CN209762934U - vehicle lighting device - Google Patents

Abstract

The utility model relates to a vehicle lighting technology field discloses a vehicle lighting device, vehicle lighting device includes flexible circuit board, light source array, silica gel encapsulation shell and integrated control module, wherein, the light source array integration is in on a terminal surface of flexible circuit board, the silica gel encapsulation shell with the terminal surface of flexible circuit board is connected, is used for the encapsulation the light source array, integrated control module with the flexible circuit board electricity is connected, is used for according to setting for the chronogenesis right the light source array carries out the control of putting on or off. Because the base plate of the vehicle lighting device is the flexible circuit board, the flexible circuit board is soft and bendable, so that the appearance of the lighting device is changeable, the lighting device can adapt to the shape change of a vehicle lamp, the lighting effect of the light source array is uniform, meanwhile, the integrated control module is used for controlling the light source array to jump in the on-off state according to the time sequence, the running-water dynamic on-off can be realized, and the visual effect of the vehicle lamp is enriched.

Description

vehicle lighting device

Technical Field

The utility model relates to a vehicle lighting field, concretely relates to vehicle lighting device.

background

the vehicle lamp is used as an important exterior device of a vehicle, and requires both fashionable appearance modeling and good lighting effect, and the requirements on the vehicle lamp modeling and the lighting effect are higher and higher in the design process of the vehicle lamp. Patent application CN108571701A discloses a car light guide module, it includes at least one light pipe, the light face department of advancing of light pipe is equipped with the light source, if the lateral wall of light pipe is smooth, the light that the light source sent will follow one end face of light pipe and jet out from another end face after taking place the total reflection in the light pipe and penetrating into, in order to let the lateral wall of light pipe become the light emitting area, generally need design dentation on the lateral wall of light pipe, because the critical angle of total reflection of light is unsatisfied to the reflection angle of light on dentation, the lateral wall outgoing of light pipe can be followed to light, form the luminous illuminating effect of lateral wall of light pipe. Although the car light guide device can obtain the narrow light band with the appearance in a linear shape, the light-emitting state of the light guide pipe can be simultaneously turned on or off along with the turning on or off of the end face light source, the visual effect is single, and the time sequence turning-on or turning-off control effect in other dynamic forms cannot be realized. Moreover, since the light-emitting surface of the light guide pipe is provided with the dentate pattern, when the light-emitting surface of the light guide pipe emits light, the lighting effect of the light-emitting surface is not uniform because the refraction angle of the dentate pattern to the light is different.

Therefore, the existing vehicle lighting device cannot realize the on-off control effect of time sequence lighting or other dynamic forms, has the defect of uneven light emitting effect of a light emitting area, and cannot meet the diversified and personalized requirements of the vehicle lamp in the aspects of modeling and lighting effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the control effect that current vehicle lighting device can't realize that the chronogenesis lights or other dynamic forms bright go out to and the inhomogeneous problem of luminous effect of luminous zone.

In order to achieve the above object, the present invention provides a vehicle lighting device, which comprises a flexible circuit board, a light source array, a silica gel packaging shell and an integrated control module;

The light source array is integrated on one end face of the flexible circuit board;

the silica gel packaging shell is connected with the end face of the flexible circuit board and used for packaging the light source array;

The integrated control module is electrically connected with the flexible circuit board and used for controlling the light source array to be on or off according to a set time sequence.

Preferably, a plurality of point light sources are arranged in at least one row at certain intervals along the extending direction of the flexible circuit board to form the light source array;

The light source array comprises independent point light sources and a point light source group formed by connecting a plurality of point light sources in series;

The integrated control module is used for outputting a first control signal for driving the point light source group to be on and off according to a time sequence and a second control signal for driving the point light source group to be on and off according to the time sequence.

Preferably, when the point light sources are arranged in a line along the extending direction of the flexible circuit board, the cross section of the silica gel packaging shell is rectangular or peak-shaped;

when the point light sources are arranged in two or more rows along the extending direction of the flexible circuit board, the cross section of the silica gel packaging shell is rectangular or continuous peak shape.

Preferably, the maximum distance between the light emitting centers of every two adjacent point light sources is 10-15 mm.

Preferably, the point light source is a Light Emitting Diode (LED) or a light emitting chip;

The point light source is a monochromatic light source or a multicolor light source and is used for realizing various light distribution functions.

Preferably, the silica gel packaging shell is uniformly dispersed with the light scattering agent.

preferably, the open end of the silica gel packaging shell is fixed on the end face of the flexible circuit board and forms a cavity with the end face of the flexible circuit board in an enclosing manner;

A light source protection cover is arranged in the cavity.

Preferably, the flexible circuit board integrated with the light source array is integrally packaged by silica gel, so that no gap exists between the silica gel packaging shell and the light source array.

Preferably, the vehicle lighting device further comprises a light guide installed at a light emitting side of the light source array;

the light guide area of the light guide piece comprises a light incident surface and a light emergent surface, and the light incident surface of the light guide area can be provided with dermatoglyphs or coated with a light scattering layer.

Preferably, the vehicle lighting device further comprises a heat dissipation bracket disposed on the other end surface of the flexible circuit board facing away from the light source array.

Through the technical scheme, the substrate of the vehicle lighting device is the flexible circuit board which is soft and bendable, so that the lighting device is changeable in appearance and can adapt to the shape change of the vehicle lamp, the lighting effect of the light source array is uniform, meanwhile, the integrated control module is used for controlling the light source array to jump in the on-off state according to the time sequence, the light source array can realize flowing dynamic on-off, and the visual effect of the vehicle lamp is enriched.

Drawings

FIG. 1 is a schematic view of a vehicle lighting device;

Fig. 2 is a cross-sectional view of the vehicular illumination device according to embodiment 1;

FIG. 3 is a cross-sectional view of a vehicular illumination apparatus in a preferred embodiment of example 1;

Fig. 4 is a cross-sectional view of the vehicular illumination device according to embodiment 2;

FIG. 5 is a cross-sectional view of a vehicular illumination apparatus in a preferred embodiment of example 2;

fig. 6 is a cross-sectional view of the vehicle lighting device according to embodiment 3;

Fig. 7 is a cross-sectional view of the vehicular illumination device according to embodiment 4;

Description of the reference numerals

1-a flexible circuit board; 2-an array of light sources; 3-silica gel packaging shell; 4-a light guide; 5-LED light source; 6-light source protective cover.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

the utility model provides a vehicle lighting device, as shown in figure 1, vehicle lighting device includes flexible circuit board 1, light source array 2, silica gel packaging shell 3 and integrated control module.

Wherein, the light source array 2 is integrated on one end face of the flexible circuit board 1. The end face of the flexible circuit board 1, on which the light source array 2 is mounted, is covered with a silica gel packaging shell 3, and the silica gel packaging shell 3 is connected with the end face of the flexible circuit board 1 and used for packaging the light source array 2. The integrated control module is electrically connected with the flexible circuit board 1 and is used for controlling the light source array 2 to be on or off according to a set time sequence.

Compared with a hard resin circuit board or a metal circuit board, the flexible circuit board 1 has high mounting flexibility because of light weight, small thickness, good flexibility, and capability of changing the shape appropriately. The embodiment of the utility model provides an in the time of light source array 2 integration on flexible circuit board 1, have advantages such as wiring density is high, the space restriction is less. Moreover, the flexible circuit board 1 and the silica gel packaging shell 3 are flexible, so that the vehicle lighting device can be flexibly bent according to the requirement of vehicle lamp modeling, and is convenient to mount and high in adaptability.

When the outer shape of the flexible circuit board 1 extends in a band-like trend, according to a preferred embodiment of the present invention, a plurality of point light sources are arranged in at least one row at intervals along the extending direction of the flexible circuit board 1 to constitute the light source array 2. In practical application, point light sources are integrated on the flexible circuit board 1 in an array shape, and the whole structure is called a light band after being packaged by the silica gel packaging shell 3.

In the present embodiment, the light source array 2 includes independent point light sources and a point light source group in which a plurality of point light sources are connected in series. The integrated control module is used for controlling the light source array 2 to be on or off according to a set time sequence, and the control signals output by the integrated control module comprise a first control signal for driving the point light source group to be on or off according to the time sequence and a second control signal for driving the point light source group to be on or off according to the time sequence. The whole light source array 2 is composed of a plurality of point light sources and a plurality of point light source groups, each point light source and each point light source group can independently carry out on-off conversion, and the time sequence and dynamic lighting effect can be realized through the control of the integrated control module.

Under the control of the integrated control module, the ways of turning on and off the light source array 2 in time sequence include, but are not limited to: any one or more independent point light sources are turned on or off in time sequence, or any one or more groups of point light source groups connected in series are turned on or off in time sequence, and the point light sources are sequentially turned on or off from one end to the other end of the light source array 2 to form a flowing water effect. The flexible circuit board 1 is narrow and long in light band shape obtained after being packaged by the silica gel packaging shell 3, so that a flexible assembly line type car lamp model can be manufactured, and when the integrated control module drives the light source array 2 to be sequentially turned on and off from one end to the other end according to time sequence, the lighting effect of dynamic assembly line is formed.

In practical application, the center-to-center distance of two adjacent pointolite generally is 2 ~ 5 millimeters, because the interval of light source is too big leads to luminous homogeneity variation easily, consequently, according to the utility model discloses an optimal embodiment, the biggest distance is 10 ~ 15 millimeters between the luminous center of every two adjacent pointolite.

According to a preferred embodiment of the present invention, the point light source in the light source array 2 may be a light emitting diode LED or a light emitting chip. The point light source is a monochromatic light source or a multicolor light source and is used for realizing various light distribution functions. The monochromatic light source only emits light of one color, and the working information is transmitted through the on-off state of the monochromatic light source; the multicolor light source is a multicolor composite point light source or a composite light source comprising at least two monochromatic light sources, and the multicolor light source transmits working information through the on-off state or the conversion of the luminous color of the multicolor light source.

Taking a bicolor light source as an example, a bicolor LED or a bicolor light emitting chip can be adopted in the light band to realize the combination of two or more light distribution functions. The two-color light source can be formed by packaging a two-color light emitting chip or a two-color LED on a circuit board, or independently packaging two single-color LEDs with different light emitting colors on the circuit board, for example, two LEDs with different colors are arranged on a flexible circuit board 1 in two rows, and the LEDs in each row have the same color and are packaged into a light band; alternatively, two different color LEDs are arranged in a row spaced apart from each other. In the application of the car lamp, a yellow light source and a white light source are combined in the same light band to respectively realize the functions of a daytime running lamp, a front position lamp and a front steering lamp, or the yellow light source and a red light source are combined to respectively realize the functions of a rear tail lamp (namely a parking lamp), a brake lamp (namely a brake lamp) and a rear steering lamp.

Because silica gel is a material that electrical insulation is good, high temperature resistant, corrosion-resistant, good heat dissipation and texture are soft, when silica gel packaging shell 3 encapsulates flexible circuit board 1 and light source array 2, all have good guard action to flexible circuit board 1 and light source array 2. As a preferred embodiment of the present invention, the silica gel encapsulating shell 3 has the light scattering agent uniformly dispersed therein. Preferably, the light scattering agent may be one or a combination including two or more of barium sulfate, calcium carbonate, silica, and silicone. When inorganic nanoparticles such as barium sulfate, calcium carbonate and silicon dioxide are added into the silica gel packaging shell 3, light is refracted on the surfaces of the particles for multiple times to realize light diffusion, and the effect of light homogenization is achieved; when the silicone light diffusing agent is added into the silicone packaging shell 3, due to the different refractive indexes of the base material and the silicone beads, the soft light effect can be achieved through repeated light refraction, and the light energy loss is less. The organic silicon photodiffusion agent has the advantages of high photodiffusion efficiency, good compatibility with matrix resin, good dispersibility and heat resistance, low addition amount, balanced light transmission and light uniformity and the like.

in this embodiment, the transparent silica gel that will dope with light scattering agent is as the material of silica gel encapsulation shell 3, when the light that the light source sent passes this silica gel encapsulation shell 3, because the different messenger light of refractive index of light scattering agent and silica gel refracts, the route of marcing of light has been changed, the propagation range has been enlarged, can realize even light, again because the distance between two adjacent pointolite is no longer than 15 millimeters, the light that passes silica gel encapsulation shell 3 is continuous and even from all directions, also promptly the utility model provides a lighting device's light emitting area luminous effect is even.

in practical application, when the flexible circuit board 1 integrated with the light source array 2 is packaged, at least two packaging modes are provided, including split assembly and integral packaging.

For split assembly, namely, a corresponding model of the silica gel packaging shell 3 is designed according to the arrangement mode of the light source array 2 on the flexible circuit board 1, the silica gel packaging shell 3 is independently processed by using the model to obtain a standard component of the silica gel packaging shell 3, and then the standard component of the silica gel packaging shell 3 is assembled with the flexible circuit board 1 integrated with the light source array 2. The split processing and reassembling method is beneficial to batch and scale production of the silica gel packaging shell 3, meanwhile, the flexible circuit board 1 with the light source cannot be scrapped when the silica gel packaging shell 3 is processed badly, packaging errors can be avoided, and cost is reduced.

When the silica gel packaging shell 3 is separately processed and formed, the silica gel packaging shell 3 is provided with an opening end, the opening end of the silica gel packaging shell 3 is fixed on the end surface of the flexible circuit board 1, so that the silica gel packaging shell 3 and the flexible circuit board 1 are assembled together, and meanwhile, the silica gel packaging shell 3 and the end surface of the flexible circuit board 1 enclose a cavity. Alternatively, the silicone packaging case 3 and the flexible circuit board 1 may be assembled together mechanically. According to the utility model relates to a preferred embodiment, the protective layer of light source array 2 can also be set up in the cavity that silica gel packaging shell 3 and flexible circuit board 1 terminal surface enclose.

according to the utility model discloses another preferred embodiment, the flexible circuit board 1 that integrates there is light source array 2 encapsulates through the silica gel is integrative for there is not the clearance between silica gel encapsulation shell 3 and the light source array 2. Due to the fact that machining precision of integral machining is high, assembly errors between the silica gel packaging shell 3 and the flexible circuit board 1 can be reduced.

In the utility model, a plurality of point light sources are arranged on the flexible circuit board 1 in an array form at certain intervals, and when a plurality of LEDs are arranged in a line along the extending direction of the flexible circuit board 1, the cross section of the silica gel packaging shell 3 can be rectangular, triangular or peak-shaped; when a plurality of LEDs are arranged in two or more rows along the extending direction of the flexible circuit board 1, the cross section of the silicone packaging shell 3 may be rectangular or continuous peak-shaped.

Further, the vehicle lighting device further includes a light guide 4, and the light guide 4 is mounted on the light emitting side of the light source array 2. The light guide region of the light guide member 4 includes a light incident surface and a light emitting surface, wherein the light incident surface of the light guide member 4 is the surface of the light guide member 4 closer to the light source array 2, and the light emitting surface is the surface of the light guide member 4 farther from the light source array 2. The light-incident surface of the light-guiding member 4 is substantially parallel to the extending direction of the light strip, and is generally narrow for receiving light propagating in the direction perpendicular to the light strip. According to a preferred embodiment of the present invention, the light incident surface of the light guide member 4 may be provided with leather patterns, light guide teeth or coated with a light scattering layer. When light emitted by the light source enters the light incident surface of the light guide member 4 after passing through the silica gel packaging shell 3, the dermatoglyph, the light guide teeth or the light scattering layer refracts the light, so that continuous and uniform light emitting effects can be observed from various angles on the light emergent surface of the light guide member 4. The utility model discloses in, set up dermatoglyph, leaded light tooth or scribble at the income plain noodles of leaded light spare 4 through add light scattering agent in silica gel packaging shell 3 and establish the light scattering layer for scatter light, reach the purpose of even light, above-mentioned even light measure alternative can among the practical application.

Further, the vehicle lighting device further comprises a heat dissipation support, the heat dissipation support is arranged on the other end face, back to the light source array 2, of the flexible circuit board 1, and the heat dissipation support is used for dissipating heat of the flexible circuit board 1 and the LED mounted on the flexible circuit board 1.

The following describes the arrangement of the light source array and the shape and effect of the silica gel encapsulating case 3 in different arrangements.

Example 1

as shown in fig. 2, when a plurality of LED light sources 5 are arranged in a row on the flexible circuit board 1 at certain intervals, the cross section of the silicone packaging case 3 is rectangular. The light-transmitting surface of the silica gel packaging shell 3 comprises a plane which extends perpendicularly outwards from the end surface of the flexible circuit board 1 and a plane which is connected with the perpendicular plane and is parallel to the end surface of the flexible circuit board 1, namely, the light-transmitting surface of the silica gel packaging shell 3 is of a plane structure, the light-transmitting surface of the plane structure has a dispersing effect on light rays, the illumination range is enlarged, but the light rays transmitted along the light band perpendicular direction are less, the light rays entering the light-incident surface of the light guide piece 4 are less, and the light-emitting efficiency is lower.

In this embodiment, the flexible circuit board 1 may be integrally encapsulated by the silicone, so that there is no gap between the silicone encapsulating case 3 and the LED light source 5. Or, according to a preferred embodiment of embodiment 1, when the silicone package 3 and the flexible circuit board 1 are assembled together, as shown in fig. 3, a light source protection cover 6 is disposed in a cavity enclosed by the silicone package 3 and the flexible circuit board 1, and the light source protection cover 6 is located between the LED light source 5 and the silicone package 3 and is used for providing buffer protection for the LED light source 5 when the light band is bent. Meanwhile, because the assembled optical tape still has the characteristic of flexibility, the light source protective cover 6 also adopts flexible materials including transparent silica gel, resin and the like.

example 2

as shown in fig. 4, when a plurality of LED light sources 5 are arranged in a row on the flexible circuit board 1 at certain intervals, the cross section of the silicone packaging shell 3 is peak-shaped, the light-transmitting surface of the silicone packaging shell 3 is an arc surface protruding outward from the end surface of the flexible circuit board 1, and the arc surface integrally forms a peak-shaped structure for sealing the LED light sources 5. The arc-shaped light transmitting surface has a convergence effect on light rays, and light emitted by the LED light source 5 is converged along the vertical direction of the extension direction of the light band, so that more light enters the light incident surface of the light guide member 4, and the illumination efficiency is improved. Meanwhile, the arc-shaped light-transmitting surface does not influence the light distribution along the trend tangential direction of the light band, so that the problem of uneven light emission is avoided.

In this embodiment, the flexible circuit board 1 may be integrally encapsulated by the silicone, so that there is no gap between the silicone encapsulating case 3 and the LED light source 5. Or, according to a preferred implementation manner of the embodiment 2, as shown in fig. 5, a light source protecting cover 6 is disposed in a cavity enclosed by the silicone packaging shell 3 and the flexible circuit board 1, and the light source protecting cover 6 is located between the LED light source 5 and the silicone packaging shell 3 and is used for providing buffer protection for the LED light source 5 when the light strip is bent.

Example 3

as shown in fig. 6, the LED light sources 5 are arranged in two rows on the flexible circuit board 1, the cross section of the silicone packaging case 3 is rectangular, that is, the light-transmitting surface of the silicone packaging case 3 is a planar structure, and the light-guiding member is not shown in fig. 6. According to a preferred embodiment of the embodiment 3, a light source protection cover 6 is arranged in a cavity enclosed by the silicone packaging shell 3 and the flexible circuit board 1. The structures of the silicone packaging shell 3 and the light source protection cover 6 are similar to those of embodiment 1, and are not described herein again.

Example 4

As shown in fig. 7, a plurality of LED light sources 5 are arranged in two rows on the flexible circuit board 1, and the cross section of the silicone packaging case 3 is a continuous peak shape. Specifically, the light-transmitting surface of the silica gel packaging shell 3 comprises an arc-shaped light-transmitting surface protruding outwards from the flexible circuit board 1 from the outer side of one row of the LED light sources 5 and an arc-shaped light-transmitting surface protruding outwards from the flexible circuit board 1 from the outer side of the other row of the LED light sources 5, the two arc-shaped light-transmitting surfaces are connected to form a continuous peak-shaped structure, and the outer side of the LED light source 5 is the side far away from the other row of the LED light sources 5. The arc-shaped light-transmitting surface converges the light emitted by the LED light source 5 along the vertical direction of the extending direction of the light band, so that the lighting efficiency is improved.

According to the technical scheme provided by the utility model, on the first hand, the flexible circuit board is soft, so that the appearance of the lighting device is changeable, and the lighting device can adapt to the shape change of the car lamp; in a second aspect, the flexible circuit board integrated with the light source has at least two packaging modes, wherein the split assembly mode can reduce the packaging error rate and save the cost, and the integral packaging mode improves the packaging precision; in the third aspect, the light source array can realize the effects of time sequence and dynamic lighting under the control of the integrated control module, and the car lamp model with flexible assembly line type is manufactured, thereby enriching the visual effect of the car lamp.

The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited thereto. In the technical idea scope of the present invention, it can be right to the technical solution of the present invention perform multiple simple modifications, including each technical feature combined in any other suitable manner, these simple modifications and combinations should be regarded as the disclosed content of the present invention, and all belong to the protection scope of the present invention.

Claims (10)

1. The vehicle lighting device is characterized by comprising a flexible circuit board, a light source array, a silica gel packaging shell and an integrated control module;

The light source array is integrated on one end face of the flexible circuit board;

The silica gel packaging shell is connected with the end face of the flexible circuit board and used for packaging the light source array;

the integrated control module is electrically connected with the flexible circuit board and used for controlling the light source array to be on or off according to a set time sequence.

2. The vehicular illumination device according to claim 1, wherein a plurality of point light sources are arranged in at least one row at intervals along an extending direction of the flexible circuit board to constitute the light source array;

The light source array comprises independent point light sources and a point light source group formed by connecting a plurality of point light sources in series;

the integrated control module is used for outputting a first control signal for driving the point light source group to be on and off according to a time sequence and a second control signal for driving the point light source group to be on and off according to the time sequence.

3. the vehicular illumination device according to claim 2, wherein the cross section of the silicone encapsulant case is rectangular or peak-shaped when the point light sources are aligned in a line along the extending direction of the flexible circuit board;

when the point light sources are arranged in two or more rows along the extending direction of the flexible circuit board, the cross section of the silica gel packaging shell is rectangular or continuous peak shape.

4. The vehicular illumination device according to claim 2 or 3, wherein a maximum distance between light emitting centers of every two adjacent point light sources is 10 to 15 mm.

5. the vehicular illumination device according to claim 2 or 3, characterized in that the point light source is a Light Emitting Diode (LED) or a light emitting chip;

The point light source is a monochromatic light source or a multicolor light source and is used for realizing various light distribution functions.

6. The vehicular lighting device according to claim 1, wherein the silicone encapsulant has the light scattering agent uniformly dispersed therein.

7. The vehicle lighting device according to claim 6, wherein the open end of the silicone packaging shell is fixed on the end face of the flexible circuit board and encloses a cavity with the end face of the flexible circuit board;

A light source protection cover is arranged in the cavity.

8. The vehicular lighting device according to claim 1, wherein the flexible circuit board integrated with the light source array is integrally encapsulated by silicone so that there is no gap between the silicone encapsulation case and the light source array.

9. The vehicle lighting device according to claim 1, further comprising a light guide mounted on a light emitting side of the light source array;

The light guide area of the light guide piece comprises a light incident surface and a light emergent surface, and the light incident surface of the light guide area can be provided with dermatoglyphs or coated with a light scattering layer.

10. the vehicle lighting device according to claim 1, further comprising a heat dissipation bracket provided on the other end surface of the flexible circuit board facing away from the light source array.