JP7439725B2 - Industrial vehicle notification device - Google Patents

Description

The present invention relates to a notification device for an industrial vehicle.

For example, in order to facilitate the work of a worker using an industrial vehicle, the industrial vehicle is sometimes provided with a notification device that notifies the worker of some kind. The notification device is described in Patent Document 1, for example. Some of such notification devices include a base that is attached to a vehicle body, a light emitter provided on the base, and a lens having an exit surface that emits light from the light emitter. Then, the operator determines whether or not the light of the light emitting body is emitted from the output surface, thereby confirming whether any notification is being sent from the notification device. In this manner, the notification device emits light from the light emitting body from the output surface in order to notify the operator of something.

Utility Model Publication No. 5-72572

By the way, when the worker determines whether or not the light of the light emitting body is emitted from the emission surface, the background of the notification device comes into the worker's field of vision. At this time, if the difference in brightness between the color of the light emitted from the emitting surface and the color of the background of the notification device is small, even if the light of the light emitting body is emitted from the emitting surface, the worker cannot emit light from the emitting surface. It is difficult to notice that the body's light is being emitted. Therefore, it may be difficult for an operator to determine whether or not the light from the light emitter is being emitted from the emission surface.

A notification device for an industrial vehicle that solves the above problem includes a base attached to a vehicle body, a light emitter provided on the base, and a lens having an output surface that emits light from the light emitter. The device is provided with a color that extends along the outer edge of the output surface and has a lower brightness than the color of the light emitted from the output surface when the output surface is viewed from outside the output surface. It is characterized by having a dark colored part.

According to this, when the output surface is viewed from outside the output surface, the dark colored portion extending along the outer edge of the output surface emphasizes the boundary between the output surface and the background of the notification device. Therefore, the operator can determine whether or not the light of the light emitter is being emitted from the emission surface while comparing the color of the emission surface and the color of the dark color portion. Therefore, it becomes easier to determine whether or not the light of the light emitting body is emitted from the exit surface of the lens.

In the above-mentioned notification device for an industrial vehicle, the lens includes a front lens portion disposed at a position facing the surface of the base where the light emitter is provided, and a cylindrical lens side surface disposed at a position surrounding the light emitter. The exit surface has a front exit surface formed by the front surface of the lens, and a side exit surface formed by the side surface of the lens and extends in a direction intersecting the front exit surface. , the dark-colored portion may partition the front emission surface and the side emission surface.

According to this, the dark color portion emphasizes the boundary between the front emission surface and the background of the notification device. Therefore, even when the operator views the notification device from a direction facing the front emission surface, for example, it becomes easier for the operator to determine whether or not the light of the light emitting body is emitted from the front emission surface. Further, according to this, the dark colored portion emphasizes the boundary between the side emission surface and the background of the notification device. Therefore, for example, even when the operator views the notification device from a direction facing the side emission surface, it becomes easy to determine whether or not the light of the light emitting body is emitted from the side emission surface. Therefore, the worker can check from various directions whether any notification is being sent from the notification device.

In the notification device for an industrial vehicle, at least a portion of the dark-colored portion may protrude beyond the emission surface.
According to this, when the notification device comes into contact with an object, the object tends to come into contact with the dark-colored portion that protrudes from the emission surface. Therefore, damage to the output surface due to contact with an object can be suppressed.

In the notification device for an industrial vehicle, the color of the output surface when viewed from outside the output surface may be lower in brightness than the color of the light emitted from the output surface.
According to this, for example, compared to a case where the color of the output surface and the color of the light emitted from the output surface when viewed from outside the output surface are similar in brightness, When the light of the light emitter is emitted from the light emitter, the color of the emission surface and the color of the light emitter can be clearly distinguished. Therefore, when the light of the light emitting body is emitted from the light emitting surface, the operator can determine whether the light of the light emitting body is emitted from the light emitting surface of the lens by comparing the color of the light emitting surface and the color of the light emitting body. This makes it easier to notice whether the light emitting body is emitting light from the exit surface of the lens or not.

In the above-mentioned notification device for an industrial vehicle, the lens has an entrance surface that is located on the opposite side to the exit surface in the thickness direction of the lens and on which light from the light emitting body enters, A diffusion portion may be provided between the surface and the exit surface to diffuse the light incident on the entrance surface.

According to this, the light from the light emitter is diffused by the diffusion section after being incident on the incident surface, and the light diffused by the diffusion section is emitted from the output surface. Therefore, compared to the case where the light from the light emitter is emitted from the output surface without being diffused, the entire output surface appears to emit light uniformly. Therefore, it becomes easier for the operator to notice that the light of the light emitting body is emitted from the light emitting surface, and it becomes easier to determine whether the light of the light emitting body is emitted from the light emitting surface of the lens.

In the above notification device for an industrial vehicle, the base has a rectangular shape when viewed from above, and includes a mounting wall to which the light emitting body is attached, four side walls erected from an outer periphery of the mounting wall, and the mounting wall. a chamfered portion located at at least one of the four corners of the mounting wall and connecting the adjacent side walls along the outer periphery of the mounting wall, the chamfered portion supplying power to the light emitting body. It may have a wire outlet through which the wire is drawn out.

For example, if a wire outlet is provided on one of the side walls of each notification device, and two notification devices are arranged so that the side walls provided with the wire outlet face each other, there is a gap between the two notification devices. It is necessary to leave a space for arranging the wires pulled out from the wire outlet. On the other hand, if the two notification devices are arranged so that the side walls having respective wire outlet ports do not face each other, the wire arrangement may become complicated when the wires drawn out from the respective wire outlet ports are grouped together.

Therefore, by providing the wire outlet in the chamfered portion, there is no need to leave a space between the side walls of adjacent notification devices for arranging the wires. Further, by arranging the respective notification devices so that the respective wire outlet is adjacent to each other, it becomes easier to gather the electric wires of each notification device at a position close to the wire outlet. Therefore, it is possible to reduce the distance between the notification devices and to prevent the arrangement of the electric wires from becoming complicated.

According to the present invention, it is possible to provide a notification device for an industrial vehicle in which it is easy to determine whether or not the light of the light emitting body is emitted from the exit surface of the lens.

The whole forklift truck schematic diagram in an embodiment. The perspective view which shows the state where a notification device was attached to the pillar. FIG. 3 is an exploded perspective view of the notification device. A perspective view of a notification device. FIG. 2 is a plan view of a notification device. A sectional view taken along line 6-6 in FIG. 5. The figure for explaining the positional relationship of two notification devices. The figure for explaining the positional relationship of two notification devices in a comparative example. The figure for explaining the positional relationship of two notification devices in a comparative example. The figure for explaining the modification of the positional relationship of two notification devices.

An embodiment of a notification device for an industrial vehicle will be described below with reference to FIGS. 1 to 10.
As shown in FIGS. 1 and 2, the forklift 10 as an industrial vehicle includes a vehicle body 11, a driving wheel 11a located at the front lower part of the vehicle body 11, a steering wheel 11b located at the rear lower part of the vehicle body 11, It is equipped with The vehicle body 11 includes a machine frame 12. The machine frame 12 is a part located at the lower part of the vehicle body 11. The driving wheel 11a is provided at the front lower part of the machine frame 12, and the steering wheel 11b is provided at the rear lower part of the machine frame 12.

Further, the vehicle body 11 includes a head guard 14 and four pillars 15. The head guard 14 is a part located at the top of the vehicle body 11. The four pillars 15 support the head guard 14. Specifically, two of the four pillars 15 extend upward toward the head guard 14 from both ends of the front upper part of the machine frame 12 in the vehicle width direction, and extend upward toward the head guard 14 . They are connected to both ends in the width direction. The remaining two pillars 15 extend upward toward the head guard 14 from both ends in the vehicle width direction at the rear upper part of the machine frame 12, and extend upward toward the head guard 14. They are connected to both ends in the width direction.

The forklift 10 includes a driver's cab V. The driver's cab V is an area surrounded by the machine frame 12, four pillars 15, and the head guard 14. The driver's cab V is provided with a driver's seat 13. A worker using the forklift 10 can sit in the driver's seat 13. Furthermore, an accelerator pedal 11c is provided on the floor of the driver's cab V.

The forklift 10 includes a cargo handling device 100. The cargo handling device 100 includes a mast 101 erected at the front of a vehicle body 11, a lift bracket 102 fixed to the mast 101, and a pair of forks 103 mounted on the lift bracket 102. A load is loaded onto the fork 103. Note that the mast 101 is a part of the vehicle body 11.

The cargo handling device 100 includes a lift cylinder 104 that moves the lift bracket 102 up and down. Then, by the operation of the lift cylinder 104, the fork 103 moves up and down together with the lift bracket 102. The mast 101 supports a lift bracket 102 so as to be movable up and down. The cargo handling device 100 also includes a tilt cylinder 105 that tilts the mast 101. Then, by driving the tilt cylinder 105, the fork 103 tilts together with the mast 101. Lift cylinder 104 and tilt cylinder 105 are hydraulic cylinders. The cargo handling device 100 performs cargo handling operations such as lifting the lift bracket 102 using the lift cylinder 104 and tilting the mast 101 using the tilt cylinder 105 .

The forklift 10 includes a traveling motor M that drives drive wheels 11a and a battery 16. Then, the forklift 10 travels at a vehicle speed corresponding to the accelerator opening degree of the accelerator pedal 11c by controlling the drive of the driving motor M according to the accelerator opening degree of the accelerator pedal 11c. Therefore, in the forklift 10 of this embodiment, the traveling motor M is driven by supplying electric power from the battery 16 to the traveling motor M, and the drive wheels 11a are rotationally driven by the driving of the traveling motor M. It is a battery-powered vehicle that operates during driving.

Note that the forklift 10 may be operated by a worker seated in the driver's seat 13 to carry out the traveling operation and the cargo handling operation, or the forklift 10 may be operated remotely by the worker without the worker sitting in the driver's seat 13. A traveling operation and a cargo handling operation may be performed.

The forklift 10 is equipped with a stereo camera 18. The stereo camera 18 is installed at the upper rear of the head guard 14. The stereo camera 18 images the area around the forklift 10. Note that the installation position of the stereo camera 18 is arbitrary.

The forklift 10 includes a notification device 20. Notification device 20 is electrically connected to battery 16 via electric wire 17 . Then, power from the battery 16 is supplied to the notification device 20 via the electric wire 17. In this embodiment, two notification devices 20 are attached to one of the four pillars 15. Note that only one notification device 20 may be attached to the pillar 15, or three or more notification devices 20 may be attached to the pillar 15. Further, the notification device 20 may be attached to at least two of the four pillars 15, respectively.

The forklift 10 includes a control device 19. The control device 19 is housed inside the machine frame 12. Note that the control device 19 can be installed at any location with respect to the forklift 10. The control device 19 includes a central processing control unit (CPU). Further, the control device 19 includes a memory including a read-only memory (ROM) in which various programs, maps, etc. are stored in advance, and a random access memory (RAM) in which CPU calculation results are temporarily stored. Further, the control device 19 includes a timer counter, an input interface, an output interface, and the like.

The control device 19 is electrically connected to the stereo camera 18. Images captured by the stereo camera 18 are transmitted from the stereo camera 18 to the control device 19 . The control device 19 stores in advance a calculation program that detects objects existing around the forklift 10 from images transmitted from the stereo camera 18 and calculates the distance between the forklift 10 and the object. Further, the control device 19 stores in advance a determination program that determines whether the distance between the forklift 10 and the object is less than a predetermined distance.

Further, the control device 19 stores in advance a program that supplies power from the battery 16 to the notification device 20 via the electric wire 17 when it is determined that the distance between the forklift 10 and the object is less than a predetermined distance. There is. Then, for example, when the control device 19 determines that the distance between the forklift 10 and the object is less than a predetermined distance, the notification device 20 receives power from the battery 16 via the electric wire 17 and performs work. Emit light to notify the person. In this way, the notification device 20 notifies the worker that the distance between the forklift 10 and the object is less than the predetermined distance.

The configuration of the notification device 20 will be described in detail below.
As shown in FIGS. 3, 4, 5, and 6, the notification device 20 includes a base 30, a light emitter 50, an outer lens 70 as a lens, and a guard part 80. The base 30 has a flat mounting wall 31 and a peripheral wall 32 erected in a cylindrical shape from the outer periphery of the mounting wall 31. The color of the base 30 in this embodiment is black.

The mounting wall 31 has a flat plate shape. Furthermore, when viewed from above, the mounting wall 31 has a square shape with four flat corners chamfered. Therefore, the mounting wall 31 has a rectangular shape when viewed from above. The mounting wall 31 has a first surface 31a and a second surface 31b. The first surface 31a is a surface perpendicular to the thickness direction of the mounting wall 31. The second surface 31b is a surface of the mounting wall 31 located on the opposite side of the first surface 31a in the thickness direction of the mounting wall 31. The first surface 31a of the mounting wall 31 is a surface that is attached to the pillar 15. Therefore, the base 30 is attached to the vehicle body 11.

The peripheral wall 32 extends in a cylindrical shape from the outer periphery of the second surface 31b of the mounting wall 31. The peripheral wall 32 includes four side walls 33 to 36 and four chamfered portions 37 to 40.
The four side walls 33 to 36 are rectangular flat plates. Each of the side walls 33 to 36 extends from the outer peripheral portion of the mounting wall 31 in the thickness direction of the mounting wall 31, respectively. Therefore, the base 30 has four side walls 33 to 36 erected from the outer periphery of the mounting wall 31. Each of the side walls 33 to 36 is erected from the outer periphery of the mounting wall 31 such that the direction in which the short side of each of the side walls 33 to 36 extends coincides with the thickness direction of the mounting wall 31. The direction in which the long sides of each of the side walls 33 to 36 extend corresponds to the direction in which the outer peripheral edge of the mounting wall 31 extends. In the following description, the four side walls 33 to 36 are respectively referred to as "first side wall 33,""second side wall 34,""third side wall 35," and "fourth side wall 36." In some cases.

The first side wall 33 and the second side wall 34 extend parallel to each other. The first side wall 33 and the second side wall 34 are erected from the outer periphery of the mounting wall 31 with their respective thickness directions aligned. Therefore, the first side wall 33 and the second side wall 34 face each other in the thickness direction. The third side wall 35 and the fourth side wall 36 extend parallel to each other. The third side wall 35 and the fourth side wall 36 are erected from the outer periphery of the mounting wall 31 with their respective thickness directions aligned. Therefore, the third side wall 35 and the fourth side wall 36 face each other in the thickness direction.

Each of the four chamfered portions 37 to 40 has a rectangular flat plate shape. Each of the chamfered portions 37 to 40 extends in the thickness direction of the mounting wall 31 from respective portions located at the four corners of the chamfered mounting wall 31. In the following description, each of the four chamfers 37 to 40 will be referred to as a "first chamfer 37," a "second chamfer 38," a "third chamfer 39," and a "fourth chamfer." It may also be written as "Part 40".

The first chamfer 37 and the second chamfer 38 extend parallel to each other. The first chamfered portion 37 and the second chamfered portion 38 are erected from the outer circumferential portion of the mounting wall 31 with their respective thickness directions aligned. Therefore, the first chamfer 37 and the second chamfer 38 face each other in the thickness direction. The third chamfer 39 and the fourth chamfer 40 extend parallel to each other. The third chamfer 39 and the fourth chamfer 40 are erected from the outer periphery of the mounting wall 31 with their respective thickness directions aligned. Therefore, the third chamfer 39 and the fourth chamfer 40 face each other in the thickness direction.

The first chamfered portion 37 is arranged between the first side wall 33 and the third side wall 35 that are adjacent to each other in the circumferential direction of the peripheral wall 32 . The first chamfered portion 37 connects the first side wall 33 and the third side wall 35 that are adjacent to each other in the circumferential direction of the peripheral wall 32. The second chamfered portion 38 is arranged between the second side wall 34 and the fourth side wall 36 that are adjacent to each other in the circumferential direction of the peripheral wall 32 . The second chamfered portion 38 connects the second side wall 34 and the fourth side wall 36 that are adjacent to each other in the circumferential direction of the peripheral wall 32. The third chamfered portion 39 is arranged between the second side wall 34 and the third side wall 35 that are adjacent to each other in the circumferential direction of the peripheral wall 32 . The third chamfered portion 39 connects the second side wall 34 and the third side wall 35 that are adjacent to each other in the circumferential direction of the peripheral wall 32. The fourth chamfer 40 is arranged between the first side wall 33 and the fourth side wall 36 that are adjacent to each other in the circumferential direction of the peripheral wall 32 . The fourth chamfered portion 40 connects the first side wall 33 and the fourth side wall 36 that are adjacent to each other in the circumferential direction of the peripheral wall 32.

Therefore, in the peripheral wall 32, the four side walls 33 to 36 and the four chamfered portions 37 to 40 are arranged alternately in the circumferential direction of the peripheral wall 32. Further, the mounting wall 31 closes an opening in the peripheral wall 32 located on the first end surface 32a side. Each of the chamfered portions 37 to 40 is located at one of the four corners of the mounting wall 31. The outer peripheral edge of the mounting wall 31 extends in the circumferential direction of the peripheral wall 32. Therefore, each chamfered portion 37 to 40 is located at one of the four corners of the mounting wall 31 and connects adjacent side walls 33 to 36 along the outer peripheral edge of the mounting wall 31.

The first chamfered portion 37 has a wire outlet 37a. The wire outlet 37a is an elongated hole that penetrates the first chamfered portion 37 in the thickness direction of the first chamfered portion 37. The long side of the wire outlet 37a extends in the circumferential direction of the peripheral wall 32 when the first chamfered portion 37 is viewed from above.

A wire introduction wall 43 is provided on the outer surface of the first chamfered portion 37 . The electric wire introduction wall 43 has a cylindrical shape and is formed from a first introduction wall 43a and a second introduction wall 43b. The first introduction wall 43a has a rectangular flat plate shape. The first introduction wall 43a extends in the thickness direction of the first chamfered portion 37 from a portion of the outer surface of the first chamfered portion 37 that is located closer to the first end surface 32a of the peripheral wall 32 than the wire outlet 37a. The thickness direction of the first introduction wall 43a coincides with the thickness direction of the mounting wall 31.

The second introduction wall 43b has an arcuate plate shape. Both ends of the arc of the second introduction wall 43b are connected to both ends of the first introduction wall 43a. Further, the second introduction wall 43b extends in the thickness direction of the first chamfered portion 37 from around the wire outlet 37a on the outer surface of the first chamfered portion 37. Therefore, the inside of the wire introduction wall 43 communicates with the wire outlet 37a. The inside of the peripheral wall 32 communicates with the outside via the wire outlet 37a and the inside of the wire introduction wall 43.

A portion of the second end surface 32b of the peripheral wall 32 corresponding to the wire introduction wall 43 bulges out in an arc shape along the outer peripheral surface of the second introduction wall 43b. A base groove 41 is formed in the second end surface 32b of the peripheral wall 32. The base groove 41 is a groove recessed from the second end surface 32b of the peripheral wall 32 toward the first end surface 32a of the peripheral wall 32. The base groove 41 extends over the entire circumference of the second end surface 32b of the peripheral wall 32. Therefore, when the second end surface 32b is viewed from above, the base groove 41 has an annular shape.

The base 30 has four bosses 42. Each boss 42 is a projection that projects from the second surface 31b of the mounting wall 31. In this embodiment, the four bosses 42 protrude from the second surface 31b of the mounting wall 31 in the thickness direction of the mounting wall 31 inside the peripheral wall 32. The surface of each boss 42 opposite to the second surface 31b of the mounting wall 31 is flat. The length of each boss 42 in the axial direction is equal. Therefore, the surface of the boss 42 opposite to the second surface 31b of the mounting wall 31 is located on the same plane.

The light emitter 50 includes a substrate 51, four light sources 54, and an inner lens 55.
The substrate 51 has a rectangular flat plate shape. The outer peripheral edge of the substrate 51 is along the inner peripheral surface of the peripheral wall 32. The substrate 51 has a size that can be accommodated inside the peripheral wall 32 with the outer peripheral edge of the substrate 51 along the inner peripheral surface of the peripheral wall 32. The board 51 is provided with an electronic circuit and electronic components (not shown). The board 51 has a mounting surface 51a on which each light source 54 is mounted, and a mounting surface 51b on which the base 30 is mounted. The mounting surface 51a is a surface perpendicular to the thickness direction of the substrate 51. The mounting surface 51b is a surface of the board 51 located on the opposite side of the mounting surface 51a. The board 51 is housed inside the peripheral wall 32 with the mounting surface 51b placed on the surface of each boss 42 opposite to the second surface 31b of the mounting wall 31.

The board 51 includes a wire connection portion 53. The electric wire 17 passing through the electric wire outlet 37a is connected to the electric wire connecting portion 53. Therefore, the electric wire 17 is drawn out from the electric wire outlet 37a. Then, power from the battery 16 is supplied to the board 51 via the electric wire 17.

Each light source 54 is, for example, an LED that emits red or green light. Each light source 54 is electrically connected to the wire connection section 53 via an electronic circuit provided on the substrate 51. Each light source 54 is an element that emits light when power is supplied from the battery 16 via the electric wire 17, the electric wire connection portion 53, and the electronic circuit of the board 51. Therefore, the electric wire 17 supplies power to the light emitter 50.

The inner lens 55 is a light-transmitting member that transmits light from each light source 54 and receives light from each light source 54 to emit light. The inner lens 55 includes a main body portion 56 and a substrate protection portion 57. The main body portion 56 has a square plate shape. The main body portion 56 has a spherical concave surface 56a that is gradually depressed from the outer circumferential portion of the main body portion 56 toward the center portion of the main body portion 56. Note that when the main body portion 56 and the substrate protection portion 57 receive light from each light source 54, they emit light from their entire surfaces.

The board protection section 57 includes a front protection section 58 and a side protection section 59. The front protection portion 58 has an annular shape that protrudes from the outer peripheral portion of the main body portion 56 in a direction perpendicular to the thickness direction of the main body portion 56 . The front protection part 58 has a flat plate shape.

The side protection portion 59 has a cylindrical shape extending from the outer peripheral portion of the surface of the front protection portion 58 opposite to the main body portion 56 . The side protection portion 59 is provided so as not to overlap the main body portion 56 when the inner lens 55 is viewed from the side. The side protection part 59 is provided so that the end of the side protection part 59 on the opposite side to the front protection part 58 contacts the outer peripheral part of the mounting surface 51a.

The inner lens 55 is placed on the substrate 51 such that the mounting surface 51a and the concave surface 56a face each other in the thickness direction of the substrate 51. The substrate 51 is held between the boss 42 and the inner lens 55. In this way, the light emitter 50 is attached to the second surface 31b of the mounting wall 31 via each boss 42. Therefore, the light emitter 50 is provided on the base 30. The second surface 31b of the mounting wall 31 is the surface of the base 30 on which the light emitting body 50 is provided.

Since the end of the side protection part 59 on the opposite side from the front protection part 58 is in contact with the outer peripheral part of the mounting surface 51a, the inner lens 55 covers the mounting surface 51a. Therefore, the inner lens 55 also functions as a cover to protect the mounting surface 51a.

Each light source 54 is located between the mounting surface 51a and the concave surface 56a. Therefore, the main body portion 56 functions as a concave lens with respect to the light from the light source 54. The optical axis of the inner lens 55 as a concave lens in this embodiment extends in the thickness direction of the substrate 51 from the center of the concave surface 56a. The optical axis of the inner lens 55 in this embodiment is the optical axis Z of the light emitter 50.

The outer lens 70 is a member that transmits the light from the light emitter 50. The outer lens 70 is made of, for example, acrylic resin or polymer resin. Note that the outer lens 70 may be made of any material as long as it transmits light.

The outer lens 70 has a lens front section 71, a lens side surface section 72, and a lens step section 73.
The lens front section 71 is disposed at a position facing the second surface 31b of the mounting wall 31 with the light emitter 50 interposed therebetween. Therefore, the lens front section 71 is arranged at a position facing the surface of the base 30 on which the light emitter 50 is provided. The thickness direction of the mounting wall 31, the thickness direction of the substrate 51, the direction of the optical axis Z of the light emitting body 50, and the thickness direction of the lens front portion 71 coincide with each other.

The lens front section 71 has a flat plate shape. The lens front section 71 includes a front entrance surface 71 a that is an entrance surface of the outer lens 70 and a front exit surface 71 b that is an exit surface of the outer lens 70 . Therefore, the front exit surface 71b is formed by the lens front section 71. The front entrance surface 71a faces the second surface 31b of the mounting wall 31 with the light emitter 50 in between. The front exit surface 71b is a surface located on the opposite side of the front entrance surface 71a of the lens front section 71. Therefore, the front entrance surface 71a is located on the opposite side from the front exit surface 71b in the thickness direction of the lens front section 71. The outer edge of the front emission surface 71b is the outer periphery of the lens front section 71.

The lens side surface portion 72 has a cylindrical shape extending in the thickness direction of the lens front portion 71 . The lens side surface portion 72 is arranged so as to surround the lens front portion 71 when the outer lens 70 is viewed from above in the thickness direction of the lens front portion 71 . The first end of the lens side surface portion 72 is located on the same plane as the front entrance surface 71a. The second end of the lens side surface portion 72 is fitted into the base groove 41. The lens side surface portion 72 is arranged at a position surrounding the light emitter 50.

The lens side surface portion 72 includes a side entrance surface 72a that is an entrance surface of the outer lens 70, and a side exit surface 72b that is an exit surface of the outer lens 70. Therefore, the side surface exit surface 72b is formed by the lens side surface portion 72. The side entrance surface 72 a is a portion of the inner peripheral surface of the lens side surface portion 72 that protrudes from the base groove 41 . The side exit surface 72b is a portion of the outer peripheral surface of the lens side surface 72, which is a surface located on the opposite side of the side entrance surface 72a of the lens side surface 72, and protrudes from the base groove 41. Therefore, the side entrance surface 72a is located on the opposite side from the side exit surface 72b in the thickness direction of the lens side surface portion 72. In addition, since the lens side surface portion 72 is a cylindrical peripheral wall extending in the thickness direction of the lens front surface portion 71, the side light emitting surface 72b extends in a direction intersecting the front light emitting surface 71b. In this embodiment, the side emission surface 72b extends in a direction perpendicular to the front emission surface 71b. The side light emitting surface 72b has an outer edge located on the side opposite to the base 30 and extending all the way around the lens side face 72 in the circumferential direction, and an outer edge located on the side of the base 30 and extending all the way around the lens side face 72 in the circumferential direction. and an outer edge extending from the outer edge.

The lens step portion 73 is annular and flat. The thickness direction of the lens stepped portion 73 is the same as the thickness direction of the lens front portion 71. The inner peripheral edge of the lens stepped portion 73 is connected to the outer edge of the front entrance surface 71a. The outer circumferential portion of the lens step portion 73 is connected to a portion on the first end side of the inner circumferential surface of the lens side surface portion 72 . The lens step portion 73 connects the lens front portion 71 and the lens side portion 72.

Guard part 80 is an annular protection member. Guard portion 80 is an elastic member made of resin. The color of the guard portion 80 is black. The inner circumferential surface 81 of the guard section 80 changes from the first end surface 82 located on one side of the guard section 80 in the thickness direction to the second end surface 83 located on the other side of the guard section 80 in the thickness direction. It is a slope that gradually approaches 84. The outer circumferential surface 84 of the guard section 80 is an inclined surface that gradually approaches the inner circumferential surface 81 of the guard section 80 from the first end surface 82 to the second end surface 83 of the guard section 80 . The first end surface 82 of the guard portion 80 has a flat surface shape. An annular groove 85 is formed in the first end surface 82 .

The second end surface 83 of the guard portion 80 has an annular flat surface 83a continuous to the inner circumferential surface 81 of the guard portion 80, and an annular inclined surface 83b continuous to the outer circumferential surface 84 of the guard portion 80. . The inclined surface 83b is continuous with the outer peripheral edge of the guard portion 80 on the opposite side from the inner peripheral surface 81 of the flat surface 83a. The inclined surface 83b gradually approaches the first end surface 82 from the flat surface 83a toward the outer circumferential surface 84. The outer peripheral edge of the inclined surface 83b is continuous with the outer peripheral surface 84 of the guard portion 80.

When the guard portion 80 is viewed in plan from the first end surface 82 side, the inner circumferential surface 81 of the guard portion 80 extends along the outer circumferential surface 71c of the lens front portion 71. The guard portion 80 is configured such that the inner circumferential edge of the inner circumferential surface 81 of the guard portion 80 on the first end surface 82 side is in close contact with the outer circumferential surface 71 c of the lens front portion 71 . It is attached to the outer lens 70 by being fitted into the outer peripheral surface 71c of the lens.

Specifically, when the inner circumferential surface 81 of the guard section 80 is fitted into the outer circumferential surface 71c of the lens front section 71, the inner circumferential edge of the inner circumferential surface 81 of the guard section 80 on the first end surface 82 side is connected to the lens front section. A portion of the guard portion 80 on the inner peripheral side of the groove 85 is elastically deformed toward the groove 85 . In this state, the inner peripheral surface 81 of the guard part 80 is forcibly pushed into the outer peripheral surface 71c of the lens front part 71 until the first end surface 82 contacts the lens stepped part 73. Then, as the portion of the guard portion 80 on the inner circumferential side of the groove 85 attempts to return to its original shape before being elastically deformed, the inner circumferential edge of the inner circumferential surface of the guard portion 80 on the first end surface 82 side becomes a lens. It is pressed against the outer peripheral surface 71c of the front part 71. Thereby, the guard portion 80 is firmly attached to the outer lens 70.

In a state where the guard portion 80 is attached to the outer lens 70, a portion of the inner circumferential surface 81 of the guard portion 80 on the second end surface 83 side protrudes beyond the front emission surface 71b. Therefore, the flat surface 83a of the second end surface 83 protrudes beyond the front emission surface 71b. The inner circumferential surface 81 of the guard portion 80, the flat surface 83a of the second end surface 83, the inclined surface 83b of the second end surface 83, and the outer circumferential surface 84 of the guard portion 80 are connected to the front emission surface 71b from the outside than the front emission surface 71b. When viewed from above, it extends along the outer edge of the front emission surface 71b.

Further, in a state where the guard portion 80 is attached to the outer lens 70, a portion of the first end surface 82 of the guard portion 80 on the outer circumferential surface 84 side protrudes beyond the side emission surface 72b. Therefore, the outer circumferential surface 84 of the guard portion 80 protrudes beyond the side emission surface 72b. The outer peripheral surface 84 of the guard portion 80 and the inclined surface 83b of the second end surface 83 are located on the side opposite to the base 30 on the side emission surface 72b when the side emission surface 72b is viewed from outside the side emission surface 72b. Extending along the outer edge.

Further, since the second end of the lens side surface portion 72 is fitted into the base groove 41 of the peripheral wall 32, the outer peripheral surface of the peripheral wall 32 protrudes beyond the side light emission surface 72b. The outer peripheral surface of the peripheral wall 32 extends along the outer edge of the side emission surface 72b located on the base 30 side when the side emission surface 72b is viewed from outside the side emission surface 72b.

When the notification device 20 is viewed in plan from the front emission surface 71b side, the outer circumferential surface 84 of the guard section 80 extends along the outer circumferential surface of the circumferential wall 32, and the outer circumferential surface 84 of the guard section 80 and the outer circumferential surface of the circumferential wall 32 are different from each other. overlapping. Therefore, when the notification device 20 is viewed in plan from the front emission surface 71b side, the peripheral wall 32 is not visible.

The front entrance surface 71a and the side entrance surface 72a face the light emitter 50. Therefore, the light from the light emitter 50 enters the front entrance surface 71a or the side entrance surface 72a. Therefore, the front entrance surface 71a and the side entrance surface 72a are entrance surfaces into which the light from the light emitter 50 enters. Therefore, in the outer lens 70 of this embodiment, the entrance surface on which the light from the light emitter 50 enters is the front entrance surface 71a located on the opposite side to the front exit surface 71b in the thickness direction of the lens front section 71, and A side surface incident surface 72a located on the opposite side to the side surface exit surface 72b in the thickness direction of the side surface portion 72 is included.

The light from the light emitter 50 enters the front entrance surface 71a, passes through the lens front section 71, and exits from the front exit surface 71b. Further, the light from the light emitter 50 enters the side entrance surface 72a, passes through the lens side surface 72, and exits from the side exit surface 72b. Therefore, the front light emitting surface 71b and the side light emitting surface 72b are light emitting surfaces from which light from the light emitter 50 is emitted. Therefore, in the outer lens 70 of this embodiment, the output surface that outputs the light from the light emitter 50 includes a front output surface 71b and a side output surface 72b.

Since the color of the light from the light source 54 is green or red, and the color of the guard part 80 and the base 30 is black, the light emitted from the front emission surface 71b and the side emission surface 72b is emitted from the guard part 80 and the base 30. A color that is lower in brightness than the color of the light is given.

Therefore, the inner circumferential surface 81 of the guard portion 80, the flat surface 83a of the second end surface 83, the inclined surface 83b of the second end surface 83, and the outer circumferential surface 84 of the guard portion 80 emit light from the front from the outside than the front emission surface 71b. When looking at the surface 71b, a front dark color portion 90 is formed that extends along the outer edge of the front emission surface 71b. The front dark color portion 90 is a dark color portion that is given a color that is lower in brightness than the color of the light emitted from the front light emission surface 71b.

The outer peripheral surface 84 of the guard portion 80 and the inclined surface 83b of the second end surface 83 are located on the side opposite to the base 30 on the side emission surface 72b when the side emission surface 72b is viewed from outside the side emission surface 72b. A side surface dark colored portion 91 is formed extending along the outer edge. Further, the outer circumferential surface of the peripheral wall 32 constitutes a side dark-colored portion 92 that extends along the outer edge of the side emission surface 72b located on the base 30 side when the side emission surface 72b is viewed from outside the side emission surface 72b. There is. The side dark-colored parts 91 and 92 are dark-colored parts given a color that is lower in brightness than the color of the light emitted from the side light emitting surface 72b.

Therefore, the notification device 20 of the present embodiment has a front dark color portion 90 and a side dark color portion 91 as dark color portions having a color lower in brightness than the color of light emitted from the front light emission surface 71b and the side light emission surface 72b. , 92. Therefore, the dark color portion of the notification device 20 of this embodiment includes the front dark color portion 90 and the side dark color portions 91 and 92. Moreover, thereby, the dark-colored part partitions the front emission surface 71b and the side emission surface 72b. The front dark-colored portion 90 and the side dark-colored portions 91 and 92 are arranged outside the outer lens 70.

Since the flat surface 83a of the second end surface 83 of the guard portion 80 protrudes beyond the front emission surface 71b, a portion of the front dark color portion 90 protrudes beyond the front emission surface 71b. Furthermore, since the outer circumferential surface 84 of the guard portion 80 protrudes beyond the side light emitting surface 72b, a portion of the side dark colored portion 91 protrudes beyond the side light emitting surface 72b. Furthermore, since the outer circumferential surface of the peripheral wall 32 protrudes beyond the side emission surface 72b, the side dark portion 92 protrudes beyond the side emission surface 72b.

In this embodiment, a light diffusing material is added to the outer lens 70. The light diffusing material diffuses the light that passes through the outer lens 70. A known material is used for the light diffusing material.

The light incident on the front entrance surface 71a is diffused within the lens front section 71 by the light diffusing material. The light diffused within the lens front section 71 is emitted from the front exit surface 71b. Therefore, the outer lens 70 has a front diffusion section 93 between the front entrance surface 71a and the front exit surface 71b as a diffusion section that diffuses the light incident from the front entrance surface 71a.

The light incident on the side entrance surface 72a is diffused within the lens side surface 72 by the light diffusing material. The light diffused within the lens side part 72 is emitted from the side emission surface 72b. Therefore, the outer lens 70 has a side diffusion section 94 between the side entrance surface 72a and the side exit surface 72b as a diffusion section that diffuses the light incident from the side entrance surface 72a.

Further, in this embodiment, black paint is added to the outer lens 70. As a result, the color of the outer lens 70 becomes translucent black. That is, the outer lens 70 is colored black, which is a color lower in brightness than red and green, which are the colors of the light from the light source 54. Therefore, the color of the front emission surface 71b when viewed from outside the front emission surface 71b is lower in brightness than the color of the light emitted from the front emission surface 71b. Furthermore, the color of the side emission surface 72b when viewed from outside the side emission surface 72b is lower in brightness than the color of the light emitted from the side emission surface 72b.

Next, the positional relationship between the two notification devices 20 attached to the pillar 15 will be explained. In the following description, one of the two notification devices 20 may be referred to as a "first notification device 20a" and the other of the two notification devices 20 may be referred to as a "second notification device 20b."

As shown in FIGS. 2 and 7, the two notification devices 20 are fixed to the pillar 15 by attaching each base 30 to the pillar 15. Each base 30 is attached to the pillar 15 using, for example, a double-sided tape (not shown) provided on the first surface 31a of the mounting wall 31 of the base 30. For example, the two notification devices 20 are mounted on the pillar 15 in a state where they are adjacent to each other such that the first side wall 33 of the first notification device 20a and the third side wall 35 of the second notification device 20b face each other. installed. The direction in which the first side wall 33 of the first notification device 20a and the third side wall 35 of the second notification device 20b are opposed corresponds to the direction in which the pillar 15 extends. The first notification device 20a and the second notification device 20b are arranged in parallel in the extending direction of the pillar 15.

The wire introduction wall 43 of the first notification device 20a and the wire introduction wall 43 of the second notification device 20b are adjacent to each other in the direction in which the first notification device 20a and the second notification device 20b are arranged side by side. There is. Therefore, the wire outlet 37a of the first notification device 20a and the wire outlet 37a of the second notification device 20b are adjacent to each other in the direction in which the first notification device 20a and the second notification device 20b are arranged side by side. There is. The electric wires 17 pulled out from the wire outlet 37a of the first notification device 20a and the electric wires 17 pulled out from the wire outlet 37a of the second notification device 20b are bundled by a binding member P. .

The operation of this embodiment will be explained.
For example, when a worker looks at the notification device 20 from a direction facing the front emission surface 71b, the front dark color portion 90 extending along the outer edge of the front emission surface 71b is different from the front emission surface 71b and the background of the notification device 20. Emphasize boundaries. Therefore, even when the operator views the notification device 20 from a direction facing the front emission surface 71b, it is easy for the operator to determine whether or not the light of the light emitter 50 is emitted from the front emission surface 71b. Become.

For example, when a worker looks at the notification device 20 from a direction facing the side emission surface 72b, the side dark-colored parts 91 and 92 extending along the outer edge of the side emission surface 72b are the background of the side emission surface 72b and the notification device 20. emphasize the boundaries between Therefore, for example, even when the operator views the notification device 20 from a direction facing the side emission surface 72b, it is easy for the operator to determine whether or not the light of the light emitter 50 is emitted from the side emission surface 72b. Become.

Further, since the flat surface 83a of the second end surface 83 of the guard section 80, which is a part of the front dark-colored section 90, protrudes beyond the front emission surface 71b, the notification device 20 comes into contact with objects existing around the forklift 10. In this case, the object tends to come into contact with the flat surface 83a of the second end surface 83 of the guard portion 80 that protrudes beyond the front emission surface 71b. Therefore, damage to the front emission surface 71b due to contact with an object is suppressed.

Furthermore, the outer circumferential surface 84 of the guard portion 80, which is a part of the side dark-colored portion 91, and the outer circumferential surface of the peripheral wall 32, which is the side dark-colored portion 92, protrudes beyond the side light emission surface 72b. Therefore, when the notification device 20 comes into contact with an object existing around the forklift 10, the object tends to come into contact with the outer peripheral surface 84 of the guard portion 80 or the outer peripheral surface of the peripheral wall 32, which protrudes beyond the side emission surface 72b. . Therefore, damage to the side emission surface 72b due to contact with an object is suppressed.

Here, as a comparative example, FIG. 8 shows, for example, a case where two notification devices 20 each having an electric wire outlet 37a and an electric wire introduction wall 43 are arranged side by side on the side wall 33.
As shown in FIG. 8, when the two notification devices 20 are arranged so that their respective side walls 33 face each other, the electric wires 17 drawn out from the wire outlet 37a of the two notification devices 20 are connected between the notification devices 20. to interfere. In this way, the wire outlet 37a is provided in any one of the side walls 33 to 36 of each notification device 20, and the two notification devices 20 are arranged so that the respective side walls 33 provided with the wire outlet 37a face each other. Then, it is necessary to leave a space between both notification devices 20 in order to arrange the electric wire 17 drawn out from the electric wire outlet 37a.

Moreover, FIG. 9 shows, as a comparative example, a case in which two notification devices 20 are arranged so that the side walls 33 having respective wire outlet ports 37a do not face each other.
As shown in FIG. 9, when the two notification devices 20 are arranged so that their respective side walls 33 face the same direction, when the electric wires 17 drawn out from the respective electric wire outlet 37a are grouped together, the arrangement of the electric wires 17 is changed. It can get complicated. Specifically, if the wire outlet 37a is provided in the side wall 33 of each notification device 20, the wires 17 drawn out from each wire outlet 37a will be pulled out in the same direction. If an attempt is made to bring the wires close together and bundle them with the binding member P, the degree of bending of each wire 17 will increase, and there is a risk that a load will be applied to each wire 17. Therefore, as shown in FIG. 9, a case will be considered in which each electric wire 17 pulled out from each electric wire outlet 37a is bent in the same direction and then bundled with a binding member P. In this case, of the two notification devices 20, the length of the electric wire 17 of the notification device 20 located far from the binding member P increases from the wire outlet 37a to the binding member P. In order to prevent the electric wires 17 from interfering with objects or the like, the arrangement of the electric wires 17 may become complicated.

Therefore, in this embodiment, the first chamfered portion 37 has an electric wire outlet 37a and an electric wire introduction wall 43. Therefore, there is no need to leave a space between the side walls 33 to 36 of adjacent notification devices 20 for arranging the electric wires 17. Further, by arranging the respective notification devices 20 so that the respective electric wire outlet ports 37a are adjacent to each other, it becomes easier to gather the electric wires 17 of the respective notification devices 20 at a position close to the electric wire outlet port 37a. Therefore, while reducing the distance between the notification devices 20, the arrangement of the electric wires 17 is prevented from becoming complicated.

As shown in FIG. 9, when the direction in which the wire introduction wall 43 protrudes from the side wall 33 matches the width direction of the pillar 15, the protruding tip of the wire introduction wall 43 may protrude from the pillar 15 depending on the width of the pillar 15. There is a risk that it will happen. However, in this embodiment, as shown in FIG. 7, since the electric wire introduction wall 43 protrudes from the outer surface of the first chamfered portion 37, the side walls 33 to 36 of the electric wire introduction wall 43 in the width direction of the pillar 15 The amount of protrusion from the surface is minimized. As a result, it becomes easier to prevent the electric wire introducing wall 43 from protruding from the pillar 15.

The effects of this embodiment will be explained below.
(1) When the front light emitting surface 71b is viewed from outside the front light emitting surface 71b, the front dark color portion 90 extending along the outer edge of the front light emitting surface 71b forms the boundary between the front light emitting surface 71b and the background of the notification device 20. Emphasize. Further, when the side emission surface 72b is viewed from outside the side emission surface 72b, the side dark colored parts 91 and 92 extending along the outer edge of the side emission surface 72b are the boundary between the side emission surface 72b and the background of the notification device 20. Emphasize. Therefore, the operator compares the color of the front emission surface 71b with the color of the front dark color portion 90, and contrasts the color of the side emission surface 72b with the color of the side dark color portions 91 and 92, while It can be determined whether the light of the light emitter 50 is emitted from the surface 71b and the side emission surface 72b. Therefore, it becomes easier to determine whether the light of the light emitter 50 is emitted from the front emission surface 71b and the side emission surface 72b of the outer lens 70.

(2) Since the front dark color portion 90 emphasizes the boundary between the front emission surface 71b and the background of the notification device 20, when the worker views the notification device 20 from the direction facing the front emission surface 71b, for example, However, it becomes easy to determine whether or not the light from the light emitter 50 is emitted from the front emission surface 71b. Further, since the side dark colored parts 91 and 92 emphasize the boundary between the side emission surface 72b and the background of the notification device 20, when the worker views the notification device 20 from the direction facing the side emission surface 72b, for example, Even if there is, it becomes easier to determine whether or not the light of the light emitter 50 is emitted from the side emission surface 72b. Therefore, the worker can check from various directions whether or not any notification is being sent from the notification device 20.

(3) The flat surface 83a of the second end surface 83 of the guard section 80, which is a part of the front dark-colored section 90, protrudes beyond the front emission surface 71b. According to this, when the notification device 20 comes into contact with an object existing around the forklift 10, the object tends to come into contact with the flat surface 83a of the second end surface 83 of the guard portion 80 that protrudes beyond the front emission surface 71b. Therefore, it is possible to suppress damage to the front emission surface 71b due to contact with an object. Further, the outer circumferential surface 84 of the guard portion 80, which is a part of the side dark-colored portion 91, and the outer circumferential surface of the peripheral wall 32, which is the side dark-colored portion 92, protrudes beyond the side light emission surface 72b. According to this, when the notification device 20 comes into contact with an object existing around the forklift 10, the object comes into contact with the outer peripheral surface 84 of the guard portion 80 or the outer peripheral surface of the peripheral wall 32 that protrudes beyond the side emission surface 72b. Cheap. Therefore, damage to the side emission surface 72b due to contact with an object can be suppressed.

(4) The color of the front emission surface 71b when viewed from outside the front emission surface 71b is lower in brightness than the color of the light emitted from the front emission surface 71b. According to this, for example, when the front output surface 71b is viewed from outside the front output surface 71b, the color of the front output surface 71b and the color of the light emitted from the front output surface 71b have similar brightness. Compared to some cases, when the light of the light emitting body 50 is emitted from the front emission surface 71b, the color of the front emission surface 71b and the color of the light emission body 50 are clearly distinguished. Therefore, when the light from the light emitting body 50 is emitted from the front emission surface 71b, the operator can compare the color of the front emission surface 71b and the color from the light emission body 50 to It becomes easier to notice that the light of the light emitter 50 is emitted from the emission surface 71b. Furthermore, the color of the side emission surface 72b when viewed from outside the side emission surface 72b is lower in brightness than the color of the light emitted from the side emission surface 72b. According to this, for example, when the side emission surface 72b is viewed from outside the side emission surface 72b, the color of the side emission surface 72b and the color of the light emitted from the side emission surface 72b have similar brightness. Compared to some cases, when the light of the light emitting body 50 is emitted from the side emission surface 72b, the color of the side emission surface 72b and the color of the light emission body 50 are clearly distinguished. Therefore, when the light of the light emitting body 50 is emitted from the side light emitting surface 72b, the operator can compare the color of the side light emitting surface 72b and the color of the light emitting body 50 to It becomes easier to notice that the light of the light emitter 50 is emitted from the light emitter 72b. Therefore, it becomes easier to determine whether the light of the light emitting body 50 is emitted from the front emission surface 71b and the side emission surface 72b of the outer lens 70.

(5) The outer lens 70 has a front diffuser 93 and a side diffuser 94. According to this, the light from the light emitter 50 is, for example, incident on the front incidence surface 71a and then diffused by the front diffusion section 93, and the light diffused by the front diffusion section 93 is emitted from the front emission surface 71b. Furthermore, the light from the light emitter 50 is, for example, incident on the side surface incident surface 72a and then diffused by the side surface diffusion section 94, and the light diffused at the side surface diffusion section 94 is emitted from the side surface emission surface 72b. Therefore, compared to the case where the light of the light emitter 50 is not diffused and is emitted from the front emission surface 71b or the side emission surface 72b, the entire front emission surface 71b appears to emit light uniformly, and the entire side emission surface 72b appears to be emitted uniformly. It appears to emit light evenly. Therefore, the operator can easily notice that the light of the light emitting body 50 is emitted from the front emission surface 71b and the side emission surface 72b, and the light emission of the light emission body 50 from the front emission surface 71b and the side emission surface 72b of the outer lens 70. It becomes easier to determine whether light is being emitted or not.

(6) The first chamfered portion 37 is provided with a wire outlet 37a. According to this, there is no need to leave a space between the side walls 33 to 36 of adjacent notification devices 20 for arranging the electric wires 17. Further, by arranging the respective notification devices 20 so that the respective electric wire outlet ports 37a are adjacent to each other, it becomes easier to gather the electric wires 17 of the respective notification devices 20 at a position close to the electric wire outlet port 37a. Therefore, it is possible to reduce the distance between the notification devices 20 and to prevent the arrangement of the electric wires 17 from becoming complicated.

(7) The second end surface 83 of the guard portion 80 has an inclined surface 83b that gradually approaches the first end surface 82 as it moves away from the flat surface 83a. As a result, when an object contacts the flat surface 83a of the guard portion 80, the object that contacts the flat surface 83a easily moves along the inclined surface 83b. Therefore, it is possible to suppress an object that comes into contact with the flat surface 83a from moving toward the front emission surface 71b. Therefore, it is possible to further prevent the front emission surface 71b from being damaged due to contact with an object.

(8) The outer circumferential surface 84 of the guard section 80 is an inclined surface that gradually approaches the inner circumferential surface 81 of the guard section 80 from the first end surface 82 to the second end surface 83 of the guard section 80 . As a result, when an object comes into contact with the outer peripheral surface 84 of the guard section 80 , the object that has contacted the outer peripheral surface 84 of the guard section 80 easily moves along the outer peripheral surface 84 of the guard section 80 . Therefore, an object that comes into contact with the outer circumferential surface 84 of the guard portion 80 can be suppressed from moving toward the side emission surface 72b. Therefore, it is possible to further prevent the side emission surface 72b from being damaged due to contact with an object.

(9) The notification device 20 is provided with a wire introduction wall 43 that communicates with the wire outlet 37a. Thereby, vibration of the electric wire 17 around the electric wire introduction wall 43 when the notification device 20 receives an impact is suppressed compared to a case where the electric wire introduction wall 43 is not provided. Therefore, damage to the electric wire 17 around the electric wire outlet 37a can be suppressed.

(10) The guard portion 80 is formed of an elastic member. As a result, when the inner circumferential surface 81 of the guard section 80 is fitted into the outer circumferential surface 71 c of the lens front section 71 , the inner circumferential surface 81 of the guard section 80 is pushed against the outer circumferential surface of the lens front section 71 by the elastic force of the guard section 80 . 71c. Therefore, the guard portion 80 can be more firmly fixed to the outer lens 70.

(11) A groove 85 is formed in the first end surface 82 of the guard portion 80. As a result, when the inner circumferential surface 81 of the guard section 80 is fitted into the outer circumferential surface 71c of the lens front section 71, the portion of the guard section 80 on the inner circumferential side of the groove 85 easily deforms elastically toward the groove 85. Become. Therefore, the inner peripheral surface 81 of the guard part 80 can be easily fitted into the outer peripheral surface 71c of the lens front part 71. Then, as the portion of the guard portion 80 on the inner circumferential side of the groove 85 attempts to return to its original shape before being elastically deformed, the inner circumferential edge of the inner circumferential surface of the guard portion 80 on the first end surface 82 side becomes a lens. It is pressed against the outer peripheral surface 71c of the front part 71. As a result, the guard portion 80 can be firmly attached to the outer lens 70.

(12) Since the wire introduction wall 43 protrudes from the outer surface of the first chamfered portion 37, the amount of protrusion of the wire introduction wall 43 from the side walls 33 to 36 in the width direction of the pillar 15 can be minimized. As a result, it is possible to easily prevent the electric wire introducing wall 43 from protruding from the pillar 15.

(13) The color of the front emission surface 71b when viewed from outside the front emission surface 71b is lower in brightness than the color of the light emitted from the front emission surface 71b. Furthermore, the color of the side emission surface 72b when viewed from outside the side emission surface 72b is lower in brightness than the color of the light emitted from the side emission surface 72b. According to this, for example, even if you are working outdoors and direct sunlight is shining on the front emission surface 71b and the side emission surface 72b, the color of the front emission surface 71b and the side emission surface 72b It becomes easier to distinguish between the color of the light-emitting body 50 and the color of the light-emitting body 50. Therefore, even if you are working outdoors and direct sunlight is shining on the front emission surface 71b and the side emission surface 72b, the light from the light emitter 50 will not be transmitted from the front emission surface 71b and the side emission surface 72b. It becomes easier to determine whether or not radiation is being emitted.

Note that the above embodiment can be modified and implemented as follows. The above embodiment and the following modified examples can be implemented in combination with each other within a technically consistent range.

As shown in FIG. 10, the two notification devices 20a and 20b are arranged adjacently so that the fourth side wall 36 of the first notification device 20a and the third side wall 35 of the second notification device 20b face each other. It may be attached to the pillar 15 in a state in which it is attached. According to this, the electric wire 17 connected to the second notification device 20b can pass through the space formed by providing the fourth chamfered portion 40 of the first notification device 20a. Therefore, by effectively utilizing the space formed by providing the fourth chamfered portion 40, interference between the electric wire 17 extending from the second notification device 20b and the first notification device 20a can be suppressed, and a plurality of The interval between the notification devices 20a and 20b can be reduced.

When adopting such an arrangement of the two notification devices 20a and 20b, the binding member P is further arranged above the electric wire 17 extending straight from the wire outlet 37a of the first notification device 20a. good. According to this, for example, compared to the case where two notification devices 20 are arranged as shown in FIG. It can lead to P. Therefore, the load on the electric wire 17 due to bending can be reduced while reducing the distance between the notification devices 20a and 20b.

The shape of the electric wire introduction wall 43 is not particularly limited, and may be cylindrical, for example.
○The wire introduction wall 43 may not be provided on the outer surface of the first chamfered portion 37.

○The wire outlet 37a may not be provided in any of the chamfered portions 37 to 40. For example, they may be provided on the side walls 33 to 36 or the outer lens 70.
○The number of chamfered portions 37 to 40 is arbitrary. The point is that the chamfered portion connecting the side walls 33 to 36 adjacent to each other along the outer peripheral edge of the mounting wall 31 should be located at at least one of the four corners of the mounting wall 31.

The notification device 20 may have a structure in which the base 30 does not have the chamfered portions 37 to 40.
Although the front diffuser 93 and the side diffuser 94 are configured by adding a light diffusing material to the outer lens 70, they are not limited thereto. The front diffusing section 93 and the side diffusing section 94 may, for example, form fine irregularities on the front entrance surface 71a and the side entrance surface 72a, or form fine irregularities on the front exit surface 71b and the side exit surface 72b. It may be configured by

The notification device 20 may have a configuration in which the outer lens 70 does not have the front diffuser 93 and the side diffuser 94.
Although the brightness of the color of the front emission surface 71b and the side emission surface 72b is lowered by adding black paint to the outer lens 70, the present invention is not limited thereto. For example, by providing a light attenuation element such as a polarizing film on a part or all of the front exit surface 71b and the side exit surface 72b, or on a part or all of the front entrance surface 71a and the side entrance surface 72a, the front exit surface 71b and The brightness of the side emission surface 72b may be lowered.

- Not all parts of the front dark-colored part 90 need to protrude beyond the front light emission surface 71b. In short, it is sufficient that at least a portion of the front dark color portion 90 protrudes beyond the front light emission surface 71b.
- Not all parts of the side surface dark-colored portion 91 need to protrude beyond the side surface exit surface 72b. In short, it is sufficient that at least a portion of the side surface dark-colored portion 91 protrudes beyond the side surface exit surface 72b.

- The front dark color portion 90 does not need to protrude beyond the front light emission surface 71b. For example, a color that is lower in brightness than the color of the light emitted from the front emission surface 71b is applied to a position inside the outer lens 70 that overlaps the outer edge of the front emission surface 71b in the thickness direction of the lens front part 71. The dark colored member may be arranged as a front dark colored part. In short, the front dark color portion only needs to extend along the outer edge of the front emission surface 71b when the front emission surface 71b is viewed from outside the front emission surface 71b.

- The side dark-colored parts 91 and 92 do not need to protrude beyond the side emission surface 72b. For example, a color lower in brightness than the color of the light emitted from the side emission surface 72b is applied to a position inside the outer lens 70 and where the outer edge of the side emission surface 72b overlaps with the thickness direction of the lens side surface 72. The dark-colored member may be arranged as a dark-colored side surface. In short, it is sufficient that the side dark colored portion extends along the outer edge of the side emission surface 72b when the side emission surface 72b is viewed from outside the side emission surface 72b.

- The front dark color part 90 and the side dark color part 91 may be formed by separate members.
- The notification device 20 may have a configuration that does not include the guard section 80. In this case, for example, by coloring the outer edge of the front emission surface 71b with a color lower in brightness than the color of the light emitted from the front emission surface 71b, the front emission surface 71b can be viewed from the outside than the front emission surface 71b. At this time, a front dark colored portion may be formed extending along the outer edge of the front emission surface 71b. Further, for example, the outer edge of the side emission surface 72b located on the opposite side of the base 30 may be colored with a color lower in brightness than the color of the light emitted from the side emission surface 72b. By doing so, a side dark colored portion may be formed that extends along the outer edge of the side emission surface 72b located on the opposite side of the base 30 when the side emission surface 72b is viewed from outside the side emission surface 72b. .

The front dark color portion 90 and the side dark color portions 91 and 92 may partially transmit the light from the light emitter 50.
The side light emitting surface 72b may extend in a direction oblique to the front light emitting surface 71b. In short, the side light emitting surface 72b only needs to extend in a direction intersecting the front light emitting surface 71b.

For example, the outer lens 70 may have a configuration that does not include the lens side surface portion 72. In short, the outer lens 70 may have a configuration that does not have the side exit surface 72b, for example.

For example, the outer lens 70 may have a configuration that does not include the lens front portion 71. In short, the outer lens 70 may have a configuration that does not have the front emission surface 71b, for example.

The shape of the outer lens 70 is not particularly limited, and for example, the lens front portion 71 of the outer lens 70 may be plate-shaped with a curved surface.
○The shape of the mounting wall 31 is arbitrary. For example, the mounting wall 31 may have a circular flat plate shape, a hexagonal flat plate shape, or a curved surface.

The color of the guard portion 80 is not limited to black but may be any color. In short, the front dark color portion 90 is given a color that is lower in brightness than the color of the light emitted from the front emission surface 71b, and the side dark color portion 91 is given a color that is lower in brightness than the color of the light emitted from the side emission surface 72b. The color of the guard portion 80 is not particularly limited as long as it is given a color with low brightness.

○The color of the base 30 is not limited to black but can be any color. In short, the color of the base 30 is not particularly limited as long as the side surface dark-colored portion 92 is given a color that is lower in brightness than the color of the light emitted from the side surface exit surface 72b.

The color of the base 30 does not have to be lower in brightness than the color of the light emitted from the side light emitting surface 72b. In short, the outer peripheral surface of the peripheral wall 32 does not need to function as the dark-colored side portion 92.
The notification device 20 may have a configuration in which a lens is further interposed between the outer lens 70 and the light emitting body 50.

- The base 30 may be attached to the pillar 15 using, for example, a magnet or a bolt.
The guard portion 80 may not be made of resin, but may be made of metal, for example. In short, the material of the guard portion 80 is not particularly limited.

The notification device 20 is not limited to one that notifies the worker that the distance between the forklift 10 and the object is less than a predetermined distance. In short, the notification device 20 may be any device that emits light in order to give some kind of notification to the worker.

Although the base 30 was attached to the pillar 15, the base 30 may be attached to any part of the vehicle body 11.
The forklift 10 may be an engine-type truck that uses an engine as a driving source, or a hybrid truck that uses both an engine and a travel motor as a driving source.

- The notification device 20 may be provided in an industrial vehicle other than the forklift 10.

DESCRIPTION OF SYMBOLS 11... Vehicle body, 17... Electric wire, 20... Notification device, 30... Base, 31... Mounting wall, 33-36... Side wall, 37-40... Chamfered part, 37a... Electric wire outlet, 50... Light emitter, 71... Lens front 71a...Front entrance surface which is an entrance surface, 71b...Front exit surface which is an exit surface, 72...Lens side surface, 72a...Side entrance surface which is an entrance surface, 72b...Side exit surface which is an exit surface, 90... A front dark colored part which is a dark colored part, 91, 92... a side dark colored part which is a dark colored part, 93... a front diffused part as a diffusion part, 94... a side diffused part as a diffused part.

Claims (5)

A base that can be attached to the vehicle body,
a light emitting body provided on the base;
A notification device for an industrial vehicle, comprising: a lens having an output surface that outputs light from the light emitting body,
a dark-colored portion extending along the outer edge of the output surface when viewed from outside the output surface and having a color lower in brightness than the color of the light emitted from the output surface ;
A notification device for an industrial vehicle , wherein a color of the output surface when viewed from outside the output surface is lower in brightness than a color of light emitted from the output surface . A base that can be attached to the vehicle body,
a light emitting body provided on the base;
A notification device for an industrial vehicle, comprising: a lens having an output surface that outputs light from the light emitting body,
a dark-colored portion extending along the outer edge of the output surface when viewed from outside the output surface and having a color lower in brightness than the color of the light emitted from the output surface ;
The base is
a mounting wall having a rectangular shape when viewed from above and to which the light emitting body is attached;
four side walls erected from the outer periphery of the mounting wall;
a chamfered portion located at at least one of the four corners of the mounting wall and connecting the side walls adjacent to each other along the outer peripheral edge of the mounting wall;
The notification device for an industrial vehicle , wherein the chamfer has a wire outlet through which a wire that supplies power to the light emitting body is pulled out . The lens is
a lens front portion disposed at a position facing the surface of the base on which the light emitting body is provided;
a cylindrical lens side portion disposed at a position surrounding the light emitting body;
The exit surface is
a front exit surface formed by the lens front section;
a side light emitting surface formed by the lens side surface and extending in a direction intersecting the front light emitting surface;
The notification device for an industrial vehicle according to claim 1 or 2, wherein the dark color portion partitions the front emission surface and the side emission surface. The notification device for an industrial vehicle according to any one of claims 1 to 3 , wherein at least a portion of the dark color portion protrudes beyond the emission surface. The lens has an entrance surface that is located on the opposite side of the exit surface in the thickness direction of the lens and on which light from the light emitter enters,
5. The lens according to any one of claims 1 to 4, wherein the lens has a diffusion portion between the entrance surface and the exit surface that diffuses the light incident on the entrance surface. Industrial vehicle notification device.