JPH08151610A - Marker device and its snow-shed hood - Google Patents

Abstract

PURPOSE: To improve the recognition of a marker by using the synergetic effect of both light source beam and reflected light. CONSTITUTION: A reflective intensity mirror 22 formed with three reflection surfaces arranged in a right-angled triangularly conical shape and a light source (LED) 13 arranged at the optical axis of the reflective intensity mirror 22 are provided. Incident light is recursively reflected to the 180 deg. opposite direction by the reflective intensity mirror 22 and the light source 13 is lit and directed to the front direction or reflected by the reflective intensity mirror 22 to emit light, so that reflective intensity light and light source beam are synergetically effected and then highly recognized marking operation is allowed. The area of the reflective intensity mirror 22 can be easily be made larger and a reflective intensity mirror 21 constructed by plural reflective intensity mirrors 22 arranged in the same plane in a mutually connected condition provides reflective intensity effect over a wide area.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a marking device for displaying by utilizing reflected light and light from a light source, and more particularly to a marking device mainly composed of a retroreflective mirror.

[0002]

2. Description of the Related Art Conventionally, as a road marking device, a device using a retroreflector has been proposed. That is, as is well known, a reflector composed of a triangular pyramid having a right apex angle or a reflector composed of a prism can reflect incident light in a direction opposite to 180 degrees. Therefore, if it is placed at the road boundary such as a road shoulder as a road sign, the light from the headlamps of the automobile can be reflected toward the driver, and the driver can recognize the road boundary and contribute to safe driving. can do. Compared to those using a light source, such a reflective sign does not require a power source, but since it is a passive structure that uses reflected light, the surroundings are somewhat dark like in cloudy weather, but in automobiles. In many cases, the headlamps of the above are not turned on, the recognition ability is limited.

On the other hand, a marking device using a light source such as a light bulb or a strobe has been proposed. Since this type of marker lamp actively emits light, it is effective in enhancing the recognizability to the driver. However, if the amount of emitted light is small, the recognizability is low, and it is difficult to obtain a predetermined effect. On the contrary, when the light intensity is increased, the power consumption increases, and in order to realize long-term use, a commercial power source must be used, and the indicator light is connected with an electric cord to connect the power source. It is necessary to do it, and the equipment of the indicator light becomes large-scale.

In order to solve such a problem, there has been proposed a marking device using both reflected light and light from a light source. For example, in Japanese Utility Model Application Laid-Open No. 57-205185, a light emitting element such as an LED is used as a light source, and light of this light emitting element is emitted through a transparent plate to perform a labeling function. In addition, a retroreflective lens is arranged around the light-transmitting plate, and a labeling action is performed by the reflected light reflected by the retroreflective lens. in this way,
By using the reflected light and the light from the light source in combination, the proportion of the labeling action borne by the light emitting element is reduced to reduce the power consumption in the light emitting element, while the labeling action of the light emitting element and the retroreflective lens is performed. This makes it possible to increase the recognition of the marking device as a whole.

[0005]

However, since the light emitting element and the retroreflective lens are simply provided side by side in the one described in the above-mentioned publication, the light emitting element and the retroreflective lens are independently labeled. However, there is a problem in that a large synergistic effect of the labeling action due to the interaction between the two cannot be obtained. In particular, since the light emitting element simply emits light through the transparent plate, it is possible to adjust the light distribution characteristics by the lens step provided on the transparent plate. The degree of freedom in adjusting diffusion is low, and there is a limit to enhancing the recognition effect. Also,
Since the retroreflective lens is formed by minute lens steps, increasing the lens area to increase the marking effect also increases the number of lens steps, making it difficult to manufacture the mold and the mold used for manufacturing. Become.

[0006] Further, in the conventional device, since a hood or the like for covering the surface glass of the sign device is not provided, snow or ice adheres to the surface glass during snowfall, and the light emitting function or the light reflecting function of the sign device is snowed. There is also a problem that normal labeling operation may not be ensured in some cases because it is blocked by ice and ice.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a labeling device which can obtain the synergistic effect of the labeling action of the light from the light source and the reflected light to enhance the recognizability of the label. Another object of the present invention is to provide a marker device capable of reducing the power consumption of a light source and adjusting the light condensing property and the diffusing property to enhance the recognizability of a marker. Especially. Further, another object of the present invention is to provide a marking device which can enlarge the area of the retroreflector and easily manufacture the retroreflector. Another object of the present invention is to provide a snow hood that prevents snow from adhering to the marking device and prevents deterioration of the marking function due to snow adhesion.

[0008]

The marking device of the present invention comprises a retroreflector composed of three reflecting surfaces arranged in the shape of a right-angled triangular pyramid and an optical axis position of the retroreflector. And a light source.

Here, a lens is arranged on the front side of the retroreflector, and a condenser lens for condensing the light of the light source is formed on this lens, and a plurality of retroreflectors are arranged on the same plane. It is preferable that the plurality of retroreflecting mirrors are arranged in a concatenated state, and that the directions of the three reflecting surfaces of the retroreflecting mirrors are different. Further, it is preferable that the retroreflector has a regular hexagonal front shape, and a standing wall faced parallel to the optical axis is formed between the three reflecting surfaces forming each retroreflector.

For example, as a preferred configuration of the present invention,
It includes a body that houses the retroreflector and the light source, a case that is integrally formed with the body to house the battery therein, and a lens that faces the retroreflector and the light source and is attached to the front opening of the body. The configuration.

Further, the snow hood of the present invention can be detachably attached to the marking device and is fitted with a fitting support part fitted into the body or case of the marking device, and the fitting support part. And a hood portion that covers at least the lens provided on the marking device when the hood portion is attached to the marking device.

[0012]

In the marker device of the present invention, the retroreflecting mirror causes the incident light to be retroreflected in the opposite direction by 180 degrees, and at the same time, the light source is turned on to emit the light in the front direction, whereby the retroreflection is performed. The retroreflective light from the mirror and the light emitted from the light source act synergistically to enable highly recognizable labeling operation. In particular, the light from the light source can be reflected by using the retroreflecting mirror, and the light can be emitted to a wide range with a small number of light sources, and the power consumption can be reduced accordingly. Further, since the retroreflecting mirror is composed of three reflecting surfaces, it is easy to increase the reflection area as compared with the retroreflecting lens (prism), and has a very highly recognizable retroreflection function. Furthermore, by arranging a plurality of retroreflecting mirrors in a concatenated state on the same plane, the retroreflection effect can be obtained over a wide area, and the recognizability is further improved.

Further, by attaching the snow hood to the marking device, it is possible to prevent snow from adhering to the marking surface of the marking device during snowfall and hindering the marking operation such as light reflection and irradiation. Ensure sign motion.

[0014]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an external view of an embodiment of the marking device of the present invention, FIG. 2 is a partially exploded perspective view thereof, and FIG. 3 is a vertical sectional view of an assembled state. The labeling device main body 1 includes a cylindrical case 2, a circular deep dish-shaped body 3 which is detachably formed on an upper end of the case 2, and a circle attached to a front opening of the body 3. It is composed of a plate-shaped lens 4. The case 2 and the body 3 can be attached and detached by, for example, a screw 5, and when the body 3 is detached, a dry battery 6 as a power source can be housed in the case 2. A waterproof O-ring 10a is inserted between the body 3 and the case 2. Further, on the back surface of the body 3, a vent hole (not shown) that communicates the inside and the outside of the body, a switch 7 for turning the switch on and off by a manual push operation, and a window for lighting a light sensor described later. 8 is opened. The switch 7 has a rubber cover to ensure waterproofness. A transparent cover 9 is provided on the daylighting window 8 as an O-ring 10b.
And the light-collecting window 8 is liquid-tightly sealed.

Inside the body 3, a circular substrate 11 is fixed along the inner bottom surface with screws 12. A plurality of light emitting devices (LEDs) are used as a light source on the front surface of the substrate 11.
13 is mounted, and an optical sensor (photodiode) 14 and a circuit section 15 are mounted on the rear surface. The LED
13 is arranged in a plane corresponding to the shape of a retroreflective mirror body described later. Further, the optical sensor 14 is mounted at a substantially central position on the back surface side of the substrate 11 and faces the lighting window 8 of the body 3. The circuit section 15 is configured to include various electronic components so as to form an electric circuit with the dry battery 6, the switch 7, the LED 13 and the optical sensor 14 housed in the case 2, and the output status of the optical sensor 14 is determined. Accordingly, the LED 13 is energized to cause the LED 13 to emit light.

A retroreflective mirror body 21 is arranged at a position on the front side of the substrate 11 in the body 3 and is attached to the substrate 11 or the body 3. In this example, the retroreflective mirror body 21 is fixedly supported on the substrate 11 by adhesion. The retroreflective mirror body 2
As shown in the front view of FIG. 4 (a), 1 is a resin molded product, and aluminum is vapor-deposited on the surface of the resin to form the surface as a reflecting surface. In the configuration, they are connected to each other. As shown in FIG. 4 (b), each of the retroreflecting mirrors 22 basically has three reflecting surfaces 23a, which intersect at right angles with each other at their vertices.
It is configured as a triangular pyramid having 23b and 23c. However, here, as indicated by the chain line in FIG.
By forming the front shape of the regular hexagon, each reflecting surface 23
A partition wall surface 24 oriented parallel to the optical axis is formed at a boundary portion of a to 23c and a portion connected to each reflection surface. Therefore, the retroreflective mirror body 21 has a configuration in which these retroreflective mirrors 22 are arranged in a honeycomb shape.

Further, in this embodiment, in each of the retroreflecting mirrors 22, the directions of the ridges of the three reflecting surfaces intersecting at an angle of 120 degrees when viewed from the front are made different in each of the retroreflecting mirrors. In this embodiment, three ridge lines are directed to each vertex of the regular hexagon, and three ridge lines are oriented perpendicular to each side of the regular hexagon. In this case, in the former case, one ridgeline is oriented upward or downward, and in the latter case, one ridgeline is oriented leftward or rightward.

That is, FIG. 5 (a) is a perspective view of a retroreflecting mirror 22A in which one ridgeline of the former is directed upward and the other two ridgelines are directed obliquely downward left and right at an angle of 120 degrees. Is. In this retroreflective mirror, a vertical wall surface 24 is formed on each of the three reflecting surfaces 23a to 23c at the upper apex and the left and right lower apexes of the regular hexagonal opening. Further, FIG. 5B is a perspective view of the retroreflecting mirror 22B in which one ridgeline of the latter is oriented leftward and the other two ridgelines are oriented up and down 120 ° rightward. In this retroreflective mirror, vertical wall surfaces 24 are formed between the three reflecting surfaces 23a to 23c at the intersections of the three ridge lines and the regular hexagonal opening sides.

A triangular hole 25 is formed by cutting a part of the top of each retroreflective mirror 22, and a plurality of LEDs 13 mounted on the substrate 11 are provided in the hole 25, respectively. It is attached to the substrate 11 after being positioned so as to be arranged. In addition, the retroreflective mirror 2
A circular flange 26 is integrally formed around the peripheral portion of the body 1 in accordance with the shape of the body 3, and a short cylindrical sleeve 27 protruding rearward is integrally formed at the peripheral edge of the flange 26. The sleeve 27 extends along the inner peripheral surface of the body 3.

A seal groove 3a is formed along the opening edge in the front opening of the body 3, and a seal leg portion 4a provided on the peripheral portion of the lens 4 is formed in the seal groove 3a.
And the lens 4 is integrally attached to the body 3 in a state where the inside of the body 3 is sealed by the sealing agent filled in the seal groove 3a. The lens 4 is formed of a transparent resin material, and a convex lens-shaped collecting member is formed on an inner surface of the lens 4 at a portion corresponding to a substantially central position of each retroreflecting mirror 22, that is, a portion corresponding to an optical axis of each LED 13. The optical step 31 is integrally formed. Further, on the outer peripheral edge of the lens 4,
An annular peripheral rib 4b is formed so as to project forward along the circumference. The peripheral edge rib 4b is provided with a cutout 4c at a part of its lower end so that water or the like does not collect on the inner edge of the peripheral edge rib 4b. And the entire surface is clear painted.

In the labeling device having this structure, the dry cell 6, the LED 13, the optical sensor 14, and the circuit portion 15 constitute a circuit (not shown) as described above, so that the optical sensor 14 passes through the daylighting window 8 and is predetermined. When the above brightness is detected, the circuit unit 15 is turned off. When the outside becomes dark and brightness above a predetermined level is not detected, the circuit unit 15 is turned on and the dry battery 6 is used as a power source to cause the LED 13 to emit light. To be operated. The light emitted from this LED 13 is
It is arbitrary to design each LED 13 to have an arbitrary light emission form such as continuous light emission or blinking.

Therefore, when the LED 13 emits light, as shown in FIG. 6, most of the emitted light is emitted along the optical axis and is collected by the collecting step 31 provided in the lens 4. And is emitted as a beam light beam. Also,
The rest of the emitted light is emitted laterally, and the light is emitted from the three reflecting surfaces 23 a to 23 a of the retroreflecting mirror 22.
It is reflected by 3c, then passes through the lens 4 and is emitted. At this time, each retroreflecting mirror 22 is formed with a standing wall surface 24 together with a reflecting surface, and a part of the light is also reflected by this standing wall surface 24.
Does not have a retroreflective function, the reflected light is reflected in the peripheral direction, and the light from the LED 13 can be emitted in a wider range.

Therefore, a part of the light emitted from the LED 13 is emitted in the form of a beam having a relatively small luminous flux width, and the other part of the light corresponds to the area of the reflecting surfaces 23a to 23c of the retroreflecting mirror 22. A light beam having a relatively large width is emitted, and a part of the other light is emitted toward the peripheral portion by the standing wall surface 24. These lights are the lens 4 at the same time
Since the light having a small luminous flux width is emitted to the far side, the visibility from a long distance is enhanced, and other light illuminates substantially the entire surface of the lens 4, and the visibility from a medium distance to a short distance is recognized. Can be increased. As a result, the degree of recognition in the marker device can be increased, while the marker effect can be achieved by using a smaller number of LEDs 13 than the area of the lens 4, and power consumption can be reduced.

By reducing the power consumption in this way,
As described above, even when the dry battery 6 is used as the power source, the labeling operation can be performed for a long time, and the wiring when the commercial power source or the like is used for the labeling device becomes unnecessary. In addition, the marking device can be unitized, can be carried, and facility work and maintenance of the marking device can be facilitated. For example, as shown in FIG. 1, a cylindrical support S having an open upper end is provided upright at a location where the marker is installed, and the case 2 of the marker is inserted into the upper opening. Then, the marking device can be easily installed.

Further, as shown in FIG. 6, the switch 7
When the LED 13 does not emit light in the off state, when light from the headlamp of the automobile enters the lens 4 of the marking device, the light transmitted through the lens 4 is reflected by each retroreflecting mirror 22.
In, the light is reflected in the direction of 180 degrees by the retroreflection function of the three reflecting surfaces 23a to 23c, and is emitted through the lens 4 again. The incident light is reflected by the flange 26 around the retroreflective mirror 21 at an emission angle equal to the incident angle, and is emitted through the lens 4. As a result, most of the incident light is reflected toward the driver of the automobile. In this case, since the retroreflective mirror 22 or the retroreflective mirror body 21 can be easily formed with a large area as compared with the conventional retroreflective prism, retroreflecting can be performed in a state where the light flux width is large. You can improve your sex.

Further, in the retroreflective operation, since the angles of the three reflecting surfaces 23a to 23c constituting each retroreflecting mirror are oriented in different directions, the directivity of the retroreflecting is changed in the vertical and horizontal directions. Can be made uniform in the circumferential direction. That is, in the retroreflective operation, it is generally possible to reflect the reflected light at an angle of 180 degrees even if the light is obliquely incident on the optical axis as shown in FIG. 7A. When the retroreflecting mirror is cut by a certain surface including the optical axis, the three reflecting surfaces 23a to 23c are not necessarily symmetrical with respect to the optical axis, and in this case, the reflecting surfaces 23a and 23b are symmetrical. However, an asymmetric reflection intensity characteristic depending on the incident angle occurs. FIG. 7B is a diagram showing that situation, and when the retroreflecting mirror 22 is cut along a plane including one ridge, the reflecting surface 2 is asymmetric with respect to the optical axis.
In 3a and 23b, the characteristics of the reflection intensity depending on the incident angle of light are biased.

However, in the above-described marking device of this embodiment, the reflecting surfaces 23 of the plurality of retroreflecting mirrors 22 arranged in series are arranged.
Since a to 23c are directed in different directions, the characteristics of the reflection intensity described above are biased in the individual retroreflecting mirrors 22, but the bias of each retroreflecting mirror is different in each direction. As seen from the whole of the retroreflective body 21, each of them is averaged to correct the deviation of the reflection intensity. Therefore, a uniform reflection intensity can be obtained from any direction of the marking device.

Here, the condensing step formed on the lens 4 is Fresnel step 32 as shown in FIG. 8 (a).
You may form with. Alternatively, as shown in FIG. 8B, an inner lens 4A is inserted between the retroreflecting mirror 22 and the lens 4, and a Fresnel step 33 (or a light collecting step) is formed at a position corresponding to the inner lens 4A. It may be configured. In this case, Fresnel steps 32, 33
To form the lens 4 or the inner lens 4
A condensing effect can be obtained without increasing the thickness of each lens of A, which is advantageous in reducing the thickness and weight of the marker device.

Further, as shown in FIG. 9, each retroreflecting mirror may be formed as a retroreflecting mirror 22 'having a square front shape. In this case, a plurality of retroreflecting mirrors 22 are formed. 'Can be continuously arranged in a grid pattern, which is effective when applied to a so-called matrix drawing device. Further, at the same time, by making the shape including the back surface of the retroreflector into a cube or a rectangular parallelepiped as shown,
It becomes easy to attach each retroreflective mirror to a mounting panel or the like by utilizing its flat back surface.

Further, as a light source provided on each retroreflective mirror,
Two or three or more light emitting elements may be provided. FIG.
In the case of 0, three LEDs 13R, 13G and 13B having different emission colors such as red, green and blue are arranged. Then, the LEDs 13R, 13G, and 13B are selectively or simultaneously caused to emit light, so that it is possible to perform a labeling operation using various colored lights. In this case, each LED 13
By installing the optical axes of R, 13G, and 13B in different directions, the directions in which the light from each LED is emitted from the marking device can be different, and the marking color can be changed depending on the viewing angle. It can be configured, and the recognizability can be further enhanced.

Further, as shown in FIG. 11, a thin plate-shaped retroreflective lens 41 may be attached to the front surface of the retroreflective mirror body 21 in the region of the flange 26 where the retroreflective mirror 22 is not formed. This retroreflective lens is shown in FIG.
As shown in the enlarged cross-sectional view taken along the line A, a red transparent resin is formed into a resin-molded plate shape, and a large number of microscopic retroreflective prisms 42 are arranged on the back surface thereof and bonded with an adhesive 43. is there. The retroreflective prism 42 has a triangular pyramid shape like the retroreflective mirror 22 described above, and has its apex protruding toward the back surface. Further, the outer shape of the retroreflective lens 41 corresponds to the circular outer shape of the retroreflective mirror body 21, and the inner shape thereof corresponds to the honeycomb shape of the retroreflective mirror 22 to form the flange 26. They are formed in the same shape, and the back surface side thereof is attached to the front surface of the flange 26 with an adhesive.

Therefore, when the surface of the retroreflective lens 41 is irradiated with light from the vehicle, red light is reflected from the retroreflective lens 41 by the retroreflective action of light shown in FIG. Flange 2 around the mirror 22
Area 6 will be recognized in red. Therefore,
Since the retroreflective mirror 22 is recognized in a state different from that in which the white or light yellow light of the headlight of the automobile is reflected, the contrast of the color in the marking device is generated and the recognition is further enhanced. Is possible. In addition, LED13
If the emission color of is properly set, the recognizability can be further enhanced by the combination of the emission color of the LED 13 and the red color of the retroreflective lens 41.

FIG. 13 is a perspective view of a snow protection hood 51 applied to the marking device of the above embodiment. When the marking device is installed on a road in a cold region, snow may adhere to the surface of the lens 4 due to snowfall, and the adhesion of such snow may impair the operation of the marking device. Therefore, the marking device is provided with a detachable snow hood. The snow hood 51 is formed by molding resin or the like, and as shown in the sectional structure of FIG. A hood portion 53 formed along the upper edge of the back cover portion 52 and protruding straight forward, and a hood portion provided below the back cover portion 52 and fitted to the upper end portion of the case 2 of the labeling device from the outside. And the fitting support portion 54.

The back cover portion 52 is formed in a circular container shape in which the middle belt portion is projected slightly rearward from the peripheral portion according to the unevenness of the back surface shape of the body 3 of the marking device, and the central portion thereof is formed. A circular hole 55 is formed so as to expose the lighting window 8 and the switch 7 of the marking device. Further, the hood portion 53 is configured such that the upper end portion thereof is protruded most forward, the protrusion amount is gradually reduced toward both sides from here, and the hood portion 53 is terminated in the vicinity of a substantially vertical center position of the body 3. ing. In addition, a cross section of the inner surface of the hood portion 53 is L
A hook piece 56 having a V shape is provided so as to project, and the hook piece 56 is configured to be engaged with the peripheral rib portion 5b of the lens 4 at its front edge.

The fitting support portion 54 has a pair of arcuate pieces 57 curved outward with a radius of curvature slightly smaller than the diameter of the case 2 so as to project forward from both sides of the lower portion of the back cover portion 52. In addition, each tip is bent slightly outward. Each arc piece 57 is elastically deformed and fitted into the upper portion of the case 2 from the outside, and when fitted, is elastically held in the upper portion of the case 2 by its elastic force.

Therefore, when this snow protection hood 51 is used, the hook piece 56 provided on the hood portion 53 is first hooked on the upper portion of the peripheral rib portion 5b of the lens 4 before mounting the rear cover portion. 52 is the body 3 of the marking device
When the fitting support portion 54 is fitted on the upper part of the case 2 while covering the upper part of the case 2, the pair of arc pieces 57 of the fitting support part 54 elastically clamps the upper part of the case 2 from the back side, and as shown in FIG. The gripping force allows the snow protection hood 51 to be attached to the marking device. At this time, the snow hood 51
Since the upper part of is fixed to the upper edge part of the lens 4 by the hook piece 56, the hood part 53 is not pushed backward by wind or the like, and firm attachment is possible.

When this snow protection hood 51 is attached to the marking device, snow is accumulated on the hood portion 53 during snowfall, so that snow is prevented from adhering to the surface of the lens 4 and the above-mentioned marking operation is performed. Will not be an obstacle. Since the hood portion 53 projects in the optical axis direction of the marking device, it does not hinder the irradiation and reflection of light in the above-described marking operation. Furthermore, since the daylighting window 8 and the switch 7 are exposed from the circular hole 55 provided in the back cover part 52, the automatic lighting operation and the switch operation of the marker device are secured.

In addition, during periods other than the snowfall season, the snow hood can be removed from the marking device by the reverse operation of the above-described mounting operation, so that the snow hood is deteriorated by the solar heat in the summer and its life is reduced. Can be prevented from becoming short.

The design of the shape of the hood portion of the snow hood and the structure of the fitting support portion can be changed appropriately.
Also, the back cover part is not particularly required,
Although it is possible to design the hood portion to have the fitting support portion directly, it is possible to prevent the snow from directly adhering to the body by providing the back cover portion that covers the body of the marking device as in the above embodiment. Therefore, it is possible to mitigate that the temperature of the internal circuit is lowered and the emission characteristics and the like are lowered. It is also effective in protecting the body from external forces.

[0040]

As described above, according to the present invention, a retroreflector composed of three reflecting surfaces arranged in the shape of a right-angled triangular pyramid, and a light source arranged at the optical axis position of the retroreflector. Since the marker device is configured with, by retroreflecting the incident light by the retroreflecting mirror, and by turning on the light source together with this, the retroreflecting light by the retroreflecting mirror and the light emitted from the light source are emitted. Act synergistically to enable highly recognizable labeling operation. In particular, the light from the light source can be reflected by using a retroreflecting mirror, and the light can be emitted to a wide range with a small number of light sources, and the power consumption can be reduced accordingly. Further, since the retroreflecting mirror is composed of three reflecting surfaces, it is easy to increase the reflection area as compared with the retroreflecting lens (prism), and has a very highly recognizable retroreflection function.

Further, since the lens is arranged on the front side of the retroreflecting mirror and the condenser lens for condensing the light of the light source is formed on this lens, the light of the light source can be condensed and emitted, and it can be seen from a distance. The recognizability of the marking device can be improved.

Furthermore, since a plurality of retroreflecting mirrors are arranged in a concatenated state on the same plane, the retroreflection effect can be obtained over a wide area, and the recognizability is further improved.

Further, since the plurality of retroreflective mirrors are different in the directions of the three reflecting surfaces constituting the retroreflective mirror, the directivity of each retroreflective mirror is different and the plurality of retroreflective mirrors are different. The overall retroreflective action of the mirror allows for a uniform marking action in all directions.

Further, since the retroreflector has a regular hexagonal shape in front and three standing reflecting surfaces forming each retroreflector, a standing wall oriented parallel to the optical axis is formed. Light is reflected toward the periphery of the marking device on the vertical wall,
This is effective in expanding the recognition angle of the sign.

Further, a snow hood detachably attached to the marking device is provided, and the snow hood is fitted to a body or case of the marking device and a fitting support portion. A hood portion that is integrally formed with the support portion and covers at least an upper portion of a lens provided in the marking device when attached to the marking device allows the snow to be generated at any time such as during snowfall. It is possible to equip the marking device with a shelter hood, and when the snow hood is attached to the marking device, snow adheres to the marking surface of the marking device and interferes with marking operations such as light reflection and irradiation. It is possible to prevent and ensure a reliable marking operation in the marking device.

[Brief description of drawings]

FIG. 1 is an external perspective view of an embodiment of a marking device of the present invention.

FIG. 2 is a partially exploded perspective view of the marker device of FIG.

FIG. 3 is a side view in which a part of the marking device of FIG. 1 is cut away.

FIG. 4 is a front view of a retroreflective mirror and a diagram showing a basic configuration of each retroreflective mirror.

FIG. 5 is a perspective view showing two examples of individual retroreflective mirrors used in this embodiment.

FIG. 6 is a schematic cross-sectional view for explaining the operation of the retroreflector.

FIG. 7 is a diagram for explaining the operation and directivity of the retroreflector.

FIG. 8 is a diagram showing a modification of the light collecting step.

FIG. 9 is a perspective view showing a modified example of the retroreflective mirror.

FIG. 10 is a schematic configuration diagram showing another example of the labeling device.

FIG. 11 is a perspective view of an embodiment in which a retroreflective lens is attached to a retroreflector.

12 is an enlarged cross-sectional view of the retroreflective lens used in FIG. 11 taken along the line AA.

FIG. 13 is a perspective view of a snow hood.

14 is a vertical cross-sectional view of the snow hood of FIG.

FIG. 15 is a perspective view showing a state in which the snow hood is attached to the marking device according to the embodiment.

[Explanation of symbols]

 2 Case 3 Body 4 Lens 11 Substrate 13 LED (Light Emitting Element) 21 Retroreflective Mirror 22 Retroreflective Mirror 23a-23c Reflective Surface 24 Standing Wall Surface 31 Condensing Step 32, 33 Fresnel Lens 41 Retroreflective Lens 51 Snow Shaft Hood 52 Back cover part 53 Hood part 54 Fitting support part 56 Hook piece

Claims (7)

[Claims] 1. A marker device comprising: a retroreflective mirror composed of three reflective surfaces arranged in the shape of a right-angled triangular pyramid; and a light source disposed at an optical axis position of the retroreflective mirror. . 2. A lens is arranged in front of the retroreflector,
The marker device according to claim 1, wherein a condensing lens that condenses light from the light source is formed on the lens. 3. The marker device according to claim 1, wherein a plurality of retroreflecting mirrors are arranged in a connected state on the same plane. 4. The marker device according to claim 3, wherein the plurality of retroreflective mirrors are different in the directions of the three reflective surfaces constituting the retroreflective mirror. 5. The retroreflecting mirror has a frontal shape of a regular hexagon, and standing walls oriented parallel to the optical axis are formed between the three reflecting surfaces of each retroreflecting mirror. Or 4 labeling devices. 6. A body that houses a retroreflective mirror and a light source, a case that is formed integrally with the body to accommodate a battery therein, and a body opening facing the retroreflective mirror and the light source. And a lens to be worn. 7. A detachable attachment to the marking device,
A fitting support portion that is fitted to the body or case of the marking device, and a lens that is integrally formed with the fitting support portion and is attached to the marking device at least above the lens provided in the marking device. A snow hood for a marking device, comprising: a hood portion that covers the hood portion.