JPH09264011A - Sign device with snow deposition preventing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent deposition of snow by attaching a transparent member on the front surface of sign board set slightly inclined forward, at a larger forward inclination angle than that of the sign bord, and forming the upper part of the member in a curved surface. SOLUTION: A side surface part 4a of a hood 4 mounted on a light emission diode control box 2 and a sign board 3 is made narrower in its lower side width than its upper side width, and on an upper end of the side surface 4a an upper surface part 4b is formed. Then, in an opening formed by the side surface 4a and the upper surface 4b a transparent member 5 such as acryl board is set. In this case the board 3 is slightly inclined forward to a perpendicular line. and the member 5 is put in a further inclined state. When wind blows from the front surface of sign device, the wind flows downward evenly without stagnation of the wind, thereby preventing the deposition of snow. If required a hood with a spape to prevent generation of stagnation point of wind is arranged on an upper edge of the hood 4. Accordingly it is possible to prevent generation of unable recognition condition of sign and prevent decrease of unable recognition of the sign with the less foward inclination angle of the sign board.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sign device such as a road sign plate for preventing snow from adhering to the front surface of the sign plate during snowfall.

[0002]

2. Description of the Related Art A conventional road marking device, for example, a round road marking device having a built-in light emitting diode and displaying the maximum speed by the light emitting diode, is displayed by snowfall when installed in an area with a large amount of snowfall. Characters and the like will not be visible after snowing on the surface, so methods such as mechanically dropping them or using freezing point depression due to chemical substances can be considered.

By the way, the mechanical drop method has a problem in terms of manufacturing cost and cost, and the chemical drop method has problems such as performance durability and environmental pollution. There is. Therefore, a road sign device in which a heater is buried on the surface of the sign plate has been developed and used. However, since the power consumption is large, the electricity cost required for one season is considerable.

In view of the above, there has been developed a device in which a snow-covered eave is mounted on the upper surface of a sign plate to prevent snow on the display surface. For example, Japanese Unexamined Utility Model Publication No. 4-44650 discloses this. That is, the inclined plate b is different from the sign plate a shown in FIG.
Is projected obliquely upward, and a substantially vertical restraining plate c is extended to the upper front of the inclined plate b at the protruding end of the inclined plate b. Then, in this restraint plate c, snow is piled up on the inclined plate at the time of snowfall, and the restraint plate c becomes an eaves,
It is described that snow can be prevented from landing on the front surface of the sign board a.

[0005]

Certainly, in this snowproof plate, when there is snowfall in a windless state, as described above, snow is accumulated on the sloping plate and little snow is deposited on the display surface. However, when the wind is blowing toward the display surface, there is a problem that snow is accumulated on the inclined plate but snow is also generated on the display surface.

That is, as shown in FIG. 6, when the wind blows from the surface of a sign board installed vertically, a stagnation point of the wind is formed at the center of the sign board and the boundary between the inclined board and the sign board. Since the snow accretion S develops from that point, there is a problem that snow accretion occurs at the boundary between the center of the surface of the signboard and the boundary, making it difficult to see the display.

The present invention is intended to solve the above-mentioned problems, and an object of the present invention is to tilt the front surface of the signboard forward and downward so as to direct the wind flow downward. Another object of the present invention is to provide a marking device provided with a snow accretion preventive device, which is characterized by preventing snow accretion on the entire surface.

[0008]

SUMMARY OF THE INVENTION A sign device provided with a snow protection device according to the present invention achieves the above-mentioned object.
The means is to mount a transparent member on the front surface of a sign board attached slightly forward with respect to a vertical line in a forward tilt state larger than the tilt angle of the sign board, and above the transparent member.
It has a curved shape to prevent stagnation of wind.

Further, a transparent member is attached to the front surface of a sign plate mounted slightly forward with respect to a vertical line in a state of being tilted forward and larger than the tilt angle of the sign plate, and at the upper edge of the transparent member. The curved eaves are attached to prevent stagnation of wind.

Further, the eaves are formed on the upper part of the sign plate mounted slightly forward with respect to the vertical line, and the side surface shape extending from the sign plate to the eaves is a curved surface shape for preventing stagnation of wind. Is.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a sign device provided with a snow accretion prevention device according to the present invention will be described below with reference to the drawings. 1 and 2 are a perspective view and a cross-sectional view showing a first embodiment, 1 is a pole, 2 is a control box for controlling a light emitting diode displayed on the front face of a sign board 3, and the pole is It is fixed to the No. 1 through the mounting bracket 2a and the mounting member 2b in a state of being inclined forward by about 15 degrees. The above configuration is a known road sign.

Reference numeral 4 is the control box 2 or sign plate 3
As a hood attached to the side surface 4a, the side surface portion 4a is formed such that the width of the lower side is narrower than that of the upper side. An upper surface portion 4b is formed on the upper end of the side surface portion 4a. Reference numeral 5 is a transparent member made of a transparent plate such as an acrylic plate attached to the opening edge formed by the side surface portion 4a and the upper surface portion 4b, and has a curved shape at the upper side to prevent stagnation of wind.

Since the sign board 3 is fixed in a state of being tilted forward by 15 degrees with respect to the vertically-standing pole 1, and the side surface portion 4a of the hood 4 is tilted forward by 15 to 20 degrees,
The transparent member 6 is attached in a state of being inclined forward by about 30 to 35 degrees with respect to the vertical line.

Next, the reason why snow will not land will be described with reference to FIG. Dry snow below freezing has little adhesion and does not land easily when the wind is weak, but it begins to land when the wind speed exceeds 4-5 m. It is thought that this is because the kinetic energy of the snowflakes is replaced with thermal energy by colliding with the object, and melts and adheres and freezes at the contact point with the object.

Therefore, if wind blows from the front of the marking device as shown in FIG.
Due to the fact that the wind is inclined forward and the upper side of the transparent member 5 is formed into a curved shape, the wind uniformly flows downward as shown by the arrow, and the stagnation point of the wind disappears, so that the wind is worn. It does not snow and does not hinder the recognition of signs.

FIG. 4 shows the second embodiment. In the previous embodiment, the transparent member 5 has a curved surface shape for eliminating the stagnation point of the wind. In this case, the transparent member 5 has a flat plate shape, and an eaves 6 formed integrally with the upper edge of the hood 4 is formed so as to eliminate wind stagnation points.

Also in this embodiment, as in the first embodiment, the wind uniformly flows downward due to the curved shape of the eaves 6 as indicated by the arrow, and the stagnation point of the wind disappears. It does not snow and therefore does not interfere with the recognition of the sign.

In the first and second embodiments described above, snow is prevented by tilting the transparent member 5 forward with respect to the sign plate 3, so that the sign plate 3 itself is There is no need to tilt it so far, and therefore the visibility of the display from the vehicle does not deteriorate even if the signboard 3 is not at a high position.

FIG. 5 shows a third embodiment. In the two previous embodiments, the transparent member 5 is arranged on the front surface of the sign board 3 and the upper side of the transparent member 5 is formed into a curved shape. In this case, the transparent member 5 is formed in a flat plate shape and the curved eaves 6 is attached to the upper edge of the hood 4, but in the present embodiment, the upper edge of the sign plate 3 is curved in a flush state. Shaped eaves 6
Is attached.

Also in this embodiment, as in the previous two embodiments, the wind uniformly flows downward due to the curved shape of the eaves 6 as shown by the arrow, and the stagnation point of the wind disappears. It does not snow and therefore does not interfere with the recognition of the sign. The eaves 6 may be formed of a flat plate and tilted forward, and a curved member for eliminating the stagnation point of the wind may be attached to the joint between the eaves 6 and the marker plate 3.

[0021]

As described above, according to the present invention, the transparent member is attached to the front surface of the sign board in the forward tilted state, and the eaves attached to the upper portion of the transparent member or the upper edge of the hood to which the transparent member is attached are provided with the wind. Since it has a curved surface shape to prevent stagnation, stagnation of wind does not occur on the surface of the transparent member, so that it is not impossible to recognize the sign due to snow accretion, and Even if the forward tilt angle is small, snow accretion can be prevented, so that the visibility of the display on the signboard does not deteriorate.

Further, by forming the curved eaves on the upper edge of the sign board to prevent the stagnation of wind, the stagnation of wind does not occur on the front surface of the sign board.
It is possible to fully recognize the sign due to snow accretion.

[Brief description of drawings]

FIG. 1 is a first sign board provided with a snow accretion preventive tool according to the present invention.
It is a perspective view of an Example.

FIG. 2 is a sectional view of the same.

FIG. 3 is an explanatory diagram for explaining a flow of wind.

FIG. 4 is a side view of the second embodiment.

FIG. 5 is a side view of the third embodiment.

FIG. 6 is an explanatory diagram for explaining a flow of wind in a conventional example.

[Explanation of symbols]

 1 pole 2 control box 3 signboard 4 hood 5 transparent member 6 eaves

 ─────────────────────────────────────────────────── --- Continuation of the front page (72) Inventor ▲ Shark ▼ Shima Toshi ▲ Takashi ▼ 4-7-17 Ichibancho, Aoba-ku, Sendai-shi, Miyagi Sendai Road Engineer Co., Ltd. (72) Inventor Michio Torikai Kanagawa 100, Maeda-cho, Totsuka-ku, Yokohama City Koito Industry Co., Ltd. (72) Inventor Yasuhiro Tomita 36, Terada Shinjo, Joyo-shi, Kyoto Seiwa Electric Co., Ltd. (72) Inventor Masahiro Hattori 1 Yokohori-cho, Nakagawa-ku, Nagoya 36-chome Nakoya Electric Industry Co., Ltd.

Claims (3)

[Claims] 1. A transparent member is mounted on a front surface of a sign plate which is attached to be tilted slightly forward with respect to a vertical line, in a state of being tilted forward and larger than the tilt angle of the sign plate, and the upper part of the transparent member is provided with a wind. A marker device provided with a snow accretion preventive tool having a curved surface shape for preventing stagnation. 2. A transparent member is attached to a front surface of a sign plate attached to be tilted slightly forward with respect to a vertical line in a state of being tilted forward and larger than a tilt angle of the sign plate, and to an upper edge of the transparent member. A marker device provided with a snow accretion preventive device, characterized in that a curved eaves for preventing stagnation of wind is attached. 3. An eaves is formed on an upper part of a sign board attached to be tilted slightly forward with respect to a vertical line, and a side surface shape extending from the sign board to the eaves is a curved surface shape for preventing stagnation of wind. A marking device equipped with a snow accretion preventive device.