CN202171160U - LED desk lamp with adjustable color temperature - Google Patents

Abstract

The utility model relates to an LED lamp, which belongs to the field of energy-saving lighting products. An LED desk lamp with adjustable color temperature, comprising an LED luminous tube (1) of red, yellow and blue primary colors, an LED drive controller (2) for driving the LED luminous tube (1) and a power switch (3), characterized in that it also includes a color temperature Sensing module (4), the color temperature sensing module (4) is to select various white light colors and yellow light colors from bright white to deep yellow, the signal receiving module of the microprocessor (5) receives the color temperature sensing module (4) The transmitted color signal is transmitted to each LED drive controller (2) through the color decomposition and synthesis module of the microprocessor (5), and the LED drive controller (2) changes the LED light-emitting tube (1) The drive current controls the color brightness. The desk lamp of the utility model adds a color temperature adjustment mode, which provides users with a more humanized and warm light adjustment mode.

Description

A color temperature adjustable LED desk lamp

technical field

The utility model relates to an LED desk lamp, in particular to an LED desk lamp with adjustable color temperature.

Background technique

Most of the LED desk lamps currently on the market use monochromatic white LEDs as light sources. Although energy saving and environmental protection have been greatly improved compared with traditional light sources, there are disadvantages such as unadjustable coloring temperature, narrow spectrum, and low color rendering. At the same time, this type of desk lamp has a single function and is only used for white light illumination.

Our company has previously applied for a utility model patent for a full-color LED lamp. When this full-color lamp solution is applied to a desk lamp, an LED desk lamp with full-color display can be produced, which makes the desk lamp more functional and can be used as a colored lamp. However, because of the different positions of the desk lamps, such as the desk lamps in the living room and the living room, the way of application is often very different from people's requirements for lighting. The desk lamps in the living room need to have a variety of color effects, while the desk lamps in the living room often need It is a calming and warm light. Full-color lamps can satisfy a variety of colors and color transformations, and can be used in the living room to have a good effect. However, the living room does not often need a lot of changing colors. It mainly needs cold white light or warm halo yellow light. It plays the role of lighting and adjusting mood, but the full-color lamp does not have the effect of adjusting the color temperature so that it cannot adjust the warm and cold tones in the living room through the light.

Contents of the invention

The technical problem to be solved by the utility model is to provide an LED desk lamp with adjustable color temperature, which solves the defect that the current LED desk lamp does not have the function of adjusting the color temperature.

Technical solutions

An LED desk lamp with adjustable color temperature, comprising red, yellow and blue LED light-emitting tubes, an LED drive controller and a power switch for driving the LED light-emitting tubes. The signal receiving module of the microprocessor receives the color signal transmitted by the color temperature sensing module, and the color decomposition and synthesis module of the microprocessor sends the control signals to the three-primary-color LED light-emitting tubes respectively. Each LED drive controller, the LED drive controller controls the brightness of the LED light-emitting tube by changing the driving current of the LED light-emitting tube.

The color temperature sensing module adopts strip-shaped capacitive sensing touch electrodes.

It also includes a color sensing module, the color sensing module is for selecting various colors of full color, is connected with the signal receiving module of the microprocessor, and sends color signals to the microprocessor.

The color sensing module adopts strip-shaped capacitive sensing touch electrodes.

The power switch includes a transfer switch and a function selection switch, the transfer switch is connected with the power supply and the function selection switch respectively, the function selection switch is connected with the signal receiving module of the microprocessor, and selects the color signal transmitted by the color temperature sensing module or the color signal transmitted by the color sensing module. color signal.

Beneficial effect

The color temperature adjustable LED desk lamp of the utility model adds a color temperature adjustment mode, which provides a more humanized and warm light adjustment mode for the users of the desk lamp. After integrating the full-color light adjustment mode, the desk lamp of the utility model can be applied to various places, the scope of application is wider.

Description of drawings

Fig. 1 is the principle schematic diagram of the utility model.

Fig. 2 is a schematic diagram of the touch electrode panel of the present invention.

Among them: 1-LED light-emitting tube, 2-LED drive controller, 3-power switch, 4-color temperature sensing module, 5-microprocessor, 6-color sensing module.

Detailed ways

Below in conjunction with specific embodiment and accompanying drawing, further elaborate the utility model.

An LED desk lamp with adjustable color temperature, comprising an LED luminous tube 1 of three primary colors of red, yellow and blue, an LED drive controller 2 for driving the LED luminous tube 1, a power switch 3, and a color temperature sensing module 4, the color temperature sensing module 4 is optional Various white light colors and yellow light colors ranging from bright white to dark yellow, the signal receiving module of the microprocessor 5 receives the color signal transmitted by the color temperature sensing module 4, and transmits the control signals through the color decomposition and synthesis module of the microprocessor 5 To each LED drive controller 2 that drives the LED light-emitting tubes 1 of the three primary colors, the LED drive controller 2 changes the driving current of the LED light-emitting tubes 1 to control the brightness of the three LED light-emitting tubes by collecting the PWM signal sent by the microprocessor 5 .

The color temperature sensing module 4 adopts strip-shaped capacitive sensing touch electrodes.

Integrating the color sensing module 6 again, the color sensing module 6 also adopts strip-shaped capacitive sensing touch electrodes, and the color sensing module 6 is connected with the signal receiving module of the microprocessor 5 for selecting various colors of full colors, and sends Color signal to microprocessor 5.

The power switch 3 includes a changeover switch and a function selection switch, the changeover switch is connected with the power supply and the function selection switch respectively, the function selection switch is connected with the signal receiving module of the microprocessor 5, and selects the color signal or color sensor delivered by the color temperature sensing module 4 The color signal delivered by module 6.

As shown in FIG. 1 , the microprocessor 5 is used for collecting, processing and analyzing the touch sensing signal and the state of the power switch button, and outputting the PWM signal. The touch sensing electrodes and the microprocessor 5 are arranged on the PCB board, the plastic panel and the PCB board are tightly bonded together, and the color patterns of the two modules are printed on the panel corresponding to the positions of the touch sensing electrodes, as shown in Figure 2 . When the finger is on the sensing panel corresponding to the touch sensing electrode, the charge on the sensing electrode changes, the microprocessor 5 collects the signal, processes and analyzes it, and outputs a PWM control signal.

The LED drive controller 2 receives the PWM signal output by the microprocessor 5 on the PCB, and adjusts the current size of the driving LED light-emitting tube 1 according to the duty ratio of the PWM signal, so that the brightness of the red, green, and blue LED light-emitting tubes 1 is increased. change accordingly

Referring to Figure 2, the power switch key is also responsible for function selection: press it to turn on the light; press it again to turn off the light; when the light is turned on, press and hold until the color of the light body changes, realizing both color temperature adjustment and color adjustment. and the slider sensor electrode: when in the color temperature adjustment mode, lightly touch the slider sensor panel with the fingertip, and the light body will display the color temperature of the color temperature indicator bar where the finger is located; when in the color adjustment mode, tap the fingertip Touch the slider sensor panel, and the light body will display the color of the color indicator bar where the finger is located.

The utility model overcomes the defects existing in the existing LED desk lamp, significantly improves the color rendering of the light, endows the LED desk lamp with more functions, enables the color temperature to be selected according to the user's preference or environment, and can also change different colors at the same time , for decorative lighting. Combined with the high-resolution performance of capacitive sensing touch technology, a new way of adjusting and dimming is provided, and users can quickly and accurately select the desired color and color temperature.

The utility model adopts the non-contact capacitive induction control technology combined with the principle of light mixing of three primary colors, which is safe and reliable in use, simple and novel in structure, full of fun, and easier to realize the finalization of beautifully designed products. The lamps of this solution can be conveniently and quickly applied to other types of LED lamps, such as indoor lighting lamps, ceiling lamps, wall lamps and the like. The sound control function can also be added on the basis of the existing lamps, and various colors can be changed with the music. In addition, the illuminant used in this solution is a high-power LED light-emitting tube 1, which is energy-saving, environmentally friendly, low-carbon, and has a very broad market application prospect.

Claims (5)

1. a kind of color temperature adjustable LED desk lamp, comprise the LED luminous tube (1) of three primary colors of red, yellow and blue, drive the LED drive controller (2) and power switch (3) of LED luminous tube (1), it is characterized in that: also Including a color temperature sensing module (4), the color temperature sensing module (4) is for selecting various white light colors and yellow light colors from bright white to deep yellow, and the signal receiving module of the microprocessor (5) receives the color temperature sensing module ( 4) The transmitted color signal is transmitted to each LED drive controller (2) of the LED light-emitting tube (1) driving the three primary colors through the color decomposition and synthesis module of the microprocessor (5), and the LED drive controller (2) Controlling the brightness of the LED light emitting tube (1) by changing the driving current of the LED light emitting tube (1). 2. The LED table lamp with adjustable color temperature according to claim 1, characterized in that: the color temperature sensing module (4) adopts strip-shaped capacitive sensing touch electrodes. 3. The LED desk lamp with adjustable color temperature as claimed in claim 1 or 2, is characterized in that: it also includes a color sensing module (6), and the color sensing module (6) is for selecting various colors of full colors, and the micro-processing The signal receiving module of the device (5) is connected, and the color signal is sent to the microprocessor (5). 4. The LED desk lamp with adjustable color temperature according to claim 3, characterized in that: the color sensing module (6) adopts strip-shaped capacitive sensing touch electrodes. 5. The LED desk lamp with adjustable color temperature as claimed in claim 3, characterized in that: the power switch (3) includes a transfer switch and a function selection switch, the transfer switch is connected to the power supply and the function selection switch respectively, and the function selection switch is connected to the micro The signal receiving module of the processor (5) is connected to select the color signal transmitted by the color temperature sensing module (4) or the color signal transmitted by the color sensing module (6).

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