JP2012127108A - Delineator light - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a delineator light that dispenses with much labor for maintenance by virtue of low manufacturing costs and that can form an irradiated area in a line.SOLUTION: A corrugated concave lens groove is formed on an inner surface; a lens 4 having an outer surface 7 formed flatly and smoothly is disposed ahead of LEDs 3...; and an irradiated area a, in which light generated by using the LEDs 3... as a light source is diffused in a line on a road surface by light refraction based on the Snell's law, is formed. Thus, a visual guidance effect particularly during accumulation of snow can be increased by forming the linear irradiated area a on a road shoulder by means of one delineator light 1. Additionally, the formation of a visual guidance line by the one delineator light 1 makes costs low and dispenses with much labor for maintenance.

Description

  In particular, the present invention relates to a line-of-sight guide lamp that effectively illuminates a road shoulder with snow to form a linear irradiation region.

  If there is snow on the road, the position of the shoulder cannot be determined especially when driving at night. In order to prevent this obstacle, a guide light is often installed on the shoulder of the road.

  For example, the line-of-sight guide light described in Japanese Patent Application Laid-Open No. 2010-174530 is an example of this, and an example in which a guide light having a high-intensity LED as a light source is attached downward to a pole standing on the road shoulder to illuminate the road shoulder. It is.

  However, in the case of this publicly known example, since the irradiation region is circular or has a contour shape close to this on the road shoulder, the light may be reflected on the snow surface, particularly when there is snow, and the visual recognition effect may be weakened.

  Japanese Patent Application Laid-Open No. 2001-40625 introduces a road marking device that enables line marking by arranging a plurality of light emitting units at different angles in order to illuminate the road surface to be line light. Has been.

JP 2010-174530 A JP 2001-40625 A

  However, in the case of the road marking device disclosed in Japanese Patent Laid-Open No. 2001-40625, not only is it costly to use a plurality of light emitting units, but also the angle of the light emitting unit is adjusted according to the terrain of the installation location. It is necessary to adjust, and it takes time and effort to install.

  Also, especially in areas with a lot of snow, strong winds such as so-called snowstorms are often blown out, so the mounting angle of the light emitting part is upset by the wind pressure, and the line is cut halfway and the direction does not come out It is necessary to carry out adjustment and maintenance.

  An object of the present invention is to provide a line-of-sight guide lamp that is low in production cost, does not require labor for maintenance, and has a high line-of-sight guidance effect.

  The configuration of the present invention that achieves the above object is as follows.

  First, the invention according to claim 1 is based on Snell's law on the road shoulder in the line-of-sight guide lamp by arranging a lens having a corrugated refracting surface on the inner surface and a smooth outer surface on the front side of the light source. The irradiation area diffused in a line shape by light refraction can be formed.

  A line-of-sight guide lamp according to claim 2 is characterized in that, in the invention according to claim 1, one or a plurality of LEDs are used for the light source.

  The line-of-sight guide lamp according to claim 3 is the invention according to claim 1 or 2, wherein the line-of-sight guide lamp is used to illuminate a road shoulder, a center line, or a road surface marker with a linear irradiation region. It is characterized by this.

  According to the present invention, the light emitted from the light source is diffused in the direction orthogonal to the linear direction of the corrugated valley by the action of the corrugated refracting surface of the lens to form a belt-shaped irradiation area on the road surface. Can do.

  Moreover, since a single irradiation lamp can form a linear irradiation region, the installation cost can be reduced.

  In addition, unlike the known example in which the mounting angle of a plurality of guide lights is adjusted and the line is marked as in the known example, it does not require the maintenance work of adjusting the angle that is distorted by strong winds or the like.

Sectional drawing of the gaze guidance lamp which concerns on this invention. The front view of the gaze guidance lamp which concerns on this invention. Explanatory drawing of a lens. Explanatory drawing of the state which installed the gaze guidance lamp on the road. Explanatory drawing of the refractive action in a lens. (A) is explanatory drawing of the irradiation area | region formed by refracting and diffusing in the shape of a line by the waveform curved surface, (B) is explanatory drawing of the irradiation area | region formed in the width direction.

  An embodiment of the present invention will be described in detail with reference to FIGS.

  1 is a cross-sectional view illustrating the internal structure of a visual guide light according to the present invention, FIG. 2 is a front view of the visual guide light, FIG. 3 is a perspective view illustrating the shape of a lens, and FIG. 4 is a schematic view of the visual guide light according to the present invention. FIGS. 5A and 5B are explanatory diagrams of a state of being installed on the shoulder of a road, FIGS. 5A and 5B are explanatory diagrams of Snell's law. FIGS.

  In each figure, reference numeral 1 denotes a line-of-sight guide lamp. This line-of-sight guide lamp 1 includes a plurality of high-intensity light-emitting diodes (hereinafter referred to as “LEDs”) 3. In the example, 8 are built in downward, and a flat lens 4 is attached in front of the LEDs 3. In addition, there is no limit condition in the number and arrangement | sequence of LED3 ..., It can design arbitrarily by the place, the objective, etc. to install.

  The lens 4 is formed on the surface of the inner surface 4a (LED3... Side) so that light from the LEDs 3... Can be diffused in a line shape based on Snell's law to form an irradiation region on the road surface. 3, a corrugated refracting surface 5 in which concave lens grooves 6 are formed in parallel at the same pitch is formed, and an outer surface 7 is a smooth surface, which is made of a transparent acrylic resin in this embodiment, but is made of glass. The product can also be used.

  Reference numeral 8 denotes a gable-shaped snow roof formed above the case 2, and the snow can fall without being piled up by the action of the gable-shaped sloped roof to prevent snow damage.

  Reference numeral 9 denotes a mounting bracket, which allows the line-of-sight guide lamp 1 to be mounted downward on the pole 10 as shown in FIG.

  In FIG. 4, 11 is an AC power source, 12 is a solar cell, 13 is an arrow blade, 14 is a road surface, 15 is a road shoulder, 16 is a road shoulder display line, and 17 is snow cover.

  Next, the optical action of the lens 4 will be described with reference to FIGS.

  5 and 6, a is an irradiation area formed in a line by the lens 4, and the irradiation area a is such that light incident on the lens 4 is as shown in FIGS. 5 and 6A. A region in the length (L) direction is formed by Snell's law when the light is refracted by the concave lens groove 6 and emitted from the outer surface 7.

  On the other hand, the incident light parallel to the groove direction of the concave lens groove 6 is emitted downward without being largely refracted as shown in FIG. 5 and FIG. 6B, and in the irradiation region a in the width (W) direction. The region is formed.

  The incident light that intersects at right angles to the direction of the concave lens groove 6 formed in a wave shape in this way is incident angle of light incident on one concave lens groove 6 as shown in the sectional view of FIG. Produces a wide range of refraction angles. On the other hand, incident light parallel to the direction of the concave lens groove 6 is emitted downward without being largely refracted as shown in the sectional view of FIG.

  The size of the light emitted linearly can be arbitrarily changed by changing the size of the curvature of the concave lens groove 6, and a plurality of light beams can be arranged in the direction of the concave lens groove 6. By arranging the light source (LED 3...), The width of the light can be arbitrarily changed. Furthermore, by changing the distance between the light source (LED 3...) And the incident surface and changing the incident angle incident on the concave lens groove 6, the light is emitted as a thin and short line in the case of a short distance, and in the case of a long distance. Thick and long irradiation is obtained.

  The line-of-sight guide lamp 1 described above is most effective for illuminating the road shoulder 15 in a line shape on a rural road with a lot of snow. It is also effective when illuminating a traffic sign drawn on a line or road surface in a line.

1 Gaze guidance light 2 Case 3 LED
4 Lens 5 Waveform lens surface 6 Concave lens groove 7 Outer surface 8 Snow roof 9 Mounting bracket 10 Pole 11 AC power source 12 Solar cell 13 Arrow blade 14 Road surface 15 Road shoulder 16 Road shoulder display line 17 Snow cover a Irradiation area

Claims (3)

  Line-of-sight guidance that forms an irradiation area diffused in a line by refraction of light based on Snell's law on the road shoulder by arranging a lens with a corrugated refracting surface on the inner surface and a smooth outer surface on the front of the light source light.   The line-of-sight guide lamp according to claim 1, wherein one or more LEDs are used as the light source. The line-of-sight guide lamp according to claim 1 or 2, wherein the line-of-sight guide lamp is used for illuminating a road shoulder, a center line, or a road surface marker with a linear irradiation region.

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