electric current, therefore can change the size that flows through its electric current by the Current Control performance element 22 of control series connection with it, thereby regulate LED brightness, can make red-green-blue LED21 obtain required brightness according to this principle, thereby the three cooperates the light that produces different colour temperatures, can realize the illuminating product of difformity or structure by the combination of a plurality of led modules 2. control module 3 comprises temperature sensor 31 and miniature control module MCU32, temperature inductor can the induced environment variation of temperature, MCU32 calculates the electric current export ratio automatically according to temperature signal, the size that control signal acts on Current Control performance element 2 and regulates line current in the led module 2, thereby change the colour temperature that illuminator is sent light, cooperate with environment to make the people feel more comfortable.

Described Current Control performance element 22 is chosen as transistor, and the transistorized control utmost point receives the control signal from control module, and this current control method is simple, and the stool and urine controllable flow that only needs to regulate the transistor controls electrode current is crossed transistorized size of current.

The above-mentioned course of work that can regulate the LED illuminator of colour temperature automatically is: when environment temperature raises gradually, the red-light LED part reduces gradually in the electric current export ratio, the blue-ray LED part increases gradually, correspondingly the brightness of red-light LED reduces gradually, the brightness of blue-ray LED increases gradually, therefore the colour temperature of light raises gradually, adapts with environment temperature.Particularly, when room temperature when 15～25 spend, can regulate colour temperature automatically is 2700～4500K, gives the warm sensation of people; When room temperature when 26～38 spend, can regulate the light color temperature automatically is 4500～6500K, gives the refrigerant sensation of people.

In addition, this illuminator can also be provided with the manual adjustments function.People can according to the individual like selecting the white light of certain color temperature value and the light of various colours, at this moment, control module 3 can be adjusted the electric current export ratio according to user's setting, the light that system is sent satisfies customer requirements.

Claims

1. the LED illuminator that can regulate colour temperature automatically, comprise power supply module (1), at least one led module (2) and control module (3), power supply module (1) offers led module (2) and the required power supply of control module (3), it is characterized in that described led module (2) comprises red, green, blue three-primary color LED (21) and Current Control performance element (22), the LED of every kind of color (21) with receive both ends of power after Current Control performance element (22) is connected, described control module (3) comprises and is used for temperature sensor (31) that temperature sensor changes and based on the miniature control module MCU (32) of temperature computation electric current export ratio, the control signal of described MCU (32) outputs in the described Current Control performance element (22).

2. the LED illuminator that can regulate colour temperature automatically according to claim 1 is characterized in that described electric current performance element (22) is a transistor (T1, T2, T3), and the control signal of described MCU (32) is connected with the control utmost point of transistor (T1, T2, T3).