JP2005146566A - Double-sided light-emitting delineator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a double-sided light-emitting delineator which has a simple structure and which can be inexpensively manufactured. <P>SOLUTION: This double-sided light-emitting delineator is equipped with: two light guide plates 1 wherein dot patters for diffusing incident light are each formed on one-side surfaces; a reflecting sheet 4 which is sandwiched between the two light guide plates 1 in the state of making the dot pattern-formed surfaces face each other; a semitranslucent light guide plate cover 2 for fixing each of the light guide plates 1 and the reflecting sheet 4 to the inside in the state of exposing a part of each of the light guide plates 1 to the outside from an opening; an LED lamp unit 5 wherein a plurality of LED lamps are arranged in a line so as to make light incident onto the two light guide plates 1 in upper positions, and which is built in the cover 2 so that the reflecting sheet 4 can exist directly above each of the LED lamps; and a control substrate 6 for supplying electricity from a power source to each of the LED lamps of the unit 5. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a line-of-sight guide sign installed on, for example, a road shoulder or a median strip, and more particularly to a double-sided light-emitting line-of-sight sign that emits light from both sides of the sign.

Conventionally, as a line-of-sight guidance sign installed on, for example, a road shoulder or a median strip, there is a structure described in the following prior art document. In the line-of-sight guidance sign described in this prior art document, a large number of light emitters (for example, LED elements) are arranged in a plane on the surface to emit light in order to emit the sign in a plane. And by making each light-emitting body emit light, the marker emits light in a planar shape, and as a result, visibility is improved.
Japanese Patent Laid-Open No. 9-31928

  However, the line-of-sight label having the above-described configuration requires a large number of light emitters because of its structure, resulting in an extremely high manufacturing cost. Therefore, for example, for the purpose of installing in the median strip, double-sided light-emitting gaze guidance that requires both sides of the sign to emit light in order to improve visibility not only to the driver of the traveling vehicle but also to the driver of the oncoming vehicle If the above prior art is applied to the label, a large number of light emitters must be arranged on both sides, which further increases the cost.

  In addition, when a large number of light emitters are used on both sides of the sign, the internal structure of the sign becomes complicated, resulting in inconvenience that maintenance of the line-of-sight guide sign becomes complicated.

  Accordingly, an object of the present invention is to provide a double-sided light emitting line-of-sight guidance sign that can emit light on both sides of the sign, has a simple structure, and can be manufactured at low cost.

  In order to achieve the above object, the double-sided luminous line-of-sight guidance sign of the present invention has two light guide plates each having a dot pattern for diffusing incident light on one side, and this dot pattern is formed. A reflection sheet sandwiched between two light guide plates with the surfaces facing each other, and the two light guide plates and the reflection sheet inside with a part of the light guide plate exposed to the outside from the opening A plurality of LED lamps are arranged in a row so that light is incident on the milky white light guide plate cover fixed to the two and the two light guide plates positioned above, and the reflective sheet exists directly above each LED lamp. An LED lamp unit built in the light guide plate cover and a control board for supplying electricity from a power source to each LED lamp of the LED lamp unit.

  Further, in the double-sided light emitting line-of-sight sign according to the present invention, the dot pattern formed on the light guide plate is a gradation pattern in which the dot diameter gradually increases as the distance from the light incident side from the LED lamp increases. It is good to be.

  According to the double-sided light emitting gaze guidance sign of the present invention, both sides of the sign emit light. Therefore, even when the double-sided light emitting gaze guidance sign is installed, for example, in the central separation zone, not only the driver of the traveling vehicle but also the driving of the oncoming vehicle Visibility can be improved even for a person. In addition, since this double-sided luminous line-of-sight guide sign has a simple structure, it has the advantage that it can be manufactured at low cost and can be easily maintained.

  Hereinafter, an embodiment of the double-sided light emitting line-of-sight guidance sign of the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is a front view of a double-sided luminous line-of-sight guidance sign of the present invention, and FIG. 2 is a diagram showing an internal structure. FIG. 3 is a cross-sectional view of the double-sided light emitting gaze guidance sign of the present invention as seen from the side. In addition, when the double-sided light emission gaze guidance sign of this invention is seen from the back, it has the same external appearance as FIG.

  The double-sided luminous line-of-sight guide sign of the present embodiment includes two light guide plates 1 having a semicircular shape, a light guide plate cover 2 having a circular opening for exposing a part of the light guide plate 1 to the outside, And a cylindrical battery housing holder 3 attached to the lower part of the light guide plate cover 2. In the present embodiment, the opening is circular, but the shape of the opening can be arbitrarily set.

  Each light guide plate 1 is made of acrylic resin or the like, and a dot pattern for diffusing light incident on the inside of the light guide plate from an LED lamp 5a described later is formed on one surface thereof. The two light guide plates 1 are fixed by the light guide plate cover 2 with the reflection sheet 4 sandwiched between them as shown in FIG. 2 with the surface on which the dot pattern is formed facing each other. Yes. In addition, when sandwiching the reflection sheet 4, two reflection sheets 4 are prepared, and the surface on the front side of each reflection sheet 4 is opposed to the surface on which the dot pattern of each light guide plate 1 is formed. Needless to say, it may be sandwiched.

  The dot pattern of the light guide plate 1 is such that the dot diameter is set smaller on the side where light enters from the LED lamp 5a (lower side in FIG. 2), and the dot diameter gradually increases toward the upper side. The gradation pattern is like this.

  Further, in the light guide plate cover 2, an LED lamp unit 5 in which a plurality of LED lamps 5 a are arranged in a row so that light enters the light guide plate 1 is incorporated in a lower portion of the light guide plate 1 fitted. Yes. Here, the LED lamp unit 5 is built in such a manner that the reflection sheet 4 is positioned immediately above each LED lamp 5 a and the LED lamps 5 a are arranged in parallel with the reflection sheet 4. Thus, the light incident on each light guide plate 1 from each LED lamp 5a travels inside each light guide plate 1 while being reflected on both surfaces of the reflection sheet 4 respectively.

  Further, a control board 6 for supplying electricity from the power source to each LED lamp 5a of the LED lamp unit 5 is connected downward to the LED lamp unit 5, and the lower part of the control board 6 is The battery receiving bracket 3b provided on the upper part of the battery storage holder 3 is connected. Each LED lamp 5a of the LED lamp unit 5 can be electrically connected to the battery 3a stored in the battery storage holder 3 through the battery receiving bracket 3b and the control board 6. Yes.

  Specifically, for example, the battery storage holder 3 is configured to be rotatable about an axis with respect to the light guide plate cover 2, and the internal battery 3 a is received by rotating the battery storage holder 3 in one direction. An electrical connection is realized by contacting the metal fitting 3b, and the built-in battery 3a is separated from the battery receiving metal fitting 3b by rotating in the opposite direction so that the electric connection is released.

  Furthermore, in this embodiment, a cds light receiving unit (not shown) is provided at an arbitrary position of the light guide plate cover 2 as shown in FIGS. 1 and 3, and the control board is based on the detection result of the cds light receiving unit. 6 is configured to control the electrical connection between the battery 3 a and the LED lamp unit 5.

  Here, in order to prevent light from escaping from the side edge of the light guide plate, it is common to attach a reflective sheet with an adhesive around the side edge of the light guide plate. When the agent is used, the light from the LED lamp is absorbed by the adhesive, so that the intensity of the light on the light emitting surface of the marker is lowered and sufficient visibility may not be realized. However, according to the configuration of the present embodiment, by fixing the light guide plate 1 with the light guide plate cover 2 in a state where the reflection sheet is in contact with the periphery of the side edge of each light guide plate 1, Since the reflection sheet can also be fixed, the effect of not being affected by the adhesive can be obtained.

  In addition, in this case, the light guide plate cover 2 of the present embodiment can avoid absorption of light into the adhesive by using a milky white resin such as vinyl chloride or ABS resin. Even if the sheet is not arranged around the side edge of each light guide plate 1, it is possible to achieve the effect that the light intensity can be ensured so that the driver can visually recognize the light. In addition, since the light reaching the side edge can be reflected back to the inside of the light guide plate without absorbing light, the surface light emission of the light guide plate exposed from the opening from the driver, that is, a circular surface Light emission can be visually recognized.

  As described above, the double-sided light-emitting line-of-sight guide sign of the present invention is configured. However, the double-sided light-emitting line-of-sight guide sign of the above configuration realizes double-sided light emission as follows.

  First, when the battery 3a and the LED lamp unit 5 are electrically connected via the battery holder 3b and the control board 6, and each LED lamp 5a of the LED lamp unit 5 emits light, the light from each LED lamp 5a The light enters the light guide plate 1. Then, the light incident on each light guide plate 1 is diffused inside the light guide plate due to the influence of the reflection sheet 4 and the dot pattern of each light guide plate 1 and the effect of the milky white light guide plate cover 2. Light is emitted from the exposed surface toward the outside of the sign. In this way, in the double-sided light emitting gaze guidance sign of the present embodiment, it is possible to emit light on both sides of the sign. For example, even when this double-sided light emitting gaze guidance sign is installed in the central separator, the traveling vehicle It is possible to realize surface emission in which the sign can be visually recognized not only for the driver but also for the driver of the oncoming vehicle.

  In addition, unlike conventional gaze guidance signs, it is not necessary to place a light emitter on the entire light emitting surface, so that it can be manufactured at a low cost and has a simple internal structure, so that complicated work is performed during maintenance. It is also possible to achieve the effect of eliminating the necessity.

It is the figure which looked at the double-sided light emission gaze guidance sign of this invention from the front. It is a figure which shows the internal structure of the double-sided light emission gaze guidance sign of FIG. It is sectional drawing which looked at the double-sided light emission gaze guidance label | marker of FIG. 1 from the side surface.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Light guide plate 2 ... Light guide plate cover 3 ... Battery storage holder 3a ... Battery 3b ... Battery holder 4 ... Reflective sheet 5 ... LED lamp unit 5a ... LED lamp 6 ... Control board

Claims (2)

Two light guide plates each formed with a dot pattern for diffusing incident light on one side;
A reflection sheet sandwiched between two light guide plates in a state where the surface on which the dot pattern is formed is opposed;
A milky white light guide plate cover that fixes the two light guide plates and the reflection sheet inside with a part of the light guide plate exposed to the outside from the opening,
A plurality of LED lamps are arranged in a row so that light is incident on the two light guide plates positioned above, and the light guide plate cover is built in so that the reflection sheet exists immediately above each LED lamp. An LED lamp unit,
A control board for supplying electricity from the power source to each LED lamp of the LED lamp unit;
A double-sided luminous line-of-sight guidance sign, comprising: The dot pattern formed on the light guide plate is a gradation pattern in which the diameter of the dots gradually increases as the distance from the light incident side from the LED lamp increases. The double-sided luminous gaze guidance sign as described.

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