KR20100027805A - Light guide for vehicle - Google Patents

Light guide for vehicle Download PDF

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Publication number
KR20100027805A
KR20100027805A KR1020080086865A KR20080086865A KR20100027805A KR 20100027805 A KR20100027805 A KR 20100027805A KR 1020080086865 A KR1020080086865 A KR 1020080086865A KR 20080086865 A KR20080086865 A KR 20080086865A KR 20100027805 A KR20100027805 A KR 20100027805A
Authority
KR
South Korea
Prior art keywords
light
total reflection
light source
vehicle
guide device
Prior art date
Application number
KR1020080086865A
Other languages
Korean (ko)
Inventor
오세진
Original Assignee
현대자동차주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 현대자동차주식회사 filed Critical 현대자동차주식회사
Priority to KR1020080086865A priority Critical patent/KR20100027805A/en
Publication of KR20100027805A publication Critical patent/KR20100027805A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/0011—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor with light guides for distributing the light between several lighting or signalling devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/237—Light guides characterised by the shape of the light guide rod-shaped
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles

Abstract

The present invention relates to a vehicle light guide device, by forming all the light emitted from the light source is reflected through the total reflection portion to proceed in a constant direction, the direct light of the light source and the resulting light condensation is prevented and the brightness of the light source The uniformity is improved and the light emitting effect is exerted according to the traveling direction of the light incident from the light source, thereby providing a vehicle light guide device having excellent light emitting performance.

Description

Light Guide Device for Vehicles

The present invention relates to a vehicle light guide device. In more detail, all the light emitted from the light source is reflected through the total reflection portion to form a predetermined direction, thereby preventing direct light and condensation of the light source and improving the uniformity of the brightness of the light source. The present invention relates to a vehicle light guide device having excellent light emission performance by exhibiting a light emission effect according to a traveling direction of light incident from the light.

In general, a vehicle is equipped with various lighting devices in front and rear to provide vehicle safety and convenience of driving. Such lighting devices operate by directly emitting light using a lamp such as a headlight, a taillight, and a turn signal lamp. In addition, the front and the rear of the vehicle is equipped with a reflector for performing a function in a manner of reflecting light so that the vehicle can be easily recognized from the outside.

Recently, various types of lighting devices have been developed within the range of complying with the minimum laws according to the design trend of the vehicle. Especially, a light source emitting light does not directly expose and an indirect lighting effect is exhibited. In recent years, there is a trend that the light guide device to enable the vehicle is actively mounted.

1 is a cross-sectional view briefly showing the structure of a general vehicle light guide device according to the prior art.

As shown in FIG. 1, a general vehicle light guide device includes a light source 10 emitting light having a range of light emission angles, and a total reflection part 20 totally reflecting light emitted from the light source 10. , The total reflection part 20 is generally configured such that two parallel first total reflection surfaces 21 and second total reflection surfaces 22 are formed in a case shape having an internal space.

A scattering point 30 is formed inside the total reflection part 20 to disperse the light as shown in FIG. 1, and light passing through the total reflection part 20 is dispersed through the scattering point 30 and is outside. It is configured to emit light.

That is, as illustrated in FIG. 1, light incident from the light source 10 to the total reflection part 20 is reflected through the first and second total reflection surfaces 21 and 22 of the total reflection part 20. Proceeds along the sand 20 and is dispersed through the dispersion point 30 and emits light in the direction perpendicular to the traveling direction.

In the conventional light guide device according to the related art, the light incident from the light source 10 to the total reflection part 20 passes through the first total reflection surface 21 according to the incident angle, so that the direct light of the light source 10 is transmitted to the outside. Light condensation occurs and thus there is a problem that the brightness of the lighting device is not uniform as contrasted with the light dispersed through the dispersion point (30). In addition, since it operates in a manner of emitting external light using the light dispersed through the dispersion point 30, the luminous efficiency of the light source 10 is lowered to satisfy the law that requires more than a certain illuminance to various lighting devices There is a problem that the use of is limited.

Therefore, the present invention has been invented to solve this problem, by forming all the light emitted from the light source is reflected through the total reflection portion to proceed in a constant direction, thereby preventing direct light of the light source and the resulting light condensation phenomenon and It is an object of the present invention to provide a vehicle light guide device having excellent luminous performance by improving the uniformity of brightness and exerting a light emitting effect according to the traveling direction of light incident from a light source.

The present invention, the light source having a light emitting angle (α) of a certain range to emit light; And a total reflection part 20 through which the light emitted from the light source 10 is totally reflected, wherein the total reflection part 20 has the light emitted from the light source 10 passing through the total reflection part 20 in the same direction. It provides a light guide device for a vehicle, characterized in that formed to be reflected.

According to the present invention, by forming all the light emitted from the light source is reflected through the total reflection portion to proceed in a single direction, the direct light of the light source and the resulting light condensation is prevented and the uniformity of the brightness of the light source is improved, According to the traveling direction of the light incident from the light source exhibits a light emitting effect has excellent light emitting performance.

The present invention, the light source having a light emitting angle (α) of a certain range to emit light; And a total reflection part 20 through which the light emitted from the light source 10 is totally reflected, wherein the total reflection part 20 has the light emitted from the light source 10 passing through the total reflection part 20 in the same direction. It provides a light guide device for a vehicle, characterized in that formed to be reflected.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

2 is a perspective view briefly and conceptually showing the structure of a vehicle light guide device according to an embodiment of the present invention, Figure 3 is a view for explaining the operation principle of the vehicle light guide device according to an embodiment of the present invention A conceptual diagram.

The vehicle light guide device according to an embodiment of the present invention totally reflects light emitted from the light source 10, for example, a light source 10, such as an LED, which emits light with a light emission angle α of a predetermined range. It is configured to include a total reflection portion 20, the total reflection portion 20 is generally configured to form two parallel first total reflection surface 21 and the second total reflection surface 22 in the form of the inner space formed. Could be.

In this case, the total reflection part 20 according to an embodiment of the present invention is formed so that the light emitted from the light source 10 passes through the total reflection part 20 and is reflected in one direction, as shown in FIGS. 2 and 3. Likewise, the first and second total reflection surfaces 21 and 22 may be formed to be inclined with respect to the light source 10 in parallel with each other, and the inclination may be formed to form an angle of 45 °.

According to this structure, the light guide device for a vehicle according to the exemplary embodiment of the present invention reflects light incident from the light source 10 to the total reflection part 20 through the first total reflection surface 21 and the second total reflection surface 22. After that, it proceeds in one direction. Therefore, unlike the prior art, the light emitting efficiency is further improved because the light emitting method operates in a method of directly reflecting through the total reflecting unit 20 instead of the distributed light emitting method by the scattering points mounted in the total reflecting unit 20.

On the other hand, according to an embodiment of the present invention, a separate coating layer 50 is additionally added to the outer surfaces of the first and second total reflection surfaces 21 and 22 on which the light incident from the light source 10 is reflected. Preferably, the coating layer 50 may be formed by a deposition treatment using the aluminum coating layer 50. Therefore, the total reflection efficiency is increased through the coating layer 50, so that the overall light emission efficiency is improved, and the light incident from the light source 10 by the coating layer 50 is applied to the first and second total reflection surfaces 21 and 22. Since light cannot be transmitted, light emitted from the light source 10 is not directly emitted to the outside, and external exposure of the light source 10 itself is prevented. Accordingly, unlike the prior art, the uniformity of brightness by the light source 10 may be well expressed to the outside.

In addition, in the vehicle light guide device according to an embodiment of the present invention, light emitted from the light source 10 is sequentially reflected through the first and second total reflection surfaces 21 and 22, and is incident from the light source 10. The first total reflection surface 21 to which the light is initially reflected is preferably arranged such that all light within the range of the emission angle α emitted from the light source 10 is reflected. That is, as shown in FIG. 3, two straight lines extending along the emission angle α at which light is emitted from the light source 10 intersect both ends of the first total reflection surface 21 or the first total reflection surface. It is formed so as to intersect the inner surface of the (21), so that all the light emitted from the light source 10 is reflected through the first total reflection surface 21, which is reflected back through the second total reflection surface 22 to face the outside It is preferred to be configured. Therefore, the light emitted from the light source 10 is prevented from being directly exposed to the outside without being reflected through the total reflection part 20, thereby preventing the direct light of the light source 10 and the resulting light condensation, thereby preventing the light source 10. Uniformity of brightness may be more fully improved.

On the other hand, the vehicle light guide device according to an embodiment of the present invention as shown in Figures 2 and 3 passage portion 40 so that the light is reflected in a predetermined direction through the total reflection portion 20 proceeds It may be formed in a manner that is connected to the end of the total reflection portion 20. Accordingly, the light guide device for a vehicle according to the exemplary embodiment of the present invention does not have the form of distributed light emission in a direction perpendicular to the light propagation direction, unlike in the prior art. It is a structure that operates in a form that emits light along the direction of reflection and progression.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

1 is a cross-sectional view schematically showing the structure of a general vehicle light guide device according to the prior art,

Figure 2 is a perspective view briefly conceptually showing the structure of a light guide device for a vehicle according to an embodiment of the present invention,

3 is a conceptual diagram illustrating an operation principle of a vehicle light guide device according to an embodiment of the present invention.

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

10: light source 20: total reflection part

40: passage portion 50: coating layer

Claims (6)

A light source 10 emitting a light having a light emission angle α of a predetermined range; And Total reflection part 20 through which the light emitted from the light source 10 is totally reflected Includes, the total reflection portion 20 is a light guide device for a vehicle, characterized in that the light emitted from the light source 10 is formed to pass through the total reflection portion 20 and reflected in the same direction. The method of claim 1, The total reflection part 20 is configured to include the first and second total reflection surface (21, 22), And the first and second total reflection surfaces (21, 22) are formed to be inclined with respect to the light source (10) in parallel to each other. The method of claim 2, The first and second total reflection surface (21, 22) is a light guide device for a vehicle, characterized in that formed to be inclined 45 ° with respect to the light source (10). The method of claim 2, Light emitted from the light source 10 is sequentially reflected through the first and second total reflection surfaces 21 and 22, and the first total reflection surface 21 emits light emitted from the light source 10. The light guide device for a vehicle, characterized in that arranged to reflect all the light within the α) range. The method according to any one of claims 1 to 4, The light guide device for a vehicle, characterized in that the coating layer (50) is formed on the outer surfaces of the first and second total reflection surface (21, 22). The method of claim 5, wherein Vehicle light guide device, characterized in that the passage portion 40 is formed so that the light reflected in the same direction through the total reflection portion 20 is connected to the end of the total reflection portion (20).
KR1020080086865A 2008-09-03 2008-09-03 Light guide for vehicle KR20100027805A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020080086865A KR20100027805A (en) 2008-09-03 2008-09-03 Light guide for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020080086865A KR20100027805A (en) 2008-09-03 2008-09-03 Light guide for vehicle

Publications (1)

Publication Number Publication Date
KR20100027805A true KR20100027805A (en) 2010-03-11

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130043494A (en) * 2011-10-20 2013-04-30 현대모비스 주식회사 Tail lamp apparatus for an automobile
KR20160088602A (en) * 2015-01-16 2016-07-26 엘지이노텍 주식회사 Lamp for vehicle
KR20190081960A (en) 2017-12-29 2019-07-09 에스엘 주식회사 Head lamp for vehicle
KR20190081925A (en) 2017-12-29 2019-07-09 에스엘 주식회사 Lamp for vehicle
KR20190081943A (en) 2017-12-29 2019-07-09 에스엘 주식회사 Lamp for vehicle
KR20190081919A (en) 2017-12-29 2019-07-09 에스엘 주식회사 Lamp for vehicle
DE102021105233A1 (en) 2020-04-03 2021-10-07 Varroc Lighting Systems, s.r.o. Module for forming a light beam, in particular in an exterior lighting system of a vehicle
KR20220067234A (en) * 2020-11-17 2022-05-24 유진에스엠알시오토모티브테크노 주식회사 lighting luminance for car with improvement homogeneity

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130043494A (en) * 2011-10-20 2013-04-30 현대모비스 주식회사 Tail lamp apparatus for an automobile
KR20160088602A (en) * 2015-01-16 2016-07-26 엘지이노텍 주식회사 Lamp for vehicle
KR20190081960A (en) 2017-12-29 2019-07-09 에스엘 주식회사 Head lamp for vehicle
KR20190081925A (en) 2017-12-29 2019-07-09 에스엘 주식회사 Lamp for vehicle
KR20190081943A (en) 2017-12-29 2019-07-09 에스엘 주식회사 Lamp for vehicle
KR20190081919A (en) 2017-12-29 2019-07-09 에스엘 주식회사 Lamp for vehicle
DE102021105233A1 (en) 2020-04-03 2021-10-07 Varroc Lighting Systems, s.r.o. Module for forming a light beam, in particular in an exterior lighting system of a vehicle
US11248771B2 (en) 2020-04-03 2022-02-15 Varroc Lighting Systems, s.r.o. Light beam forming module, especially in the vehicle external lighting system
KR20220067234A (en) * 2020-11-17 2022-05-24 유진에스엠알시오토모티브테크노 주식회사 lighting luminance for car with improvement homogeneity

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