CN211209973U

CN211209973U - Automobile L ED illuminant without positive and negative electrodes

Info

Publication number: CN211209973U
Application number: CN201921781954.5U
Authority: CN
Inventors: 信长健; 罗静; 牛萍娟; 牛翔华
Original assignee: Tianjin Gongda Hiyu Lighting Parts Co ltd
Current assignee: Tianjin Yishen Technology Co ltd
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2020-08-07
Anticipated expiration: 2029-10-18

Abstract

The utility model belongs to the technical field of L ED car lamp, a no positive negative pole's car L ED luminous body, including L ED module, control module, this luminous body wiring end does not divide positive negative pole, positive negative pole inserts all can normally work wantonly during the wiring, on circuit design, adopt 2 0805 chip resistor to connect in parallel and make current-limiting resistance control L ED electric current, L ED3 establish ties, the input is used 4 diodes to make the rectifier bridge, the input positive negative pole inserts all can normally work wantonly, on PCB structural design, the circuit board adopts paster device single face cloth board, diodes, current-limiting resistance and L ED all arrange at the PCB openly, the long limit of current-limiting resistance is placed with circuit board minor face parallel.

Description

Automobile L ED illuminant without positive and negative electrodes

Technical Field

The utility model belongs to the technical field of L ED car lamp, particularly, relate to an automobile L ED luminous body of anodeless negative pole.

Background

With the continuous development and maturity of L ED manufacturing technology and the gradual reduction of production cost, L ED light source has begun to be widely applied to the fields of automobile lamps, special lighting lamps, public lighting and the like, has great development potential, and is considered as the most promising light source in the 21 st century.

L ED has strong reliability, long service life, high color purity, high response speed, small volume, easy design, excellent change of automobile appearance and the like, so that the lamp is more and more generally applied to the aspect of external illumination of the automobile.

At present L ED automobile lamp wiring end on the market is mostly positive negative pole branch, will connect according to positive negative pole during the wiring the utility model relates to a no positive negative pole's car L ED luminous body wiring end does not divide positive negative pole, and positive negative pole inserts all can normally work wantonly during the wiring.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the applied condition of the automobile L ED luminous body of no positive negative pole, designed a wiring end and do not divide positive negative pole, the automobile L ED luminous body of no positive negative pole that all can normally work is inserted wantonly to positive negative pole during the wiring.

The technical scheme adopted by the utility model is that an automobile L ED luminous body without positive and negative poles comprises a L ED module and a control module, and is characterized in that the automobile L ED luminous body without positive and negative poles adopts a resistance current-limiting mode to control L ED current, 4 diodes are used as a rectifier bridge at the input end, the long edges of the 4 diodes are arranged in parallel with the long edges of a circuit board, 2 0805 chip resistors are connected in parallel to control L ED current as current-limiting resistors, 3L ED resistors are connected in series, 4 diodes are used as rectifier bridges at the input end, the input positive and negative poles can work normally when being connected at will, and the long edges of the 2 0805 chip resistors are arranged in parallel with the short edges of the circuit board.

The utility model has the advantages that: 2 0805 chip resistors are connected in parallel to serve as current limiting resistors to reduce the size of a single chip resistor, so that the chip resistor is not easy to break in the assembling process. 4 diodes are used as a rectifier bridge at the input end, so that the arrangement requirement of the devices is met, and the requirement that the input anode and the input cathode can work normally when being connected at will is met. The long edges of the 2 0805 chip resistors are arranged in parallel with the short edges of the circuit board, so that the stress area of the chip resistors is the minimum when the circuit board deforms in the assembling process, and devices are not prone to falling.

Drawings

Fig. 1 is a schematic circuit diagram of an L ED illuminant of an automobile without positive and negative electrodes according to the present invention;

fig. 2 is a design diagram of the present invention of a non-positive and negative electrode L ED illuminant PCB.

Detailed Description

The following describes a specific embodiment of the present invention in terms of circuit principles and PCB design with reference to the accompanying drawings.

The utility model discloses a schematic diagram is shown in fig. 1, resistors R1, R2 are connected in parallel and are used as current-limiting resistor control L ED current, be used for setting the electric current that flows through L ED L ED 1-L ED3 is L ED part, 3 total L ED, &lTtTtranslation = L "&gTtL &lTt/T &gTtED3 are connected in series, diodes D1, D2, D3, D4 are used for the rectification of circuit and are used as the positive and negative poles after the output of rectifier bridge constant rectifier bridge, make the input positive and negative poles can normally work by random access, when the input positive pole inserts Vcc1, when the negative pole inserts Vcc1, because the diode has unidirectional conductivity, only diodes D1, D1 and 1ED and resistance constitute the return circuit, 3 1ED lights, when the input positive pole inserts Vcc1, because the diode has unidirectional conductivity, D1 and 1ED and resistance constitute the return circuit, 3 1, the normal input positive and negative pole 1ED return circuit can satisfy the requirement of random access.

The utility model discloses a PCB design is as shown in FIG. 2: the circuit board adopts paster device single face cloth board, the diode, current-limiting resistor and L ED are all arranged at the PCB openly current-limiting resistor is parallelly connected for 2 0805 paster resistances, it makes the paster resistance difficult fracture in the assembling process to reduce single paster resistance size 4 diodes are used as the rectifier bridge to the input, the long limit of 4 diodes is placed with the long limit parallel of circuit board, its coordinate position symmetry, satisfy the device demand of arranging 2 0805 paster resistances long limit and circuit board minor face parallel placement, guarantee that paster resistance lifting surface area is minimum when the circuit board warp in the assembling process, be difficult for falling the device.

Claims

1. A vehicle L ED light without positive and negative electrodes comprises a L ED module and a control module, and is characterized in that the vehicle L ED light without positive and negative electrodes controls L ED current in a resistance current limiting mode, 4 diodes are used as rectifier bridges at input ends, and long sides of current limiting resistors are arranged in parallel with short sides of a circuit board.

2. The anode-cathode-free L ED lighting device of claim 1, wherein 2 0805 chip resistors are connected in parallel to control L ED current, L ED3 are connected in series.

3. The L ED light emitter of claim 1, wherein the input anode and cathode can be switched on at will to work normally.

4. The L ED light emitter of claim 1, wherein 2 0805 chip resistors are disposed with long sides parallel to short sides of the circuit board.