CN216383999U

CN216383999U - High temperature resistant day portable lighter with breathe function

Info

Publication number: CN216383999U
Application number: CN202122327005.3U
Authority: CN
Inventors: 李沁
Original assignee: Suzhou Yaoxin Electronics Co ltd
Current assignee: Suzhou Yaoxin Electronics Co ltd
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2022-04-26
Anticipated expiration: 2031-09-24

Abstract

The utility model discloses a high-temperature-resistant daytime running light with a breathing function, which comprises a light-emitting unit and a driving board connected with the light-emitting unit, wherein the light-emitting unit comprises an FPC (flexible printed circuit) substrate and LED (light-emitting diode) lamp beads, the LED lamp beads are adhered to the front surface of the FPC substrate, a heat dissipation plate arranged corresponding to the LED lamp beads is also arranged on the back surface of the FPC substrate, the FPC substrate is connected with the driving board through wiring harnesses, the driving board comprises a PCB (printed circuit board) substrate, and a control chip and a constant current driving unit which are welded on the PCB substrate, the constant current driving unit comprises a first terminal connected with an external power supply and a second terminal inserted with the wiring harnesses, a constant current driving chip is also connected between the first terminal and the second terminal, a feedback pin and a conversion pin of the constant current driving chip are respectively connected with the positive electrode and the negative electrode of the second terminal, a feedback pin of the constant current driving chip is connected with the output end of the control chip, and the input end of the control chip is connected with a signal wire of the first terminal. The radiating effect is good, has reduced control circuit's volume.

Description

High temperature resistant day portable lighter with breathe function

Technical Field

The utility model relates to the technical field of automobile parts, in particular to a high-temperature-resistant daytime running lamp with a breathing function.

Background

The daytime running light of the automobile becomes an important signal light component of the automobile front combined light, the early daytime running light is mainly provided with halogen bulbs, and with the development of science and technology, the designed daytime running light mostly adopts a high-brightness LED as a light source, so that the electric power can be greatly reduced by 35%, the service life of a storage battery can be prolonged, and the longest service life can be 8000 hours, which is almost equal to the service life of the automobile. Automotive daytime running lights can improve visibility while making motor vehicles more conspicuous, a technique specifically studied for daytime use being more direct and effective than existing lighting devices. The daytime running light of current car is direct when only starting and lights, and the function is more single, and is not novel enough, embodies the intellectuality that appears not taking the place of science and technology, can not stand out the individualized demand of car, and the radiating effect is poor, can not satisfy its long-life user demand.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects, the utility model aims to provide the high-temperature-resistant daytime running lamp with the breathing function, the heat dissipation effect is good, the breathing function is added, the safety of an automobile is enhanced, the electronic control function of each part of the whole automobile is coordinated, and the volume of a control circuit is reduced.

In order to achieve the above purposes, the utility model adopts the technical scheme that: the utility model provides a high temperature resistant day portable lighter with respiratory function, includes luminescence unit and the drive plate of being connected with luminescence unit, its characterized in that: the light-emitting unit comprises a FPC substrate and LED lamp beads, the LED lamp beads are adhered to the front face of the FPC substrate, a heat dissipation plate which is arranged corresponding to the LED lamp beads is further arranged on the back face of the FPC substrate, the FPC substrate is connected with a drive board through a wiring harness, the drive board comprises a PCB substrate, a control chip and a constant current driving unit, the control chip and the constant current driving unit are welded on the PCB substrate, the constant current driving unit comprises a first terminal and a second terminal, the first terminal is connected with an external power source, the second terminal is connected with the wiring harness in an inserting mode, a constant current driving chip is further connected between the first terminal and the second terminal, a feedback pin and a conversion pin of the constant current driving chip are respectively connected with the positive electrode and the negative electrode of the second terminal, the feedback pin of the constant current driving chip is connected with the output end of the control chip, and the input end of the control chip is connected with a signal line of the first terminal.

The utility model has the beneficial effects that: on the one hand, the LED lamp beads are attached to the FPC substrate, and meanwhile, an independent heat dissipation plate is additionally arranged on the back of the attaching position of each LED lamp bead, so that the heat dissipation area is increased, the light attenuation of the LED lamp beads is reduced, the service life of the LED lamp beads is prolonged, and the LED lamp beads are used as light source lamp panels. On the other hand, the constant current driving unit and the control chip are integrated on one PCB and connected with the light emitting unit through a wire harness, the first terminal and the second terminal are convenient to plug, the structure is compact, and the size of the control circuit is reduced.

Further speaking, the heating panel is aluminum plate, and the radiating effect is good, bonds at the back of FPC base plate through glue, is convenient for fast assembly.

Further, an input protection circuit is further arranged between the first terminal and the voltage input end of the constant current driving chip, the input protection circuit comprises a transient diode TVS1, a capacitor C10, a capacitor C12 and a capacitor C11 which are connected in parallel, one end of the transient diode TVS1, one end of the capacitor C10, one end of the capacitor C12 and one end of the capacitor C11 which are connected in parallel are connected with the first terminal, and the other end of the transient diode TVS1, the capacitor C10, the capacitor C12 and the capacitor C11 which are connected in parallel are grounded.

Further, a switch circuit is connected between the control chip and the negative electrode of the second terminal, the control chip is used for controlling the on-off of the switch circuit, and the switch circuit is used for controlling the connection or disconnection of the negative electrode of the second terminal. When the automobile is started, the control chip receives PWM square wave signals of a breathing mode required by a user through the first terminal, the control chip can change the on-off state of the switch circuit by changing the duty ratio of the PWM square wave, so that the on-off state of the negative electrode of the second terminal connected with the negative electrode of the light-emitting unit is changed, the on-off state of the light-emitting unit is realized, the dynamic effect of the whole automobile is increased, and the safety is improved.

Further, the switch circuit comprises an N-type field effect transistor Q1, a gate of the N-type field effect transistor Q1 is connected with an output end of the control chip, a source of the N-type field effect transistor is grounded, and a drain of the N-type field effect transistor is connected with a negative electrode of the second terminal through a current limiting resistor. And when the voltage VGS between the grid electrode and the source electrode of the N-type field effect transistor is greater than the threshold voltage, the drain electrode and the source electrode of the N-type field effect transistor are conducted, the switch of the N-type field effect transistor is opened, and the negative electrode of the second terminal is communicated. And when the voltage VGS between the grid electrode and the source electrode of the N-type field effect transistor is smaller than the threshold voltage, the drain electrode and the source electrode of the N-type field effect transistor are in a high-resistance state, the switch of the N-type field effect transistor is closed, and the negative electrode of the second terminal is disconnected.

Further, the current limiting resistor comprises a resistor RS3 and a resistor RS1 which are connected in parallel.

Further, the LED lamp beads are divided into two groups, and the LED lamp beads in the same group are connected in series and connected with the other group in parallel.

Further, the light-emitting unit further comprises a third terminal for inserting the wiring harness, and the third terminal is fixed on the FPC substrate.

Further, a fourth terminal connected with the output end of the control chip is further arranged on the PCB substrate, so that connection is facilitated.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is an electrical schematic diagram of a constant current driving unit in an embodiment of the present invention;

FIG. 3 is an electrical schematic diagram of a control chip in an embodiment of the utility model;

FIG. 4 is an electrical schematic diagram of a light emitting unit in an embodiment of the present invention;

fig. 5 is an electrical schematic diagram of a fourth terminal in an embodiment of the utility model.

In the figure:

100. a drive plate; 1. an FPC substrate; 2. LED lamp beads; 3. a heat dissipation plate; 4. a wire harness; 5. a control chip; 61. a first terminal; 62. a second terminal; 63. a constant current driving chip; 64. an input protection circuit; 65. a switching circuit; 7. a third terminal; 8. and a fourth terminal.

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the utility model easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the utility model.

Examples

Referring to the attached drawing 1, the high-temperature resistant daytime running light with the breathing function comprises a light-emitting unit and a driving board 100 connected with the light-emitting unit, wherein the light-emitting unit comprises an FPC (flexible printed circuit) substrate 1 and LED lamp beads 2, the LED lamp beads 2 are adhered to the front surface of the FPC substrate 1, and the back surface of the FPC substrate 1 is also provided with a heat dissipation plate 3 corresponding to the LED lamp beads 2. The FPC substrate 1 is connected to the driving board 100 through a wire harness 4. The heating panel 3 is aluminum plate, and the radiating effect is good, bonds at the back of FPC base plate 1 through glue, the fast assembly of being convenient for. On the one hand, the LED lamp beads 2 are attached to the FPC substrate 1, and meanwhile, the back of the attaching position of each LED lamp bead 2 is provided with an independent heat dissipation plate 3, so that the heat dissipation area is increased, the light attenuation of the LED lamp beads 2 is reduced, the service life of the LED lamp beads 2 is prolonged, and the LED lamp beads are used as light source lamp panels.

The LED lamp beads 2 are divided into two groups, the LED lamp beads 2 in the same group are connected in series and are connected with the other group of LED lamp beads 2 in parallel. The light emitting unit further includes a third terminal 7 to which the wire harness 4 is inserted, and the third terminal 7 is fixed on the FPC substrate 1.

Referring to fig. 2 to 5, the driving board 100 includes a PCB substrate, and a control chip 5 and a constant current driving unit soldered on the PCB substrate, the PCB substrate is further provided with a fourth terminal 8 connected to an output terminal of the control chip 5 for connection, and the constant current driving unit includes a first terminal 61 connected to an external power source and a second terminal 62 inserted into the wire harness 4. A constant current driving chip 63 is further connected between the first terminal 61 and the second terminal 62, and the model number of the constant current driving chip 63 is TP 3602. The first terminal 61 is connected with four signal lines, which are respectively a position lamp, a daytime running lamp, a signal input end and a grounding end of a turn lamp, the signal input ends of the daytime running lamp and the position lamp are connected in parallel and connected to the constant current driving chip 63, and the signal input ends of the turn lamp and the position lamp are also directly connected to the corresponding output end of the control chip 5. A feedback pin FB and a conversion pin SW of the constant current driving chip 63 are respectively connected with the positive electrode and the negative electrode of the second terminal 62, the feedback pin FB of the constant current driving chip 63 is connected with the output end of the control chip 5, and the input end of the control chip 5 is connected with the signal line of the first terminal 61. The control chip 5 is a singlechip of STC89C52 model. The constant current driving unit and the control chip 5 are integrated on a PCB and connected with the light emitting unit through the wiring harness 4, the first terminal 61 and the second terminal 62 are convenient to plug, the structure is compact, and the size of the control circuit is reduced.

An input protection circuit 64 is further arranged between the first terminal 61 and the voltage input end of the constant current driving chip 63, the input protection circuit 64 comprises a transient diode TVS1, a capacitor C10, a capacitor C12 and a capacitor C11 which are connected in parallel, one end of the transient diode TVS1, one end of the capacitor C10, one end of the capacitor C12 and one end of the capacitor C11 which are connected in parallel are connected with the first terminal 61, and the other end of the transient diode TVS1, the capacitor C10, the capacitor C12 and the capacitor C11 are connected with the ground.

A switch circuit 65 is further connected between the control chip 5 and the negative electrode of the second terminal 62, the control chip 5 is used for controlling the on-off of the switch circuit 65, and the switch circuit 65 is used for controlling the connection or disconnection of the negative electrode of the second terminal 62. When the automobile is started, the control chip 5 receives a PWM square wave signal of a breathing mode required by a user through the first terminal 61, the control chip 5 changes the on-off state of the switch circuit 65 by changing the duty ratio of the PWM square wave, and then the negative electrode of the second terminal 62 connected with the negative electrode of the light-emitting unit is switched on and off, so that the on-off state of the light-emitting unit is realized, the dynamic effect of the whole automobile is increased, and the safety is improved. When the control chip 5 receives the signal line signal of the position light, the control chip 5 reduces the current output by the constant current driving chip 63 to the current required when the position light is turned on by controlling the duty ratio of the PWM signal, and converts the light emitting unit serving as the daytime running light into the position light. When the automobile needs to turn, the control chip 5 receives an external turning signal, the light-emitting unit is turned off firstly, meanwhile, the control chip 5 detects the turning signal all the time, and after no signal output of the steering lamp is detected, the light-emitting unit is turned on again after 1S delay.

The switch circuit 65 comprises an N-type field effect transistor Q1, the gate of the N-type field effect transistor Q1 is connected with the output end of the control chip 5, the source of the N-type field effect transistor is grounded, and the drain of the N-type field effect transistor is connected with the cathode of the second terminal 62 through a current limiting resistor. When the voltage VGS between the gate and the source of the N-type fet is greater than the threshold voltage, the drain and the source of the N-type fet are turned on, the switch of the N-type fet is turned on, and the cathode of the second terminal 62 is connected. When the voltage VGS between the gate and the source of the N-type fet is less than the threshold voltage, the drain and the source of the N-type fet are in a high-impedance state, the switch of the N-type fet is turned off, and the negative terminal of the second terminal 62 is turned off. The current limiting resistor comprises a resistor RS3 and a resistor RS1 which are connected in parallel.

The above embodiments are merely illustrative of the technical concept and features of the present invention, and the present invention is not limited thereto, and any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a high temperature resistant day portable lighter with respiratory function, includes luminescence unit and the drive plate of being connected with luminescence unit, its characterized in that: the light-emitting unit comprises a FPC substrate and LED lamp beads, the LED lamp beads are adhered to the front face of the FPC substrate, a heat dissipation plate which is arranged corresponding to the LED lamp beads is further arranged on the back face of the FPC substrate, the FPC substrate is connected with a drive board through a wiring harness, the drive board comprises a PCB substrate, a control chip and a constant current driving unit, the control chip and the constant current driving unit are welded on the PCB substrate, the constant current driving unit comprises a first terminal and a second terminal, the first terminal is connected with an external power source, the second terminal is connected with the wiring harness in an inserting mode, a constant current driving chip is further connected between the first terminal and the second terminal, a feedback pin and a conversion pin of the constant current driving chip are respectively connected with the positive electrode and the negative electrode of the second terminal, the feedback pin of the constant current driving chip is connected with the output end of the control chip, and the input end of the control chip is connected with a signal line of the first terminal.

2. The high temperature resistant daytime running light with a breathing function according to claim 1, characterized in that: the heating panel is aluminum plate, bonds at the back of FPC base plate through glue.

3. The high temperature resistant daytime running light with a breathing function according to claim 1, characterized in that: an input protection circuit is further arranged between the first terminal and the voltage input end of the constant current driving chip, the input protection circuit comprises a transient diode TVS1, a capacitor C10, a capacitor C12 and a capacitor C11 which are connected in parallel, one end of the transient diode TVS1, one end of the capacitor C10, one end of the capacitor C12 and one end of the capacitor C11 which are connected in parallel are connected with the first terminal, and the other end of the transient diode TVS1, the capacitor C10, the capacitor C12 and the capacitor C11 are connected with the first terminal in parallel.

4. The high temperature resistant daytime running light with a breathing function according to claim 1, characterized in that: and a switch circuit is also connected between the control chip and the negative electrode of the second terminal, the control chip is used for controlling the on-off of the switch circuit, and the switch circuit is used for controlling the connection or disconnection of the negative electrode of the second terminal.

5. The high temperature resistant daytime running light with a respiratory function according to claim 4, characterized in that: the switch circuit comprises an N-type field effect transistor Q1, the grid electrode of the N-type field effect transistor Q1 is connected with the output end of the control chip, the source electrode of the N-type field effect transistor is grounded, and the drain electrode of the N-type field effect transistor is connected with the negative electrode of the second terminal through a current-limiting resistor.

6. The high temperature resistant daytime running light with a respiratory function according to claim 5, characterized in that: the current limiting resistor comprises a resistor RS3 and a resistor RS1 which are connected in parallel.

7. The high temperature resistant daytime running light with a breathing function according to claim 1, characterized in that: the LED lamp beads are divided into two groups, the LED lamp beads in the same group are connected in series and are connected with the other group in parallel.

8. The high temperature resistant daytime running light with a breathing function according to claim 1, characterized in that: the light-emitting unit further comprises a third terminal for the wiring harness to be inserted, and the third terminal is fixed on the FPC substrate.

9. The high temperature resistant daytime running light with a breathing function according to claim 1, characterized in that: and the PCB substrate is also provided with a fourth terminal connected with the output end of the control chip.