CN2686273Y - Digital stepless light variable lamps - Google Patents

Abstract

The utility model discloses a digital stepless dimming lamp. It includes red, green and blue light emitters and a control circuit, wherein a red light emitter (1), a green light emitter (2) and a blue light emitter (3) form a group and are arranged together. Each group of illuminants is evenly distributed on a cylinder in a cross shape, and is enclosed in a translucent lampshade (4). The control circuit contains at least one single-chip microcomputer, and the I/O interfaces of the single-chip microcomputer are in groups of three, which are correspondingly connected with a group of illuminants; wherein one I/O interface in each group is respectively connected to the base of a triode through a resistor, The collector of the triode is connected to one of the light emitters. The digital stepless dimming lamp can realize gradual and continuous dimming, and has the advantages of rich colors and smooth changes. It can generate a variety of colorful and complex light-changing patterns, which are highly ornamental.

Description

Digital Stepless Dimming Lamps

technical field

The utility model relates to a lamp, in particular to a lamp which is controlled by a digital method and can realize stepless dimming, and belongs to the technical field of lighting equipment.

Background technique

In recent years, with the continuous development of urban construction, people have put forward higher and higher requirements for night scene lighting. New types of lamps such as floodlights and fireworks lamps have begun to be widely used in large and medium-sized cities, among which colored lamps with color-changing functions are especially favored by people.

As shown in Figure 1, this colored lamp with color-changing function is generally composed of three illuminants, red, green, and blue, which are enclosed in a translucent lampshade. The illuminants can be colored neon lights, colored LEDs or colored bulbs, etc. The principle of its discoloration is to control the red, green, and blue luminous bodies separately through control components such as relays, so that each luminous body can change its luminous time and luminous intensity in a certain way, for example, turn on the red luminous body and turn off the green luminous body at the same time. , or turn on the green illuminant and turn off the red illuminant at the same time, thereby realizing the function of changing light from red to green or from green to red. Dimming in other ways is also based on the above principles.

At present, there are already many colored lights or colored light systems on the market that can realize the dimming function, the typical ones include the Chinese utility model patent "full-color dimming light" (patent number: ZL 01219368), "a kind of light that can be freely Color-changing light-emitting device and full-color lamp" (patent number: ZL 01263079), "color-changing digital lamp" (patent number: ZL 02276322), invention patent application "a color-controllable color lamp" (patent application number: 02136540 )wait. Their working principles are similar, and the only difference is the difference in the luminous body or the control circuit. These designs more or less have defects such as unsmooth color change, complex circuit structure, and limited color change types, and there is still a need for further improvement.

Contents of the invention

The purpose of the utility model is to provide a new digital stepless dimming lamp. The luminaire adopts advanced digital circuit to control the luminescence of the luminous body, and can realize color changes in various modes, and the color changes are gradual and continuous.

To achieve above-mentioned purpose, the utility model adopts following technical scheme:

A digital stepless dimming lamp, including red, green, blue illuminants and a control circuit, is characterized in that:

A red light emitter, a green light emitter and a blue light emitter form a group and are arranged together; each group of light emitters is evenly distributed on a column in a cross shape; the light emitters are enclosed in a translucent lampshade ;

The control circuit includes at least one single-chip microcomputer, and the I/O interfaces of the single-chip microcomputer are in groups of three, which are correspondingly connected with a group of light emitters; wherein one I/O interface in each group is respectively connected to a triode through a resistor The base of the triode is connected to one of the light emitters.

The digital stepless dimming lamp described in the utility model can realize gradual and continuous dimming. The color of the lamp changes from one color to another after a series of intermediate transition colors, so it has the advantages of rich colors and smooth changes. It can generate a variety of colorful and complex light-changing patterns, which are highly ornamental.

Description of drawings

The specific implementation of the utility model will be further described below in conjunction with the accompanying drawings and specific examples.

Fig. 1 is a structural schematic diagram of an existing full-color dimming lamp (patent number: ZL 01219368).

Fig. 2 is a schematic structural diagram of an embodiment of the digital stepless dimming lamp.

FIG. 3 is a schematic diagram of a control circuit used in the digital stepless dimming lamp.

Detailed ways

As shown in FIG. 2 , in this embodiment, a red LED1 , a green LED2 , and a blue LED3 form a group, arranged in a row up and down. Each group of LEDs is arranged in a "ten" shape and evenly distributed on a column. Each LED is enclosed in a translucent lampshade 4 . The translucent lampshade is an essential component as a projection and superimposition carrier of primary color light. Only in this way, the primary color light emitted by each LED will be superimposed on the lampshade to form a complex color light, and be observed through the lampshade. Otherwise, the light emitted by each illuminant is directly projected into the eyes of the observer, and what is seen is still the primary color light emitted by each illuminant.

Different from the distribution of the illuminants of the existing light-changing lights, in the utility model, three LEDs of different colors are arranged side by side to form a group, and each group of LEDs is evenly arranged in a "ten" shape. The method is very suitable for the structure of the columnar lamp body, and the light of various colors is mixed evenly, and the color is natural.

Fig. 3 is the schematic diagram of the control circuit used in the utility model. In the utility model, the control circuit is built with the single-chip microcomputer PIC16C64 as the center. PIC16C64 is a mid-range 8-bit microcontroller belonging to the PIC16CXX series. It has 40 pins, 33 of which are bidirectional I/O interfaces and 1 pin is a parallel 8-bit interface. In addition, it It also has 2048×14-bit EPROM program memory, which can be used to store pre-programmed work programs; 16-bit timer/counter; synchronous serial interface; 8 internal and external interrupt sources, and its working clock frequency can be from DC to 20MHz . In Figure 3, pin 1 of PIC16C64 is connected to the switch SW-PB; pins 13 and 14 are connected to the crystal oscillator circuit to obtain a stable operating frequency; the rest of the bidirectional I/O interfaces are shown in the figure, and each 3 is a group , each I/O interface is respectively connected to the base of a triode (BD441) through a resistor, and the collector of the triode is connected to an LED, and the I/O interface outputs a voltage signal to the base, by adjusting the voltage signal The waveform can control the on and off status of the LED. The 3 I/O ports in each group are respectively connected to LEDs of different colors. In the embodiment shown in Figure 3, a PIC16C64 single-chip microcomputer controls the on-off state of 8 groups of 24 LEDs in total. The connection method in this embodiment is called one-dimensional control mode. If the above-mentioned groups of bidirectional I/O interfaces are divided into two parts on average, after the bidirectional I/O interfaces of one part are connected with the LEDs respectively, the bidirectional I/O interfaces of the other part are also connected with the above-mentioned LEDs respectively, so that The on and off of an LED is controlled by two bidirectional I/O interfaces. This method is called two-dimensional cross control mode. By analogy, there can also be three-dimensional control modes, four-dimensional control modes, etc. The advantage of these multi-dimensional control modes is that more complex lighting control can be achieved.

If the number of LEDs is large, a combination of multiple single-chip microcomputers can be used, and each single-chip microcomputer communicates through a synchronous serial interface, and the serial port is connected to a network system at the same time. In this way, the network control of multiple stepless dimming lamps can be realized. This network control feature is very useful for batch installation of the lamps in the square or in the community, because the user can use this to control multiple The luminous characteristics of the lamps are uniformly arranged, which can realize the gorgeous effect of each colored lamp changing color alternately. In addition, the user can also refresh the working program in the EPROM of the single-chip microcomputer through the above-mentioned serial interface, so as to continuously expand the color-changing mode of the color-changing lamp.

In the embodiment shown in Fig. 3, the selected single-chip microcomputer is PIC16C64, but the utility model is not limited to using this type of single-chip microcomputer. In fact, multiple microcontrollers in the PIC16CXX series, such as PIC16C16, PIC16C65, etc., can be used as the control circuit of the present invention.

This digital stepless dimming lamp chooses LED as the illuminant, because the brightness of the LED has a good positive correlation with the input voltage within a certain range, which is convenient for the control circuit to carry out precise digital control, and the LED itself consumes energy Less, can reduce the energy consumption of the whole lamp.

When the utility model is in use, the luminous time and luminous intensity of each luminous body can be precisely controlled according to the dimming mode built in the control circuit, thereby superimposing each primary color light into light of any color. For example, to achieve stepless dimming from red to green is: first superimpose 100% red light with 0% green light, then superimpose 99% red light with 1% green light, and then use 98% red light The light is superimposed with the 2% green light, and so on. In the end, 0% red light and 100% green light are superimposed to complete the stepless light change from red to green. During this process, in addition to the two primary colors of red and green, 98 kinds of multi-color light with different color levels appeared successively, so the dimming color is extremely rich, and the dimming process is smooth and harmonious, which is pleasing to the viewer.

It should be noted that the specific embodiments of the present invention have described the present invention in detail, and for those skilled in the art, it will be obvious to those skilled in the art that it can be carried out without departing from the spirit and scope of the present invention. All changes are within the protection scope of the present utility model.

Claims (6)

1. digital stepless alternating light tool comprises redness, green, blue luminous element and control circuit, it is characterized in that:

An emitting red light body (1), a green emitting body (2) and a blue-light emitting body (3) are formed one group, are arranged in together; Each is organized luminous element and is cross and is evenly distributed on the cylinder; Described luminous element is enclosed in the translucent lampshade (4);

Comprise at least one single-chip microcomputer in the described control circuit, per three of the I/O interface of described single-chip microcomputer is one group, with one group of corresponding connection of luminous element; Wherein an I/O interface in every group connects the base stage of a triode respectively through a resistance, and the collector electrode of this triode links to each other with one of them described luminous element.

2. digital stepless alternating light tool as claimed in claim 1 is characterized in that:

The I/O interface of described single-chip microcomputer is divided at least two the same number of parts, and each part all provides one of them I/O interface to be connected with same luminous element.

3. digital stepless alternating light tool as claimed in claim 1 is characterized in that:

Described luminous element is LED.

4. digital stepless alternating light tool as claimed in claim 1 is characterized in that:

Described single-chip microcomputer is PIC16C64.

5. digital stepless alternating light tool as claimed in claim 4 is characterized in that:

Storage realizes the different working procedures that become optical mode in the EPROM program storage that described single-chip microcomputer PIC16C64 puts within it.

6. digital stepless alternating light tool as claimed in claim 4 is characterized in that:

Communicate by synchronous serial interface between each described single-chip microcomputer PIC16C64.

Images