KR101021929B1 - Lamp assembly for vehicle - Google Patents

Abstract

A vehicle lamp assembly is provided. Vehicle lamp assembly according to an embodiment of the present invention is a light source, a reflector for reflecting and condensing the light emitted from the light source, a cylindrical rotating shield formed with one or more shield protrusions to shield a portion of the light reflected from the reflector to form a predetermined beam pattern And a lens for refracting the light emitted from the light source and irradiating in all directions, and an additional reflecting part is formed at an upper end of the reflector to reflect a predetermined light from the light source to the upper part of the reflector toward the omnidirectional direction of the lens, An upper portion of the lens is provided with an additional lens unit for irradiating light reflected from the additional reflector in all directions.

Car lamps, headlights, light sources, headlights, cylindrical rotating shields

Description

Lamp assembly for vehicle

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle lamp assembly, and more particularly, to a projection type vehicle lamp assembly that provides various beam patterns according to the driving environment of the vehicle.

A head lamp, commonly referred to as a headlight, is a lamp that functions to shine ahead of a vehicle. A conventional headlamp for a vehicle provides a fixed beam pattern to a driver regardless of various road conditions. However, in recent years, the adaptive front light device (Adaptive Front) enables the driver to obtain a suitable view for various road conditions by changing the beam pattern to an optimal state according to the road and surrounding conditions continuously changing as the vehicle travels. Lighting System (hereinafter referred to as 'AFLS') is being developed.

1 is a schematic view showing the configuration of a headlamp of a general projection type in which a signal plate is formed.

As shown in FIG. 1, a general projection type headlamp includes a light source 10, an elliptical reflector 20 reflecting and condensing light emitted from the light source 10, and a light source 10. Aspheric lens 30 for refracting the light emitted from the light emitted in all directions and a lamp shield 40 for blocking a part of the light emitted from the light source 10, etc., the upper end of the lamp shield 40 A signal plate 41 is fixed and installed to reflect the light reflected by the reflector 20 upwardly into the aspherical lens 30. By allowing the light reflected by the reflector 20 to be incident upwardly by the signal plate 41 of the lamp shield 40 to the aspherical lens 30, by increasing the front field of view for the identification of road signs when driving a vehicle at night. In addition, it can improve the visibility of the driver at night. Such a signal plate is typically left and right width 20mm and the front and rear width is required about 15mm.

In the general projection type head lamp having the above configuration, unlike the head lamp of the clear type, the light reflected by the reflector 20 is disposed on the upper end of the lamp shield 40 which is a focal point of the reflector 20. Since the light is collected, various shield protrusions may be formed on the cylindrical rotating shield along the circumference of the cylinder to shield a part of the light reflected by the shield protrusion by the rotation of the cylindrical rotating shield, thereby realizing various beam patterns.

In the case of forming various beam patterns using the cylindrical rotating shield, the signal plate must be formed on each shield protrusion in order to increase the forward field of view. However, the distance between neighboring shield protrusions is typically only 4 mm to form a signal plate. This is because, as described above, the shield protrusion is typically required to have a front and rear width of about 15 mm, since the distance between neighboring shield protrusions is typically 4 mm, and thus the signal plate cannot cover the neighboring shield protrusions to form a desired beam pattern. to be.

In addition, as described above, the shield plate is generally about 15 mm in width before and after, and because of its large width, there is a problem in that light to be irradiated onto the road surface is excessively cut.

The present invention is designed to improve the above problems, and an object of the present invention is to allow the light emitted from the light source to be upwardly incident even when using a cylindrical rotating shield, so as to identify road signs when driving a vehicle at night. By increasing the forward field of view, it is possible to improve the remote visibility of the night driver.

The objects of the present invention are not limited to the above-mentioned objects, and other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, a vehicle lamp assembly according to an embodiment of the present invention is a light source; A reflector reflecting and condensing the light emitted from the light source; A cylindrical rotating shield having one or more shield protrusions formed to shield a portion of the light reflected from the reflector to form a predetermined beam pattern; And a lens for refracting the light emitted from the light source and irradiating in all directions, and at an upper end of the reflecting mirror, additional reflection for reflecting a predetermined light from the light source toward the top of the reflector toward the omnidirectional direction of the lens. An additional lens is formed, and an additional lens unit for irradiating light reflected from the additional reflector in all directions is formed on the upper portion of the lens.

According to the vehicle lamp assembly of the present invention as described above has one or more of the following effects.

First, by allowing the light emitted from the light source to be upwardly incident without using a signal plate, by increasing the front field of view for identifying road signs when driving a vehicle at night, it is possible to improve the distance visibility of a night driver.

Second, there is an advantage that can solve the problem that the light that is to be irradiated on the road surface is excessively cut when using the signal plate.

Details of the embodiments are included in the detailed description and drawings.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms, and only the embodiments make the disclosure of the present invention complete, and the general knowledge in the art to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, the present invention will be described with reference to the drawings for describing a vehicle lamp assembly according to embodiments of the present invention.

First, prior to describing another vehicle lamp assembly in an embodiment of the present invention will be described a vehicle lamp assembly with a cylindrical rotating shield is formed.

2 is a schematic view showing a vehicle head lamp having a cylindrical rotating shield, and FIGS. 3 and 4 are perspective views illustrating a cylindrical rotating shield according to an embodiment of the present invention.

As shown in the drawing, the vehicle lamp assembly in which the cylindrical rotating shield 130 is formed includes an ellipsoid-shaped reflector 110, a light source 120 disposed at the first focal point F1 of the reflector 110, and a reflector 110. 2 is positioned around the focal point F2 to shield a portion of the light reflected by the reflector 110 and the lens 140 for irradiating light passing through the cylindrical rotation shield 130 in all directions. ) May be included.

A reflecting surface 111 reflecting light generated from the light source 120 is formed inside the reflecting mirror 110, and the reflecting surface 111 reflects the light generated from the light source 120 to generate a second focal point F2. ) To reach

In this case, the shield protrusion 131 formed on the cylindrical rotation shield 130 may form a beam pattern by partially shielding the light focused at the second focus. According to the driving conditions, it is necessary to form various beam patterns such as a high beam and a low beam, and by forming various shield protrusions 131 along the circumferential surface of the cylindrical rotating shield 130, by rotating the cylindrical rotating shield 130 The shield protrusion 131 forming the required beam pattern is positioned at the position of the second focal point to form the required beam pattern according to the driving conditions.

3 and 4 illustrate a cylindrical rotation shield 130 according to an embodiment of the present invention, the cylindrical rotation shield 130 is a first pattern portion 131 for changing the beam pattern for the driving lane of the vehicle ) And a second pattern unit 132 for changing a beam pattern for the opposite lane of the driving lane of the vehicle, that is, the opposite vehicle.

The first pattern portion 131 has a plurality of shield protrusions 131a, 131b, and 131c protruding from the cylindrical central portion 130a along the circumference of the central portion 130a in the major axis direction, that is, the rotation axis direction. It may include. In this case, the plurality of shield protrusions 131a, 131b, and 131c will be referred to as a first shield protrusion 131a, a second shield protrusion 131b, and a third shield protrusion 131c, respectively. At this time, the first shield protrusion 131a, the second shield protrusion 131b, and the third shield protrusion 131c respectively form different beam patterns according to the shape of the shield protrusion of the uppermost surface.

As described above, the plurality of shield protrusions 131a, 131b, and 131c may block a part of the light reaching the second focal point F2 to form a desired beam pattern for the driving lane of the vehicle.

For example, as shown in Table 1, the beam pattern of the vehicle is divided according to the high beam and the low beam, which may be determined according to the conditions of the driving speed, road characteristics, road surface condition, lane direction, etc. of the vehicle.

TABLE 1

Kinds Beam pattern Downlight Class C
(Basic Beam)

Class V
(Town Beam)

Class E
(Motorway Light)

Class w
(Wetroad Light)

RHD

A high beam High

At this time, the dotted line in Table 1 can be understood as a beam pattern of Class C, it is shown for comparison with each beam pattern. In addition, since the conditions for forming such a beam pattern is an image known technique, detailed description thereof will be omitted.

The plurality of shield protrusions 131a, 131b, and 131c adjust the degree of blocking the light reflected from the reflector 110 as the central portion 130a rotates with the long axis direction as the rotation axis. The same beam pattern can be formed.

As shown in the drawing, the second pattern portion 132 may be configured to connect the top trajectories of the plurality of shield protrusions 131a, 131b, and 131c of the first pattern portion 131. At this time, the second pattern portion 132 is composed of a surface connecting the uppermost trajectories of the plurality of shield protrusions (131a, 131b, 131c), when rotating the cylindrical rotation shield 130 to convert the beam pattern, This is to avoid affecting the conversion of the beam pattern on vehicles in the opposite lane.

That is, when the second pattern portion 132 rotates the plurality of shield protrusions 131a, 131b, and 131c along the rotation axis of the central portion 130a of the cylindrical rotation shield 130 to change the beam pattern, the second pattern portion 132 may rotate. This is to prevent glare from the opposite vehicle due to the shield projection.

In FIG. 3, it is assumed that the shield protrusion of the first pattern portion is formed to extend in the second pattern portion, and when the cylindrical rotation shield 130 passes between the shield protrusions when rotating and converting the beam pattern, the light is shielded. This is because there is no element to form a high beam beam pattern to cause glare on the opposite car.

Accordingly, the beam pattern is smoothly changed in the driving lane of the vehicle by the first pattern unit 131, and glare can be prevented when the beam pattern is changed in the opposite lane.

On the other hand, the cylindrical rotating shield 130 of the present invention is the third pattern portion 133 for changing the beam pattern for the case that the lane is changed, that is, the driving lane and the opposite lane for each region or country opposite to each other and It may further include a fourth pattern portion 134 for uplight. At this time, in the embodiment of the present invention, the third pattern part 133 forms the beam pattern of RHD in Table 1 and the fourth pattern part 134 of High in Table 1 described above. The third pattern portion 133 has a shape in which one of the shield protrusions of the first pattern portion 131 and the pattern formation thereof are reversed, and the fourth pattern portion 134 has a separate shield protrusion for upward lighting. It consists of a cylindrical central portion 130a without.

For convenience of explanation, the first pattern part 131, the second pattern part 132, the third pattern part 133, and the fourth pattern part 134 are divided into the first pattern part 131. Although it is described by different names because it is formed of a plurality of shield protrusions (131a, 131b, 131c), each of the formed along the circumferential surface of the cylindrical rotating shield 130 to form a beam pattern may be collectively referred to as shield projections. . In particular, the shield protrusions 131a, 131b, and 131c of the first pattern portion 131, the shield protrusions 131a, 131b, and 131c, and the portions of the second pattern portions 132 extending are combined into one shield protrusion. It can be interpreted.

The shape and structure of the cylindrical rotating shield 130 described with reference to FIGS. 3 and 4 are not limited thereto, and may be modified into other shapes and structures.

As described above, various beam patterns may be formed by forming various shield protrusions on the circumferential surface of the cylindrical rotating shield 130. As described above, when the cylindrical rotating shield 130 is used, the signal plate may be structurally formed. Not easy

Hereinafter, even when using the cylindrical rotating shield 130 according to an embodiment of the present invention will be described a vehicle lamp assembly that can increase the amount of light incident upwardly.

5 is a perspective view of a reflector and a lens constituting a vehicle lamp assembly according to an embodiment of the present invention, FIG. 6 is a side view of the vehicle lamp assembly according to an embodiment of the present invention, and FIG. 7 is part A of FIG. 8 is a plan view of a vehicle lamp assembly according to an embodiment of the present invention, FIG. 9 is a plan view of a vehicle lamp assembly according to another embodiment of the present invention, and FIG. 10 is additional from FIG. 9. It is a perspective view of the lens in which the curved surface was formed in the light output part of the lens part.

The lamp assembly for a vehicle according to the exemplary embodiment of the present invention may include a light source 120, a reflector 110, a cylindrical rotating shield 130, and a lens 140.

The light source 120 serves to provide light for illuminating the front of the vehicle, and may use a conventional high voltage emission (HID), a halogen light source and an LED light source. The light source 120 is positioned at the first focal point of the elliptical reflector 110 to emit light.

The reflector 110 has an elliptical cross section to accommodate the light source 120 therein. Since the inside has an elliptical cross section, the light reflects the light emitted from the light source 120 positioned at the first focus of the reflector 110 to condense the light to the second focus portion of the reflector 110. The inner reflection surface of the reflector 110 may include a coating layer on which a material having a high reflection coefficient such as aluminum or silver is deposited.

The cylindrical rotating shield 130 serves to shield a portion of the light emitted from the light source 120, preferably at the second focal position of the reflector 110, between the light source 120 and the lens 140. More specifically, except for forming a high beam pattern, light emitted downward from the light emitted from the light source 120 is reflected from the reflector 110 to block a part of the light traveling upward. Form a pattern.

Various shield protrusions 131 formed on the circumferential surface of the cylindrical rotating shield 130 form a variety of beam patterns, the cylindrical rotation so that each shield protrusion 131 is located in the second focal position according to the required beam pattern. The shield 130 must be rotated. Accordingly, the cylindrical rotation shield 130 may be configured to rotate using a power generator such as a motor (not shown) and a power transmission device such as a gear (not shown).

The lens 140 serves to irradiate the vehicle in all directions by refracting the light emitted from the light source 120.

As shown in FIG. 6, an additional reflector 115 is formed at an upper end of the reflector 110 to reflect the light arriving from the light source 120 toward the omnidirectional direction of the lens 140 instead of the second focus. Can be. Thus, the additional reflector 115 constituting the elliptical reflector 110 is not exceptionally constructed as part of an elliptical shape.

An additional lens unit 145 may be formed on the lens 140 to radiate light reflected from the additional reflection unit 115 in all directions. The additional lens unit 145 is configured as a part of the lens 140. Preferably, the light incident surface reflected and incident from the additional reflecting unit 115 is formed as a vertical surface, and passes through the additional lens unit 145. The light exit surface from which light exits in all directions may be formed to be inclined so as to be closer to the light incident surface toward the downward direction.

This is illustrated in detail in FIG. 7, in which light incident perpendicularly to the light incident surface penetrates perpendicularly to the light incident surface without refraction. When the light incident surface and the light exit surface have an angle of α, light passing through the additional lens unit 145 through the light incident surface is incident on the light exit surface at an angle of α. The exit surface has an angle of β and proceeds upward.

For reference, when the light travels to the interface of different media, the propagation speed of the light varies depending on the difference in the refractive indices of the media, and thus the light propagation path is bent. This is called reflection. According to such a refractive phenomenon, when light travels from a dense medium having a large refractive index N to a relatively small medium with a small refractive index N, the angle of refraction becomes larger than the angle of incidence. The angle of refraction becomes small.

For example, referring to FIG. 7, when the light path is changed according to the difference in refractive index N between the additional lens unit 145 of the lens 140 and the ambient air, the lens (additional lens unit 145) is described. 140) has a refractive index N greater than the ambient air. Therefore, when light propagates from the dense medium lens 140 to the medium air, the refractive angle β becomes larger than the angle of incidence α so that the path of the light is upward.

In addition, as illustrated in FIGS. 9 and 10, a plurality of convex or concave curved surfaces 146 having a predetermined radius of curvature may be formed on the light exit surface of the additional lens unit 145 in the horizontal direction. The horizontal luminous intensity is compensated by the plurality of curved surfaces 146 so that the light irradiated through the additional lens unit 145 forms a flat and smooth pattern in the horizontal direction.

In this case, the plurality of curved surfaces 146 may have different radii of curvature depending on the degree of horizontal luminance compensation. For example, the radius of the curved surface is designed to be greater in the area corresponding to the area where the degree of horizontal luminance compensation of the light is required, so that light can be diffused and irradiated in the horizontal direction.

In addition, the additional reflector 115 may also be configured such that a plurality of curved surfaces having a predetermined radius of curvature are formed in the horizontal direction. As shown in FIG. 8, by forming a plurality of curved surfaces on the additional reflector 115, the light reflected by the additional reflector 115 may be diffused and irradiated in the horizontal direction. Therefore, the light diffused in the horizontal direction reaches the additional lens unit 145 of the lens 140 and irradiated in all directions, whereby the horizontal luminance can be compensated for.

Those skilled in the art will appreciate that the present invention can be embodied in other specific forms without changing the technical spirit or essential features of the present invention. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is indicated by the scope of the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and the equivalent concept are included in the scope of the present invention. Should be interpreted.

1 is a schematic diagram showing the configuration of a conventional projection type head lamp in which a signal plate is formed.

2 is a schematic diagram illustrating a vehicle headlamp having a cylindrical rotating shield.

3 and 4 are perspective views illustrating a cylindrical rotating shield according to an embodiment of the present invention.

5 is a perspective view of a reflector and a lens constituting a vehicle lamp assembly according to an embodiment of the present invention.

6 is a side view of a vehicle lamp assembly according to an embodiment of the present invention.

FIG. 7 is an enlarged view of a portion A of FIG. 6.

8 is a plan view of a vehicle lamp assembly according to an embodiment of the present invention.

9 is a plan view of a vehicle lamp assembly according to another embodiment of the present invention.

FIG. 10 is a perspective view of a lens having a curved surface in the light output part of the additional lens part of FIG. 9.

<Explanation of symbols for the main parts of the drawings>

110: reflector

115: additional reflector

120: light source

130: cylindrical rotating shield

140: lens

145: additional lens unit

Claims (4)

Light source; A reflector reflecting and condensing the light emitted from the light source; A cylindrical rotating shield having one or more shield protrusions formed to shield a portion of the light reflected from the reflector to form a predetermined beam pattern; Refractive light emitted from the light source includes a lens for irradiating in all directions, At the upper end of the reflector is formed an additional reflector for reflecting the predetermined light from the light source to the upper portion of the reflector to the upper portion of the lens, The upper lamp unit is a vehicle lamp assembly formed with an additional lens unit for irradiating the light reflected from the additional reflector in all directions. The method of claim 1, The additional lens unit The light incident surface is formed into a vertical surface, The light emitting surface of the vehicle lamp assembly formed to be inclined so as to be closer to the light incident surface toward the downward. The method of claim 2, The light output surface is a vehicle lamp assembly formed with a plurality of curved surfaces having a predetermined radius of curvature in the horizontal direction. The method of claim 1, The additional reflector is a vehicle lamp assembly formed with a plurality of curved surfaces having a predetermined radius of curvature in the horizontal direction.

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