Indicating lamp

Abstract

To provide a pilot lamp capable of adjusting light distribution to right and left sides.SOLUTION: A pilot lamp 1 is configured such that a light emitting display unit 2a emits light using a light emitting element 6 as a light source to display a position of a disaster prevention device, where the pilot lamp is provided with: inclination angle adjustment means 9 capable of adjusting an inclination angle of an optical axis 6X of the light emitting element 6 to the left or right side with respect to a front direction 2F of the light emitting display unit 2a; and luminous intensity adjustment means capable of adjusting the luminous intensity of the light emitting element 6. The inclination angle adjustment means 9 can adjust the inclination angle of a light emitting element substrate 7 on which the light emitting element 6 is mounted, and the luminous intensity adjustment means can be a resistor electrically connected to the light emitting element 6.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] This invention relates to an indicator light for indicating the position of disaster prevention equipment.

Background Art

[0002] For various disaster prevention equipment such as indicator lights for fire hydrant equipment, emergency alarm equipment, and automatic fire alarm equipment, an indicator light for indicating the position of the disaster prevention equipment is provided. The indicator light emits light with a light emitting element as a light source, and the light emitting display unit emits light to indicate the position of the disaster prevention equipment (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The indicator light is also provided for disaster prevention equipment for tunnels (such as road tunnels). Specifically, it is provided on the housing of disaster prevention equipment such as fire hydrant devices and fire extinguisher boxes installed on the side of the roadway (such as inspection roads).

[0005] Disaster prevention equipment for tunnels needs to be visible to people in vehicles traveling on the roadway, and visibility from the left and right sides is required. Tunnels may curve in the vehicle's traveling direction, but if the light distribution to the left and right sides of the indicator light does not match the curve, the visibility from the left and right sides will deteriorate. However, conventionally, the light distribution to the left and right sides of the indicator light has not been variable and cannot be adjusted according to installation conditions such as the curve of the tunnel.

[0006] In view of the above circumstances, an object of this invention is to obtain an indicator light capable of adjusting the light distribution to the left and right sides.

Means for Solving the Problems

[0007] The present invention relates to an indicating lamp in which a light-emitting display unit emits light using a light-emitting element as a light source and indicates the position of a disaster prevention device, and the inclination angle of the optical axis of the light-emitting element to the left or right with respect to the front direction of the light-emitting display unit Size is provided with inclination angle adjusting means that enables adjustment ru ko and is characterized by the indicating lamp

[0008] In the present invention, the optical axis of the light-emitting element can be inclined at an angle of 60 to 85 degrees to the left or right with respect to the front direction of the light-emitting display unit. The light-emitting element is located on the right side of the central axis of the light-emitting display unit and is provided in an arrangement in which the optical axis inclines to the left with respect to the front direction of the light-emitting display unit, or is located on the left side of the central axis of the light-emitting display unit and the optical axis is the same as the above Light It can be provided in an arrangement in which the light travels while inclining to the right with respect to the front direction of the display unit. The light-emitting element is located on the right side of the central axis of the light-emitting display unit and is provided in an arrangement in which the optical axis inclines to the right with respect to the front direction of the light-emitting display unit, or is located on the left side of the central axis of the light-emitting display unit and the optical axis is the same as the above LightIt can be provided in an arrangement that progresses while being inclined to the left with respect to the front direction of the display unit. The inclination angle adjusting means can be configured to be able to adjust the inclination angle of the light emitting element substrate on which the light emitting element is mounted. The inclination angle adjusting means can be a fixing means for fixing the light emitting element substrate so that its inclination angle can be adjusted, or an adjusting member that is inserted into and removed from the fixing portion of the light emitting element substrate and can adjust the inclination angle of the light emitting element substrate. The light emitting element substrate is located on the back side of the light emitting display unit, separated from the central axis of the light emitting display unit and positioned left and right, and while the mounting surface side of the light emitting element faces the central axis side of the light emitting display unit, it faces the back side of the light emitting display unit, and can be provided in an arrangement that is inclined to the left or right with respect to the front direction of the light emitting display unit. The indicating lamp can be further provided with a light intensity adjusting means for adjusting the light intensity of the light emitting element. The light intensity adjusting means can be a resistor that is electrically connected to the light emitting element. The light intensity adjusting means can be made operable by a tool inserted through a tool insertion port.

Effect of the Invention

[0009] In this invention, an inclination angle adjusting means is provided to be able to adjust the inclination angle of the optical axis of the light emitting element to the left or right with respect to the front direction of the light emitting display unit. In stages Therefore, the angle of the light of the light emitting element to the left and right sides Degree can be adjusted, and the light distribution to the left and right sides can be adjusted.

[0010] Therefore, according to this invention, an indicating lamp capable of adjusting the light distribution to the left and right sides can be obtained.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Embodiments for Carrying Out the Invention

[0012] Hereinafter, embodiments of the indicator light of this invention will be described with reference to Figs. 1 to 7 as the indicator light 1. Note that the indicator light of this invention can be used as an indicator light for indicating the positions of various disaster prevention devices, such as the indicator light of a fire hydrant facility, the indicator light of an emergency alarm facility, and the indicator light of an automatic fire alarm facility.

[0013] Here, the terms indicating positions and directions such as "front", "rear", "left", and "right" used to describe the indicator light of this invention are used according to the positions and directions in the installation state of the indicator light.

[0014] [Overall Configuration] The indicator light 1 includes a cover 2 and a main body 3 to which the cover 2 is attached at the front (see Figs. 1 to 6). It is provided on various disaster prevention devices, and the light-emitting display part 2a (details will be described later) of the cover 2 emits light using the light of the LED element 6 (details will be described later) provided in the main body 3 as a light source to indicate the positions of various disaster prevention devices.

[0015] Note that the indicator light 1 further includes a front panel 4 attached to the front part of the main body 3 together with the cover 2, and a rear cover 5 attached to the back side of the main body 3 (see Figs. 1 to 6).

[0016] [Light-Emitting Display Part] The cover 2 has a light-emitting display portion 2a that is circular in shape when viewed from the front and is exposed to the outside from the opening 4a of the front panel 4 (see FIGS. 1, 4, and 6). The light-emitting display portion 2a has translucency and emits light using the light of the LED element 6 provided in the main body 4 as a light source as described above.

[0017] More specifically, the indicator light 1 is provided, for example, on the front surface of the housing of various disaster prevention devices with the front side of the light-emitting display portion 2a exposed to the outside.

[0018] In the case of the illustrated example, the front surface of the light-emitting display portion 2a forms a flat surface (see FIG. 4). However, the front surface may form a convex curved surface that protrudes forward, or conversely, a concave curved surface that is recessed backward.

[0019] [Light-emitting element, light-emitting element substrate] ·LED element, LED element substrate The indicator light 1 includes a plurality of LED elements 6 (an example of a light-emitting element) that serve as a light source for the light emission of the light-emitting display portion 2a (see FIGS. 4 and 6). The LED element 6 is provided in the main body 3 in a state of being mounted on an LED element substrate 7 (an example of a light-emitting element substrate), and emits light to cause the light-emitting display portion 2a to emit light by radiating light from a position behind the back side of the light-emitting display portion 2a.

[0020] ·Inclined arrangement, left-right arrangement The LED element 6 is provided in an arrangement in which the optical axis 6X inclines and travels to the left or right with respect to the front direction 2F in which the optical axis 6X is parallel to the central axis 2X of the light-emitting display portion 2a (see FIG. 4). The LED element substrate 7 is provided in an arrangement in which the optical axis 6X of the mounted LED element 6 inclines and travels in such a manner.

[0021] As for the arrangement of the LED element substrates 7, for example, as in the illustrated example, two LED element substrates 7 are positioned left and right with the central axis 2X of the light-emitting display section 2a in between, so as to be housed inside the main body 3, behind the back side of the light-emitting display section 2a. While the mounting surface of the LED elements 6 faces the central axis 2X side of the light-emitting display section 2a and faces the back side of the light-emitting display section 2a, the substrates themselves may be provided in an arrangement inclined to the left or right with respect to the front direction 2F of the light-emitting display section 2a (see Fig. 4).

[0022] Although not shown in the drawings, as for the arrangement of the LED element substrates 7, two LED element substrates 7 may be arranged back-to-back left and right with the central axis of the light-emitting display section 2a in between. While the mounting surface side of the LED elements 6 faces the left and right sides, and faces the back side of the light-emitting display section 2a, the substrates themselves may be inclined to the left or right with respect to the front direction 2F of the light-emitting display section 2a.

[0023] [Tilt Angle Adjusting Means] The indicator lamp 1 includes tilt angle adjusting means (for example, the shim adjusting section 9 provided at the fixing section 8 of the LED element substrate 7 described later) for adjusting the tilt angle of the optical axis 6X of the LED element 6 to the left or right with respect to the front direction 2F of the light-emitting display section 2a.

[0024] By including such tilt angle adjusting means, the indicator lamp 1 can appropriately adjust the angle of the light of the LED element 6 to the left and right sides according to the installation environment, and can adjust the light distribution to the left and right sides.

[0025] As the tilt angle adjusting means of the optical axis 6X of the LED element 6, it can be the means for adjusting the tilt angle of the LED element substrate 7 itself to the left or right with respect to the front direction 2F of the light-emitting display section 2a.

[0026] For example, in the illustrated example, the LED element substrate 7 is fixed on the bottom wall 3a in the main body 3 in the inclined posture as described above by the fixing portion 8. As an adjusting means for the inclination angle of the LED element substrate 7 in the fixing portion 8, a shim (spacer) plate 9a is provided to be insertable and removable so that the inclination angle of the LED element substrate 7 to the left or right with respect to the front direction 2F of the light emitting display portion 2a can be adjusted (see FIGS. 4 and 6). In the illustrated example, the shim adjusting portion 9 has a triangular cross section having an inclined surface for supporting the substrate, and two are provided on the left and right sides of the bottom wall 3a of the main body 3, respectively.

[0027] As an inclination angle adjusting means in place of the shim adjusting portion 9, for example, the fixing portion 8 itself can be a bracket (such as a torque hinge) that can adjust the inclination angle of the LED element substrate 7 to the left or right with respect to the front direction 2F of the light emitting display portion 2a.

[0028] Regarding the preferable inclination angle of the LED element substrate 7, the indicator lamp 1 is most easily visible from the position of the driver of the vehicle traveling on the lane located in front of the indicator lamp 1. Specifically, based on the front direction 2F, the position in the range where the optical axis 6X faces in the direction of 60 to 85 degrees is the position where the indicator lamp 1 is most visible. By emitting the light of the LED element 6 in the direction of the angle in that range, it can be said that the driver as the viewer can easily find the indicator lamp 1 and the visibility from the side is improved. That is, it is preferable to arrange the LED element substrate 7 so that the optical axis 6X is inclined by 60 to 85 degrees based on the front direction 2F. Further, when using shim (spacer) plates 9a as the inclination angle adjusting means, it is preferable to provide two or three.

[0029] [Light intensity adjusting means] In addition to the inclination angle adjusting means described above, the indicator lamp 1 is provided with a light intensity adjusting means (for example, a variable resistor 10 described later) for adjusting the light intensity of the LED element 6.

[0030] By having such a light intensity adjustment means, the display lamp 1 can appropriately adjust the light intensity of the LED element 6 within the range where the entire lamp does not turn off, corresponding to the installation environment such as the illuminance of the tunnel where it is installed, and can adjust the light distribution to the left and right sides.

[0031] Moreover, it also has the effect of reducing the glare for the viewer. For example, when the LED element 6 emits light towards the aforementioned direction with good visibility, the driver can easily find the display lamp 1, but may feel glare when viewing from the extension line of the optical axis 6X. Therefore, the light intensity of the LED element 6 can be adjusted by the light intensity adjustment means within the range where the display lamp 1 does not turn off completely.

[0032] As the light intensity adjustment means, for example, as shown in the illustrated example, a variable resistor 10 (an example of resistance) provided inside the main body 3 and electrically connected to the LED element 6 can be used (see FIG. 6). The variable resistor 10 can adjust the light intensity of the LED element 6 by operating its operation portion 10a (see FIG. 5) to change the resistance value.

[0033] The main body 3 is provided with a tool insertion port 3b that allows the operation portion 10a of the variable resistor 10 to be operable from the outside using a tool such as a driver (see FIGS. 5 and 6). In the case of the illustrated example, the tool insertion port 3b corresponds to the position of the operation portion 10a of the variable resistor 10 attached on the bottom wall 3a of the main body 3 and is provided penetrating the bottom wall 3a of the main body 3 (see FIGS. 5 and 6). The rear cover 5 is attached to the rear side so as to cover the rear portion of the main body 3 where such a tool insertion port 3b is provided and functions as a waterproof cover or the like (see FIGS. 2 to 4 and 6).

[0034] Note that in the case of the illustrated example, the variable resistor 10 is shared for one of the left and right LED element substrates 7, but it may be provided separately so that the light intensities of the LED elements 6 mounted on the left and right LED element substrates 7 can be adjusted separately.

[0035] As the means for adjusting the light intensity in place of the variable resistor 10, for example, a method of switching a fixed resistor using a dip switch or a rotary switch can be considered. By switching the fixed resistor that defines the current value, it is possible to adjust the light intensity. These switches are installed near the fixed resistor or the like, and the light intensity can be changed in multiple steps. Also, a method of reducing the voltage applied to the LED 6 by switching the number of connected diodes or Zener diodes using the aforementioned switches can be considered. Furthermore, a method of adding a substrate equipped with a microcomputer, a switch, etc., and switching the light-emitting current of the LED on the microcomputer side according to the switch can be considered.

[0036] [Specific Example of Installation of Indicator Light] FIG. 7 shows a fire hydrant device 11 of a fire hydrant facility for a tunnel. The indicator light 1 can be used as an indicator light for such a fire hydrant device 11.

[0037] The housing of the fire hydrant device 11 houses a fire hose or the like and is installed on the side of the road (such as an inspection road) beside the road with the front side facing the road side. The indicator light 1 is attached and provided in a state where the light-emitting display portion 2a faces forward and is exposed to the outside on the front surface of the housing of the fire hydrant device 11.

[0038] The tunnel may curve in the traveling direction of the vehicle. If the light distribution to the left and right sides of the indicator light 1 does not match the curve, the visibility from the left and right sides will deteriorate. However, as described above, the indicator light 1 can adjust the angle of the light of the LED element 6 to the side by the tilt angle adjustment means (for example, the shim adjustment portion 9) and / or the light intensity adjustment means (for example, the variable resistor 10), and can adjust the light distribution to the left and right sides.

[0039] Therefore, according to the indicator light 1, even if the tunnel to be installed curves, the light distribution to the left and right sides can be appropriately adjusted corresponding to the curve, and it is possible to prevent the visibility from the left and right sides from deteriorating.

[0040] [Example of Configuration Change] The embodiments of the present invention have been described above with reference to FIGS. 1 to 7. However, the specific configuration is not limited to the above embodiments, and design changes and the like within the scope not departing from the gist of the present invention are also included.

[0041] For example, regarding the fixing portion 8 provided on the main body 3, a plurality of guide walls (not shown) for inserting the substrate may be provided so that the LED element substrate 7 can be inserted at an arbitrary position. Further, by using the LED element substrate 7 as a flexible substrate, the substrate can be curved and arranged, or the angle can be adjusted more finely and arranged, so that the visibility of the light-emitting display portion 2a can be improved.

Explanation of Reference Numerals

[0042] 1: Indicator light 2: Cover 2a: Light-emitting display portion 2X: Central axis 2F: Front direction 3: Main body 3a: Bottom wall 3b: Tool insertion port 4: Front panel 4a: Opening 5: Rear cover 6: LED element 6X: Optical axis 7: LED element substrate 8: Fixing portion 9: Shim adjustment portion 10: Variable resistor 11: Fire hydrant device (for tunnel)

Claims

1. A display lamp in which a light-emitting display unit emits light using a light-emitting element as a light source and displays the position of a disaster prevention device, wherein tilt angle adjusting means is provided for adjusting the magnitude of the tilt angle of the optical axis of the light-emitting element to the left or right with respect to the front direction of the light-emitting display unit.

2. The display lamp according to claim 1, wherein the optical axis of the light-emitting element is tilted at an angle of 60 to 85 degrees to the left or right with respect to the front direction of the light-emitting display unit.

3. The light-emitting element is provided in an arrangement where it is located on the right side of the central axis of the light-emitting display unit and the optical axis is tilted to the left with respect to the front direction of the light-emitting display unit, or is located on the left side of the central axis of the light-emitting display unit and the optical axis is tilted to the right with respect to the front direction of the light-emitting display unit. The display lamp according to claim 1 or 2, characterized in that it is provided in an arrangement that advances.

4. The light-emitting element is provided in an arrangement where it is located on the right side of the central axis of the light-emitting display unit and the optical axis is tilted to the right with respect to the front direction of the light-emitting display unit, or is located on the left side of the central axis of the light-emitting display unit and the optical axis is tilted to the left with respect to the front direction of the light-emitting display unit. The display lamp according to claim 1 or 2, characterized in that it is provided in an arrangement that advances.

5. The tilt angle adjusting means is for adjusting the tilt angle of the light-emitting element substrate on which the light-emitting element is mounted, and is a fixing means for fixing the light-emitting element substrate so that its tilt angle can be adjusted, or is inserted into and removed from the fixing portion of the light-emitting element substrate, and is an adjusting member for adjusting the tilt angle of the light-emitting element substrate. The display lamp according to any one of claims 1 to 4, characterized in that it is.

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