CN214226418U

CN214226418U - Luminous car logo lamp plate of car based on COB mode

Info

Publication number: CN214226418U
Application number: CN202120521784.8U
Authority: CN
Inventors: 孙化彬; 李伯荣; 陈平安
Original assignee: Yeal Electric Co ltd
Current assignee: Yeal Electric Co ltd
Priority date: 2021-03-12
Filing date: 2021-03-12
Publication date: 2021-09-17
Anticipated expiration: 2031-03-12

Abstract

A car light-emitting car LOGO lamp plate based on a COB mode comprises a PCB, wherein a light-emitting LOGO area corresponding to a car LOGO pattern of a host factory is arranged on the PCB, a plurality of LED chips are densely welded in the light-emitting LOGO area, a light-homogenizing glue layer is uniformly filled in the light-emitting LOGO area, and the LED chips are coated by the light-homogenizing glue layer; the PCB is provided with an anti-reverse diode, an RC filter circuit, a resistor and an input PIN needle in an area except the luminous LOGO area, wherein the resistor is irregularly distributed on the PCB except the luminous LOGO area, and all resistors are connected in parallel to form a voltage division resistor unit; the three LED chips are connected in series to form a light-emitting unit, and the plurality of light-emitting units are connected in parallel to form a light-emitting module; the circuit connection relation of the electrical elements on the PCB is that the reverse connection prevention diode, the light emitting module and the voltage division resistor unit are sequentially connected in series to be connected to two ends of the input PIN needle, and the RC filter circuit is connected in parallel to be connected to two ends of the reverse connection prevention diode.

Description

Luminous car logo lamp plate of car based on COB mode

Technical Field

The utility model belongs to the technical field of luminous car logo, concretely relates to car luminous car logo lamp plate based on COB mode.

Background

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

The automobile is the indispensable vehicle in people's life, people only have the requirement to the drivability of vehicle, security etc. in the past, but along with the improvement of people's standard of living, people have also had higher pursuit to car molding, outward appearance, for example present car lamps and lanterns have not only been a lighting or signal device, still can assemble in each position of automobile body as the decoration, make the car more pleasing to the eye, wherein the outer decoration car logo lamp has the identification effect of ordinary car logo on the one hand, on the other hand can also improve driver's night and drive the experience.

Chinese patent application No. cn201910783966.x discloses an intelligent luminous vehicle logo assembly, the design of the existing luminous logo is provided with a light-transmitting plate and a light-diffusing sheet in order to realize uniform luminescence, and the scheme is often complex in structure, high in cost and low in brightness; moreover, the structure requires a certain distance between the LED crystal grain and the light-diffusing sheet, so that the thickness of the luminous vehicle logo is limited and cannot be made very thin.

Therefore, there is a need in the art for a new solution to the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a car logo lamp plate that gives out light on basis of COB mode, the structure that the current car logo that mentions exists is complicated in solving above-mentioned background art, and the cost is higher, and the radiating effect is poor, and luminance is low and because of the very thin big technical problem who takes that brings that thickness can not be done.

The technical scheme of the utility model is that: a car light-emitting car LOGO lamp plate based on a COB mode comprises a PCB, wherein a light-emitting LOGO area corresponding to a car LOGO pattern of a host factory is arranged on the PCB, a plurality of LED chips are densely welded in the light-emitting LOGO area, a light-homogenizing glue layer is uniformly filled in the light-emitting LOGO area, and the LED chips are coated by the light-homogenizing glue layer;

the PCB is provided with an anti-reverse diode, an RC filter circuit, a resistor and an input PIN needle in an area except the luminous LOGO area, wherein the resistor is irregularly distributed on the PCB except the luminous LOGO area, and all resistors are connected in parallel to form a voltage division resistor unit;

the three LED chips are connected in series to form a light-emitting unit, and the plurality of light-emitting units are connected in parallel to form a light-emitting module;

the circuit connection relation of the electrical elements on the PCB is that the reverse connection prevention diode, the light emitting module and the voltage division resistor unit are sequentially connected in series to be connected to two ends of the input PIN needle, and the RC filter circuit is connected in parallel to be connected to two ends of the reverse connection prevention diode.

Further, the density of the LED chips in the luminous LOGO area is 5-20/square centimeter.

Further, the size of the LED chip is 0.15mm by 0.5 mm.

Further, the PCB is an FR4 double-sided board or an aluminum board.

Adopt above-mentioned technical scheme the utility model discloses following beneficial effect can be brought:

the utility model discloses a set up the LED chip of suitable density in luminous LOGO district on the PCB board, and this LED chip welds with PCB board 1 and is in the same place, still is provided with the even light glue film with LED chip cladding in the luminous LOGO district, make the LED chip reach the effect of area source when luminous, and adopt this kind of structure and need not additionally set up the astigmatism piece, greatly reduced the thickness of the whole car LOGO of giving out light, save space; the utility model has the advantages of simple structure, low manufacturing cost, high brightness, good heat dissipation effect and the like.

Drawings

Fig. 1 is a schematic structural view of the utility model;

FIG. 2 is a schematic view of the exploded structure of the present invention;

fig. 3 is a schematic diagram of the circuit structure of the present invention.

In the figure, 1-PCB board, 2-LED chip, 3-uniform photoresist layer, 4-reverse connection prevention diode, 5-RC filter circuit, 6-resistor and 7-input PIN needle.

Detailed Description

As shown in fig. 1 and 2, an automobile luminous emblem lamp plate based on COB mode, its characterized in that: the automobile luminous car LOGO lamp plate comprises a PCB (printed circuit board) 1 which can be one of an FR4 double-sided board or an aluminum substrate, wherein a luminous LOGO area corresponding to a car LOGO pattern of a host factory is arranged on the PCB 1, a plurality of LED chips 2 are densely welded in the luminous LOGO area, the size of each LED chip 2 is 0.15mm x 0.5mm, and the LED chips can be randomly densely arranged according to different luminous shapes; in the embodiment, the density of the LED chips 2 in the light emitting LOGO region is 5-20 particles/square centimeter; the light-emitting LOGO area is uniformly filled with a light-homogenizing glue layer 3, the LED chips 2 are coated by the light-homogenizing glue layer 3, and the light-homogenizing glue layer 3 can protect the LED chips 2 and enable the light-emitting effects of the LED chips 2 to form a whole to achieve the effect of a surface light source; in addition, even adhesive layer 3 can evenly mix phosphor powder, and the colour of phosphor powder can be selected according to actual demand, and the phosphor powder of different colours should have clear and definite boundary differentiation in even adhesive layer 3 to show better take the colour luminous effect in giving out light LOGO district.

An anti-reverse diode 4 playing a role of protection, an RC filter circuit 5 playing a role of smoothing voltage, a resistor 6 and an input PIN PIN 7 are arranged in an area of the PCB 1 except for the luminous LOGO area, wherein the resistor 6 is irregularly distributed on the PCB 1 except for the luminous LOGO area, and all the resistors 6 are connected in parallel to form a voltage division resistor unit; the heat of the whole lamp panel mainly comes from the heating of the resistor and the heating of the LED chip, the LED chip is welded on the PCB 1, the heat can be further transmitted to the PCB 1 and dissipated, the resistor 6 is irregularly distributed on the PCB 1 except for the luminous LOGO area, and the heat generated by the resistor 6 is further transmitted to the PCB 1 and dissipated in order to improve the heat dissipation effect; two PINs of the input PIN 7 are flat PINs with the distance of 4.0mm, and the PINs are matched with a connector plug special for an automobile so as to facilitate power supply input;

the three LED chips 2 are connected in series to form a light-emitting unit, and the plurality of light-emitting units are connected in parallel to form a light-emitting module, so that the arrangement is mainly that the voltage fluctuation range of the automobile is generally DC9V-16V, the voltage drop of most LEDs is generally about 3V, three LED chips are connected in series to be about 9V, and the LED chips can be ensured to be lightened even if the level voltage of the automobile is the lowest 9V. If the voltage is lower than three strings, redundant voltage is inevitably divided by the resistor, so that the loss generated by the resistor is large, and the heat generation amount is high; if higher than three strings, then the LED will not light up at 9V;

as shown in fig. 3, for the circuit connection structure diagram of the present invention, the circuit connection structure diagram of the electrical element on the PCB board 1 is that the reverse connection preventing diode 4, the light emitting module, and the voltage dividing resistor unit are sequentially connected in series to the two ends of the input PIN 7, and the RC filter circuit 5 is connected in parallel to the two ends of the reverse connection preventing diode 4;

the utility model provides a pair of car light-emitting car LOGO lamp plate based on COB mode can arrange a shell and use, is provided with printing opacity district and non-printing opacity district on this shell, the pattern in printing opacity district is the same with the luminous LOGO district on the PCB board 1, and this pattern adopts PVD vacuum sputtering to plate metal chromium layer, and non-printing opacity district sets up printing ink printing, and the shell that adopts this kind of technique has been ripe prior art, consequently is the utility model discloses in do not require the protection, more concrete setting up to: the PCB board 1 is provided with a mounting hole, the mounting hole is mounted inside the car logo shell through a screw, the car logo is of a sealing waterproof structure, a connector socket is reserved on the shell, two pin rows on the PCB board are leaked, and the power supply connector is directly inserted into the shell to supply power. When the vehicle starts, the automobile terminal is electrified, and the automobile logo is lightened immediately. Beautiful and gorgeous appearance and improves the vehicle identification degree.

The above description is only the preferred embodiment of the present invention, and not the limitation of the present invention, and any person skilled in the art can not depart from the present invention, and the equivalent replacement and modification made by the present invention are all regarded as falling into the protection scope of the present invention, and thus the present invention is claimed.

Claims

1. The utility model provides a luminous car logo lamp plate of car based on COB mode which characterized in that: the automobile luminous car LOGO lamp plate comprises a PCB (1), a luminous LOGO area corresponding to a car LOGO pattern of a host factory is arranged on the PCB (1), a plurality of LED chips (2) are densely welded in the luminous LOGO area, a light homogenizing adhesive layer (3) is uniformly filled in the luminous LOGO area, and the LED chips (2) are coated by the light homogenizing adhesive layer (3);

an anti-reverse diode (4), an RC filter circuit (5), a resistor (6) and an input PIN (PIN) PIN (7) are arranged on the PCB (1) except for the luminous LOGO area, wherein the resistor (6) is irregularly distributed on the PCB (1) except for the luminous LOGO area, and all the resistors (6) are connected in parallel to form a voltage dividing resistor unit;

the three LED chips (2) are connected in series to form a light-emitting unit, and the plurality of light-emitting units are connected in parallel to form a light-emitting module;

the circuit connection relationship of the electrical elements on the PCB (1) is that the reverse connection prevention diode (4), the light-emitting module and the voltage division resistor unit are sequentially connected in series to be connected to two ends of the input PIN (7), and the RC filter circuit (5) is connected in parallel to be connected to two ends of the reverse connection prevention diode (4).

2. The COB-mode-based automobile luminescent emblem plate of claim 1, characterized in that: the density of the LED chips (2) in the luminous LOGO area is 5-20/square centimeter.

3. The COB-mode-based automobile luminescent emblem plate of claim 1, characterized in that: the LED chip (2) has a size of 0.15mm by 0.5 mm.

4. The COB-mode-based automobile luminescent emblem plate of claim 1, characterized in that: the PCB board (1) is an FR4 double-sided board or an aluminum substrate.