JP2521014B2 - Freezing display labeling device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a freeze display marking device for warning a driver or a road administrator of freezing of a road surface that occurs in winter.

[0002]

2. Description of the Related Art As a conventional freeze marking device, there is a technique disclosed in Japanese Utility Model Laid-Open No. 52-142392.

That is, a device for detecting a freezing temperature of a road surface is provided, and when a set temperature is sensed, a sign for warning the freezing of the road surface is turned on and a display character appears at the same time as a rotation warning light or a flashing warning light. Is the one that works.

On the other hand, a reflective marker device which clearly indicates the existence of a roadside zone by a retroreflective surface is known from Japanese Utility Model Laid-Open No. 58-10913.

[0005]

In the case where the rotation warning light or the blinking warning light is activated at the same time when the above-mentioned sign is turned on and the displayed character is raised, an external power supply is required, and the power supply is controlled. If the device is overturned due to a strong wind, a vehicle collision, or the like, a display warning that the road surface is frozen cannot be made thereafter.

Further, in the reflective sign device which clearly indicates the existence of the roadside belt by the retroreflective surface, the existence of the left and right road shoulders can be known by the white or yellow color, but it is limited to the display of the road width.

[0007] On the other hand, as another prior art, an actual Kaihei 4-21
The techniques disclosed in Japanese Patent Application No. 009 and Japanese Utility Model Laid-Open No. 62-12612 can be mentioned.

First, in Japanese Utility Model Publication No. 4-21009,
Disclosed is a technique of a rotary reflecting plate that creates a time when the light hits the reflecting plate and a time when the light does not hit by rotating the reflecting plate. In this technique, since the reflector is rotated by the electric motor, the reflected light of the reflector can be obtained as a blinking signal from the driver. However, the displayed contents are merely blinking, and the rotating electric motor requires an external power source, which makes the construction difficult.

Further, in Japanese Utility Model Laid-Open No. 62-12612, there is disclosed a road icing alarm reflecting mirror which is rotatably attached to a housing and in which a reflecting surface provided on one surface is rotationally displaced by 90 degrees depending on temperature. The technology is disclosed. However, even if the reflector maintains a state of a vertical plane and a horizontal plane at a predetermined temperature, the road freeze warning reflector installed on the road is in the same line of sight as the horizontal plane of the reflector due to the vehicle height, Or, when the line of sight is located at a height position away from the horizontal plane of the reflecting mirror, the observation of the road freeze warning reflecting mirror is completely different. Therefore, even if the reflector is rotated 90 degrees in a plane perpendicular to the horizontal plane, if the position of the driver's eyes that recognizes it changes, the meaning of the road freeze warning reflector becomes unclear and the displayed contents are accurately transmitted. There is a risk that it will not be done and it is not practical.

Therefore, the present invention provides a freezing display marker device capable of notifying a driver, a road manager, or the like of a road surface freeze occurring in winter in a display form different from that of an existing sign, without relying on an external power source. The challenge is to provide.

[0011]

According to a first aspect of the present invention, there is provided a freeze display marker device having a housing to which it can be attached and a front surface provided on the front surface and provided with a front side retroreflective surface portion and a light transmitting portion on the front surface side. Member and a retroreflective surface that is rotatably attached to the back surface of the front member and has a retroreflective surface different from that of the front member, which is in an exposed state or a non-exposed state through the light transmitting portion of the front member when viewed from the front surface. It is provided with a moving member and a temperature-responsive driving means for turning and changing the retroreflective surface of the turning member into the exposed state or the non-exposed state depending on the temperature about the freezing temperature.

According to a second aspect of the freeze display marker device,
It is slidably mounted in parallel with the front member provided with a light-transmitting portion disposed in the attachable housing, and can be exposed through the light-transmitting portion of the front member when viewed from the front. , A sliding member having a retroreflective surface that cannot be exposed from the front surface depending on the sliding position, and a retroreflective surface of the sliding member that can or cannot be exposed depending on the temperature around the freezing temperature And a temperature-responsive driving means for slidingly changing the state.

The marking device for freeze display according to claim 3 is
A front member provided in a mountable housing and having a front side retroreflective surface portion provided on the front surface side; and a bending member provided with a retroreflective surface portion provided adjacent to the front side retroreflective surface portion and freely bendable. A temperature-responsive driving means for changing the retroreflective surface of the bending member to a state in which it can be exposed or cannot be exposed depending on the temperature around the freezing temperature.

The marking device for freeze display according to claim 4 is
A rotatable pair of rotating members provided in a mountable housing and provided with a retroreflective surface portion, a connecting means for rotating the rotating members of the pair in a one-to-one relationship, and the rotating member. The temperature-responsive driving means is attached to the member, and changes the rotation of the rotating member according to the temperature around the freezing temperature.

[0015]

According to the present invention, the front side retroreflective surface portion of the front member provided with the light transmitting portion is exposed on the front surface side of the attachable housing. In addition, the temperature responsive driving means exposes the retroreflective surface portion of the rotating member through the light transmitting portion of the front member. As a result, the driver or the like can be made to recognize the retroreflection by the front side retroreflective surface portion of the front member and the retroreflective surface portion of the rotating member. When the retroreflective surface portion of the rotating member is no longer exposed through the light transmitting portion of the front member by the temperature responsive driving means,
Retroreflection is performed only by the front side retroreflective surface portion of the front member. Therefore, the difference between the retroreflection by the front side retroreflective surface portion of the front member and the retroreflective surface portion of the rotating member and the retroreflection by the front side retroreflective surface portion of the front member can be changed by the temperature responsive driving means.

In the second aspect, the front side retroreflective surface portion of the flat plate member provided with the light transmitting portion is exposed on the front surface side of the attachable housing. Also, the temperature-responsive driving means exposes the retroreflective surface portion of the sliding member through the light transmitting portion of the front member. As a result, the driver or the like can be made to recognize the retroreflection by the front side retroreflective surface portion of the front member and the retroreflective surface portion of the sliding member. When the temperature-responsive driving means causes the retroreflective surface portion of the sliding member to be unexposed through the light transmitting portion of the front member, the retroreflective surface portion of the front member only retroreflects. Therefore, the difference between the retroreflection by the front side retroreflective surface portion of the front member and the retroreflective surface portion of the sliding member and the retroreflection by the front side retroreflective surface portion of the front member can be changed by the temperature responsive driving means.

In the third aspect, the front side retroreflective surface portion of the front member provided with the light transmitting portion is exposed on the front surface side of the attachable housing. In addition, the temperature-responsive driving means exposes the retroreflective surface portion of the bending member that is adjacent to the front-side retroreflective surface portion and is bendably arranged. As a result, the driver or the like can be made to recognize the retroreflective surface portion of the front member and the retroreflective surface portion of the bending member. Then, when the temperature-responsive driving means does not expose the retroreflective surface portion of the bending member, it is possible to recognize the retroreflection by only the front retroreflective surface portion of the front member. Therefore, the difference between the retroreflection by the front-side retroreflective surface portion of the front member and the retroreflective surface portion of the bending member and the retroreflection by the front-side retroreflective surface portion of the front member can be changed by the temperature-responsive driving means.

In the fourth aspect, the retroreflective surface portions of the pair of rotating members are exposed on the front surface side of the attachable housing. Further, the other surface of the rotating member is exposed by the temperature-responsive driving means. This allows the driver or the like to recognize the retroreflection by the retroreflection surface portions of the pair of rotating members. Then, when the temperature-responsive drive means makes the retroreflective surface portions of the pair of rotating members unable to be exposed, the opposite surface of the pair of rotating members is exposed. Therefore, it can be changed by the temperature responsive driving means between the one surface and the other surface of the retroreflective surface portion of the pair of rotating members.

[0019]

Embodiments of the present invention will be described below.

<First Embodiment> FIG. 1 is a perspective view showing a frozen display marker device according to a first embodiment of the present invention in a retroreflective operation state, and FIG. 2 is a first embodiment of the present invention. It is a longitudinal cross-sectional view of a display marker device.
Further, FIG. 3 is an explanatory view of a normal state display (a) and a road surface frozen state display (b) when the road surface is not frozen as viewed from the front of the freeze display marking device according to the first embodiment of the present invention, and FIG. It is the explanatory view seen from the front (a) and the back (b) of the marking device for freezing display which is a 1st example of the present invention.

1 to 4, a column-shaped housing 2 made of an opaque synthetic resin material, a metal plate, a mold or the like is attached to the column 1, and the housing 2 has a white or yellow retroreflective surface. A front side retroreflective surface portion 3a similar to a known delineator that clearly indicates the existence of a roadside zone by
The front member 3 made of a transparent acrylic plate or a transparent glass plate having the above is attached.

The front member 3 is, as shown in FIG.
Front side retroreflective surface portions 3a made of white or yellow retroreflective surfaces are formed at intervals of approximately 60 degrees, and the transparent portion 3
Also for b, it is formed in the middle of the front side retroreflective surface portion 3a formed at intervals of about 60 degrees so that the back surface can be visually recognized without being complicatedly refracted. Usually, this type of front member 3 is formed by injection molding of synthetic resin, and a screw screwed to the housing 2 is formed around the front member 3, and does not necessarily have a simple flat plate shape.

As shown in FIG. 3A, the transparent portion 3b of the front member 3 can recognize the retroreflective surface portion 4a disposed on the back side and formed on the rotating member 4 due to its transparency. ing. As shown in FIG. 4A, the rotating member 4 has retroreflective surface portions 4a composed of white or yellow retroreflective surfaces formed at intervals of approximately 60 degrees, and the non-reflective portion 4b is substantially formed. It is formed in black so as not to reflect incident light that reaches the middle of the retroreflective surface portion 4a formed at intervals of 60 degrees. Usually, this type of rotating member 4 is formed by injection molding of synthetic resin, and the shaft 5 is embedded in the center thereof during injection molding.

As shown in FIG. 4 (b), a contact portion 4c and a contact portion 4d are integrally formed on the back surface of the rotating member 4. The abutting portions 4c and 4d come into contact with the stopper 2a formed on the housing 2 to restrain the rotation thereof, whereby the rotating member 4 can be rotated only about 60 degrees, and From the transparent portion 3b of the member 3, as shown in FIG.
A state in which the entire surface of the retroreflective surface portion 4a formed in
Alternatively, the state in which the entire surface of the non-reflecting portion 4b can be recognized is maintained by the temperature responsive driving means described later.

A bearing portion 3c is formed in the center of the inner surface of the housing 2 of the front member 3. A bearing portion 2c is also formed in the center of the inner surface of the housing 2. An end portion of a shaft 5 provided at the center of the rotating member 4 is supported by the bearing portion 2c and the bearing portion 3c. In detail, the bearing portion 2c and the bearing portion 3c are the apical shaft bearing of the shaft 5 having a tapered end portion. Shaft 5
The supporting portion between the taper end of the shaft 3 and the bearing 3c is the rotating member 4
The recessed portion 4d formed in the central portion is fitted to form a shape in which dust or the like is unlikely to enter between the shaft 5 and the bearing portion 3c. Further, the support portion between the tapered end of the shaft 5 and the bearing portion 2c is fitted into the recess of the cover member 6 attached to the shaft 5, so that dust or the like is unlikely to enter between the shaft 5 and the bearing portion 2c. I am trying.

The end of the temperature-responsive drive means 7 formed by spirally winding a shape memory alloy on the shaft 5 is studded, and the other end is studded to the housing 2. The temperature-responsive driving means 7 used in this embodiment, which is formed by spirally winding a shape memory alloy, is shaped so as to roughen the winding density (return to the winding direction) at a temperature of 1 to 2 ° C. or less. Is stored, and when the temperature is exceeded, the winding density is made dense (winding in the winding direction).

Therefore, when the temperature of the temperature responsive driving means 7 made of the shape memory alloy is lower than the freezing point temperature, the temperature responsive driving means 7 made of the shape memory alloy turns the turning member 4 to the right to bring it to the substantially freezing point temperature. When the temperature exceeds a high temperature, the temperature-responsive driving means 7 rotates the rotating member 4 to the left. This rotation is caused by the contact portion 4c formed on the back surface of the rotation member 4.
Alternatively, by contact between the contact portion 4d and the stopper 2a,
The rotation is restrained, and as shown in FIG. 3B, the transparent member 3b of the front member 3 is permeable to the rotation member 4 so as to be rotated.
The non-reflective portion 4b formed in 1) can be recognized, and as a result, the front side retroreflective surface portion 3a formed of the white or yellow retroreflective surface of the front member 3 can be exposed. In addition, FIG.
As a result, the entire surface of the retroreflective surface portion 4a formed on the rotating member 4 can be recognized, and as a result, the front side retroreflective surface portion 3a and the rotating member which are white or yellow retroreflective surfaces of the front member 3 are recognized. The retroreflective surface portion 4a formed in 4
Can be expressed.

When the change area of the temperature responsive driving means 7 is set, the stopper function becomes unnecessary. Also,
Although the front surface member 3 is used as a member for sealing the housing 2, the housing 2 can be sealed by another member when the present invention is carried out. On the contrary, the inside of the housing 2 can be opened by making the transparent portion 3b of the front member 3 a notch.

<Second Embodiment> FIG. 5 is a vertical cross-sectional view of a frozen display marker device according to a second embodiment of the present invention. FIG. 6 is a front view of the freeze display marker device according to the second embodiment of the present invention as viewed from the back surface. FIG. 7 is an explanatory view of a normal state display (a) and a road surface frozen state display (b) as seen from the front of the freeze display marker device according to the second embodiment of the present invention. In the figure, the same reference numerals and symbols as those of the first embodiment indicate the same or corresponding components as those of the first embodiment, and therefore, duplicate description will be omitted.

In FIG. 5, a front member made of a transparent acrylic plate or a transparent glass plate having a front side retroreflective surface portion 3a similar to a known delineator in which the housing 2 has a white or yellow retroreflective surface to clearly indicate the existence of a roadside belt. 3 is attached.

The front member 3 is, as shown in FIG.
The front side retroreflective surface portion 3a formed of a white or yellow retroreflective surface is formed as a substantially equilateral triangle, and the transparent portion 3b is in contact with the equilateral triangle forming the front side retroreflective surface portion 3a and the equilateral triangle. It is formed so that a portion surrounded by an arc between the circle and the circle can be visually recognized without complicated refraction. Usually, the front member 3 of this type is formed by injection molding of synthetic resin, and a screw screwed to the housing 2 is formed around the front member 3, and does not always have a simple flat plate shape.

As shown in FIG. 7A, the transparent portion 3b of the front surface member 3 can recognize the retroreflective surface portion 14a disposed on the back side and formed on the variable member 14 due to its transparency. There is. As shown in FIG. 5, the variable member 14 has a retroreflective surface portion 14a formed of a white or yellow retroreflective surface only on one surface, and the other surface is a non-reflective surface. It is formed in matte black so as not to reflect the incident light.

As shown in FIG. 6, the rear surface of the variable member 14 is in a state where the entire surface of the retroreflective surface portion 14a formed on the variable member 14 can be recognized or not due to the transparency of the transparent portion 3b of the front member 3. The state that the entire surface of the reflection part can be recognized,
It is maintained by the temperature-responsive driving means 7 described later.

That is, a mounting portion 2d is formed at the center of the inner surface of the housing 2. The central portion of the temperature responsive drive means 7 made of a shape memory alloy formed in a substantially Y shape is attached to the attachment portion 2d so as not to rotate. An end portion of the temperature-responsive driving means 7 formed in the substantially Y shape is joined to the back surface of the variable member 14. The temperature responsive driving means 7 made of this shape memory alloy is 1 to 2
It is stored so as to bend inside the housing 2 at a temperature of not more than 0 ° C. When the temperature exceeds the above temperature, it moves to the surface side of the transparent portion 3b of the front member 3 and becomes a substantially flat state.

Therefore, when the temperature of the temperature responsive driving means 7 made of the shape memory alloy is substantially below the freezing point temperature, the temperature responsive driving means 7 made of the shape memory alloy bends the variable member 14 inward and exceeds the substantially freezing point temperature. When the temperature becomes high, the temperature-responsive driving means 7 displaces the variable member 14 in the outward direction to bring it into a flat plate state. The change of the temperature responsive driving means 7 made of the shape memory alloy is regulated by contacting the inner surface of the housing 2 or the transparent portion 3b of the front member 3.

Therefore, when the temperature of the temperature responsive driving means 7 made of a shape memory alloy is substantially below the freezing point temperature, the temperature responsive driving means 7 made of a shape memory alloy bends the variable member 14 inward so that the transparent portion of the front member 3 is covered. As shown in FIG. 7A, the retroreflective portion 14a formed on the variable member 14 cannot be recognized from 3b as shown in FIG. As shown, the retroreflective surface is a substantially equilateral triangle.

Further, when the temperature of the temperature responsive driving means 7 made of a shape memory alloy reaches a high temperature which is substantially higher than the freezing point temperature, the temperature responsive driving means 7 displaces the variable member 14 in the outward direction to form a flat plate state. . In this state, the temperature responsive driving means 7
Of the variable member 14 on the surface of the transparent portion 3b of the front member 3.
The retroreflective surface portion 14a formed on the
In addition to the front side retroreflective surface portion 3a formed of the white or yellow retroreflective surface, the entire surface of the retroreflective surface portion 14a formed on the variable member 14 is exposed. As a result, from the driver or the like, as shown in FIG. 7 (a), it becomes a substantially circular retroreflective surface.

In the present embodiment, a substantially circular retroreflective surface and a substantially equilateral triangular retroreflective surface are used to drive the driver,
The road administrator can determine whether the road surface temperature is below the freezing temperature. At this time, if the temperature characteristics of the temperature-responsive driving means 7 are reversed, the meanings of the shapes expressed by the substantially circular retroreflective surface and the substantially equilateral triangular retroreflective surface can be reversed. Further, by changing the colors of the front side retroreflective surface portion 3a formed of the white or yellow retroreflective surface of the front member 3 and the retroreflective surface portion 14a formed on the variable member 14, it is possible to emphasize the change of the road surface condition. it can.

In this embodiment, when the freezing temperature of the road surface becomes lower than the freezing temperature, each end of the temperature-responsive driving means 7 formed in the substantially Y shape is retroreflected independently on the variable member 14. The position of the surface portion 14a is changed. However, when the present invention is carried out, it is preferable that when the freezing temperature of the road surface becomes lower than the freezing temperature of the road surface, the retroreflective surface portion 14 formed on the entire variable member 14 is used.
Since the position of “a” should be displaced, it is preferable to make the changing positions uniform by a ring or the like in order to make the movements of all the variable members 14 uniform.

Further, the temperature-responsive driving means 7 of this embodiment is
As long as the direction of the retroreflective surface portion 14a formed on the entire variable member 14 can be rapidly displaced at a temperature near the freezing temperature of the road surface, bimetal or trimetal having a snap function can be used.

<Third Embodiment> The front side retroreflective surface portion 3a formed of a white or yellow retroreflective surface of the front member 3 of this type and the retroreflective surface portion 14a formed on the variable member 14 are used to form, for example, the characters shown in FIG. Like the reference example showing the example of the display, paired "freezing caution",
The characters "slip caution" and "frozen road" may be displayed, and the character "running caution" may be displayed when the retroreflective display is performed on the retroreflective surface.

FIG. 8 is a vertical cross-sectional view of the freeze display marker device according to the third embodiment of the present invention as viewed from the front. In the drawings, the same reference numerals and symbols as those of the first embodiment or the second embodiment show the same or corresponding constituent parts as those of the first embodiment or the second embodiment, and therefore, they are duplicated here. The description is omitted.

In FIG. 8, the retroreflective display of the pair of retroreflective surfaces 13a and 13b on the housing 2 of this embodiment is as follows.
The pair of retroreflective members 13A and 13B are provided with a retroreflective portion on which a character that can be identified by retroreflection by a headlight is attached to the pair of retroreflective surfaces 13a and 13b. Each retroreflective member 13A, 13B is a shaft 15
It is rotatably supported by the bearing of the housing 2 by A and 15B. Further, the temperature responsive driving means 17 formed by spirally winding a shape memory alloy on the shafts 15A and 15B.
The ends of A and 17B are tacked, and the other ends are tacked to the housing 2. The temperature-responsive driving means 17A, 17B used in this embodiment, which is formed by spirally winding a shape memory alloy, has a shape memorized so that the winding density is rough at a temperature of 1 to 2 ° C. or less. And also
It is memorized so that the winding density becomes dense when the temperature is exceeded.

A pair of gears 11A and 11B having the same diameter are meshed with the shafts 15A and 15B in accordance with the number of pairs of the retroreflective surfaces 13a and 13b.
The teeth of 1B are cut by about 180 degrees, but the engagement between the two is prohibited in order to function as a stopper that prevents further rotation.

Therefore, when the temperature of the temperature-responsive driving means 17A, 17B made of shape memory alloy is substantially below the freezing point temperature, for example, as in the reference example showing the example of character display in FIG. When exposed, when the temperature reaches a high temperature that is substantially higher than the freezing point temperature, it is possible to rotate from the position shown in FIG. 8 to expose characters such as “notice running” not shown. Therefore, the driver can recognize the condition of the road surface by the letters on the retroreflective surface.

The marking device for freeze display of the embodiment of this kind is as follows.
Since the weights applied to the shafts 15A and 15B are vertically supported, the weights are concentrated at one point that is vertically supported, and the contact resistance can be reduced.

As described above, in the above embodiment, the housing 2 which can be attached to the support 1 and the like, and the front side of the housing 2 is formed, and the front side retroreflective surface portion 3a and the transparent portion 3 are provided on the front surface side.
The front member 3 provided with b and the back surface of the front member 3 are rotatably attached in parallel, and can be recognized through the transparent portion 3b of the front member 3 when viewed from the front surface. As seen, the rotating member 4 having a retroreflective surface hidden by the front-side retroreflective surface portion 3a of the front member 3 and the retroreflective surface 4a of the rotating member 4 are exposed or concealed depending on the temperature around the freezing temperature. And a temperature-responsive driving means 7 for dynamically changing the temperature.

Therefore, since the temperature-responsive driving means 7 rotationally displaces the rotating member 4 by the substantially freezing temperature, when the temperature becomes substantially the freezing temperature, the retroreflective surface provided on one flat surface of the rotating member 4 causes the rotating member 4 to move. The display can be changed.
Therefore, it is possible to notify the driver, the road administrator, or the like of the freezing of the road surface that occurs in winter without relying on an external power source.

In particular, as in the embodiment shown in FIG. 2, in the case where the closed container can be formed by the housing 2 and the front member 3, the device can have a long life. Also,
The retroreflective surface 4a of the rotating member 4 is exposed through the transparent portion 3b of the front member 3, and the non-reflective portion 4 of the rotating member 4 is shown.
When b is at the position of the transparent portion 3b, the direct reflection by the transparent portion 3b cannot be ignored, and thus the visual recognition effect is slightly reduced. However, if the transparent portion 3b of the front member 3 is a cutout portion, the visual effects of the front side retroreflective surface portion 3a and the retroreflective surface 4a are equal.

Further, in the embodiment shown in FIG. 2, a shape memory alloy is used as the temperature responsive driving means 7, and the winding number density can be rapidly changed in the vicinity of the road surface freezing temperature. Can be reduced.

In the above embodiment, the circular display is assumed, but various shapes such as a rectangular display or a square display may be used depending on the shapes of the housing 2 and the front member 3. In the case of this kind of embodiment, as shown in the explanatory view of the longitudinal section of the freeze display marker device according to the fourth embodiment of the present invention in FIG. 9, the translucent character area A, B is formed in advance, and the sliding member 39 having the retroreflective regions a and b arranged on the back surface is balanced between the spring 37 using the shape memory alloy as the temperature responsive driving means and the normal spring 38. As shown in FIG. 9A, when the road surface is frozen, the spring 37 using a shape memory alloy becomes weaker than the elasticity of the normal spring 38, and the front member 3 has a translucent character area A, Predetermined characters can be displayed from B by the retroreflective areas a and b of the sliding member 39. Further, as shown in FIG. 9B, the spring 37 using a shape memory alloy becomes stronger than the elasticity of the normal spring 38 in a temperature state exceeding the freezing temperature of the road surface, so that the front member 3 has a translucent character area. When the retroreflective regions a and b of the sliding member 39 are not present at the positions A and B, it is not possible to display a predetermined character, and thereby the freeze release of the road surface can be displayed.

That is, in the above embodiment, the front member 3 is provided with the housing 2 which can be attached to the support 1 and the like, and the transparent portion such as the translucent character areas A and B disposed on the front side of the housing 2. And is slidably attached in parallel to the back surface of the front member 3, and can be recognized through the light transmitting portion of the front member 3 when viewed from the front surface. Sliding member 39 having a hidden retroreflective surface
According to the temperature around the freezing temperature, the sliding member 39
And a spring 37 as a temperature responsive driving means for slidingly changing the retroreflective surface to the exposed or concealed state.

Therefore, since the temperature-responsive driving means displaces the sliding member 39 by the substantially freezing temperature, when the temperature becomes substantially the freezing temperature, the display is changed by the retroreflective surface provided on one plane of the sliding member 39. be able to. Therefore, it is possible to notify the driver, the road administrator, or the like of the freezing of the road surface that occurs in winter without relying on an external power source.

Further, in the above embodiment, the transparent portion 3b of the front member 3 and the translucent character areas A and B can be used as the translucent portion of the front member 3. In this type of embodiment, the housing 2 can be sealed with the front member 3,
The rotating portion is less likely to be affected by dust such as sand and dirt, and the life of the device can be extended.

The transparent portion 3b of the front member 3 and the translucent character areas A, B, etc. of the above embodiment can be cutout portions of the front member 3. In the notch of the front member 3 of this kind, since it does not reflect itself, the presence or absence of the retroreflective surface arranged on the back surface can be clearly expressed.

Further, the freeze display marking device of the above-described embodiment has a housing 2 to which it can be attached and a front side retroreflective surface 3 formed on the front side of the housing 2 and fixed to the front side.
a front member 3 provided with a, a folding member 14 provided with a front side retroreflective surface portion 14a that is adjacent to the fixed front side retroreflective surface portion 3a and is foldable, and about the freezing temperature The front side retroreflective surface 14 of the bending member 14 depends on the temperature.
and a temperature responsive driving means 7 for changing a to an exposed or concealed state.

Therefore, the display of the front-side retroreflective surface portion 14a of the bending member 14 can be changed with the freezing temperature of the road surface as a boundary, thereby prompting the driver or the like to pay attention to slip or the like due to freezing of the road surface. . Therefore, it is possible to notify the driver, the road administrator, or the like of the freezing of the road surface that occurs in winter without relying on an external power source.
In particular, in this embodiment, the front side retroreflective surface 1 of the bending member 14 is
Since 4a is directly changed by the temperature-responsive driving means 7, the number of parts is reduced and the structure can be simplified. Further, since a bearing or the like is not particularly required, it is suitable when the front member 3 provided with the front retroreflective surface 3a and the bending member 14 provided with the front retroreflective surface portion 14a are exposed and used.

Furthermore, the marking device for freeze display according to the above-mentioned embodiment has a housing 2 to which it can be attached, and the housing 2
And a pair of rotatable members provided with the retroreflective surface portions 13a and 13b, that is, a pair of rotatable members 13A and 13B and a pair of rotatable members 13A and 13B. Connecting means composed of gears 11A and 11B, and temperature-responsive driving means 17A and 17B attached to the rotating members 13A and 13B and rotating and changing the rotating members 13A and 13B depending on the temperature about the freezing temperature. It is equipped with.

Therefore, with the freezing temperature of the road surface as the boundary, the retroreflective surface portions 13a, 1 of the rotating members 13A, 13B are defined.
The display of 3b can be changed so that the driver or the like can be alerted to slip or the like due to freezing of the road surface. Particularly, in the present embodiment, the pair of rotating members 13
Since the freezing of the road surface can be clearly indicated by the retroreflective surface portions 13a and 13b of A and 13B, the display can be enlarged.

However, in this embodiment, although the surfaces of the retroreflective surface portions 13a and 13b housed in the housing 2 are widened, the retroreflective surface portion 13a or the retroreflective surface portion 13b is used.
It is also possible to use only one of them. For example, if only the retroreflective surface portion 13a is used, it can be implemented as follows.

That is, the attachable housing 2, the rotatable rotatable member 13A disposed in the housing 2 and provided with the retroreflective surface portion 13a, and the rotatable member 13A attached to the rotatable member 13A, the freezing temperature of about The freeze display marker device can be provided with the temperature responsive driving means 17A for rotating and changing the rotating member 13A depending on the temperature.

Also in this embodiment, the display of the retroreflective surface portion 13a of the rotating member 13A can be changed with the freezing temperature of the road surface as a boundary, thereby prompting the driver or the like to pay attention to slip or the like due to freezing of the road surface. be able to.

By the way, the temperature-responsive driving means 7, 17A, 17B in the above embodiment are made of a shape memory alloy which changes according to the temperature change, but when the present invention is carried out, the temperature change of the bimetal or the like is performed. Therefore, a thermal responsive means can be used that can expect a physical variable. In particular,
When the freezing temperature of the road surface is to be changed suddenly at the boundary, it is preferable to use a thermal responsive means having a snap function such as shape memory alloy, bimetal, or trimetal.

Further, although the temperature-responsive driving means of each of the above-mentioned embodiments does not detect a temperature of 0 ° C. or lower, the temperature-responsive driving means of 0.
The marking device for freeze display, which is installed on the top of 8-1m,
A good freezing temperature detection effect was obtained by setting the temperature slightly higher than the freezing temperature of the surface due to the relationship between the temperature detection point and the temperature difference of the surface. However, traffic volume, mountainous areas, etc.
0 ° C depending on the installation environment such as the type of road surface and the time lag
Can be set to 0 ° C. or below 0 ° C. Further, the shape memory alloy having a hysteresis temperature of about 3 to 4 ° C., that is, a material that recovers at 4 to 5 ° C. was used.
Once the road surface freezes, even if the outside air temperature rises, the road surface temperature does not immediately rise and there is a time lag, so this is corrected with this hysteresis temperature. For example, it is desirable to use the hysteresis temperature in correspondence with the temperature rise between the road surface temperature that is frozen at night and the freeze is released and the outside air temperature in the morning.

The form that changes near the freezing temperature of the road surface may be either characters or figures.

Furthermore, the retroreflective surface can be formed as a small sphere, a prism surface, or the like, and coloring of reflected light can be performed by coloring the reflective surface or using a transparent body as a colored transparent member. Further, the retroreflection of the above-mentioned embodiment, although assuming that the incident angle and the reflection angle are parallel to each other like a transparent sphere, when implementing the present invention does not mean retroreflection in a narrow sense, It is self-evident that it can be replaced with a mirror surface whose incident angle and reflection angle are parallel to each other, and since there is no need for the incident angle and reflection angle to be exactly parallel, basically, most of the incident light is Is reflected as reflected light.

In the above-mentioned embodiment, the case of the housing 2 which can be attached to the column 1 has been described. However, when the present invention is carried out, there is no limitation that the column 1 must be attached, and the delineator itself or other It can also be attached directly or indirectly to the fixture of the above or the parapet of the bridge.

Further, although the above embodiment has been described on the premise that the inside of the housing 2 is sealed, the present invention is not limited to sealing the inside of the housing 2. Absent. However, in the case where the inside of the housing 2 is sealed, its life can be extended.

[0069]

As described above, the marking device for freeze display according to the invention of claim 1 is arranged in the attachable housing, and the front member having the front side retroreflective surface portion and the light transmitting portion provided on the front side thereof. And a rotation having a retroreflective surface different from that of the front member, which is rotatably attached to the back surface of the front member and is in an exposed state or a non-exposed state through the translucent portion of the front member when viewed from the front surface. A member, and a temperature-responsive driving means for rotationally changing the retroreflective surface of the rotating member into an exposed state or a non-exposed state depending on a temperature about a freezing temperature.
Since the temperature responsive driving means rotationally displaces the rotating member by the substantially freezing temperature, when the temperature becomes substantially the freezing temperature, the display can be changed by the retroreflective surface provided on one plane of the rotating member. Therefore, it is possible to notify the driver, the road administrator, or the like of the freezing of the road surface that occurs in winter without relying on an external power source.

The marking device for freeze display according to the invention of claim 2 is
A front member having a front-side retroreflective surface portion and a light-transmitting portion provided on a front surface side of a mountable housing, and a rear surface of the front member slidably attached to the front member. A sliding member that has a retroreflective surface that can be exposed through the light part and cannot be exposed from the front surface depending on the sliding position, and the retroreflective surface of the sliding member that is exposed by temperature around the freezing temperature A temperature-responsive driving means for slidingly changing the temperature into a possible or non-exposure state, and the temperature-responsive driving means slides and displaces the sliding member at a substantially freezing temperature. The display can be changed by a retroreflective surface provided on one flat surface of the member. Therefore, it is possible to notify the driver, the road administrator, or the like of the freezing of the road surface that occurs in winter without relying on an external power source.

The freeze display marker according to the invention of claim 3 is
A front member provided in a mountable housing and having a front side retroreflective surface portion provided on the front surface side; and a bending member provided with a retroreflective surface portion provided adjacent to the front side retroreflective surface portion and freely bendable. A temperature responsive driving means for changing the retroreflective surface of the bending member into a state in which the retroreflective surface of the bending member can be exposed or invisible depending on the temperature about the freezing temperature, and the temperature responsive driving means is displaced by the substantially freezing temperature. Therefore, it is possible to cause the retroreflective surface provided on the bending member to change its appearance with the substantially freezing temperature as a boundary. Therefore, it is possible to notify the driver, the road administrator, or the like of the freezing of the road surface that occurs in winter without relying on an external power source.

According to the fourth aspect of the present invention, there is provided the freeze-displaying marker device.
A rotatable pair of rotating members provided in a mountable housing and provided with a retroreflective surface portion, a connecting means for rotating the rotating members of the pair in a one-to-one relationship, and the rotating member. A temperature responsive driving means attached to the member, the temperature responsive driving means for rotatively changing the rotative member depending on the temperature about the freezing temperature, and the temperature responsive driving means rotatively displacing the rotary member by the substantially freezing temperature; When the freezing temperature is reached, the display of the retroreflective surface formed on at least one surface of the pair of rotating members and the back surface thereof can be switched. Moreover, the display surface can be enlarged. Therefore, it is possible to notify the driver, the road administrator, or the like of the freezing of the road surface that occurs in winter without relying on an external power source.

[Brief description of drawings]

FIG. 1 is a use perspective view showing a retroreflective operation state of a freeze display marker device according to a first embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of a freeze display marker device according to a first embodiment of the present invention.

FIG. 3 is an explanatory diagram of a normal state display (a) and a road surface frozen state display (b) viewed from the front of the freeze display marker device according to the first embodiment of the present invention.

FIG. 4 is an explanatory view seen from the front (a) and the back (b) of the freeze display marker device according to the first embodiment of the present invention.

FIG. 5 is a vertical cross-sectional view of a freeze display marker device according to a second embodiment of the present invention.

FIG. 6 is a front view of the freeze display marker device according to the second embodiment of the present invention, as viewed from the back surface.

FIG. 7 is an explanatory diagram of a normal state display (a) and a road surface frozen state display (b) viewed from the front of the freeze display marker device according to the second embodiment of the present invention.

FIG. 8 is a vertical cross-sectional view of a freeze display marker device according to a third embodiment of the present invention as viewed from the front.

FIG. 9 is an explanatory view of a vertical cross section of a freeze display marker device according to a fourth embodiment of the present invention.

[Explanation of symbols]

 2 housing 3 front member 3a front side retroreflective surface portion 3b transparent portion 4 rotating member 4a retroreflective surface portion 4b non-reflective portion 7 temperature responsive driving means 13a, 13b retroreflective surface 13A, 13B retroreflective member 17A, 17B temperature responsive driving means

Claims (4)

(57) [Claims] 1. A mountable housing, a front member disposed in the housing and having a front side retroreflective surface portion and a light transmitting portion provided on the front surface side thereof, and rotatably attached to the back surface of the front member. From the front
Seen through the translucent part of the front member, the exposed state or the non-exposed state
A rotating member having a retroreflective surface different from that of the front member in an exposed state, and rotating the retroreflective surface of the rotating member into an exposed state or a non-exposed state by a temperature around a substantially freezing temperature. A freeze display marker device comprising a temperature-responsive driving means. 2. A mountable housing, a front member provided with a light-transmitting portion disposed in the housing, and a light-transmitting member of the front member slidably mounted on the back surface of the front member when viewed from the front. The sliding member has a retroreflective surface that can be exposed through the part and cannot be exposed from the front surface depending on the sliding position, and the retroreflective surface of the sliding member can be exposed by the temperature around the freezing temperature Alternatively, a freeze-display marker device comprising a temperature-responsive driving means for slidingly changing the condition to a non-exposure state. 3. A mountable housing, a front member disposed in the housing and having a front side retroreflective surface portion provided on the front side, and a retroflexible member adjacent to the front side retroreflective surface portion and arranged to be bendable. A bending member provided with a reflecting surface portion; and a temperature-responsive driving means for changing the retroreflective surface of the bending member into a state in which it can be exposed or cannot be exposed depending on the temperature about the freezing temperature. Characterizing device for freeze display. 4. A mountable housing, a rotating member arranged in the housing and provided as a rotatable pair provided with a retroreflective surface portion, and rotation between the pair of rotating members. And a temperature-responsive driving unit that is attached to the rotating member and that changes the rotating member by a temperature around a substantially freezing temperature. Marking device.