CN211656464U - Lamp and control circuit thereof - Google Patents

Abstract

The embodiment of the utility model discloses a lamp and a control circuit thereof, wherein the lamp control circuit comprises a decoder, a controller for sending control signals and a constant current drive circuit for outputting electric energy outwards; the first end of the decoder is connected with the controller to decode the control signal, and the second end of the decoder outputs a plurality of paths of decoded control signals; and the first end of the constant current driving circuit is connected with the second end of the decoder and drives the constant current driving circuit to output multiple paths of electric energy outwards through the multiple paths of decoded control signals. The utility model discloses lamps and lanterns and control circuit thereof can promote the grey scale of LED lamps and lanterns, realize that LED lamps and lanterns rich colorful dynamic photochromic change effect and diversified image present.

Description

Lamp and control circuit thereof

Technical Field

The utility model belongs to the technical field of the illumination, especially, relate to a lamps and lanterns and control circuit thereof.

Background

The LED light source is widely applied to the illumination field at the present stage due to the advantages of small volume, low energy consumption, green and environmental protection and the like.

At present, the LED landscape lamp generally uses the three primary colors of red, green and blue of the LED light source to make the three colors have 256 gray levels under the control of the computer technology, so as to form a combination of different light colors. However, the color change of the 256-level gray scale is limited, and the rich dynamic color change effect and the diversified image display of the LED lamp cannot be realized.

SUMMERY OF THE UTILITY MODEL

In view of this, the embodiment of the present invention provides a lamp and a control circuit thereof, for solving the technical problems that the dynamic light color change effect is poor and the image is single due to low gray scale of the LED lamp at the present stage.

In a first aspect, an embodiment of the present invention provides a lamp control circuit, which includes:

a controller for issuing a control signal;

the first end of the decoder is connected with the controller to decode the control signal, and the second end of the decoder outputs a plurality of paths of decoded control signals;

and the first end of the constant current driving circuit is connected with the second end of the decoder and drives the constant current driving circuit to output multiple paths of electric energy outwards through the multiple paths of decoded control signals.

Further, the second end of the decoder outputs four decoded control signals to the constant current driving circuit.

Further, the four decoded control signals are red, green, blue and white pulse width modulation control signals, respectively.

Further, the controller includes a DMX512 controller for issuing DMX512 control signals.

Furthermore, a UCS512D-H decoding chip is arranged in the decoder.

Furthermore, an MBI6662 driving chip is arranged in the constant current driving circuit.

Furthermore, a PT4115E driving chip is arranged in the constant current driving circuit.

Furthermore, a DIM pin is arranged on the MBI6662 driving chip.

Furthermore, a DIM pin is arranged on the PT4115E driver chip.

In a second aspect, the present invention provides a lamp, including:

the lamp control circuit described in any of the above;

and the LED light source board is connected with the output end of the constant current driving circuit of the lamp control circuit.

The embodiment of the utility model provides a lamps and lanterns and control circuit thereof decodes the control signal after the output multichannel is decoded to the control signal of controller through the decoder to carry out multichannel output circuit's power drive to constant current drive circuit, and then promote the grey scale of LED lamps and lanterns, realize that LED lamps and lanterns rich colorful dynamic photochromic change effect and diversified image are shown.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic diagram of a square frame structure of a lamp control circuit according to an embodiment of the present invention;

fig. 2 is a schematic view of a square frame structure of a lamp according to an embodiment of the present invention;

fig. 3 is a schematic view of another square frame structure of a lamp according to an embodiment of the present invention;

fig. 4 is a schematic circuit structure diagram of a lamp control circuit according to an embodiment of the present invention;

fig. 5 is a schematic diagram of another circuit structure of a lamp control circuit according to an embodiment of the present invention.

Detailed Description

The following detailed description will be made with reference to the accompanying drawings and examples, so that how to implement the technical means of the present invention to solve the technical problems and achieve the technical effects can be fully understood and implemented.

As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect. Furthermore, the terms "coupled" or "electrically connected" are intended to encompass any direct or indirect electrical coupling. Thus, if a first device couples to a second device, that connection may be through a direct electrical coupling or through an indirect electrical coupling via other devices and couplings. The following description is of the preferred embodiment of the present invention, and is made for the purpose of illustrating the general principles of the invention and not for the purpose of limiting the invention. The protection scope of the present invention is subject to the limitations defined by the appended claims.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

Please refer to fig. 1, which is a block diagram of a lamp control circuit according to an embodiment of the present invention, wherein the lamp control circuit at least includes a controller 10, a decoder 20, and a constant current driving circuit 30.

Generally, the lamp control circuit further includes an external power source electrically connected to the constant current driving circuit 30, and the external power source is used for providing electric energy support for the whole circuit. Here, the external power source includes, but is not limited to, a commercial power source, or may be an uninterruptible power supply UPS or the like.

The controller 10 is connected to the decoder 20, where the connection is mainly electrically connected to satisfy the requirement that the controller 10 transmits a corresponding control signal to the decoder 20, and the controller 10 is mainly a control chip storing a computer program, and can send the control signal outwards according to the setting of the computer program, that is, transmit the control signal to the decoder 20.

A first end of the decoder 20 is connected to the controller 10, and is configured to receive the control signal transmitted by the controller 10, where the decoder 20 is mainly a decoding chip storing a corresponding computer program, and is configured to decode the received control signal, and output a plurality of channels of decoded control signals from a second end of the decoder 20 after decoding, that is, the decoder 20 may decode the control signal into a plurality of channels of control signals, and then transmit the control signals to the constant current driving circuit 30 through an output end (a second end) of the decoder 20.

The first end of the constant current driving circuit 30 is connected to the output end (the second end) of the decoder 20, and receives the multiple decoded control signals, where the constant current driving circuit 30 is mainly a driving chip storing a computer program, and the driving chip drives the external power supply to output multiple paths of electric energy outwards through the multiple decoded control signals.

When using, please combine fig. 2, for the utility model provides a square frame structure schematic diagram of lamps and lanterns, lamps and lanterns include above lamps and lanterns control circuit and LED light source board 40, and here lamps and lanterns include but restrict to be LED landscape lamp, LED curtain wall lamp and LED stage lamp etc..

The LED light source board 40 is connected to an output end (a second end) of the constant current driving circuit 30 in the lamp control circuit, where the connection is mainly an electrical connection, so that multiple paths of electrical energy output by the constant current driving circuit 30 can light up the LED light source of the LED light source board 40.

The LED light source board 40 generally includes a substrate and a plurality of LED light beads, and the LED light beads are generally arranged on the substrate in an array manner.

Further, please refer to fig. 3, which is a schematic diagram of another square frame structure of the lamp provided in the embodiment of the present invention, the lamp further includes a housing 50, the housing 50 is that the lamp control circuit at least includes the controller 10, the decoder 20, the constant current driving circuit 30 and the housing of the LED light source board 40, the light emitting surface of the LED light source board 40 is located on the surface of the housing 50, so that the LED light source board 40 projects light to the outside of the lamp when emitting light, the external power source passes through the electric lead, and the housing 50 is electrically connected to the input end of the constant current driving circuit 30.

In the prior art, a single decoded control signal enables fewer driving circuits to be output by the driving circuit, so that lamps can form fewer different light color combinations, and generally have 256 gray levels; the embodiment of the utility model provides a lamps and lanterns and control circuit thereof, through decoder 20 decodes output multichannel control signal, and then drives through multichannel control signal constant current drive circuit 30 outwards exports multichannel electric energy, increases the photochromic combination of lamps and lanterns can reach the grey scale that is bigger than 256, realizes the rich colorful dynamic photochromic change effect of lamps and lanterns and diversified image are shown, promote the use of lamps and lanterns is experienced.

In addition, please refer to fig. 4 and fig. 5, which are schematic circuit structure diagrams of a lamp control circuit according to an embodiment of the present invention, respectively, wherein the second end of the decoder 20 outputs four decoded control signals to the constant current driving circuit 30.

Specifically, after the control signal of the controller 10 reaches the decoder 20, the decoder 20 digitally decodes the control signal to form four paths of control signals, and outputs the four paths of control signals to the constant current driving circuit 30.

Further, the four decoded control signals herein include, but are not limited to, a red pwm control signal, a green pwm control signal, a blue pwm control signal, and a white pwm control signal. The four pulse width modulation control signals respectively control the on-off and output quantity of three primary colors (red, green and blue) and white light, so that the light has rich and colorful dynamic light color change effect, and further can present diversified graphic images.

Further, the controller 10 includes a DMX512 controller 110 for issuing DMX512 control signals.

Specifically, the DMX512 controller 110 is a control chip capable of executing a DMX512 protocol, and signals of the DMX512 controller are transmitted based on differential voltage, so that the DMX512 controller has good anti-interference capability and improves reliability of lamp control; and the lamp can be transmitted in a long distance, and the use scene of the lamp can be expanded.

In addition, a UCS512D-H decoding chip 210 is disposed in the decoder 20, the UCS512D-H decoding chip 210 can decode the control signal sent by the DMX512 controller 110, the decoded control signal is a multi-channel control signal, and is output from the second end of the UCS512D-H decoding chip 210 to the constant current driving circuit 30.

Specifically, the output of the port of the UCS512D-H decoding chip 210 adopts a dedicated T-PWM spread spectrum technique, and the refresh frequency is as high as 4K, T-PWM: 65536 gray scale, wherein 1 st level 250HZ, 2 nd level: 500 HZ; and 4, stage: 1 KHZ; stage 8: 2 KHZ; stage 16: 4 KHZ. While the grey scale of the current decoding chip is only 256. The control signals decoded by the UCS512D-H decoding chip 210 include, but are not limited to, a red pwm control signal, a green pwm control signal, a blue pwm control signal, and a white pwm control signal. The four pulse width modulation control signals respectively control the on-off and output quantity of three primary colors (red, green and blue) and white light, so that the light has rich and colorful dynamic light color change effect, and further can present diversified graphic images.

Further, referring to fig. 5, in a preferred embodiment of the present invention, a PT4115E driving chip 320 is disposed in the constant current driving circuit 30, where the PT4115E driving chip 320 drives the external power source by the decoded control signals and outputs multiple paths of electric energy.

Specifically, a plurality of output circuits driven by the PT4115E driver chip 320 are respectively connected to the cathodes of the LED light source boards 40, and the anodes of the LED light source boards 40 share one output anode. The LED light source board 40 may be divided into four groups of red, green, blue and white light sources, which share a positive electrode, but negative electrodes of the four groups of light sources are respectively connected to negative electrodes of a plurality of output circuits outputted from the PT4115E driver chip 320.

In addition, referring to fig. 4, in another preferred embodiment of the present invention, an MBI6662 driving chip 310 is disposed in the constant current driving circuit 30, where the MBI6662 driving chip 310 drives the external power source by the multi-channel decoded control signal and outputs multi-channel power outwards.

Specifically, the output circuits driven by the MBI6662 driving chip 310 are respectively connected to the cathodes of the LED light source boards 40, and the anodes of the LED light source boards 40 share one output anode. The LED light source board 40 may be divided into four groups of red, green, blue and white light sources, and the four groups of light sources share one positive electrode, but the negative electrodes of the four groups of light sources are respectively connected to the negative electrodes of the plurality of output circuits outputted from the MBI6662 driving chip 310.

Further, DIM pins are arranged on both the MBI6662 driver chip 310 and the PT4115E driver chip 320. Specifically, the MBI6662 driver chip 310 and the PT4115E driver chip 320 can perform corresponding dimming control by connecting the DIM pin to the pwm signal output by the decoder 20.

In addition, in a normal case, the driving current of the MBI6662 driver chip 310 is 2A, and the driving current of the PT4115E driver chip 320 is 1.5A, that is, the load carrying capability of the MBI6662 driver chip 310 is the load carrying capability of the PT4115E driver chip 320, and the constant current driver circuit 30 with the MBI6662 driver chip 310 is preferably used in an actual lamp, so that the operational performance of the lamp can be further improved.

It should be noted that, the embodiment of the present invention provides a lamp including the lamp control circuit, if the embodiment encounters the situation that unclear parts can refer to each other, and under the situation that the structures do not conflict with each other, the structures of the portions mentioned in the above embodiments can be combined with each other, for avoiding repetition, the technical solution obtained after combination is not repeated herein, but the technical solution obtained after combination also should belong to the protection scope of the present invention.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (10)

1. A lamp control circuit, comprising:

a controller for issuing a control signal;

the first end of the decoder is connected with the controller to decode the control signal, and the second end of the decoder outputs a plurality of paths of decoded control signals;

and the first end of the constant current driving circuit is connected with the second end of the decoder and drives the constant current driving circuit to output multiple paths of electric energy outwards through the multiple paths of decoded control signals.

2. The lamp control circuit of claim 1, wherein the second terminal of the decoder outputs four decoded control signals to the constant current driving circuit.

3. The luminaire control circuit of claim 2 wherein the decoded four control signals are red, green, blue and white pulse width modulated control signals, respectively.

4. The luminaire control circuit of claim 1 wherein the controller comprises a DMX512 controller for issuing DMX512 control signals.

5. The luminaire control circuit of claim 1 wherein a UCS512D-H decoding chip is provided within the decoder.

6. The lamp control circuit of claim 5, wherein an MBI6662 driver chip is disposed in the constant current driver circuit.

7. The lamp control circuit according to claim 5, wherein a PT4115E driving chip is disposed in the constant current driving circuit.

8. The lamp control circuit of claim 6, wherein said MBI6662 driver chip is provided with DIM pin.

9. The lamp control circuit of claim 7, wherein the PT4115E driver chip is provided with DIM pins.

10. A light fixture, comprising:

the luminaire control circuit of any of claims 1-9;

and the LED light source board is connected with the output end of the constant current driving circuit of the lamp control circuit.

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