CN212367596U

CN212367596U - PWM extended channel module of LED lamp

Info

Publication number: CN212367596U
Application number: CN202021316036.8U
Authority: CN
Inventors: 胡波; 隆新级; 彭信建
Original assignee: Foshan Yinhe Lanjing Technology Co ltd
Current assignee: Foshan Yinhe Lanjing Technology Co ltd
Priority date: 2020-07-08
Filing date: 2020-07-08
Publication date: 2021-01-15
Anticipated expiration: 2030-07-08

Abstract

The utility model discloses a LED lamps and lanterns PWM extension passageway module. The circuit comprises a decoding circuit board and a load circuit board, wherein the decoding circuit board is provided with a decoding circuit, the decoding circuit comprises a control chip circuit and a reverse polarity circuit, the control chip circuit receives TTL signals and outputs reverse PWM signals to the reverse polarity circuit, and the reverse polarity circuit converts the reverse PWM signals and outputs forward PWM signals to a light source driving circuit. The utility model discloses LED lamps and lanterns PWM extension passageway module, only need add a control singlechip in the front of the module, then can realize the effect of many pixel point control, how many pixel points are needed, just add the module of corresponding pixel point number can, the chip that this module chooseed for use is ordinary integrated chip, the cost is far less than singlechip or integrated control chip, can reduce cost effectively, decoding circuit board adopts the integrated scheme design moreover, can reduce load circuit board PCB design cycle and the design degree of difficulty, practice thrift circuit design space.

Description

PWM extended channel module of LED lamp

Technical Field

The utility model relates to a LED drive power supply field, in particular to LED lamps and lanterns PWM extension passageway module.

Background

In the prior art, the design of the DMX512 multi-section high-power control lamp is based on a master control single chip microcomputer and a constant current chip, or a master control integrated chip and a constant current chip, and when high-power multi-pixel point control is to be realized, each pixel point needs one master control single chip microcomputer or one master control integrated chip, so that the cost is high, the circuit design needs a larger space, and the function realization performance is poor.

The technical problem to be solved by the application is as follows: the high-power LED color light lamp has the defects of high cost and large space required by design due to multiple pixel points.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a low cost, high density height integrated LED lamps and lanterns PWM extension passageway module.

In order to achieve the above object, the utility model discloses a following technical scheme, LED lamps and lanterns PWM extension passageway module, including decoding circuit board and load circuit board, decoding circuit board is equipped with decoding circuit, and load circuit board integration has LED glory lamps and lanterns and light source drive circuit, and decoding circuit includes control chip circuit and polarity reversal circuit, and control chip circuit receives the TTL signal and exports reverse PWM signal to polarity reversal circuit, and polarity reversal circuit conversion reverse PWM signal exports forward PWM signal to light source drive circuit.

The utility model discloses LED lamps and lanterns PWM extension passageway module, only need add a control singlechip in the front of the module, then can realize the effect of many pixel point control, how many pixel points are needed, just add the module of corresponding pixel point number can, the chip that this module chooseed for use is ordinary integrated chip, the cost is far less than singlechip or integrated control chip, can reduce cost effectively, decoding circuit board adopts the integrated scheme design moreover, can reduce load circuit board PCB design cycle and the design degree of difficulty, practice thrift circuit design space.

In some embodiments, the decoding circuit board and the load circuit board are connected through pins, one end of each pin is electrically connected with the output end of the reverse polarity circuit, the other end of each pin forms a bent surface and is attached to the surface of the load circuit board, and the bent surface of each pin is electrically connected with the PWM input end of the light source driving circuit.

In some embodiments, the control chip circuit is provided with an integrated chip U1, a sixth pin of the integrated chip U1 is connected with TTL signal access, and a fifth pin of the integrated chip U1 outputs TTL signals to other decoding circuit boards.

In some embodiments, the seventh pin of the integrated chip U1 is provided with a zener diode ZD 1.

In some embodiments, the reverse polarity circuit includes an NPN transistor, a C-pole of the NPN transistor is connected to the control chip circuit, a B-pole of the NPN transistor is connected to the light source driving circuit, and an E-pole of the NPN transistor is grounded.

In some embodiments, the integrated chip U1 is model UCS 8904B.

In some embodiments, the reverse PWM signal and the forward PWM signal are both four-way, and the four-way reverse PWM signal and the forward PWM signal have a gray scale level of 65536.

The utility model has the advantages that: the utility model discloses LED lamps and lanterns PWM extension passageway module through setting up the control chip circuit, accepts to handle and transmits the TTL signal, generates reverse PWM signal to turn into the PWM signal of constant current chip homopolar in the power drive circuit through the antipole circuit, through row needle input power drive circuit, realize the effect of powerful many pixel point control.

Drawings

Fig. 1 is a logic circuit intention of the LED lamp PWM expansion channel module of the present invention;

fig. 2 is an external structural schematic diagram of the PWM extended channel module of the LED lamp of the present invention;

FIG. 3 is a schematic diagram of the circuit principle of the control chip circuit of the present invention;

fig. 4 is a schematic diagram of the circuit principle of the reverse polarity circuit of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 2, the LED lamp PWM extension channel module includes a decoding circuit board 1 and a loading circuit board 2, the decoding circuit board 1 is provided with a decoding circuit, the loading circuit board 2 is integrated with an LED color light lamp and a light source driving circuit, the decoding circuit includes a control chip circuit and a reverse polarity circuit, the control chip circuit receives TTL signals and outputs reverse PWM signals to the reverse polarity circuit, the reverse polarity circuit converts the reverse PWM signals and outputs forward PWM signals to the light source driving circuit, the decoding circuit board 1 and the loading circuit board 2 are connected through a pin header 3, one end of the pin header 3 is electrically connected with an output end of the reverse polarity circuit, the other end of the pin header 3 forms a bending surface and is attached to the surface of the loading circuit board 2, and the bending surface of the pin header 3 is electrically connected with a PWM input end of.

As shown in fig. 3, the control chip circuit is provided with an integrated chip U1, the model of the integrated chip U1 is UCS8904B, a sixth pin of the integrated chip U1 is connected to TTL signals for access, a fifth pin of the integrated chip U1 outputs TTL signals to other decoding circuit boards 1, and a seventh pin of the integrated chip U1 is provided with a zener diode ZD 1.

As shown in fig. 4, the reverse PWM signal and the forward PWM signal are both four paths, the gray scale levels of the four paths of reverse PWM signal and the forward PWM signal are 65536, the four corresponding reverse polarity circuits have the same structure and include NPN triodes Q1, Q2, Q3 and Q4, the C electrode of the NPN triode is connected to the control chip circuit, the B electrode of the NPN triode is connected to the light source driving circuit, and the E electrode of the NPN triode is grounded. The NPN triode is S8050 of long-term electrical technology brand.

During the in-service use, the surface of row needle 3 scribbles the gilt layer that easily adheres to soldering tin for row needle 3 is the easier tin of going up, and row needle 3's non-connecting end cover is established in insulating protective layer, and adjacent row needle 3 is connected when preventing to go up tin technology, combines row needle 3 to form the face of buckling and laminating to be connected in the characteristic on load circuit board 2 surface, uses reflow soldering's technology with decoding circuit board 1 fixed welding on load circuit board 2, practices thrift production time.

The PCB design period can be shortened by adopting the integrated scheme design; the modular design can be applied to lamps with small-size structures, and is most suitable for being applied to LED line lamps; meanwhile, the LED full-color lamp is integrally designed, the light source driving circuit is connected with the LED full-color lamp without line to line, and the production efficiency is improved. The whole module is qualified as a standard product, so that safety stock can be prepared, and the delivery period is shortened. The production and manufacturing cost is reduced.

The utility model discloses LED lamps and lanterns PWM extension passageway module, only need add a control singlechip in front of the control chip circuit, then can realize the effect of many pixel point control, how many pixel points are needed, just add this application module that corresponds the pixel point can, the chip that this application module chooseed for use is ordinary NULL, the cost is far less than singlechip or integrated control chip, reduce cost effectively, decoding circuit board adopts the integrated scheme design moreover, can reduce load circuit board PCB design cycle and the design degree of difficulty, practice thrift circuit design space.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

The LED lamp PWM extension channel module comprises a decoding circuit board (1) and a load circuit board (2), wherein the decoding circuit board (1) is provided with a decoding circuit, and the load circuit board (2) is integrated with an LED color light lamp and a light source driving circuit.
2. The LED lamp PWM extended channel module according to claim 1, wherein the decoding circuit board (1) and the load circuit board (2) are connected through a pin header (3), one end of the pin header (3) is electrically connected with an output end of a reverse polarity circuit, the other end of the pin header (3) forms a bent surface and is attached to the surface of the load circuit board (2), and the bent surface of the pin header (3) is electrically connected with a PWM input end of a light source driving circuit.
3. The LED lamp PWM extended channel module of claim 1, wherein said control chip circuit is provided with an integrated chip U1, a sixth pin of said integrated chip U1 is connected with TTL signal access, and a fifth pin of said integrated chip U1 outputs TTL signal to other decoding circuit board (1).
4. The LED lamp PWM extended channel module of claim 3, wherein a seventh pin of the integrated chip U1 is provided with a zener diode ZD 1.
5. The LED lamp PWM extended channel module as claimed in claim 1, wherein the reverse polarity circuit comprises an NPN triode, a C electrode of the NPN triode is connected with the control chip circuit, a B electrode of the NPN triode is connected with the light source driving circuit, and an E electrode of the NPN triode is grounded.
6. The LED lamp PWM extended channel module of claim 3, wherein the integrated chip U1 model is UCS 8904B.
7. The LED lamp PWM extended channel module of claim 1, wherein the reverse PWM signal and the forward PWM signal are both four-way, and the four-way reverse PWM signal and the forward PWM signal have a grayscale level of 65536.