JPH04215540A - Luminous position display device - Google Patents

Abstract

PURPOSE:To provide a luminous position display device which has the large attention arousing property in day and at night and has a good appearance and has the simple structure and can be mounted on a vehicle easily because the external light such as environmental light or the lighting equipment, etc., of a facility, as light source. CONSTITUTION:A luminous position display lamp uses the light generated from the edge surface of a fibrous transparent member which possesses the light transmission performance, as index.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a luminescent position indicator lamp that is aesthetically pleasing and uses a fibrous transparent material that has light transmission properties, and more specifically, it relates to a fibrous transparent material that has light transmission properties. This invention relates to a luminescent position indicator lamp which uses the end face of the lamp as a point light source and takes advantage of its large attention-grabbing power, and is both effective and aesthetically pleasing. More specifically, the present invention relates to a luminescent position indicator lamp that uses ambient light or external light from existing lighting equipment as a light source, can be easily mounted on a vehicle, has a large attention-grabbing ability, and is aesthetically pleasing.

0002

[Prior Art] Generally used luminescent position indicator lights include ones made of transparent plastic with no light transmission properties that have been added with fluorescent dyes, and ones that use light bulbs or LEDs to increase their ability to attract attention. has been done. The former mainly uses color effects and is effective when the entire surrounding area is bright, but the effect is poor at night, and the self-luminosity is extremely weak and it is difficult to use it as a point light source, which raises the issue of caution. There are limits to power. The latter is self-luminous and can be easily used as a point light source, so it has a great ability to attract attention. However, when the entire surrounding area is bright, the effect is weakened and the overall structure of the device becomes complicated. especially,
These problems are noticeable in fender markers, fender poles, etc. mounted on vehicles.

0003

[Problems to be Solved by the Invention] The present invention has a great ability to attract attention regardless of day or night, has an aesthetic appearance, and can be easily installed in a vehicle by using ambient light or external light such as existing lighting equipment as a light source. It is an object of the present invention to provide a luminescent position indicator light with a simple structure.

0004

[Means for Solving the Problems] Therefore, the present inventors aimed to solve the above problems, and as a result of intensive studies, the present inventors determined that the light emitted from the end face of a fibrous transparent material having optical transmission properties is the main indicator. The present inventors have discovered that a luminescent position indicator lamp that does this is a luminescent position indicator lamp that is significantly superior to conventional luminescent position indicator lamps, and has arrived at the present invention.

[0005] The present invention will be explained in detail below.

[0006] In the present invention, the fibrous transparent material having optical transmission properties refers to inorganic materials such as multi-component glass and quartz glass, or polymethyl methacrylate resin, polystyrene resin, polycarbonate resin, poly-4-methyl It is a fibrous material mainly composed of a polymeric organic material such as pentene-1 resin, and when placed in the air, its refractive index is higher than that of air and its light transmittance is high. , which has the function of transmitting a portion of the light incident from the end surface to the opposite end surface while repeatedly reflecting at the interface between the material and the air. Therefore, it is preferable to use a material mainly having a refractive index of 1.15 or more, more preferably a material mainly having a refractive index of 1.35 or more. Among these, plastic materials are particularly preferred because of their workability, flexibility, and freedom in design.

[0007] Furthermore, in order to improve the efficiency of reflection at the interface and achieve good light transmission, it is preferable to use a material with a smooth interface. Optical fibers having a multilayer structure in which the optical fiber (part) is coated with a transparent material (cladding part) having a lower refractive index, particularly those known as step index type (hereinafter referred to as SI type) optical fibers, are preferred because they have excellent optical transmission properties. In addition, fiber-like materials that have a structure in which the refractive index decreases sequentially from the center to the outer periphery, especially those known as grating index type (hereinafter referred to as GI type) optical fibers, also have optical transmission characteristics. Excellent and desirable.

[0008] The term fibrous as used herein refers to a cylindrical, prismatic, cylindrical, or prismatic cylindrical material in which the ratio of cross-sectional area to lateral area is at least 1:20 or more. By satisfying this condition,
The contrast of the light emitted from the side and end faces is visually clear, and the light-emitting position indicator light has the ability to attract attention. Although there is no particular restriction on the outer diameter of the fiber, a diameter of about 0.1 to 4 mm is usually used. Although a single fibrous transparent material can be effective, especially when using a thin material, it is preferable to use a plurality of fibrous transparent materials in a bundle, which can bring about a great effect in confirming the position and the like.

[0009]Although the fibrous transparent material alone may be used as a luminescent position indicator light, it is preferable to cover at least a portion of the periphery of the fibrous transparent material with a transparent support for reinforcement. . As the transparent support, known materials can be used, such as polymethacrylate resin.

In the present invention, there is no particular restriction on the shape of the end surface of the fibrous transparent material having light transmitting properties, which emits light and serves as an index. In the case of a fibrous transparent material, an obliquely cut oval cross section is preferable. In addition, the ability to attract attention can be generated more effectively by bending a cylindrical fibrous transparent material by 90 degrees and using the end face of a perfect circle as an index, or by adding a means for bringing a lens or the like into contact with the end face. You can also do that. Further, the end face may cover a colored filter or the like, and any color can be selected, and in this case, a particularly aesthetic effect can be obtained.

[0011] Further, the end face serving as the index and the other end face opposite thereto do not need to be particularly treated and may be cut surfaces, but for example, a reflecting plate may be added thereto. When a fluorescent substance is added or attached to a fibrous transparent material that has light transmission properties, visible light is emitted from the end face of the fibrous transparent material due to the action of the added fluorescent substance, making it suitable for use as a luminescent position indicator light. The ability to attract attention is enhanced, and furthermore, a unique aesthetic effect can be obtained. Note that when the fibrous transparent material has a multilayer structure, a fluorescent substance may be attached or added to at least one arbitrary layer. The fluorescent substance used in the present invention is not particularly limited as long as it is excited by light of a specific wavelength and converted to a wavelength in the visible range, and any known organic or inorganic fluorescent substance can be used, and commercially available fluorescent substances can be used. You can arbitrarily choose from.

Specifically, a fluorescent substance that converts visible light of 400 to 800 nm is preferable. For example, POPOP (p-di-(5-phenyl-2
-oxazolyl)benzene), 425 nm PMP (1
-phenyl-3-mesityl-2-pyrazoline), 445
nm of TPB (1,1,4,4-tetraphenyl-1,
3-butadiene), 450 nm DPH (1,6-diphenyl-1,3,5-hexatoluene), 480 nm BBQ (benzimidazobenzisothinolin-7-one), 510 nm 3HF (3-hydroxyflavone). ) or L of 413 nm (absorption center wavelength 378 nm)
umogen F Violet 570 (
Naphtalimid series, BASF product name), 49
Lumogen of 0nm (absorption center wavelength 476nm)
Yellow 083 (Perylen series, BAS
Company F product name), 539 nm (absorption center wavelength 524 nm)
Lumogen Orange 240 (Per
ylen series, BASF company product name), 613 nm (absorption center wavelength 578 nm) Lumogen Red
300 (Perylen series, BASF product name), W
Hite Fluoro PSR (manufactured by Sumitomo Chemical Co., Ltd.)
, White Fluoro PMR (manufactured by Sumitomo Chemical Co., Ltd.), White Fluoro B (manufactured by Sumitomo Chemical Co., Ltd.), White Fluoro PCN (manufactured by Sumitomo Chemical Co., Ltd.), and the like. The fluorescent substances may be used alone or in combination of two or more. In particular, when such a fluorescent substance is used, a fibrous transparent material with light transmission properties that is mainly made of polystyrene-based resin may be affected by the transmittance of colored light caused by the fluorescent substance and/or the uniform dispersion of the fluorescent substance. It is preferably used because of its excellent luminescence and brightness.

Furthermore, by emitting visible light from the added or attached fluorescent material from the end face of the fibrous transparent material, the structure of the device is significantly simplified compared to conventional luminescent position indicator lights. It can be effective. In other words, the light emitted from the end face of a fibrous transparent material with light transmitting properties to which no fluorescent substance is added or attached is the light that enters from the other end face, generally from a light source installed for that purpose. However, since fluorescent materials emit visible light depending on the light from the surrounding environment, it is not essential to install a light source near the other end surface. For example, in order to make the end face of a fibrous transparent material with light transmitting properties without added or attached fluorescent substances emit light to the extent that it can be effectively used as a position indicator light outdoors during the day, a high-intensity light source is required. , when a fluorescent substance is added or attached,
Since light can be received from the sides having a wide area, the stronger the surrounding light, the stronger the light will be emitted without the need to install a special light source.

The luminescent position indicator lamp obtained by the present invention can be used effectively in any of ordinary outdoor installations, indoor installations, and mobile applications such as surveying.
In particular, when mounted on a vehicle and using the light emitted from its end face as an indicator light to display information to the driver etc., an extremely large effect can be obtained compared to conventional indicator lights. Furthermore, since a vehicle is equipped with many lighting devices, it is possible to use external light as a light source at night, and to use those already installed in the vehicle, thereby simplifying the device. Examples of things that can be used as external light sources for the vehicle include headlights, direction indicator lights, side lights, tail lights, fog lights, brake lights, and the like.

[0015] Furthermore, the fender end on the opposite side of the driver's seat is prone to installation damage when the vehicle curves or approaches the width.
In order to prevent this, by installing the luminescent position indicator lamp of the present invention in the relevant part, it is possible to extremely effectively and accurately alert the driver, and prevent contact damage. Since it is easy to use the existing lighting equipment around the headlights as a light source, the effects of the present invention can be fully exhibited. Indicator lights used in such parts are generally called fender balls, corner poles, etc. In particular, when using a fibrous transparent material with light transmission properties to which fluorescent substances are added or attached, it emits light during the day using sunlight as the light source, and at night using the headlights and surrounding lighting equipment as the light source. Therefore, the effect is great.

[0016]

EXAMPLES Next, the present invention will be explained based on examples.

The optical fibers used as the fibrous transparent material having light transmission properties in the examples are listed below.

(11) Fluorescent dye-added plastic optical fiber (green)
Product name: “Optektron F201” Japan Petrochemical Co., Ltd.
Structure = SI type plastic optical fiber Core part = polystyrene, refractive index 1.59 Clad part = polyvinyl acetate system, refractive index 1.42 Excitation light wavelength 400-460 nm, emission wavelength 495-550 nm Outer diameter 2.0 mm

(12) Fluorescent dye-added plastic optical fiber (red)
Product name: “Optectron F202” Japan Petrochemical Co., Ltd.
Structure = SI type plastic optical fiber Core part = polystyrene, refractive index 1.59 Clad part = polyvinyl acetate system, refractive index 1.42 Excitation light wavelength 515-590 nm, emission wavelength 630-680 nm Outer diameter 2.0 mm

(13) Fluorescent dye-added plastic optical fiber (orange)
Product name: “Optectron F204” Japan Petrochemical Co., Ltd.
Structure = SI type plastic optical fiber Core part = polystyrene, refractive index 1.59 Clad part = polyvinyl acetate system, refractive index 1.42 Excitation wavelength light 515-540 nm, emission wavelength 575-640 nm Outer diameter 2.0 mm

(14) Plastic optical fiber product name “Optektron ESQ-1000” manufactured by Japan Petrochemical Corporation Structure = SI type plastic optical fiber Core part = Polymethyl methacrylate, refractive index 1.492 Clad part = Fluorine polymer, refraction Rate 1.406 Transmission loss 300
dB/Km or less (measured at 575 nm with a diameter of 1 mm) Outer diameter 2.0 mm

Example 1 The above-mentioned optical fiber 11 was used as a fibrous transparent material having light transmission properties, and a transparent support 2 made of polymethacrylate resin was used to cover the surrounding area, and a pedestal 3 was provided below. A luminescent position indicator light 10 as shown in FIGS. 1 and 2 with a length of approximately 20 cm and a diameter of 1 cm was prepared. When this was observed outdoors in the daytime at a distance of about 5 m, the end face 11a of the optical fiber at the tip was brightly emitted, and had an excellent ability to attract attention.

Example 2 The above-mentioned optical fibers 11 and 14 were connected and used, and the surroundings were covered with a transparent support 2 made of polymethacrylate resin in the same manner as in Example 1, and a pedestal 3 was provided below. A luminescent position indicator light 10 as shown in FIG. 3 with a length of approximately 20 cm and a diameter of 1 cm was prepared. When the same observation as in Example 1 was performed, it was found that it had excellent properties as in Example 1.

Example 3 Optical fibers 11, 12, and 13 are arranged in parallel, and their surroundings are covered with a transparent support 2 made of polymethacrylate resin and a colored support 4 made of the same resin, and a pedestal 2 is placed below them. A luminescent position indicator light as shown in Figure 4 was created. When the same observation as in Example 1 was performed, it was found that it had the same excellent properties as in Example 1, and was also beautiful in appearance.

Example 4 A luminescent position indicator light 10 as shown in FIGS. 5 and 6 was produced, which was composed of an optical fiber 11, a transparent support 2, a pedestal 3, and a vehicle mounting jig 5. This is characterized in that the position of the optical fiber is shifted from the center of the transparent body support 2, so that the end face 11a and the side surface of the optical fiber 11 can be more easily seen than in Example 2.

FIG. 7 shows a case where this luminescent position indicator lamp is mounted on a vehicle.

Example 5 Optical fiber 14, transparent support 2, pedestal 3, colored support 4, vehicle mounting jig 5, suction cup 6, color filter 7
, a luminescent position indicator light 10 composed of a protective coating layer 8 was created (FIG. 8). The optical fiber 14 is attached to the transparent support 2
, passes through the pedestal 3 and the protective coating layer 8, and the end face opposite to the indicator is covered with a color filter 7.

FIG. 9 shows a vehicle equipped with this luminescent position indicator light. Attach the suction cup 6 to the headlight surface,
Since the headlight light source is received from the other end surface, the end surface 14
It was observed that the light emitted was stronger than c, and it was confirmed that the visibility was excellent.

Example 6 FIG. 10 shows an example in which the end face of the optical fiber 11 is bent and placed on the transparent support 2. It was confirmed that the end face 11c was easily recognized and had excellent visibility.

Example 7 FIG. 11 shows an example in which an optical fiber 11 is embedded in a transparent support 2 and a notch 9 is provided.

[0031]

[Effects of the Invention] By using a fibrous transparent material having optical transmission properties according to the present invention, a simplified structure that has a greater ability to attract attention both day and night than the conventional technology and has an aesthetic appearance. We were able to obtain a luminescent position indicator light. Further, by using ambient light or external light from existing lighting equipment as a light source, it can be easily mounted on a vehicle, and the above effects can be fully exhibited.

[Brief explanation of the drawing]

FIG. 1 shows a perspective view of a first example of a luminescent position indicator lamp of the present invention.

FIG. 2 shows a cross-sectional view of the tip of FIG. 1;

FIG. 3 shows a perspective view of a second example of the luminescent position indicator lamp of the present invention.

FIG. 4 shows a perspective view of a third example of the luminescent position indicator light of the present invention.

FIG. 5 shows a perspective view of a fourth example of the luminescent position indicator lamp of the present invention.

FIG. 6 shows a cross-sectional view of the tip of FIG. 5;

FIG. 7 shows a cross-sectional view of the luminescent position indicator light of FIG. 5 mounted on a vehicle.

FIG. 8 shows a perspective view of a fifth example of the luminescent position indicator lamp of the present invention.

FIG. 9 shows a cross-sectional view of the luminescent position indicator light of FIG. 8 mounted on a vehicle.

FIG. 10 shows a sectional view of a sixth example of the luminescent position indicator lamp of the present invention.

FIG. 11 shows a cross-sectional view of a seventh example of the luminescent position indicator lamp of the present invention.

[Explanation of symbols]

11, 12, 13, 14 Optical fiber 11a, 12
a, 13a, 14a Optical fiber end face 2 Transparent support 3 Pedestal 4 Colored support 5 Vehicle mounting jig 6 Suction cup 7 Color filter 8 Protective coating layer 9 Notch 10 Luminescent position indicator light

Claims (8)

[Claims] 1. A luminescent position indicator lamp whose main indicator is light emitted from the end face of a fibrous transparent material having light transmission properties. 2. The fibrous transparent material having optical transmission properties has inside and/or on its surface a fluorescent substance that is excited by light of a specific wavelength and emits light of a wavelength in the visible region. Luminous position indicator light. 3. The fibrous transparent material having optical transmission properties has a property of receiving external light and emitting light with a wavelength in the visible range generated by the action of the fluorescent substance from the end face. Luminous position indicator light. 4. The luminescent position indicator lamp according to claim 1, wherein the fibrous transparent material having light transmission properties includes plastic. 5. The luminescent position indicator lamp according to claim 1, wherein at least a portion of the periphery of the fibrous transparent material is covered with a transparent support. 6. The luminescent position indicator lamp according to claim 1, which is mounted on a vehicle and indicates the position of the mounted part. 7. The luminescent position indicator lamp according to claim 5, wherein a light source already installed in the vehicle is used as a light source of a light emitting end surface which is a main indicator of the fibrous transparent material having light transmitting properties. 8. The luminescent position indicator lamp according to claim 7, wherein the luminescent position indicator lamp is mounted at the front or front end of the vehicle, and uses a headlight already installed at the front or lighting equipment around it as a light source.