Transmitter

Abstract

To provide a transmitter that prevents water from entering a certain area below a main body. [Solution] A transmitter (10) comprising a main body (20) having a cover (24) on the front side of a base (22) arranged on the installation surface (100) side, and a push button (26) exposed on the front side provided on the main body (20), wherein the main body (20) has an inner space (30) communicating with the push button (26) and an outer space (32) formed on the outer periphery of the inner space (30), the inner space (30) and the outer space (32) being separated in a watertight manner by a partition (34) rising from the base (22) toward the cover (24) at the bottom of the main body (20), and the base (22) has a drainage hole (70) at the bottom of the inner space (30) that communicates with the outside on the installation surface (100) side.

Description

[Technical Field]

[0001] The present invention relates to a transmitter having a push button unit for reporting the occurrence of an abnormality. [Background technology]

[0002] To report the occurrence of an abnormality such as a fire, a transmitter is mounted on an installation surface such as a wall of a building or the front of a fire hydrant box. The transmitter has a push button on the front side, and the occurrence of an abnormality can be reported by pressing this push button.

[0003] The transmitter has a main body with a cover provided on the front side of a base on the installation surface side, and a push button is arranged on the main body. Also known is a transmitter that is also provided with an indicator light that emits light to indicate the position of the transmitter. For example, Patent Document 1 discloses such a transmitter. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2019-8616 Summary of the Invention [Problem to be solved by the invention]

[0005] The push button can be moved relative to the cover in the pushing direction, so the push button and the cover are not fixed together, and therefore the inside of the main body is not watertight. In transmitters installed outdoors, water that seeps in between the push button and the cover is guided along the inner surface of the cover to the bottom end of the main body and then drained.

[0006] The circuit boards that make up the indicator light are located in the lower part of the main body, near the cover. In conventional transmitters, water draining along the inner surface of the cover can adhere to the circuit boards near the cover due to unexpected disturbances. In addition, water droplets that adhere to the push button can fly inside the main body due to the impact of pressing the button, and can adhere to the circuit boards.

[0007] The present invention has been made in view of the above-mentioned problems, and has as its object to provide a transmitter that prevents water from entering a certain area below the main body. [Means for solving the problem]

[0008] In order to solve the above problem, the transmitter of the present invention is a transmitter that includes a main body having a cover provided on the front side of a base that is placed on the installation surface side, and the main body having a push button portion that is exposed on the front side, the main body having an inner space portion that communicates with the push button portion and an outer space portion that is formed on the outer periphery side of the inner space portion, the inner space portion and the outer space portion being separated in a watertight manner at the bottom of the main body portion by a partition portion that rises from the base toward the cover portion, and the base has a drainage hole portion at the bottom of the inner space portion that communicates with the outside on the installation surface side.

[0009] In addition, in the transmitter of the present invention, the partition portion may be provided with a guide portion that protrudes toward the push button portion at a position that is the lowest when installed, and the guide portion may each have a downwardly sloping slope portion that extends from the center toward both sides in the circumferential direction of the main body portion.

[0010] In the transmitter according to the present invention, the drain hole may be disposed near the slope.

[0011] In addition, in the transmitter of the present invention, the partition portion may have a guide rib on the surface facing the push button portion, extending in a direction rising from the base portion toward the cover portion, and an end of the guide rib may be located at the entrance of the drain hole portion.

[0012] In the transmitter according to the present invention, the base may have a rear guide portion that guides water from the drain hole toward the installation surface.

[0013] In addition, in the transmitter of the present invention, the cover portion may have a watertight material along the circumferential direction, and the tip surface of the partition portion in the rising direction from the base portion toward the cover portion may abut against the watertight material along the circumferential direction, thereby separating the inner space portion and the outer space portion in a watertight manner. [Effects of the Invention]

[0014] According to the transmitter of the present invention, the inner space portion and the outer space portion connected to the push button portion are separated in a watertight manner, and water that has entered the inner space portion is prevented from entering the outer space portion while being drained through the drainage hole portion on the installation surface side, thereby preventing water that has entered the inner space portion from adhering to components placed in the outer space portion. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 2 is a perspective view of the transmitter according to the embodiment. [Figure 2] FIG. [Figure 3] FIG. [Figure 4] 3 is a cross-sectional view taken along line AA in FIG. 2 including the installation surface. [Figure 5] FIG. [Figure 6] FIG. 2 is an enlarged front view of the vicinity of the lower end of the base. [Figure 7] FIG. 2 is an enlarged view of the installation surface side near the lower end of the base. [Figure 8] FIG. 2 is a rear view of the cover portion as seen from the installation surface side. [Figure 9] FIG. 2 is an enlarged cross-sectional view of the lower end portion of the main body. DETAILED DESCRIPTION OF THE INVENTION

[0016] An embodiment of the present invention will be described in detail with reference to the drawings. A transmitter 10 of this embodiment reports abnormalities in a monitored area and is attached to an installation surface 100 such as a building wall or an equipment storage box that houses a fire extinguisher or the like. The transmitter 10 also has a light-emitting portion so that it can display its own position. For this reason, the transmitter 10 is attached so that it is exposed on the front side of the installation surface 100.

[0017] Fig. 1 shows a perspective view of the transmitter 10, Fig. 2 shows a front view of the transmitter 10, and Fig. 3 shows a side view of the transmitter 10. Fig. 4 shows a cross-sectional view taken along line AA in Fig. 2, and Fig. 5 shows an exploded perspective view of the transmitter 10. As shown in these figures, the transmitter 10 comprises a main body having a base 22 that is disposed on the installation surface 100 side and houses various components, and a cover 24 that covers the front side of the base 22. A push button 26 is disposed slightly below the center of the cover 24 and is exposed on the front side. The main body 20 is formed so that the portion exposed on the front side is thin and approximately disk-shaped.

[0018] The main body 20 accommodates the push button 26, a switch 40 that is pressed by the push button 26, and a pressure spring 44 that returns the pressed push button 26 to its original position. The main body 20 also has a transmitter board 35 disposed therein.

[0019] An electric circuit for operating the transmitter 10 is mounted on the transmitter board 35. The specific type and configuration of the transmitter board 35 are arbitrary, but for example, it may have a rectangular shape overall, and it is attached to the installation surface 100 side of the base 22 by any method such as screwing. The installation surface 100 side of the transmitter board 35 is covered by a board cover 36. The specific type and configuration of the board cover 36 are arbitrary, but for example, it may have a rectangular shape overall, and it is attached by engaging with the base 22.

[0020] To provide the light-emitting function of the transmitter 10, the main body 20 further houses an indicator light board 50 equipped with a light-emitting unit 52, and a light guide 60 that guides light from the light-emitting unit 52. The indicator light board 50 has a roughly semicircular arc shape, and is equipped with light-emitting units 52 at the 12 o'clock and 6 o'clock positions in the circumferential direction. The light guide 60 is formed in a ring shape that extends around the entire circumference of the main body 20. The light guide 60 can be formed using any light-guiding material (for example, a transparent resin material, etc.).

[0021] The cover portion 24 has a transmission region 24a that transmits light guided by the light guide 60. The transmission regions 24a are provided in an arc-shaped configuration on both the left and right sides of the outer periphery of the front surface of the main body portion 20. Therefore, when the light emitting portion 52 emits light, the light is guided in the circumferential direction by the light guide 60, emitted toward the front side, and emitted to the outside through the transmission region 24a of the cover portion 24. As a result, the light from the light emitting portion 52 is visually recognized as if arc-shaped flat regions are emitting light on both the left and right sides of the outer periphery of the front surface of the main body portion 20.

[0022] The base 22 is provided with a partition wall 34 extending in the circumferential direction and rising toward the cover 24. By integrating the base 22 and the cover 24 to form the main body 20, an inner peripheral space 30 radially inward from the partition wall 34 and an outer peripheral space 32 radially outward from the partition wall 34 are formed in the main body 20.

[0023] 4, a switch 40 is disposed in the inner space 30, and the surface of the push button unit 26 facing the installation surface 100 is exposed in the inner space 30. The inner space 30 is in communication with at least the push button unit 26, and water can enter through the gap between the push button unit 26 and the cover unit 24.

[0024] The outer peripheral space 32 is formed around the entire periphery of the main body 20, but the outer peripheral space 32 adjacent to the lower part of the inner peripheral space 32, where water may be present that has seeped in through the gap between the push button 26 and the cover 24, is located below the inner peripheral space 32 and is partitioned watertight by a partition wall 34. The light-emitting unit 52, the indicator light board 50, and the light guide 60 are arranged in the outer peripheral space 32.

[0025] Fig. 6 shows an enlarged view of the front side near the lower end of the base 22, and Fig. 7 shows an enlarged view of the installation surface 100 side near the lower end of the base 22. The base 22 has drainage holes 70 at the bottom of the inner circumferential space 30 that communicate with the outside on the installation surface side. The drainage holes 70 are formed as holes that penetrate the base 22 between the front side and the installation surface side. The drainage holes 70 are provided at two locations that are the lowest part of the inner circumferential space 30 in the installed state so that water that has entered the inner circumferential space 30 can be drained to the outside.

[0026] The partition wall 34 is provided with a guide portion 72 that protrudes toward the push button 26 at its lowest position when installed. The guide portion 72 is disposed between the two drainage hole portions 70 and has sloped surfaces 73, 73 that slope downward from the center to both sides in the circumferential direction of the main body 20. The sloped surfaces 73, 73 are each located near the drainage hole portions 70. Therefore, at the lowest part of the partition wall 34, water that has entered the inner circumferential space 30 easily flows toward the two drainage hole portions 70 on both sides. This ensures that water that has entered the inner circumferential space 30 can be reliably guided to the drainage hole portions 70 and drained.

[0027] The partition wall 34 has a plurality of guide ribs 74 on the surface facing the push button 26, extending in a direction rising from the base 22 toward the cover 24. The guide ribs 74 are shorter than the guide portions 72, and their ends are located at the entrances to the drain holes 70. The guide ribs 74 allow water that has entered the inner circumferential space 30 and reached the partition wall 34 to easily flow toward the drain holes 70 due to surface tension, allowing water that has entered the inner circumferential space 30 to be efficiently drained.

[0028] The base 22 has a recessed portion 75 at the bottom end on the side facing the installation surface 100, and the drainage hole portion 70 is connected to the recessed portion 75. The recessed portion 75 has a sloped back guide portion 76 formed therein to make it easier for water from the drainage hole portion 70 to be drained out the bottom end.

[0029] 8, a watertight material 80 is provided along the circumferential direction of the cover portion 24. The tip end surface of the partition portion 34, which rises from the base portion 22 toward the cover portion 24, abuts against the watertight material 80 along the circumferential direction, thereby dividing the inner peripheral space portion 30 and the outer peripheral space portion 32 in a watertight manner.

[0030] 9, water that has entered the inner peripheral space 30 of the main body 20 reaches the partition 34 and is guided toward the drain hole 70 by the guide portion 72 and the guide rib 74. At this time, watertight material 80 is disposed between the partition 34 and the cover 24, so that water is prevented from entering the outer peripheral space 32.

[0031] The drain hole portion 70 is formed in a downward inclination toward the installation surface 100 side, and water is drained to the rear side of the main body portion 20, which is the installation surface 100 side. The drained water passes through the space between the main body portion 20 and the installation surface 100 (recessed portion 75) and is drained downward.

[0032] In this way, water that has entered the inner circumferential space 30 is prevented from entering the outer circumferential space 32, and is drained through the drainage holes 70 on the installation surface 100 side, thereby preventing water from adhering to components such as the light-emitting unit 52 and the indicator light board 50 that are arranged in the outer circumferential space 32. In addition, the guide portions 72 and guide ribs 74 allow water within the inner circumferential space 30 to be smoothly guided to the drainage holes 70.

[0033] Although the embodiment of the present invention has been described above, the application of the present invention is not limited to this embodiment, and various applications are possible within the scope of the technical concept thereof. [Explanation of symbols]

[0034] 10 Transmitter 20 Main body 22 Base 24 Cover part 24a Transparent area 26 Push button section 30 Inner space 32 Outer space 34 Bulkhead 35 Transmitter board 36 Circuit board cover 40 Switch 42 Presser spring 50 Indicator light board 52 Light-emitting part 60 Light Guide 70 Drain hole 72 Guidance part 73 Slope 74 Guiding Rib 75 Concave part 76 Rear guide section 80 Watertight material 100 Installation surface

Claims

1. A transmitter comprising a main body having a cover provided on the front side of a base disposed on an installation surface, and a push button provided on the main body and exposed on the front side, the main body portion has an inner peripheral space portion communicating with the push button portion, and an outer peripheral space portion formed on the outer peripheral side of the inner peripheral space portion, the inner circumferential space and the outer circumferential space are partitioned in a watertight manner by a partition wall portion that rises from the base portion toward the cover portion at a lower portion of the main body portion, The base portion has a drain hole portion at the bottom of the inner peripheral space portion that communicates with the outside on the installation surface side.

2. the partition wall includes a guide portion that protrudes toward the push button portion at a position that is the lowest in the installed state, The transmitter according to claim 1 , wherein the guide portion has sloped surfaces that slope downward from a center portion to both sides in the circumferential direction of the main body portion.

3. The transmitter according to claim 2 , wherein the drain hole is disposed near the slope.

4. the partition wall has a guide rib on a surface facing the push button portion, the guide rib extending in a direction rising from the base portion toward the cover portion; 4. The transmitter according to claim 1, wherein an end of the guide rib is located at the entrance of the drain hole.

5. 4. The transmitter according to claim 1, wherein the base has a rear guide portion that guides water from the drain hole toward the installation surface.

6. The cover portion has a watertight material along the circumferential direction, A transmitter as described in any one of claims 1 to 3, wherein the tip surface of the partition portion in the rising direction from the base portion toward the cover portion abuts against the watertight material along the circumferential direction, thereby dividing the inner space portion and the outer space portion in a watertight manner.

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