JP7716957B2 - Transmitter - Google Patents

Description

The present invention relates to an emergency alarm transmitter, and relates to technology that is effective for use in, for example, a fire alarm transmitter that is installed on the wall of a building and is operated to sound an alarm in the event of a fire.

A fire alarm system is installed inside buildings to alert people to the occurrence of a fire. The fire alarm system consists of fire detectors, manual fire alarm transmitters with push-button switches, receivers, fire alarm bells, indicator lights, etc., and the fire alarm transmitters are installed at an appropriate height on the walls of building corridors, etc. In the event of a fire, the discoverer presses the push-button switch on the fire alarm transmitter firmly, which transmits a signal notifying the fire to the receiver and sounds an alarm from a bell located near the transmitter, alerting people in the vicinity to the fire.

Conventional fire alarm transmitters typically have a disc-shaped front panel on the front of the transmitter body that covers the exposed areas inside the room. The transmitter body is equipped with the push-button switch mentioned above, a telephone jack to connect a handset to communicate with the fire alarm monitor, and a door that covers the front of the storage recess that houses the telephone jack and can be opened and closed as needed, and is installed so that it is embedded in the wall of a building. In addition, a bullet-shaped indicator light is provided near the fire alarm transmitter to make it easy to find from a distance or in the dark.

In recent years, flat-type indicator lights with flat or disc-shaped front surfaces, as well as fire alarm transmitters with integrated indicator lights, have also been put to practical use. Inventions relating to fire alarm transmitters with integrated indicator lights are described, for example, in Patent Documents 1 and 2.

Japanese Patent Application Laid-Open No. 2020-144951 Japanese Patent Application Laid-Open No. 2021-152944

The fire alarm transmitters described in Patent Documents 1 and 2 have an opening/closing door on the front panel of the transmitter that covers the front of the telephone jack, and are configured in a way that makes the boundaries between the indicator lights on the front and the push buttons and opening/closing door visually clear. However, in recent years, there has been an increasing demand for design within buildings, and transmitters with clearly visible boundaries between components have the problem of not blending in with the interior decor and creating a sense of incongruity when installed on the interior walls of a building.

The present invention was made in response to the above-mentioned issues, and its purpose is to ensure that a transmitter equipped with an internal telephone jack can access the telephone jack from the front of the transmitter, while reducing the boundaries between components to harmonize with the interior of the building and reduce the sense of incongruity, thereby improving the aesthetics.

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 and a built-in switch that can be turned on and off, and 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:
the front panel is connected to the storage case by a link mechanism provided between the front panel and the storage case,
The storage case is configured to be convertible between a first state in which the front opening of the storage case is closed and a second state in which at least a portion of the opening of the storage case is open and the telephone jack can be operated from the front.

The above configuration of the transmitter, which includes a transmitter main body with an internal switch and telephone jack and a front panel, provides a link mechanism between the front panel and the storage case, allowing the front panel to be moved to open the front of the transmitter main body. This means that the internal telephone jack can be converted into a usable state without providing a door on the front panel to cover the front of the telephone jack. This reduces the boundaries between components on the front of the transmitter, allowing it to blend in with the building's interior and lessen the sense of incongruity, thereby improving the aesthetics of the transmitter. Another advantage is that there is no door in front of the telephone jack, which helps prevent tampering.

Here, preferably, the link mechanism is a parallel link mechanism having a pair of arm members parallel to each other,
The front panel portion is configured to be convertible between the first state and the second state by the parallel link mechanism while maintaining a posture parallel to the installation surface.
With this configuration, the front panel can be moved while maintaining a parallel posture to the installation surface using the parallel link mechanism, thereby converting the front of the transmitter main body into an open state, thereby reducing the amount of forward protrusion of the front panel when it is in the open state, thereby making it easier to use the telephone jack.

Furthermore, it is desirable that two sets of the parallel link mechanisms are provided so as to sandwich the storage case.
According to this configuration, since there are two sets of parallel link mechanisms, it is possible to improve the stability of the conversion operation of the front panel portion and the durability of the link mechanisms.

It is also desirable that the arm member has a hole at its front end through which a pin that connects to the front panel portion can be inserted, and a long hole at its rear end in the longitudinal direction of the arm member through which a pin that connects to the storage case can be inserted.
With this configuration, a long hole is formed at the rear end of the arm member, making it possible to perform a two-stage operation by first pulling the front panel forward and then moving it parallel to the installation surface, thereby making it possible to smoothly open the front panel.

Furthermore, it is preferable that the storage case is provided with a protrusion that engages with the elongated hole in the first state.
According to this configuration, the front part of the transmitter main body can be locked and maintained in a closed state by the front panel with a simple configuration.

The link mechanism is configured by a slide member that is pin-connected to a predetermined portion of the front panel portion and is movable in the front-rear direction along the wall of the storage case,
The storage case is provided with a guide member that guides the slide member,
The front panel may be provided at a location different from the predetermined location with a locking piece that can be engaged with and disengaged from a locking portion provided at a corresponding location on the storage case.

With the above configuration, the front of the transmitter main body can be opened by pulling the front panel forward and rotating it, and the front panel of the transmitter main body can be locked and maintained in a closed state by engaging the locking piece on the top of the front panel with the locking part on the top of the storage case.

Preferably, the slide member is plate-shaped, and the guide member is configured as a rib-shaped guide rail that is provided on the wall of the storage case and forms a groove with which the side of the slide member can engage.
According to this configuration, a structure for guiding the slide member can be realized with a relatively simple configuration.

The transmitter of the present invention, which is equipped with an internal telephone jack, ensures that the telephone jack can be used from the front of the transmitter, while reducing the boundaries between components to blend in with the building's interior and reduce the sense of incongruity, thereby improving the aesthetic appearance.

1A and 1B are overall perspective views showing a first embodiment of the present invention when applied to a fire alarm transmitter, in which FIG. 1A shows a state in which the front panel is closed, and FIG. 1B shows a state in which the front panel is open. 1A shows the internal structure of the transmitter of the first embodiment, and FIG. 1B is a partially sectional side view showing the state in which the storage case of the transmitter body is cut away. 3A to 3C are cross-sectional side views showing the procedure for opening the front panel of the transmitter shown in FIG. 2. FIG. 10 is a cross-sectional structural view showing a second embodiment of a fire alarm transmitter to which the present invention is applied. 10A to 10C are cross-sectional structural views showing the procedure for opening the front panel of the transmitter of the second embodiment. 10 shows the internal structure of a fire alarm transmitter according to a third embodiment and the procedure for opening the front panel. 10 is a cross-sectional structural view showing the internal structure of a fire alarm transmitter according to a fourth embodiment and the procedure for opening the front panel. FIG. 10A and 10B are perspective views showing the procedure for opening the front panel of the fire alarm transmitter of the fourth embodiment. FIG. 11 is a front view showing the configuration of the front panel of the fire alarm transmitter of the fifth embodiment and the state in which the front panel is opened. FIG. 13 is a front view showing a modified example of the fire alarm transmitter of the fifth embodiment with the front panel open.

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 (hereinafter simply referred to as the transmitter) 10 of this embodiment has the function of transmitting a signal notifying the occurrence of an abnormality to a fire receiver when an abnormality such as a fire occurs by firmly pressing a 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.

(First Example)
Figures 1 to 3 show a transmitter according to a first embodiment. Of these, Figure 1 is an overall perspective view of the transmitter, Figure 2 is a cross-sectional side view showing the internal structure of the transmitter, and Figure 3 is a cross-sectional side view showing the procedure for opening the front panel of the transmitter shown in Figure 2.
As shown in FIG. 1A, the transmitter of the first embodiment comprises a box-shaped transmitter body 10 and a front panel 20 provided at the front of the transmitter body 10.

As shown in FIG. 1B, 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.
Meanwhile, front panel 20 has a circular push button 21 at the center of the front surface, and a ring-shaped light-emitting section 22 arranged around it. Push button 21 and light-emitting section 22 are made of a light-transmitting light-guiding material such as acrylic resin, and are configured to guide light from light-emitting element 17 arranged inside storage case 13 and emit it to the front surface, thereby providing a light-emitting display.

As shown in Figure 2 (A), a spring receiving member 14 having a recess on the opening side (left side in the figure) is fitted into the storage case 13 of the transmitter main body 10, and a slide member 16 having a spring storage section 16a for storing a compression spring 15 on the inside (right side in the figure) and movable along the peripheral wall of the spring receiving member 14 is fitted into the opening of this spring receiving member 14, and the back of the push button 21 is joined to the front surface of the slide member 16.
In addition, cylindrical inner and outer guide walls 14a and 14b are formed in the center of the spring support member 14, and a pressing portion 16b that fits into the guide wall 14a is formed in the center of the inner surface of the slide member 16, and the spring storage portion 16a that is double cylindrical and inserted into the inner and outer guide walls 14a and 14b is formed around this pressing portion 16b.

Furthermore, the actuator portion 11a of the push button switch 11 stored in the storage case 13 of the transmitter main body portion 10 is inserted into the outer guide wall 14b of the spring receiving member 14 and arranged so as to face the pressing portion 16b.
Furthermore, the spring support member 14 and the slide member 16 are arranged so as to have a gap δ, and when the push button 21 is pressed toward the transmitter main body 10, the slide member 16 moves, and the pressing portion 16b comes into contact with and presses the actuator portion 11a, thereby closing the contacts of the switch 11 and turning it on.

The spring bearing member 14 can be configured such that a plurality of screw insertion holes are formed in the front plate portion 14c and screws are inserted through these screw insertion holes to connect to the front panel 20. The front plate portion 14c is formed at the open end of the spring bearing member 14, and a circular light emitting portion 22 made of a light-guiding material is joined to this front plate portion 14c. Meanwhile, a canopy portion 22b is provided at the outer edge of the light emitting portion 22 to cover the outer peripheral surface of the front plate portion 14c of the spring bearing member 14.
Furthermore, on the front side of the outer edge of the slide member 16, as shown by the dashed lines in FIG. 1, a plurality of light-emitting elements (LEDs) 17 (eight in the figure) are arranged at predetermined angular intervals in a row around the push button 21 in the circumferential direction.

In addition, the disc-shaped push button 21 has a pressing portion 21a in the center that fits into the central opening of the annular light-emitting portion 22, and a flange portion 21b is provided on the outer periphery of the back side, and a plurality of light-introducing portions 21c consisting of columnar protrusions that protrude toward the rear are formed at the portion of the peripheral portion of this flange portion 21b that faces the light-emitting element 17.
The light-emitting element 17 emits light of red, similar to conventional indicator lights, for example. Instead of using a red light-emitting element, a white light-emitting element may be used, and a red-colored light-guiding material may be used to form the push button 21 and the light-emitting portion 22. The push button 21 may be made of an opaque material, with the light-emitting portion 22 being provided with a light-introducing portion whose end face protrudes to face the light-emitting element 17, and only the light-emitting portion 22 may be illuminated. Furthermore, although the push button 21 and the light-emitting portion 22 have been described as being made of a light-guiding material such as glass or a light-transmitting resin such as an acrylic resin, this light-guiding material may contain a particulate diffusing material mixed therein.

As shown in FIG. 2(B), in the transmitter of this embodiment, the ends of a pair of parallel arms 28A, 28B closest to the front panel 20 are connected to the side of the spring bearing member 14 by pins 27A, 27B, and pins 29A, 29B embedded in the side of the storage case 13 of the transmitter main body 10 engage with elongated holes 28a, 28b formed in the other ends of the arms 28A, 28B, forming a parallel link mechanism. Although not shown, a similar parallel link mechanism is also provided on the opposite side. In other words, there are two pairs of arms 28A, 28B that make up the parallel link mechanism.

As a result, as shown in FIG. 3, the front panel 20 can be rotated downward while maintaining a vertical position, exposing the telephone jack 12 provided in the storage case 13 and allowing the handset plug to be inserted from the front.
Moreover, at this time, since long holes 28a, 28b into which pins 29A, 29B engage are formed at the ends of the pair of arms 28A, 28B constituting the link mechanism on the rotation center side, the front panel 20 can be first pulled out and moved forward as shown in Figure 3(A), and then rotated downward as shown in Figure 3(B).

Furthermore, as shown in Figure 2(B), the side of the storage case 13 is provided with a protrusion 29C whose diameter is approximately the same as the width of the elongated hole 28a at the end of the arm 28A. When the arms 28A and 28B are rotated to the upper position, the protrusion 29C engages with the elongated hole 28a to prevent rotation. This prevents the front panel 20 from rotating downward due to its own weight. The tip of the protrusion 29C is formed in a hemispherical shape, so that when the front panel 20 is pulled strongly toward you in the state shown in Figure 2(B), the protrusion 29C disengages from the elongated hole 28a at the end of the arm 28A, allowing the panel to rotate.

The transmitter can be attached to a wall or mounting panel as an installation surface by, for example, forming an opening in the wall or mounting panel through which the storage case 13 can be inserted and providing screw holes around the opening, inserting the storage case 13 into the opening and joining the flange portion 13a to the wall or mounting panel, and then threading screws into the screw holes in the flange portion 13a and into the screw holes around the opening in the mounting panel. Alternatively, a male thread can be formed on the outer periphery of the opening end of the storage case 13, and the ring-shaped nut described in the aforementioned prior patent document 2 can be threaded onto this male thread, and the mounting panel can be sandwiched between the ring-shaped nut and the flange portion 13a or front plate portion 14c.

As described above, the transmitter of this embodiment is configured so that the front panel 20 can be moved downward to expose the telephone jack 12, eliminating the need to provide a door on the front panel 20 to cover the front of the telephone jack 12. This reduces the number of components on the front and the boundaries between the components, making the boundaries less noticeable. Furthermore, the entire front of the push button 21 and the light emitting portion 22 serves as a light emitting surface and emits light, making the boundary between the push button 21 and the light emitting portion 22 less noticeable.
Therefore, it blends in with the interior of the building, is less likely to feel out of place, and improves the aesthetics, and since no door is required, even if the transmitter is made smaller, the light-emitting section 22 can be made relatively large, preventing the light-emitting display area from becoming smaller and reducing visibility. Furthermore, because there is no door, even if the transmitter as a whole is small, the push button 21 can be made relatively large, improving operability.

(Other Examples)
Figures 4 to 10 show other embodiments of the transmitter of the present invention. Of these, Figures 4 and 5 are cross-sectional views of the transmitter of the second embodiment, Figure 6 is a cross-sectional view of the transmitter of the third embodiment, Figures 7 and 8 are cross-sectional views of the transmitter of the fourth embodiment, and Figures 9 and 10 are front views of the fifth embodiment and its modified example.
As shown in FIG. 4, the transmitter of the second embodiment, like the transmitter of the first embodiment (FIG. 1), is composed of a transmitter main body 10 equipped with a storage case 13 incorporating a push-button switch 11, and a front panel 20 having a circular push-button 21 at the center of the front surface and a ring-shaped light-emitting portion 22 surrounding the push-button 21.

In the second embodiment, a flange 21b is provided on the front side of the push button 21, and a pressing portion 21g of the switch 11 and a sleeve member 21f surrounding it are provided on the back side so as to protrude rearward. In addition, a holding member 25 corresponding to the slide member 16 and spring bearing member 14 of the transmitter in the first embodiment (FIG. 1) is provided integrally with the back side of the front panel 20.
Furthermore, a pair of pressing members 24a, 24b biased toward the center by compression springs 15a, 15b are arranged perpendicular to the central axis so as to sandwich sleeve member 21f, and tapered portions that contact each other and form the same angle are provided on the tips of pressing members 24a, 24b and the outer circumferential surface of sleeve member 21f, so that the push button 21 is pushed forward by a component of the restoring force acting on the tapered portions from the compression springs. When push button 21 is pressed from the front, it moves rearward against the spring force, and a cylindrical pressing portion 21g on the back surface abuts against and depresses actuator portion 11a of push button switch 11, turning switch 11 on.

Furthermore, in the second embodiment, the sleeve member 21f of the push button 21 is fitted into a cylindrical member 25b, which corresponds to the outer guide wall 14b of the spring support member 14 in the first embodiment, of the holding member 25, and is guided in the front-to-rear direction, and a light-emitting element 17 is arranged behind the flange portion 21b of the push button 21.
Furthermore, holding member 25 is joined to front panel 20 with front plate portion 25c on the front end side joined to the back surface of light emitting portion 22, and is provided at its lower portion with a slide plate 26 that protrudes rearward and slides along the inner surface of the bottom wall of storage case 13. Rib-like guide rails 13b are provided at the lower part of the inner surface of the side wall of storage case 13 parallel to the bottom wall, and the side ends of slide plate 26 engage with grooves formed by guide rails 13b and the bottom wall of storage case 13, thereby supporting and allowing movement forward while maintaining a horizontal position, as shown in Figure 4(B) .

Although not shown, the lower side wall of the holding member 25 is rotatably connected to the front end of the slide plate 26 by a pin, and as shown in Figure 5(A), by tilting the front panel 20 while pulled forward, the front of the storage case 13 can be opened to expose the telephone jack (not shown) inside. Furthermore, if the upper part of the flange portion 13a of the storage case 13 has screw insertion holes 13c through which screws for securing the storage case 13 to the mounting panel can be inserted, tilting the front panel 20 forward exposes these screw insertion holes 13c, allowing the mounting screws to be operated from the front.

A locking piece 25d that protrudes rearward is provided at the rear end of the upper wall of the holding member 25, and an engagement hole 13d is formed in the storage case 13 at a corresponding position. The hook at the tip of the locking piece 25d can be engaged with the engagement hole 13d to lock the front panel 20 so that it does not move forward. The hook at the tip of the locking piece 25d can be disengaged from the engagement hole 13d by pulling the top end of the front panel 20 toward you. Instead of pulling the top end of the front panel 20 toward you, the front panel 20 may be rotated to disengage the hook at the tip of the locking piece 25d from the engagement hole 13d and release the lock.

Furthermore, a mountain-shaped bent portion 13e that protrudes upward is provided at the front end of the guide rail 13b, and a notch through which a rib can pass is provided at the rear end of the slide plate 26, so that the front end of the slide plate 26 can be rotated upward as shown in Figure 5 (B), and the screw insertion hole 13c formed at the bottom of the flange portion 13a of the storage case 13 is exposed, allowing the mounting screw to be operated from the front.
In the second embodiment, the light-emitting section 22 constituting the front panel section 20 is composed of a light-guiding member 22A having a light-introducing section 22c formed in a position facing the plurality of light-emitting elements 17 on the LED substrate 19, and a light-transmitting cover member 22B that covers the surface of the light-guiding member 22A. Of these, the light-guiding member 22A has a curved surface on the front side and a flat surface on the back side, and a reflective layer is formed on this flat surface by light-reflecting processing.

The cover member 22B is composed of a shape-retaining member made of a soft material such as silicone resin that is translucent and can retain its shape, and a light-diffusing film made of a flexible material such as a synthetic resin sheet or cloth that is provided to cover the surface of the shape-retaining member. The cover member 22B is formed so that the canopy portion 22b at the outer edge of the light-guiding member 22A covers the side and back.
As a result, even if an external impact is applied to the cover member 22B, the shape-retaining member deforms to absorb the impact and prevent damage to the surface. Furthermore, because the surface of the shape-retaining member is covered with a light-diffusing film, the light guided by the light-guiding member 22A is diffused and emitted forward, giving it a soft, hazy texture. Furthermore, because the surface side of the front panel portion 20 is curved, the design is improved, and the transmitter blends in well with the interior of the building in which it is installed, making it less likely to look out of place.

The transmitter of the third embodiment shown in Figure 6 has a front panel 20 having a similar configuration to the transmitter of the second embodiment (Figure 4), and is provided at the bottom with a slide plate 26 that protrudes rearward and slides along the inner surface of the bottom wall of the storage case 13. In addition, a rib-like guide rail 13b is provided at the lower part of the inner surface of the side wall of the storage case 13, parallel to the bottom wall.
The differences from the second embodiment are that the retaining member 25 provided on the front panel portion 20 is not present, and instead in the third embodiment a member similar to the slide member 16 (FIG. 2) in the first embodiment is provided on the front panel portion 20 side, and that a member similar to the spring receiving member 14 (FIG. 2) in the first embodiment is provided on the storage case 13 side, and that compression springs 15a, 15b are provided parallel to the pressing direction of the push button 21, as in the transmitter of the first embodiment.

In addition, a locking claw 16e that protrudes rearward is provided on the back surface of the slide member 16 on the front panel portion 20 side, and a locking piece 14e is provided at a corresponding position on the front end of the upper wall of the spring support member 14, so that the front panel 20 can be locked so that it does not move forward by engaging the locking claw 16e with the claw at the tip of the locking piece 14e.
In this embodiment, as in the transmitter of the second embodiment, by tilting the front panel 20 while it is pulled forward, the front of the storage case 13 can be opened to expose the telephone jack (not shown) inside, as shown in Fig. 6(C). Also, screw insertion holes 13c, which are formed in the upper and lower parts of the flange portion 13a of the storage case 13 and through which the mounting screws are inserted, can be exposed, allowing the screws to be operated from the front.

The transmitter of the fourth embodiment shown in Figure 7 has a rotating shaft 27 that protrudes rearward from the upper back surface of the front panel 20, and a shaft support 13f with a hole into which the rotating shaft 27 can be inserted is provided at the top of the storage case 13. As a result, after pulling the front panel 20 forward as shown in Figure 7(B), the front panel 20 can be rotated around the rotating shaft 27 as shown in Figure 7(C), thereby opening the front end opening of the storage case 13 and exposing the telephone jack 12 as shown in Figure 8(B).

As shown in Figures 9 and 10, the transmitter of the fifth embodiment is configured so that the front panel 20 can be divided into two halves, left and right, in the center. By moving or rotating the front panel 20 left and right, part of the front end opening of the storage case 13 can be seen from the front, exposing the telephone jack 12 and screw insertion hole 13c.

The present invention has been described above based on an embodiment, but it is not limited to the above embodiment. For example, in the first embodiment, the arms 28A and 28B that make up the link mechanism are rotatable in a vertical plane to translate the front panel 20 up and down, but the arms 28A and 28B may be rotatable in a horizontal plane to translate the front panel 20 left and right. The same applies to the second embodiment. Furthermore, in the above embodiment, the arms 28A and 28B that make up the link mechanism are provided between the front panel 20 and the side wall of the storage case 13, but they may also be provided between the front panel 20 and a portion other than the side wall of the storage case 13 (for example, the flange portion 13a).

Furthermore, in the above embodiment, the present invention has been described as being applied to a transmitter in which the transmitter body and the light-emitting display unit (light-emitting unit) are integrally configured, but the present invention can also be applied to conventional types of transmitters that do not have a light-emitting display unit.
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 that are installed on station platforms or at railroad crossings, etc.

REFERENCE SIGNS LIST 10 Transmitter main body 11 Push button switch 12 Telephone jack 13 Storage case 14 Spring receiving member 15, 15a, 15b Compression spring 16 Slide member 16a Spring storage section 17 Light emitting element 20 Front panel section 21 Push button 22 Light emitting section 24a, 24b Pressing member 25 Holding member 26 Slide plate 27 Rotating shaft 28A, 28B Link mechanism arm 28a, 28b Slot 29A, 29B Pin 29C Protrusion

Claims (7)

A transmitter comprising: a transmitter body portion having a storage case with an opening at the front and a built-in switch that can be turned on and off, and attached to an installation surface; and a front panel portion having a push button for activating 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:
the front panel is connected to the storage case by a link mechanism provided between the front panel and the storage case,
A transmitter characterized in that it is configured to be convertible between a first state in which the front opening of the storage case is closed and a second state in which at least a portion of the opening of the storage case is open and the telephone jack can be operated from the front. the link mechanism is a parallel link mechanism having a pair of arm members parallel to each other,
2. The transmitter according to claim 1, wherein the front panel portion is configured to be convertible between the first state and the second state while maintaining a posture parallel to the installation surface by the parallel link mechanism. A transmitter as described in claim 2, characterized in that two sets of the parallel link mechanisms are provided, sandwiching the storage case. A transmitter as described in claim 2 or 3, characterized in that the arm member has a front end formed with a through-hole for a pin that connects to the front panel, and a rear end formed with a long hole extending in the longitudinal direction of the arm member through which a pin that connects to the storage case can be inserted. The transmitter described in claim 4, characterized in that the storage case is provided with a protrusion that engages with the elongated hole in the first state. the link mechanism is configured by a slide member that is pin-connected to a predetermined portion of the front panel portion and is movable in the front-rear direction along a wall of the storage case,
The storage case is provided with a guide member that guides the slide member,
2. The transmitter according to claim 1, wherein a locking piece that can be engaged with and disengaged from a locking portion provided at a corresponding portion of the storage case is provided at a portion of the front panel different from the predetermined portion. The transmitter described in claim 6, characterized in that the sliding member is plate-shaped, and the guide member is configured as a rib-shaped guide rail provided on the wall of the storage case and forming a groove into which the side of the sliding member can engage.