JP2013035453A - Automobile exterior part, and automobile visor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automobile exterior part and an automobile visor, each of which makes light incident into a light guiding body savely and can obtain the sufficient amount of light for light emission from a light emission surface.SOLUTION: In the automobile exterior part 1, a contact surface 3 with a light emission body 5 in the light guiding body 2 is formed in a curved shape at an angle that is not vertical to the light emission surface 4, and an irradiation surface 6 of the light emission body 5 is closely attached to the contact surface 3. Thereby, the loss of light when being made incident is small, and most of light 20 is made incident into the light guiding body 2 and repeats the reflection thereof. As a result, the sufficient amount of light can be obtained in order to allow an ornament surface 8 emit light.

Description

  The present invention relates to an automobile exterior product and an automobile visor that emit light uniformly on a light emitting surface.

  2. Description of the Related Art Conventionally, a display device for displaying characters and symbols on a surface by providing a light source such as an LED lamp inside and emitting incident light and emitting incident light inside the light emitter is known for automobile exterior products ( Patent Document 1).

JP 2009-42420 A

  However, in the display device of Patent Document 1, since the incident light beam of the LED lamp is arranged parallel to the light emitting surface at one end of the light guide body, most of the incident light beam is reflected inside the light guide body. However, it is difficult to obtain sufficient light emission for displaying characters and symbols.

  SUMMARY OF THE INVENTION Accordingly, the present invention is to provide an automobile exterior product and an automobile visor that allow light to enter the light guide without waste and obtain a sufficient amount of light for light emission from the light emitting surface.

In order to achieve the above object, the invention according to claim 1 includes a light guide having a predetermined surface as a light emitting surface, and a light emitter in contact with the light guide, and the light guide from the light emitter. An automobile exterior product that causes light to enter the body and emit light from the light emitting surface,
A contact surface of the light guide with the light emitter is formed in a planar shape or a curved surface at an angle not orthogonal to the light emission surface, and the irradiation surface of the light emitter is closely attached to the contact surface. To do

  According to a second aspect of the present invention, in the automotive exterior product according to the first aspect, the contact surface is a concave curved surface, and the light emitter is a rod shape fitted to the concave curved surface. .

  According to a third aspect of the present invention, in the automobile exterior article according to the first aspect, the contact surface is an inclined plane that is inclined at a predetermined angle with respect to the light emitting surface, and the irradiation surface of the light emitter is the inclined surface. It is characterized by being a flat surface that is in close contact with the flat surface.

  According to a fourth aspect of the present invention, in the automobile exterior article according to any one of the first to third aspects, the light emitter is a rod-shaped body having a light source at least at one end portion and having a light guide property. It is characterized by.

  The invention according to claim 5 is the automobile exterior product according to any one of claims 1 to 4, wherein a cover having translucency is attached to at least a part of the light emitting surface. It is.

The invention according to claim 6 is an automotive visor,
Including a visor body having a light guide property with a predetermined surface as a light emitting surface, and a light emitter attached to the visor body,
The contact surface with the light emitter in the visor body is formed in a planar shape or a curved surface at an angle that is not orthogonal to the light emission surface, and the light emitter is mounted with the irradiation surface in close contact with the contact surface, Light is incident on the visor main body through the contact surface from the light emitter to emit light from the light emitting surface.

  According to the first to third aspects of the present invention, there is little light loss at the time of incidence, and most of the light is incident on the light guide body and repeats reflection, so that the amount of light is sufficient to cause the decorative surface to emit light. It is possible to obtain

  According to the invention described in claim 4, it is possible to uniformly enter and emit light throughout.

  According to the fifth aspect of the present invention, the outline of the decorative surface becomes clear, the light guide is prevented from being damaged, and light is prevented from leaking from the damaged part.

(A) is explanatory drawing which shows the whole structure of a motor vehicle exterior goods, (b) is explanatory drawing which shows a partial enlarged view. (A) is explanatory drawing which shows the AA cross section of a motor vehicle exterior goods, (b) (c) is explanatory drawing which shows the cross section of the example of a change of a motor vehicle exterior goods. It is explanatory drawing which shows the state which attached the motor vehicle exterior goods on the rear bumper. It is explanatory drawing which shows the example of a change of a motor vehicle exterior goods. (A) is explanatory drawing which shows the visor for motor vehicles, (b) is explanatory drawing which shows a BB cross section.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1A shows the overall configuration of the automobile exterior product 1, and FIG. 1B shows a partially enlarged view.
First, as shown in FIG. 1A, a car exterior product 1 according to the present invention includes a light guide 2 having a predetermined surface as a light emitting surface 4, and a light emitter 5 adjacent to the light guide 2. The light guide 2 and the light emitter 5 are provided on the light emitting surface 4 side of the light guide 2 so that light enters the light guide 2 from the light emitter 5 and emits light from the light emitting surface 4. A cover 7 for covering is provided.

  Among these, the light guide 2 is a horizontally long rectangular plate formed of a resin made of acrylic or polycarbonate having a thickness of 2.5 to 3.0 mm and a light transmittance of 80% or more. Then, as shown in FIG. 2A, the contact surface 3 with the light emitter 5 is formed in a curved surface at an angle that is not orthogonal to the light emitter 4, and the irradiation surface 6 of the light emitter 5 is in close contact with the contact surface 3. And bonded with an adhesive. Further, decorative surfaces 8, 8,... Are formed on a part of the light emitting surface 4 by performing a sandblasting process.

On the other hand, the light emitter 5 is formed in a rod shape that fits into the contact surface 3 formed in a concave curved surface, and is composed of a light source 10 and a light emitting rod 12 as shown in FIG. Among these, the light source 10 is an LED lamp, and the light emitting rod 12 is an acrylic resin optical fiber (Light String) having an outer diameter of 3.5 mm ± 0.2 mm manufactured by Sumitomo 3M Limited.
Then, after bonding with the irradiation surface 11 of the light source 10 in contact with the end surface 13 of the light emitting rod 12, the space from the light source 10 to the bonding location is covered with the coating material 14, and the length of the concave curved surface of the contact surface 3 The light emitting rod 12 is cut according to the above.

  The cover 7 is a metal plate (for example, a SUS material having a plate thickness of 0.5 mm) that is bent into a U-shaped cross section. And in order to reflect light, the inside is mirror-finished or colored white.

The process in which the light 20, 20,.
First, as shown in FIGS. 1 (a) and 1 (b), light 20, 20,... Then, the light 20, 20,... Enters the end surface 13 from the irradiation surface 11, proceeds while reflecting the inside of the light emitting rod 12, and the surface emits light.
As shown in FIG. 2A, the light 20, 20,... Traveling while reflecting the inside of the light emitting rod 12 emits radially, and the light guide is formed from the light emitting rod 12 through the contact surface 3. 2 is incident on the inside.
At this time, when the light 20, 20... Entering the light guide 2 from the light emitting rod 12 through the contact surface 3 reaches the surface (boundary surface) of the light guide 2 at a critical angle or less, the light guide The light travels outside without being reflected within the light guide 2, but travels within the light guide 2 while being reflected inside the cover 7.
On the other hand, when reaching the boundary surface at a critical angle or more, the light is totally reflected and travels inside the light guide 2. At this time, the light 20 that has reached the decorative surfaces 8, 8,... Of the light guide 2 is emitted by being transmitted to the outside. Here, the critical angle refers to the smallest incident angle at which light enters from a portion having a large refractive index to a portion having a small refractive index and total reflection occurs.

  For example, as shown in FIG. 3, the vehicle exterior article 1 configured as described above is formed and adhered as a rear bumper garnish 46 in accordance with the shape of the rear bumper 45 of the vehicle, and light is emitted from the decorative surface 8. If it does so, the design property behind a car will improve.

  Thus, according to the automobile exterior article 1 of the above-described form, the contact surface 3 of the light guide 2 with the light emitter 5 is formed in a curved surface at an angle that is not orthogonal to the light emitter 4, and the light emitter 5 is irradiated. By bringing the surface 6 into close contact with the contact surface 3, there is little loss of light at the time of incidence, and most of the light 20 is incident into the light guide 2 and is sufficiently reflected to cause the decorative surface 8 to emit light. It is possible to obtain a sufficient amount of light.

  In addition, when the light emitter 5 is provided with the light source 10 at least at one end thereof and is a rod-shaped body having light guide properties, it is possible to emit light uniformly throughout.

  And by attaching the cover 7 to the light emission surface 4, while the outline of the decoration surface 8 becomes clear, the trauma of the light guide 2 is prevented and the light 20 is prevented from leaking from a trauma location.

In addition, the structure of the automotive exterior product 1 of the present invention is not limited to the aspect of the above-described embodiment. The light guide is in close contact with the light emitter, and light passes from the irradiation surface of the light emitter through the contact surface. As long as it enters and reflects in the light guide, it can be changed as needed without departing from the spirit of the present invention.
For example, the contact surface 3 is a concave curved surface and the light emitter 5 is a rod that fits into the concave curved surface, so that there is little loss of light at the time of incidence, and a large amount of light 20 enters the light guide 2. As shown in FIG. 2B, the contact surface of the light guide 32 is an inclined plane 33 that is inclined at a predetermined angle from the light emitting surface 35, and the irradiation surface 31 of the light emitting body 30 is inclined. A flat surface closely contacting the flat surface 33 may be used.
In this case, when the light 36, 36... Incident from the irradiation surface 31 into the light guide 32 reaches the surface (boundary surface) of the light guide 32 at a critical angle or less, it is not reflected in the light guide 32. The light travels to the outside, but travels through the light guide 32 while being reflected inside the cover 34.
On the other hand, when reaching the boundary surface at a critical angle or more, the light is totally reflected and travels inside the light guide 32. At this time, the light 36 that has reached the decorative surfaces 8, 8,... Of the light guide 32 is transmitted to the outside to emit light.
As a result, there is little loss of light at the time of incidence, and a lot of light can be incident on the light emitter 30.

Further, as shown in FIG. 2C, a curved contact surface 43 may be formed on the bottom surface of the light guide 42, and the irradiation surface 41 of the rod-shaped light emitter 40 may be in close contact with the contact surface 43. .
Although not shown, the contact surface may be formed in a V-shaped concave surface, and the light emitting rod may be in close contact with the contact surface, and can be changed as appropriate.

The light guide 2 does not necessarily have a thickness of 2.5 to 3.0 mm, and may be 0.5 to 1.0 mm, and can be changed as appropriate.
In addition, a decorative surface 8, 8,... Is formed on a part of the light emitting surface 4 by performing a sandblasting process. However, the decorative surface 8, 8 is roughened by embossing or etching. .. may be formed.

  As shown in FIG. 4, the light emitter 5 may have a configuration in which the light sources 10 and 10 are provided at both ends of the light emitting rod 12, and can be changed as appropriate. Thereby, it is possible to emit light uniformly over the whole, and the display of the decorative surfaces 8, 8,.

Next, the configuration of the automobile exterior article 1 is not limited to the rear bumper 45 but may be used for, for example, the automobile visor 50 shown in FIG.
In this case, the automobile visor 50 includes a visor body 51 having a light guide property with a predetermined surface as a light emitting surface 57, and a light emitter 53 attached to the visor body 51.
Among these, the visor main body 51 is formed of a resin made of acrylic or polycarbonate, and as shown in FIG. 5B, the contact surface 52 with the light emitter 53 has a concave curved surface shape at an angle not orthogonal to the light emission surface 57. Is formed. On the other hand, the light emitter 53 includes a light source 55 and a light emitting rod 56.
Then, the light emitter 53 is attached in close contact with the contact surface 52, and light is incident from the light emitter 53 through the contact surface 52 into the visor body 51 and reflected, whereby the light emitting surface 57 emits light.
Thereby, there is little loss of light at the time of incidence, and since most of the light enters the visor body 51 and repeats reflection, it is possible to obtain a sufficient amount of light for causing the light emitting surface 57 to emit light.

  1 .... Automobile exterior products 2 .... Light guide 3 .... Contact surface 4 .... Light emitting surface 5 .... Light emitting body 6 .... Illumination surface 7 ... Cover 8 ... Decorative surface 10 ..Light source, 11 .... irradiation surface, 12 .... light emitting rod, 13 .... end face, 14 .... covering material, 20..light, 30..light emitter, 31..irradiation surface, 32..light guide Body, 33 .. inclined plane, 34 .. cover, 35 .. light emitting surface, 36 .. light, 40 .. light emitting body, 41 .. irradiation surface, 42 .. light guide, 43 .. contact surface, 45 ..Rear bumper, 46 ..Rear bumper, 50 ..Vehicle visor, 51 ..Visor body, 52 ..Contact surface, 53 ..Luminescent body, 53 ..Luminescent body, 54. -Light source, 56-Light emitting rod, 57-Light emitting surface.

Claims (6)

An automobile exterior product including a light guide body having a predetermined surface as a light emitting surface and a light emitter that contacts the light guide body, and causing light to enter the light guide body from the light emitter to emit light from the light emitting surface. There,
A contact surface of the light guide with the light emitter is formed in a planar shape or a curved surface at an angle not orthogonal to the light emission surface, and the irradiation surface of the light emitter is closely attached to the contact surface. Car exterior parts.   2. The automobile exterior product according to claim 1, wherein the contact surface is a concave curved surface, and the light emitter is shaped like a rod that fits into the concave curved surface.   The automobile exterior according to claim 1, wherein the contact surface is an inclined plane that is inclined at a predetermined angle with respect to the light emitting surface, and the irradiation surface of the light emitter is a flat surface that is in close contact with the inclined plane. Goods.   The automobile exterior article according to any one of claims 1 to 3, wherein the luminous body is a rod-shaped body that has a light source at least at one end portion and has a light guide property.   The automobile exterior product according to any one of claims 1 to 4, wherein a cover having translucency is attached to at least a part of the light emitting surface. An automotive visor,
Including a visor body having a light guide property with a predetermined surface as a light emitting surface, and a light emitter attached to the visor body,
The contact surface with the light emitter in the visor body is formed in a planar shape or a curved surface at an angle that is not orthogonal to the light emission surface, and the light emitter is mounted with the irradiation surface in close contact with the contact surface, An automobile visor, wherein light is incident on the visor body through the contact surface from the light emitter to emit light from the light emitting surface.

Images