Transmitter

Abstract

To provide a transmitter including a telephone jack inside, which makes it difficult to cause discomfort by reducing a boundary between components and harmonizing with an interior of a building while securing a function of enabling a use of the telephone jack from a front side of the transmitter.SOLUTION: A transmitter comprises: a transmitter body part (10) which includes a storage case (13) having a front opening and incorporating an on-off operable switch (11) and is to be attached to an arrangement surface; and a front panel part (20) including a push button to actuate the switch and a display section. A telephone jack (12) is disposed in the transmitter body part to face the opening of the storage case. The front panel part is connected to the storage case by connection mechanisms (26, 27) provided between the front panel part and the storage case, and can be converted between a first state for closing the front opening of the storage case and a second state for opening at least a part of the opening of the storage case so as to allow the telephone jack to be operated from a front side.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an emergency alarm transmitter, and more particularly to a technique that is useful for use in a fire alarm transmitter that is installed on the wall of a building and is operated in the event of a fire to issue an alarm. [Background technology]

[0002] A fire alarm system is installed inside a building to notify people of the occurrence of a fire. The fire alarm system is composed of a fire detector, a manual fire alarm transmitter with a push button switch, a receiver, a fire alarm bell, a signal light, etc., and the fire alarm transmitter is installed at an appropriate height on the wall of a building's corridor, etc. When a fire breaks out, the person who discovers it presses the push button switch of the fire alarm transmitter hard, which transmits a signal notifying the occurrence of a fire to the receiver and also sounds an alarm from a bell installed near the transmitter, thereby notifying people in the vicinity of the occurrence of a fire.

[0003] Conventional fire alarm transmitters generally have a disk-shaped front panel on the front of the transmitter body that covers the exposed parts of the room, and the transmitter body is equipped with a push button switch, a circuit board that detects when the switch is turned on and generates and sends a signal, and a telephone jack to which a handset is connected to talk to a fire receiver monitor. The front panel also has an opening and closing door that covers the front of the telephone jack and can be opened and closed as needed, and the transmitter body is installed so as to be embedded in the wall of the building. In addition, a bullet-shaped indicator light is provided near the fire alarm transmitter so that it can be easily found even from a distance or in the dark.

[0004] On the other hand, in recent years, flat-type indicator lights with a flat or disc-shaped front surface and fire alarm transmitters with integrated indicator lights have also been put to practical use. An invention relating to a fire alarm transmitter with integrated indicator light is described in Patent Document 1, for example. The fire alarm transmitter described in Patent Document 1 has an opening / closing door on the front panel of the transmitter that covers the front of the telephone jack, and is configured in such a way that the boundaries between the indicator lights on the front and the push buttons and opening / closing door are clearly visible. On the other hand, in recent years, there has been an increasing demand for design within buildings, and transmitters with clearly visible boundaries between each component have the problem that when installed on the interior walls of a building, they do not blend in with the interior and create an awkward look.

[0005] In view of this, a transmitter has been proposed that ensures the functionality of allowing the use of a telephone jack from the front of the transmitter while reducing the boundaries between components to blend in with the interior of the building and to prevent discomfort. An example of an invention relating to such a transmitter is described in Patent Document 2. The transmitter described in Patent Document 2 is configured so that a front panel equipped with a push button and a light-emitting section is connected by a link mechanism to the front of a storage case of the transmitter main body, which has a built-in push button switch and telephone jack, so that the front panel can be converted between a first state in which the front panel closes the front opening of the storage case, and a second state in which the front opening of the storage case is open and the telephone jack can be operated from the front. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2020-144951 A [Patent Document 2] JP 2023-64395 A Summary of the Invention [Problem to be solved by the invention]

[0007] The transmitter described in Patent Document 2 is provided with tabs as a means of connecting the front panel to the storage case, and when the link portion is returned to a predetermined position, the tabs engage, thereby fixing the front panel to the storage case. However, in the configuration described in Patent Document 2, in order to use the internal telephone jack, it is necessary to remove the connecting tabs in order to open the front of the storage case by operating the front panel, which requires skill. In addition, there is an issue that when operating the front panel to open or close the storage case, force is applied to the tabs, which may be damaged.

[0008] The present invention has been made in consideration of the above-mentioned problems, and its object is to provide a transmitter having an internal telephone jack and an integrated indicator light, in which the front panel can be easily opened from the front of the transmitter to make the telephone jack accessible, while at the same time making it difficult to damage the fixing means for fixing the front panel to the case of the main body. Another object of the present invention is to provide a transmitter whose open front panel will not become removed and lost. It is still another object of the present invention to provide a transmitter which makes it easy to supply power to a front panel when the front panel is provided with electronic components such as lamps. [Means for solving the problem]

[0009] In order to solve the above problems, the present invention provides A transmitter comprising: a transmitter body portion having a storage case with an opening at the front portion and a built-in switch that can be turned on and off, the transmitter body portion being attached to an installation surface; and a front panel portion having a push button for operating the switch, a telephone jack is provided on the transmitter body so as to face the opening of the storage case; The front panel portion includes: A connecting member is interposed between the front panel portion and the storage case, and the storage case is configured to be convertible between a first state in which the opening of the storage case is closed and a second state in which at least a part of the opening of the storage case is opened and the telephone jack can be operated from the front, The front panel portion and the connecting member are removably connected by a first claw and a first claw receiver that can engage with the first claw, and the front panel portion is configured so that the engagement between the first claw and the first claw receiver is released by rotating the front panel portion.

[0010] According to the above configuration, in a transmitter having a transmitter main body portion with a switch and a telephone jack inside, and a front panel portion, rotation of the front panel portion disengages the first claw from the first claw receiver, releasing the front of the transmitter main body portion, thereby facilitating the opening operation of the front panel when using the telephone jack and making it difficult for the fixing means for fixing the front panel to the case of the main body portion to be damaged.

[0011] Here, it is preferable that a slide member is provided on the storage case so as to be movable in the front-rear direction, and the connecting member is connected to the slide member by a pin. According to this configuration, after the connection between the front panel and the storage case is released, the front panel can be moved forward by the slide member, so that the front of the transmitter main body can be opened widely, which makes it easier to work on the telephone jack. Also, because the front panel moves while connected to the slide member, it is possible to prevent the opened front panel from being removed and lost.

[0012] Also, preferably, the push button has a rod portion at a rear end for activating the switch, the front panel portion includes a base having an opening through which the rod portion of the push button is inserted, the base having a cylindrical portion on a rear surface of the base, the cylindrical portion having a diameter larger than that of the opening; the connecting member has a ring body into which the cylindrical portion of the front panel portion can be fitted, the ring body being rotatably connected by the sliding member, The first claw or the first claw receiver is formed on the base, and the first claw receiver or the first claw is formed on the ring body. According to this configuration, the front panel can be connected to the transmitter body by a connecting member having a relatively simple structure, so that the front panel can be easily attached and detached.

[0013] Also, preferably, the front panel portion and the storage case are detachably coupled to each other by a second claw and a second claw receiver that is engageable with the second claw, the first claw and the first claw receiver are configured to be engaged with each other by rotation of the front panel part in a first direction and to be disengaged with each other by rotation of the front panel part in a second direction; The second claw and the second claw receiver are configured to engage with each other when the front panel portion is rotated in a second direction, and to disengage from each other when the front panel portion is rotated in a first direction. With this configuration, it is possible to prevent the connection between the front panel portion and the connecting member from being accidentally released when the front panel portion is rotated to release the connection between the front panel portion and the transmitter main body portion.

[0014] Further, preferably, the push button has a rod portion at a rear end thereof for activating the switch, The front panel portion has an opening through which the rod portion of the push button is inserted, and is equipped with a base having a cylindrical portion on its rear surface which is larger in diameter than the opening, and a light-dissipating portion having a light guide plate and a light-emitting means for directing light into the light guide plate are disposed on the front surface of the base. With this configuration, it is possible to realize a transmitter in which the telephone jack is built into the main body of the transmitter and the indicator light is integrated into the front panel, and in such a transmitter, the front panel can be opened to make it easier to work on the telephone jack.

[0015] Furthermore, preferably, the second claw and the second claw receiver are formed from a conductive material, and power is supplied to the light emitting means via the second claw and the second claw receiver. With this configuration, power can be supplied to the light-emitting element on the front panel without connecting power supply wiring between the front panel and the transmitter main body, thereby reducing the cost of the transmitter with indicator light. Effect of the Invention

[0016] According to the transmitter of the present invention, in a transmitter having an internal telephone jack and an integrated indicator light, the operation of opening the front panel to make the telephone jack available from the front of the transmitter can be easily performed, and the fixing means for fixing the front panel to the main body case can be made less likely to be damaged. In addition, the opened front panel can be prevented from being removed and lost. Furthermore, when the front panel is equipped with electronic components such as a lamp, it is possible to easily supply power to the front panel. [Brief description of the drawings]

[0017] [Figure 1] 1 is an overall perspective view showing an embodiment in which the present invention is applied to a fire alarm transmitter; [Diagram 2] 2 is a cross-sectional perspective view showing the internal structure of the transmitter according to the embodiment of FIG. 1. [Diagram 3] 2 is a perspective view showing an embodiment of a front panel and a connecting member of the transmitter of the embodiment in FIG. 1. [Figure 4] 13A and 13B show the details of the connecting member, with FIG. 13A being an enlarged perspective view and FIG. [Diagram 5] 2A is a perspective view showing the front panel and transmitter body of the transmitter shown in FIG. 1, and FIG. 2B is an enlarged view showing a specific example of a coupling means consisting of an engagement claw and a claw receiver. [Figure 6] 2A to 2D are diagrams showing the procedure for opening the front panel of the transmitter of the embodiment of FIG. 1. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a fire alarm transmitter to which the present invention is applied will be described with reference to the drawings. The fire alarm transmitter of this embodiment (hereinafter simply referred to as the transmitter) has the function of sending a signal to a fire receiver notifying the occurrence of an abnormality when an abnormality such as a fire occurs by firmly pressing the push button on the front to turn on an internal switch, and is configured to be installed and used on the wall of a building or the door of a fire hydrant box.

[0019] FIG. 1 is an overall perspective view of a transmitter according to one embodiment of the present invention, and FIG. 2 is a cross-sectional perspective view showing the internal structure of the transmitter shown in FIG. 1 with its front panel section moved forward. As shown in FIG. 1, the transmitter 10 of this embodiment is composed of a transmitter main body 10 equipped with a box-shaped storage case 13 having an opening at the front and a push button switch inside, and a disk-shaped front panel 20 connected to the front of the transmitter main body 10, which has a push button (external protective plate) 21 that protects the push button switch located inside the center of the outer surface and has a light-emitting section 22 around it that functions as a position indicator light.

[0020] As shown in Fig. 2, the transmitter main body 10 is provided with a box-shaped storage case 13 that incorporates a push button switch 11 and a telephone jack 12 into which the plug at the end of the handset cord is inserted. A disk-shaped inner protective plate 14 is disposed in front of the push button switch 11 inside the storage case 13 (to the left in the figure) so as to be movable back and forth, and a compression spring 15 is disposed on the back of the inner protective plate 14 to urge the inner protective plate 14 forward. A circuit board 16 that detects when the push button switch 11 is turned on and sends a signal to the outside is disposed inside the storage case 13. The transmitter main body 10 is attached to the storage case 13 such that a flange portion 13a at the front end of the storage case 13 is joined to the installation surface.

[0021] Meanwhile, the front panel section 20 includes a disk-shaped base 22A joined so as to cover the outer opening of the storage case 13, a light guide plate 22B joined to the outer surface of the base 22A, and a cover member 22C joined to the outer surface of the light guide plate 22B. A push button 21 is disposed in the center of the front panel section 20 as an outer protective plate for protecting the push button switch 11, and a rod section 21a is formed on the back surface of the push button 21, protruding inward.

[0022] In addition, the base 22A of the front panel portion 20 has a bowl-shaped portion 22b with a double cylindrical engagement portion 22a having a U-shaped cross section on the inner end side, and further has a circular plate-shaped outer flat portion 22c around it, and a short cylindrical eaves portion 22d bent inwardly is formed on the periphery of the outer flat portion 22c. A retaining member 25 is disposed on the back of the main body plate 22A, and a cylindrical portion 25a protruding outward and inward is provided in the center of the retaining member 25, and the pressing rod portion 21a formed on the back of the push button 21 is inserted into this cylindrical portion 25a, so that the rear end of the rod portion 21a can abut against the front surface of the inner protective plate 14. Furthermore, a cylindrical engagement wall 25d that engages with the cylindrical engagement portion 22a of the main body plate 22A is provided on the periphery of the front surface of the retaining member 25.

[0023] An LED board 24 on which a plurality of light-emitting elements (LEDs: light-emitting diodes) 23 functioning as a light source are mounted with their emission portions facing outward is disposed on the front surface of the holding member 25. The push button 21 and the light guide plate 22B and cover member 22C of the light emitting portion 22 are formed of a light-guiding material having optical transparency such as acrylic resin, and are configured to guide the light from the light-emitting elements 23 mounted on the LED board 24 and emit it to the front surface to perform light-emitting display.

[0024] Furthermore, a slide plate 26 that slides along the upper surface of the bottom wall 13b is provided at the bottom of the storage case 13. Specifically, a rib-shaped guide rail is provided parallel to the bottom wall 13b at the lower part of the inner surface of the side wall of the storage case 13, and the side end of the slide plate 26 engages with a groove formed by this guide rail and the bottom wall of the storage case 13, allowing it to move in the front-rear direction while maintaining a horizontal position. A connecting member 27 for connecting the slide plate 26 to the base 22A is attached to the front end of the slide plate 26 so as to be tiltable about a pin inserted through the lower end thereof as a rotation axis.

[0025] Next, the joining structure between the connecting member 27 and the base 22A of the front panel unit 20 will be described with reference to Figures 3 and 4. Figure 3 shows the back surface of the front panel unit 20 and the connecting member 27 in detail when removed from the main body unit. 3, a cylindrical rib 25b is provided on the back surface of the holding member 25 that is fitted into the central opening of the base 22A that constitutes the front panel portion 20, and a pair of claws 25c are formed outwardly from the rib 25b. The claws 25c are formed so as to have a gap between them and the back surface of the holding member 25. The gap is approximately the same size as the thickness of a claw receiver 27c, which will be described later.

[0026] On the other hand, the connecting member 27 has a circular opening 27a through which the cylindrical portion 25a on the back surface of the front panel portion 20 is inserted, and a pair of notches 27b through which the pair of claws 25c can be inserted is formed at the edge of the opening 27a. A pair of claw receivers 27c are provided at the edge of the opening 27a near the notches 27b. A tapered wedge-shaped step portion 27d is formed at the end of the claw receiver 27c on the notch 27b side. The relationship between the claws 25c and the claw receiver 27c may be reversed from that described above, that is, the claws may be provided on the connecting member 27 and the claw receivers may be provided on the base 22A of the front panel portion 20.

[0027] According to the above-described connection structure, with the pair of claws 22g of base 22A aligned with the pair of notches 27b on the connecting member 27 side, front panel unit 20 is moved toward connecting member 27, and ring-shaped rib 22f is inserted into opening 27a of connecting member 27. Then, front panel unit 20 is slightly rotated in the direction of arrow A in FIG. Then, as shown in FIG. 4(A), the pair of claws 25c of the base 22A engage with the claw receivers 27c of the connecting member 27, and the front panel portion 20 is joined to the connecting member 27 and integrated.

[0028] As shown in FIG. 4B, the claw receiver 27c is formed with a slit 27e along the boundary between the cutout 27b and the inner peripheral wall surface, so that the claw receiver 27c can be easily elastically deformed. Furthermore, on the side farther from the notch 27b of the claw receiver 27c, a wall 27f for a rotation stopper is provided at a position allowing a margin of an angle for rotating the front panel portion 20 from a specified posture in order to release the connection between the front panel portion 20 and the transmitter main body portion 10.

[0029] Furthermore, when front panel unit 20 is rotated in the direction of arrow A, claw receiver 27c elastically deforms, and claw 25c of base 22A climbs over step portion 27d at the end of claw receiver 27c of connecting member 27, preventing movement in the opposite direction and making it difficult to remove front panel unit 20. At this time, step portion 27d at the end of claw receiver 27c is tapered, making it easier for claw 25c to climb over step portion 27d of claw receiver 27c, and once it has climbed over step portion 27d, it becomes difficult for claw 25c to move in the opposite direction.

[0030] On the other hand, to remove front panel unit 20 from connecting member 27 from the state shown in FIG. 4(A), front panel unit 20 is rotated in the direction of arrow B in FIG. 3 with a slightly stronger force, in the opposite manner to the above. Then, the pair of claws 25c of base 22A disengage from claw receivers 27c of connecting member 27, and claws 25c match with notches 27b, allowing front panel unit 20 to be moved forward and disengaged from connecting member 27. Incidentally, the operation of removing front panel unit 20 from connecting member 27 is performed with front panel unit 20 moved forward.

[0031] Next, the joining structure between the front panel section 20 and the transmitter body section 10 will be described with reference to Fig. 5. Note that in Fig. 5, the connecting member 27 is omitted from the illustration. As shown in Fig. 5(A), a pair of inverted L-shaped locking claws 22h are provided on the back surface of the base 22A constituting the front panel section 20 at positions facing each other across the cylindrical rib 25b on the back surface of the holding member 25. A pair of claw receivers 13c are provided at positions corresponding to the pair of locking claws 22h on the front surface of the flange section 13a of the storage case 13 constituting the transmitter main body section 10, and a guide hole 13d for guiding the locking claws 22h is formed. If the height of the claw receivers 13c is greater than the thickness of the head of the locking claw 22h, the guide hole 13d may be omitted.

[0032] FIG. 5(B) shows the relationship between the locking claw 22h and the claw receiver 13c. As shown by the solid line in Fig. 5(B), the head of the locking claw 22h is inserted into the guide hole 13d at the tip side of the claw receiver 13c, and then the front panel unit 20 is rotated to move in the direction of the arrow C. Then, as shown by the dashed line in Fig. 5(B), the head of the locking claw 22h enters between the claw receiver 13c and the flange portion 13a of the storage case 13. This results in the front panel unit 20 being coupled to the transmitter main body unit 10. Note that the relationship between the claw and the claw receiver may be reversed from that described above, i.e., the locking claw may be provided on the flange portion 13a of the storage case 13, and the claw receiver may be provided on the base 22A of the front panel unit 20.

[0033] In addition, a trapezoidal step 13e is provided on the inner surface of the claw receiver 13c, and when the head of the locking claw 22h overcomes this step 13e while elastically deforming the claw receiver 13c, the tip of the claw receiver 13c returns to its original position, and the step 13e acts to suppress the movement of the locking claw 22h in the opposite direction. At this time, since the step 13e is trapezoidal, when the front panel unit 20 is turned in the opposite direction with a little force, the head of the locking claw 22h overcomes the step 13e of the claw receiver 13c, and the connection between the front panel unit 20 and the transmitter main body unit 10 is released. Then, when the front panel unit 20 is pulled toward you in this state, the slide plate 26 moves forward, and the front surface of the transmitter main body unit 10 is released.

[0034] Furthermore, in the transmitter of this embodiment, the orientation of claw receivers 13c and 27c are set so that the direction in which front panel portion 20 is rotated to join front panel portion 20 to transmitter body portion 10 is opposite to the direction in which front panel portion 20 is rotated to join front panel portion 20 to connecting member 27 by the structure described in Fig. 3. This prevents the front panel portion 20 from accidentally becoming disconnected from connecting member 27 when front panel portion 20 is rotated to release the connection between front panel portion 20 and transmitter body portion 10.

[0035] As a specific example, in the installation state of FIG. 6(A) in which the front panel part 20 is connected to the transmitter main body part 10, when the front panel part 20 is rotated counterclockwise as shown in FIG. 6(B), the connection between the locking claw 22h and the claw receiver 13c is released. After that, when the entire front panel part 20 is pulled toward you, the front panel part 20 moves forward as shown in FIG. 6(C) and the gap with the transmitter main body part 10 widens. Next, when the upper part of the front panel part 20 is pulled toward you, the front panel part 20 tilts as shown in FIG. 6(D) and the front of the transmitter main body part 10 is released, exposing the telephone jack 12 and allowing the handset plug to be inserted from the front. The original installation state can be returned to by operating the front panel part 20 in the reverse order to the above.

[0036] As described above, the transmitter of this embodiment is configured so that the front of the transmitter main body 10 can be opened by rotating the front panel 20. Therefore, as long as one knows the operating procedures, anyone can easily operate the front panel to open or close the storage case without requiring any special skills, and there is also the advantage that there is no risk of the tabs being damaged by the large force applied to them when the front panel 20 is rotated. Also, the front panel section 20 can be completely removed from the transmitter body section 10, which has the advantage of facilitating handling during maintenance.

[0037] In addition, the transmitter of this embodiment does not require a door on the front panel 20 to cover the front of the telephone jack 12, so the number of parts on the front and the boundaries between the parts are reduced and the boundaries are less noticeable. Also, the entire front of the push button 21 and the light emitting portion 22 becomes a light emitting surface and emits light, so the boundary between the push button 21 and the light emitting portion 22 is less noticeable. Therefore, it is possible to improve the aesthetic appearance by blending in with the interior of the building and not creating a sense of incongruity, and since no door is required, even if the transmitter is made small, the light emitting section 22 can be made relatively large, and it is possible to avoid a decrease in visibility due to a decrease in the light emitting display area. Also, since there is no door, even if the entire transmitter is small, the push button 21 can be made relatively large, improving operability.

[0038] Although the above description has been given of the case where the locking claw 22h and the claw receiver 13c are used only as a means for connecting the front panel portion 20 and the transmitter body portion 10, the present invention is not limited to this. For example, a light-emitting element (LED) 23 that causes the light-emitting portion 22 to emit light is built into the front panel portion 20. Therefore, in order to supply power to the LED, it is necessary to extend a power supply wire between the storage case 13 and the front panel portion 20. However, supplying power to the front panel portion 20 through a wire poses the problem that the front panel portion 20 cannot be completely removed from the transmitter body portion 10.

[0039] Therefore, the locking claw 22h and the claw receiver 13c are formed from a conductive material, and the locking claw 22h is connected to the LED board 24 arranged in the front panel portion 20 by a lead wire or the like. Also, the circuit board 16 arranged in the storage case 13 is connected to the claw receiver 13c by a lead wire or the like. As a result, when the claw receiver 13c of the storage case 13 and the locking claw 22h of the front panel 20 engage with each other, power can be supplied to the LED board 24.

[0040] Although the present invention has been described above based on the embodiments, the present invention is not limited to the above-mentioned embodiments. For example, in the above-mentioned embodiment, the front panel section 20 and the storage case 13 of the transmitter main body section 10 are connected by the engagement between the claw and the claw receiver, but magnets may be provided instead of claws to connect them. Also, in the above-mentioned embodiment, the front panel section 20 is moved forward using the slide plate 26, but the front panel 20 may be moved forward by providing a link mechanism. Furthermore, in the above embodiment, the present invention has been described as being applied to a fire alarm transmitter that constitutes a fire alarm system, but the present invention is not limited to fire alarm transmitters and can be widely used in transmitters for emergency train stops installed on station platforms and railroad crossings, etc. [Explanation of symbols]

[0041] 10 Transmitter body 11 Push button switch 12. Telephone Jack 13 Storage case 13a Flange 13b Bottom wall 13c Claw holder 13d Guide hole 13e Step 14 Inner protection plate 15 Compression spring 16 Circuit Board 20 Front panel 21 Push Button 22 Light emitting part 22A Base 22B Light guide plate 22C Cover material 22a Cylindrical engagement part 22b Cone-shaped part 22c Outer flat area 22d Eaves 22h Locking claw 23 Light emitting element (LED) 24 LED board 25 Retaining member 25a Cylindrical part 25b Cylindrical rib 25c Claw 25d Cylindrical engagement wall 26 Slide Plate 27 Connecting members 27a aperture 27b Notch 27c Claw holder

Claims

1. A transmitter comprising: a transmitter body portion having a storage case with an opening at the front portion and a built-in switch that can be turned on and off, the transmitter body portion being attached to an installation surface; and a front panel portion having a push button for operating the switch, a telephone jack is provided on the transmitter body so as to face the opening of the storage case; The front panel portion includes: a connecting member interposed between the front panel portion and the storage case, the connecting member being capable of converting between a first state in which the opening of the storage case is closed and a second state in which at least a part of the opening of the storage case is open and the telephone jack can be operated from the front, A transmitter characterized in that the front panel portion and the connecting member are detachably connected by a first claw and a first claw receiver that can engage with the first claw, and the engagement between the first claw and the first claw receiver is disengaged by rotating the front panel portion.

2. A slide member is provided on the storage case so as to be movable in the front-rear direction, 2. The transmitter according to claim 1, wherein the connecting member is connected to the slide member by a pin.

3. the push button has a rod portion at a rear end for activating the switch, the front panel portion includes a base having an opening through which the rod portion of the push button is inserted, the base having a cylindrical portion on a rear surface of the base, the cylindrical portion having a diameter larger than that of the opening; the connecting member has a ring body into which the cylindrical portion of the front panel portion can be fitted, the ring body being rotatably connected by the slide member, 3. The transmitter according to claim 2, wherein the first claw or the first claw receiver is formed on the base, and the first claw receiver or the first claw is formed on the ring body.

4. the front panel portion and the storage case are detachably coupled to each other by a second claw and a second claw receiver that is engageable with the second claw, the first claw and the first claw receiver are configured to be engaged with each other by rotation of the front panel portion in a first direction and to be disengaged with each other by rotation of the front panel portion in a second direction; 3. The transmitter according to claim 1, wherein the second claw and the second claw receiver are configured to engage with each other when the front panel portion is rotated in a second direction, and to disengage from each other when the front panel portion is rotated in a first direction.

5. the push button has a rod portion at a rear end for activating the switch, the front panel portion includes a base having an opening through which the rod portion of the push button is inserted, the base having a cylindrical portion on a rear surface of the base, the cylindrical portion having a diameter larger than that of the opening; 5. The transmitter according to claim 4, further comprising a light emitting section having a light guide plate on a front surface of said base, and light emitting means for making light incident on said light guide plate.

6. The transmitter according to claim 5, characterized in that the second claw and the second claw receiver are formed of a conductive material, and power is supplied to the light-emitting means via the second claw and the second claw receiver.

Images