KR20200105037A - Horizontal arrangement type multi division-multi lighting vehicle lighting device using tir lens - Google Patents

Abstract

According to the present invention, disclosed is a horizontal array type multi-division-multi-lit vehicle lighting apparatus using a TIR lens. The present invention has the advantage of being able to miniaturize a lighting device, being able to easily be assembled, and provide a clear beam pattern. According to the present invention, the horizontal array type multi-division-multi-lit vehicle lighting apparatus using the TIR lens comprises: a light source unit (110) wherein a plurality of LED chips (110a, 110b) capable of individually controlling lighting are arranged in a rectangular shape to output light; a TIR lens unit (120) installed in correspondence with the LED chips (110a, 110b) installed in the light source unit (110), condensing the light inputted from the LED chips (110a, 110b) to form an arbitrary light distribution so as to reduce the spherical aberration of projection lens units (130, 130a) and output the light; and projection lens units (130, 130a) which image and output the light transmitted through the TIR lens unit (120).

Description

HORIZONTAL ARRANGEMENT TYPE MULTI DIVISION-MULTI LIGHTING VEHICLE LIGHTING DEVICE USING TIR LENS}

The present invention relates to a horizontal array type multi-division-multi-lit vehicle lighting device using a TIR lens, and more specifically, a horizontal array type using a TIR lens that can be miniaturized, easy to assemble, and provides a clear beam pattern. It relates to a multi-split-multi-lit vehicle lighting device.

In general, a vehicle includes a lamp having a lighting function for easily identifying objects located around the vehicle during night driving and a signal function for informing other vehicles or road users of the driving state of the vehicle.

For example, headlamps and fog lights mainly perform lighting functions, while turn signals, tail lights, brake lights, and side markers mainly perform signal functions, and in some cases, both lighting and signal functions. You may.

Among them, a vehicle headlamp has an essential function of securing a driver's vision at night by irradiating light in the same direction as the driving direction of the vehicle.

1 is a view showing a general headlamp for a vehicle, wherein the headlamp 1 includes a body frame 10 formed by forming a plurality of heat sinks, and a light source module 20 and a reflector on top of the body frame 10 30), and a projection lens 40 at the head of the main body frame 10 is configured to be coupled through a holder bracket 50 as a medium.

Since it is difficult to create an optimal driving environment according to the driving condition of the vehicle, for example, the driving speed of the vehicle, the driving direction, the road surface condition, and the ambient brightness using such a vehicle headlamp, recently, the light distribution according to the driving condition of the vehicle An adaptive front lighting system that converts patterns is used.

The adaptive headlamp system adaptively converts the light distribution pattern according to the driving condition of the vehicle by making the cutoff patterns of light generated from the light sources different from each other.

Recently, attempts have been made to overcome the increase in the conventional complex lamp configuration and processing steps by introducing a light-emitting diode, and it is possible to overcome the spatial problem of the lamp due to its small size and extending the life of the lamp due to the characteristics of the light emitting diode itself. I can.

Meanwhile, among various vehicle lamps, various beam patterns are used for headlamps compared to other lamps. For example, the headlight irradiates light having an optimal beam pattern according to the driving condition of the vehicle, such as driving speed, driving direction, road surface condition, and ambient brightness, thereby ensuring sufficient visibility of the driver, while causing glare to surrounding vehicles. Will prevent it from becoming.

In addition, when a light emitting diode is used, one or more light emitting diodes are used to secure a sufficient amount of light while irradiating light of each beam pattern.

2 is an exemplary diagram showing the arrangement of a light source module of a vehicle headlamp according to the prior art, a light source unit (61, 61a, 61b) in which a plurality of LED chips capable of individual lighting control are arrayed, and light emitted from the LED chip. A first light source module 60, a second light source module 60a' and a third light source module 60b having condensing lenses 62, 62a, 62b that are condensed to form an arbitrary light distribution and output to be transmitted. The first light source module 60, the second light source module 60a, and the third light source module 60b are configured to include a first light source to irradiate light in different directions with respect to the central axis C. The module 60, the second light source module 60a, and the third light source module 60b are disposed.

However, in the vehicle headlamp according to the prior art, a plurality of light source modules are arranged in different directions to form a beam pattern, so that the manufacturing process of the headlamp is complicated through an aiming process for adjusting the beam pattern. There is a problem of losing.

In addition, by installing a plurality of light source modules, there is a problem in that the size and volume of the headlamp increase.

Korean Registered Patent Publication No. 10-1307976 (Name of invention: Multiple LED modules and vehicle LED headlamps including the same)

In order to solve this problem, an object of the present invention is to provide a horizontal array type multi-division-multi-lit vehicle lighting apparatus using a TIR lens capable of miniaturization, easy assembly, and providing a clear beam pattern.

In order to achieve the above object, an embodiment of the present invention is a horizontal array type multi-division-multi-lit vehicle lighting device using a TIR lens, in which a plurality of LED chips capable of individually lighting control are arrayed in a rectangular shape to output light. Light source unit; A TIR lens unit installed in correspondence with the LED chip installed in the light source unit, and configured to form and output light distribution so as to reduce spherical aberration of the projection lens unit by condensing light input from the LED chip; And a projection lens unit configured to image and output the light transmitted through the TIR lens unit.

In addition, the TIR lens unit according to an embodiment of the present invention is characterized in that the exit surface is formed of a lens array in which a plurality of lenses having a positive curvature are arranged having different curvatures in a vertical direction and a horizontal direction.

In addition, the TIR lens unit according to an embodiment of the present invention is characterized in that the emission surface of the arrayed lens arrays is arranged in a concave shape d1 having a negative curvature in a direction of an optical axis c from which light is output.

In addition, the TIR lens unit according to an embodiment of the present invention is characterized in that the incident surfaces of the arrayed lens arrays are arranged in a horizontal shape d2 parallel to the light source unit.

In addition, the projection lens unit according to an embodiment of the present invention is characterized in that it is made of either a double-sided convex lens having a positive curvature or a convex lens having a positive curvature of only the exit surface.

The present invention has the advantage that it is possible to reduce the size of the lighting devices arranged in the horizontal direction and easy to assemble.

In addition, the present invention has the advantage of providing a clear beam pattern.

1 is a perspective view showing a general vehicle headlamp.
2 is an exemplary view showing the arrangement of a light source module of a vehicle headlamp according to the prior art.
3 is a perspective view showing a horizontal array type multi-division-multi-lit vehicle lighting device using a TIR lens according to an embodiment of the present invention.
4 is an exploded perspective view showing the configuration of a horizontal array type multi-division-multi-lit vehicle lighting device using a TIR lens according to FIG. 3.
FIG. 5 is a plan view showing the arrangement of a TIR lens and a projection lens of the horizontally arranged multi-division-multi-lit vehicle lighting apparatus using the TIR lens according to FIG. 3.
FIG. 6 is an exemplary view showing a beam pattern of a vehicle illumination device for horizontally arranged multi-division-multiple lighting using a TIR lens according to FIG. 3.
FIG. 7 is a plan view showing another embodiment of a TIR lens and a projection lens of the horizontally arranged multi-division-multi-lit vehicle lighting apparatus using the TIR lens according to FIG. 3.
FIG. 8 is an exemplary view showing a beam pattern of a vehicle illumination device for horizontally arranged multi-division-multiple lighting using a TIR lens according to FIG. 7.
9 is an exemplary view showing a beam pattern according to the operation of the horizontal array type multi-division-multi-lit vehicle lighting device using the TIR lens according to FIG. 3.
FIG. 10 is an exemplary view showing a combination of a left beam pattern and a right beam pattern using the horizontally arranged multi-division-multi-lit vehicle lighting device using the TIR lens according to FIG. 3.
FIG. 11 is another exemplary view showing a combination of a left beam pattern and a right beam pattern using the horizontally arranged multi-division-multi-lit vehicle lighting device using the TIR lens according to FIG. 3.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of a horizontally arranged multi-division-multi-lit vehicle lighting apparatus using a TIR lens according to an embodiment of the present invention will be described in detail.

In this specification, the expression that a certain part "includes" a certain component does not exclude other components, but means that other components may be further included.

In addition, terms such as "... unit", "... group", and "... module" mean units that process at least one function or operation, which can be classified into hardware, software, or a combination of the two.

3 is a perspective view showing a horizontal array type multi-division-multi-lit vehicle lighting device using a TIR lens according to an embodiment of the present invention, and FIG. 4 is a horizontal array type multi-division-multi-lit vehicle using the TIR lens according to FIG. 3 It is an exploded perspective view showing the configuration of the lighting device, and FIG. 5 is a plan view showing the arrangement of a TIR lens and a projection lens of the horizontally arranged multi-division-multi-lit vehicle lighting device using the TIR lens according to FIG. 3.

As shown in FIGS. 3 to 5, the horizontally arranged multi-division-multi-lit vehicle lighting apparatus 100 using a TIR lens according to an embodiment of the present invention includes a light source unit 110, a TIR lens unit 120, and It is configured to include a projection lens unit 130.

In addition, the horizontally arranged multi-division-multi-lit vehicle lighting apparatus 100 using the TIR lens includes a light source unit 110, a TIR lens unit 120, and a lamp housing 101 for fixing the projection lens unit 130. , 102).

The lamp housings 101 and 102 are cylindrical members having a hollow shape, and may include a lamp housing 101 installed on the inside and a lamp housing 102 installed on the outside.

The lamp housing 101 installed on the inner side is configured such that a light source unit 110 and a TIR lens unit 120 are installed and fixed at one end, and a projection lens unit 130 is installed at the other end.

In addition, the lamp housing 102 installed on the outside may be configured as a single lamp housing by engaging and coupling with the other end of the lamp housing 101 installed on the inside, in which case the projection lens unit 130 It may be fixed to the end of the lamp housing 101 installed inside through the coupling of the lamp housings 101 and 102.

The light source unit 110 is a configuration in which a plurality of LED chips 110a and 110b capable of independent individual on/off lighting control are arrayed in a rectangular shape to output light, and may be arranged in a matrix shape having a size of M×N. .

In this embodiment, a configuration in which 12 LED chips are arranged in a horizontal direction is described as an embodiment, but the configuration is not limited thereto, and the number of the LED chips may be appropriately changed.

In addition, the LED chips 110a and 110b of the light source unit 110 are not mixed and overlapped with each other at the boundary of the light distribution area, and the individual LED chips 110a and 110b are fixed so that appropriate light distribution and variable light distribution can be provided. It can be installed at intervals, for example 2㎜ apart.

In addition, the LED chips 110a and 110b of the light source unit 110 may be disposed to be spaced apart from each other at different intervals.

In other words, the distance between the LED chips 110a and 110b, for example, the installation distance from the first LED chip 110a to the last LED chip, such as 2mm, 2mm + α, 2mm + 2α, by a certain distance. By increasing and arranging at intervals between 2 mm and 8 mm, a beam pattern that does not overlap with each other is formed, and at the same time, a blurred beam pattern is formed between the LED chips 110a and 110b spaced apart (space). So that various beam patterns can be implemented.

In addition, when the installation distance of the LED chips 110a and 110b is 2 mm or less, a problem occurs in that it is difficult to recognize a pattern due to overlapping of the emitted light, and when it is 8 mm or more, a desired beam pattern is not formed. .

The TIR lens unit 120 is installed in correspondence with the LED chips 110a and 110b installed in the light source unit 110, and condenses the light input from the LED chips 110a and 110b to collect the projection lens units 130 and 130a. ) To form a light distribution that reduces spherical aberration.

In addition, the TIR lens unit 120 is configured in a trapezoidal hexahedron or a truncated cone shape in which the cross-sectional size of the exit surface 121 is larger than the cross-sectional size of the incident surface 122, so that the light incident from the light source unit 110 is Accordingly, it is refracted through total reflection so that it can be concentrated to the exit surface 121.

In addition, the TIR lens unit 120 is configured as a lens array in which a plurality of lenses having a positive curvature having a different curvature in a vertical direction and a horizontal direction of the exit surface 121 are arranged, It prevents the lights from converging around the focal point and being distorted.

In addition, the TIR lens unit 120 is configured such that the exit surface 121 of the arrayed lens array is arranged in a concave shape d1 having a negative curvature in the direction of the optical axis c from which light is output, so that the TIR lens By allowing the aberration of light transmitted through the unit 120 to be further reduced, the light transmitted through the projection lens unit 130 may form a light distribution pattern as shown in FIG. 6.

In addition, the TIR lens unit 120 is configured such that the incident surface 122 of the arrayed lens array is arranged in a horizontal shape (d2) parallel to the light source unit 110 so that the light output from the light source unit 110 is It is incident on the incident surface 122 in a vertical direction or refracted through total reflection according to an incident angle so that it can be concentrated to the emission surface 121.

The projection lens unit 130 is configured to image and output the light transmitted through the TIR lens unit 120, and the pattern size of the light transmitted through the TIR lens unit 120 is increased in the vertical direction and output Make it possible.

In addition, the projection lens unit 130 may be composed of a double-sided convex lens having a positive curvature in both the incident surface and the exit surface, as shown in FIG. 7, a projection lens unit made of a convex lens having a positive curvature only the exit surface It can also be configured with (130a).

Even if the projection lens unit 130a is configured with a convex lens having a positive curvature of only the exit surface as shown in FIG. 7, the beam patterns of light emitted from the plurality of LED chips arranged horizontally as shown in FIG. 8 do not overlap each other, Can be implemented.

Meanwhile, FIG. 9 is an exemplary view showing a beam pattern according to the operation of the horizontally arranged multi-division-multi-lit vehicle lighting device using the TIR lens according to FIG. 3, and all of the light source unit 110 as shown in FIG. 9(a) Through the beam patterns P1 and P2 formed when the LED chip is turned on, and the beam patterns P1 and P2′ formed when some LED chips 110b are turned off as shown in FIG. 9(b), It can be seen that clear beam pattern formation is achieved by lighting.

In addition, FIG. 10 is an exemplary view showing a combination of a left beam pattern and a right beam pattern output by installing the horizontally arranged multi-division-multi-lit vehicle lighting device according to FIG. 3 on a vehicle.

That is, as shown in FIG. 10, a horizontal array type multi-division-multi-lit vehicle lighting device 100 using a TIR lens according to an embodiment of the present invention is installed on the left and right headlamps, respectively, and the left If aiming is performed so that the beam pattern formed by the headlamp and the right headlamp can be horizontally formed, the left beam pattern image LH formed by the left headlamp and the right headlamp The formed right beam pattern image RH can form a beam pattern having a light distribution angle of 30° in the horizontal direction and a light distribution angle of 6° in the vertical direction.

In addition, FIG. 11 is another exemplary view showing a combination of a left beam pattern and a right beam pattern in which the horizontally arranged multi-division-multi-lit vehicle lighting device using the TIR lens according to FIG. 3 is installed on a vehicle, and is shown by a left headlamp. The formed left beam pattern image (LH) and the right beam pattern image (RH) formed by the right headlamp form a beam pattern having a light distribution angle of 30° in the horizontal direction and a light distribution angle of 6° in the vertical direction. In particular, the beam pattern formed by the left and right headlamps through aiming may be partially overlapped at the center P3.

Therefore, it is possible to clearly form various beam patterns through an illumination device configured in a horizontal arrangement using a TIR lens.

As described above, the present invention has been described with reference to preferred embodiments of the present invention, but those skilled in the art can variously modify and change the present invention within the scope not departing from the spirit and scope of the present invention described in the following claims. You will understand that you can do it.

In addition, reference numerals in the claims of the present invention are provided for clarity and convenience of description, and are not limited thereto. In the process of describing the embodiments, the thickness of the lines shown in the drawings, the size of components, etc. May be exaggerated for clarity and convenience of description, and the above-described terms are terms defined in consideration of functions in the present invention and may vary according to the intention or custom of users and operators. Is to be made based on the contents throughout this specification.

100: lighting device
101, 102: lamp housing
110: light source
110a, 110b: LED chip
120: TIR lens unit
121: exit surface
122: incident surface
130, 130a: projection lens unit
140: bracket

Claims (5)

A light source unit 110 in which a plurality of LED chips 110a and 110b capable of individually controlling lighting are arranged in a rectangular shape to output light;
It is installed in correspondence with the LED chips 110a and 110b installed in the light source unit 110, and condenses the light input from the LED chips 110a and 110b to reduce the spherical aberration of the projection lens units 130 and 130a. A TIR lens unit 120 for forming and outputting an arbitrary light distribution; And
A horizontal array type multi-division-multi-lit vehicle lighting device using a TIR lens including projection lens units 130 and 130a that image and output light that has passed through the TIR lens unit 120. The method of claim 1,
The TIR lens unit 120 uses a TIR lens, characterized in that the emission surface 121 is formed of a lens array in which a plurality of lenses having a positive curvature are arranged having different curvatures in a vertical direction and a horizontal direction. Horizontally arranged multi-split-multi-lit vehicle lighting system. The method of claim 2,
The TIR lens unit 120 includes a TIR lens, characterized in that the emission surface 121 of the arrayed lens array is arranged in a concave shape d1 having a negative curvature in the direction of the optical axis c from which light is output. A horizontal array type multi-segment-multi-lit vehicle lighting system using. The method of claim 3,
The TIR lens unit 120 is a horizontal array type multi-division using a TIR lens, characterized in that the incident surface 122 of the arrayed lens array is arranged in a horizontal shape (d2) parallel to the light source unit 110- Multi-lit vehicle lighting system. The method of claim 1,
The projection lens unit (130, 130a) is a horizontal arrangement using a TIR lens, characterized in that it is made of either a double-sided convex lens having a positive curvature or a convex lens having a positive curvature of only the exit surface Multi-split-multi-lit vehicle lighting system.

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