JP2003272481A - Prism for piano handle type switch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a prism for a piano handle type switch capable of realizing bright light emission display. <P>SOLUTION: This prism 50 is arranged on a rear surface side of a piano handle by letting an outgoing face 51 oppose to a light emission display part of the piano handle. Side protruding prism parts 57, 57 are provided on both up and down sides from a rear side of the outgoing face 51 of the prism 50. Incoming faces 53, 52 allowing light from a light penetration window of a push button switch to enter are formed in accordance with three mounting positions for a mounting frame of the push button switch, respectively, on a rear side of each side protruding prism part 57 and on a rear side of the outgoing face 51. Reflection faces 58a, 58b for introducing light from the incoming face 53 of each side protruding prism part 57 onto the outgoing face are formed therein. Projecting curved faces are formed on the incoming face 53 of each side protruding prism part 57 and on the incoming face 52 on the rear side of the outgoing face 51 so that light from the light penetration window of the push button switch becomes substantially parallel light therein. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a prism for a piano handle type switch used in a piano handle type switch for switching a contact point of a contact portion by a piano touch operation.

[0002]

2. Description of the Related Art Conventionally, a piano handle type switch as shown in FIG. 15 has been known. This piano handle type switch includes a push button switch 1 which is adapted to switch a contact portion (not shown) housed therein when the push button handle 4 is pushed, and the push button handle mounted above the push button switch 1. 4 is provided with a piano handle 30 that is pressed by a piano touch operation, and the contact portion of the push button switch 1 is switched by the piano touch operation of the piano handle 30.

Inside the push button switch 1, a light emitting means (not shown) for displaying the position or operating state of the push button switch 1 is built in, and the light emitting means is provided on the surface facing the piano handle 30. A transparent window 7 is provided for guiding the emitted light to the outside. The piano handle 30 is provided with an opening 30a penetrating the front and back at a portion facing the translucent window 7. The opening 30a is made of a light transmissive resin and is displayed by light emitted from the translucent window 7. The part 40 is applied. Further, a concave flat surface 35 is provided on the front surface side of the piano handle 30, and a window 36 for inserting and removing the name card 38 is provided at the bottom of the concave flat surface 35, and the window 36 is opened and closed from the rear surface side of the piano handle 30. A freely pivoted door 37 is provided, and a central portion 3 is provided on the concave plane 35 so that a name card 38 corresponding to at least a window 36 can be seen.
A transparent name cover 39 is attached to 9a.

This push button switch 1 is embedded and fixed in a construction surface such as a wall surface by using a mounting frame 100 as shown in FIG. The mounting frame 100 has an elongated mounting window 100a, and up to three pushbutton switches can be mounted at upper, middle, and lower mounting positions along the longitudinal direction of the mounting window 100a. A plate 110 (a plate frame 120 and a decorative plate 130) having an opening window that is longer and wider than the mounting window 100a of the mounting frame 100 is provided on the front side of the mounting frame 100.
Consists of) are placed in a stack. Plate frame 12
Reference numeral 0 is a rectangular frame shape, and the plate screw insertion holes 121, 121 are provided on both side pieces along the short width direction, and the plate screws 123, 123 inserted into the insertion holes 121, 121 are provided.
The plate frame 120 is attached to the front surface side of the mounting frame 100 by screwing into the screw holes 100c, 100c of the mounting frame 100. In addition, three locking holes 122 are formed on each of both side pieces along the longitudinal direction of the plate frame 120, and locking claws (not shown) protruding from the back surface of the decorative plate 130 are engaged with the locking holes 122. When stopped, the decorative plate 130 is mounted on the front side of the plate frame 120.

When the three push button switches 1 are attached to the upper, middle, and lower attachment positions of the attachment frame 100, the piano handle 30 is a handle for three attached to the push button switches 1 at the respective attachment positions. The size of the piano handle 30 along the longitudinal direction of the opening window of the plate 110 is set to about 1/3 of the longitudinal dimension of the opening window. By making the pushbutton switch 1 larger than the width of the pushbutton switch 1,
The operability of the handle is improved.

As described above, since the size of the piano handle 30 along the longitudinal direction of the window hole of the plate 110 is formed wider than the size of the push button switch 1, the push button switch 1 is placed at the center of the mounting frame 100. When mounting at the mounting position, the center position of the push button switch 1 and the piano handle 30
The piano handle 30 is attached to the push button switch 1 in accordance with the center position of the push button switch 1. However, when the push button switch 1 is attached to the upper or lower attachment position of the attachment frame 100, the center position of the piano handle 30 is attached to the push button switch 1. The push button switch 1 is attached so as to be displaced upward or downward with respect to the center position of 1. Thus, depending on whether the push button switch 1 is attached to the upper, middle, or lower position.
Since the relative positional relationship between the translucent window 7 of the push button switch 1 and the light emitting display unit 40 attached to the piano handle 30 is different, the light emitting means emits light no matter which position the piano handle 30 is attached. A prism for a piano handle type switch (hereinafter, simply referred to as a prism) for guiding light from the translucent window 7 of the push button switch 1 to the light emitting display unit 40 on the back side of the piano handle 30 so that the light can be incident on the light emitting display unit 40. 50) is provided.

The prism 50 is formed of a light-transmissive resin. As shown in FIG. 17, the prism 50 is attached to the piano handle 30 by heat bonding or the like so that the emitting surface 51 faces the light emitting display section 40 provided on the piano handle 30. is there. Prism 5
From the back side of the exit surface 51 of 0, side protruding prism portions 57 are provided toward the upper and lower sides, and the side protruding prism portions 57 are provided on the back side of the upper push button switch 1 or the lower push button. An incident surface 53 for entering the light from the switch 1 is provided,
Light entering the inside from the incident surface 53 is projected laterally to the prism portion 5.
The light is reflected by the reflection surfaces 58a and 58b in the optical path 7 and emitted from the emission surface 51. Further, an entrance surface 52 on which light from the light emitting display section 40 of the push-button switch 1 mounted in the center enters is provided behind the exit surface 51, and the inner wall surfaces on both sides of the recess of the entrance surface 52 are prisms. It serves as the above-mentioned reflection surface 58b of the light guided in the inside 50.

[0008]

SUMMARY OF THE INVENTION The prism 5 having the above structure.
0, the incident surface 53 provided on each side-projecting prism portion 57
Is a flat surface, the transparent window 7 of the push button switch 1
When the diffused light from the plane of incidence enters the incident surface 53, the prism 5
The light traveling in 0 does not become parallel light, and a part of the incident light is reflected by the reflecting surfaces 58a and 58b in a direction different from that of the light emitting display unit 40, and as a result, the light emitting display unit 40.
There is a problem in that the amount of light guided from the outside to the outside decreases, and the luminescent display becomes dark.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a piano handle type switch prism having a bright light emission display.

[0010]

In order to achieve the above object, in the invention of claim 1, a push button switch adapted to switch a contact portion housed therein according to a pushing operation of a push button handle, The push button switch is equipped with a piano handle which is mounted on the front side of the push button switch and pushes the push button handle by a piano touch operation. It is used for a piano handle type switch that has a transparent window for guiding outside from the side surface, and a piano handle is provided with a light emitting display section that emits light by light emitted from the transparent window. A piano handle-type switch prism for guiding light from the light-transmitting window of each push-button switch to the light-emitting display section, which is provided to the light-transmitting window. A reflection surface that guides the light from the incident surface to the emission surface facing the light emitting display section is provided inside, and a convex curved surface is formed on the incident surface so that the light from the light-transmitting window becomes substantially parallel light inside. It is characterized by

According to a second aspect of the present invention, in the first aspect of the present invention, the push button switch has an elongated attachment window for attaching an instrument, and has three upper, middle and lower attachment windows along the longitudinal direction of the attachment window. The piano handle is arranged on the construction surface using a mounting frame provided with mounting positions, and the piano handle can be mounted on the push button switch at each mounting position when the push button switches are mounted at the three mounting positions of the mounting frame. It is a handle for each individual, and side protruding prism parts are extended from the back side of the emitting surface to both upper and lower sides, and push button switches are provided on the back side of each side protruding prism portion and the back side of the emitting surface. The light-incident surface from which the light from the light-transmitting window of the push-button switch is incident is formed according to the three mounting positions with respect to the mounting frame, and the light-reflecting surface that guides the light from the light-incident surface of each side-projecting prism portion to the light-exiting surface Formed inside and at least on each side To the formation of the convex curved surface on the incident surface of the prism portion out and said.

A third aspect of the present invention is characterized in that, in the first or second aspect of the present invention, the exit surface is provided with a prism portion that makes the light from the exit surface obliquely upward.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the prism portion is composed of a plurality of concave and convex portions provided on the emission surface along the vertical direction in the state of being attached to the construction surface. It is characterized in that the upper surface is an inclined surface that inclines downward toward the front.

The invention of claim 5 is characterized in that, in the invention of claim 4, the lower surface of the convex portion is a flat surface which is substantially horizontal.

According to a sixth aspect of the present invention, in the fourth or fifth aspect of the present invention, at least one of the tip end surface of the convex portion and the bottom surface of the concave portion is a flat surface whose normal direction is substantially horizontal. Characterize.

According to a seventh aspect of the invention, in the fourth or fifth aspect of the invention, at least one of the tip surface of the convex portion and the bottom surface of the concave portion is formed into a curved surface.

According to an eighth aspect of the present invention, in the invention according to any one of the third to seventh aspects, a flat surface whose normal direction is substantially horizontal is provided on a part of the emission surface, and a portion other than the flat surface is provided. It is characterized in that the above-mentioned prism portion is formed.

[0018]

(First Embodiment) A first embodiment of the present invention will be described with reference to the drawings. First, the basic structure of the piano handle type switch will be described. As shown in FIGS. 5 to 11, this piano handle type switch has a push button switch 1 whose contacts are switched by pressing the push button handle 4, and one end of which is rotatable on the upper surface of the push button switch 1. And a piano handle 30 which is pivotally supported by and pushes the other end to push the push button handle 4.

The body of the push button switch 1 is formed of a synthetic resin body 2 and a cover 3, and is formed in a module size of a standardized ready-made embedded wiring device. The cover 3 which is a member on the front surface side of the push button switch 1 has a mounting frame 10 used when a ready-made wiring device is embedded.
0, the pair of locking claws 8 and 8 are respectively locked in the mounting holes 100b of the mounting frame 100 so as to be detachably mountable.
Are formed on both end surfaces, and a cavity 9 is formed in the back portion of one of the locking claws 8 so that the locking claw 8 can elastically bend backward. Therefore, the push button switch 1 can be removably attached by engaging the locking claw 8 with the mounting frame 100 for a ready-made wiring tool, and a construction surface such as a wall surface can be mounted in the same manner as the ready-made embedded wiring tool. It can be buried in. It should be noted that the body 2 and the cover 3 are coupled to each other by locking the locking projections 6 formed on the side surface of the body 2 into the locking holes 5a of the locking pieces 5 hanging from the cover 3. Sometimes, the elasticity of the locking piece 5 and the inclined surface 6a at the upper end of the locking projection 6 can be used for easy locking.

In the body 2 of the push button switch 1, a connection terminal storage portion 2a is formed at one end, a connection terminal storage portion 2b is formed at the other end, and a central storage portion 2c is formed at the center. There is. Each of the connection terminal housings 2a and 2b has a terminal plate 12, 13 in which a locking spring 10 is installed.
Are stored respectively. Reference numeral 11 in the figure denotes a release button for the two locking springs 10 arranged on both sides of the body 2. And
The terminal plates 12 and 13, the locking spring 10 and the release button 11 constitute a quick-connect terminal.

Here, the terminal plate 13 is formed with an extending piece 13a to which the fixed contact 14 is fixed, and the extending piece 13a is formed.
Extends toward the central storage portion 2c close to the partition wall 2d, and the fixed contact 14 is located in the central storage portion 2c. Further, a support piece 12a extends from the terminal board 12 to the central storage portion 2c, an opening / closing body 15 made of a conductor is put in the central storage portion 2c, and the lower end of the opening / closing body 15 rotates on the support piece 12a. V-shaped recesses 2 are provided upright freely, and projecting parts provided at lower ends of both ends of the opening / closing body 15 are formed on the inner wall of the central storage part 2c.
It is fitted in e and is rotatable around the lower part of the V-shaped recess 2e. A movable contact 16 is provided on the opening / closing body 15, and the movable contact 16 is brought into contact with or separated from the fixed contact 14 in accordance with the rotation of the opening / closing body 15 to connect the terminal plate 12 and the terminal plate 13 to each other.
Cut off.

In this embodiment, the fixed contact 14 and the movable contact 16 form the contact portion S as described above. The opening / closing body 15 for opening and closing the contact portion S is configured to be operated by reversing and rotating the reversing handle 17. That is, the lower portion of the reversing handle 17 is provided with a cylindrical portion 17a that opens downward, and the upper portion of the coil spring 18 is housed in the lower cylindrical portion 17a of the reversing handle 17, and the lower portion of the coil spring 18 is The opening / closing body 15 is engaged with the upper edge of the opening / closing body 15, and the opening / closing body 15 is driven to be reversed in accordance with the rotation of the reversing handle 17.

The reversing handle 17 has bearings 3 formed on the inner wall of the cover 3 with shafts 17b of inverted triangle shape provided on both sides.
Engagement protrusions 17c that engage with the slide cams 19 are provided at both ends of the upper part so as to be pivotally attached to a and pivotally attached. The push button handle 4 is attached to the cover 3 so as to be vertically movable, and is constantly urged upward by a return spring 20 arranged below. Engaging cam bodies 19b, 19b slidably engaged with the engaging protrusions 17c, 17c of the reversing handle 17 are formed on the lower surfaces of both ends of the slide cam 19, and the slide cam 19 is slidably mounted on the lower surface side of the push button handle 4. The slide cam 19 has a protrusion 4a provided on the lower surface of the push button handle 4 inserted between a pair of C-shaped spring pieces 19a provided therein, and the spring piece 19a gives a restoring force to the slide cam 19. ing.

As shown in FIG. 5, at the end of the cover 3 of the body of the push button switch 1 on the front surface side, two laterally oriented shaft portions 21 are provided integrally with each other at a predetermined interval. The shafts 21 have a substantially columnar shape with the upper part facing sideways. As shown in FIG. 7 (a), the piano handle 30 has a bearing portion 31 including a hole 31a whose lower opening is a fitting opening portion at one end of the back surface portion and a metal bearing spring body 31b.
Is provided. The hole 31a is provided with a locking hole 32 on one side of the inner wall, and the retaining spring 31b of the bearing spring body 31b housed in the hole 31a is locked to hold the bearing spring body 31b. The bearing spring body 31b is formed by bending the tip so as to project into the hole 31a, and the projecting portion 31d and the hole 31a are formed.
The shaft portion 21 is supported by and. The bearing portion 3 provided on the back surface of one end of the piano handle 30
Four 1s are provided at a predetermined interval corresponding to the pair of shaft parts 21 at a predetermined interval, and the bearing spring bodies 31b corresponding to the two bearing parts 31 on both sides thereof are integrally connected.

The fitting opening of the hole 31a opened downward is narrower than the inside of the bearing portion 31 due to the projection 31d, and the shaft portion 21 provided above the push button switch 1 is shown in FIG. When it is elastically fitted as shown in b), the pivotal connection between the shaft portion 21 and the bearing portion 31 is prevented from being disengaged. In this manner, the shaft portion 21 is rotatably fitted into the bearing portion 31 to form a pivotally supporting portion that pivotally supports the piano handle 30. The piano handle 3
At the other end of 0, a retaining piece 33 for retaining is provided so as to project backwards. The retaining piece 33 is inserted into the cavity 9 so that the tip of the retaining piece 33 does not come off from the cavity 9 even if the piano handle 30 rotates.

The piano handle 30 is attached to the push button switch 1 as described above.
When 0 is pressed, the piano handle 30 pivots in a piano touch manner around the pivotal support between the bearing 31 and the shaft 21. The rotation of the piano handle 30 causes the push button handle 4 of the push button switch 1 to be pressed.

A concave flat surface 35 is provided on the front surface side of the piano handle 30, and a window 3 for inserting and removing the name card 38 is formed in the central portion of the concave flat surface 35 in the vertical direction.
6, a window 37 is provided with a door 37 pivotally supported from the back side of the piano handle 30 so as to be openable and closable, and a concave flat surface 35 has a name card 38 arranged in the window 36.
The central part 39a has a transparent name cover 39 so that you can see
Is being worn.

The operation of the push button switch 1 will be briefly described. The state of FIG. 9 is an ON state in which the movable contact 16 is in contact with the fixed contact 14. If the piano handle 30 is operated in the state shown in FIG. 9, the piano handle 3
With the operation of 0, the push button handle 4 is pushed down against the return spring 20, and the slide cam 19 is lowered by pushing down the push button handle 4. Then, the engaging cam body 19b on the left side of the slide cam 19 in the figure hits the engaging protrusion 17c on the left side of the reversing handle 17, whereby the reversing handle 17 is rotated. At this time, the slide cam 19 slides to the left side in the drawing as the reversing handle 17 rotates. When the reversing handle 17 is revolved in this manner, the coil spring 18 reverses, the opening / closing body 15 reverses, and the movable contact 16 separates from the fixed contact 14 to be turned off. After this reversal, when the pushing down force of the piano handle 30 is released, the push button handle 4 is pushed up by the return spring 20, at which time the piano handle 30 returns to the original state. At the same time, the slide cam 19 also moves the spring piece 1.
The spring force of 9a causes it to slide back to the center. When the piano handle 30 is pushed down again from the off state, the reversing handle 17 is rotated in reverse to the above, the movable contact 16 comes into contact with the fixed contact 14, and is turned on.

By the way, the push button switch 1 is embedded in a building surface such as a wall surface by using a ready-made mounting frame 100. The mounting frame 100 has an elongated mounting window 100a, and the push button switch 1 can be mounted at three upper, middle and lower mounting positions along the longitudinal direction of the mounting window 100a (FIG. 11). reference). On the front surface side of the mounting frame 100, a plate 110 having an opening window that is longer and wider than the mounting window 100a of the mounting frame 100 is arranged in an overlapping manner. The piano handle 30 is on the mounting frame 100,
When the three push button switches 1 are attached to the respective middle and lower attachment positions, these are the three handles that are attached to each push button switch 1, and are the piano handles 30 along the longitudinal direction of the opening window of the plate 110. Is set to approximately one third of the longitudinal dimension of the opening window.

Then, as shown in FIG. 11, the mounting frame 100
When three push button switches 1 are mounted side by side in the vertical direction, and when the piano handle 30 is attached to the central push button switch 1, the push button switches 1 are attached to the two central bearing portions 31.
The two shaft portions 21 are fitted into each other so that the central position of the central push-button switch 1 and the central position of the piano handle 30 attached to the push-button switch 1 coincide with each other. When the piano handle 30 is attached to the upper push button switch 1, the shaft portions 21 and 2 of the push button switch 1 are attached to the two lower bearing portions 31.
1 is fitted in and attached, so that the central position of the piano handle 30 attached to the push button switch 1 is displaced upward from the central position of the push button switch 1 on the upper side. When the piano handle 30 is attached to the lower push button switch 1, the shaft portion 2 of the push button switch 1 is attached to the upper two bearing portions 31, 31.
1, 21 are fitted and attached, whereby the piano handle 30 attached to the push button switch 1 is attached such that the center position of the piano handle 30 is displaced downward from the center position of the push button switch 1 on the lower side. . By doing so, the common three piano handles 30 can be commonly used for the push button switches 1 at any of the upper, middle, and lower attachment positions.

By the way, inside the push button switch 1, there is provided a light emitting means (not shown) for displaying the position or operating state of the push button switch 1 by means of a light emitting diode, for example. A light-transmitting window 7 to which a light-transmitting resin cover is attached so as to output the light is provided between the shaft portions 21 and 21 of the cover 3 of the push button switch 1.
As the light emitting means, there are one that emits light when the contact portion S is on, and one that emits light when the contact portion S is off. In the case of the present embodiment, the light emitting means emits light when the movable contact 16 is separated from the fixed contact 14 and is in an off state in order to display a so-called firefly for indicating the presence of the switch. The light emitted by the light emitting means is the piano handle 3
It can be visually recognized on the light emitting display unit 40 provided at 0. Although illustration is omitted, in the case where the light emitting means emits light when the contact portion S is on, a load (for example, an air conditioner) that is “turned on” and “turned off” when the contact portion S is turned on and off, etc. The “on” state can be visually confirmed by the light emission of the light emitting means in the light emitting display section 40.

On the other hand, the piano handle 30 has a bearing portion 3
A display hole 34 is provided at a central portion in the vertical direction on one end side where the display button 1 is provided and faces the transparent window 7 of the push button switch 1. The display hole 34 has a transparent resin. The front end portion of the light emitting display portion 40 formed by the above and displaying with light emitted from the translucent window 7 is fitted from the back surface side of the piano handle 30.

Here, the light emission display section 40 provided on the piano handle 30 is provided with light from the light emitting means provided on the push button switch 1.
The piano handle 3 is used to guide light to and to display light.
At 0, a prism 50 for guiding the light of the light emitting means to the light emitting display section 40 is provided. The prism 50 is formed of a transparent translucent resin (for example, acrylic resin). As shown in FIGS. 1A to 1D, the prism 50 has a central push button switch 1 on the back side of the emission surface 51. Light emitting display unit 40
An incident surface 52 on which light from is incident is provided. Further, side projecting prism portions 57, 57 are provided from the back side of the emitting surface 51 toward both upper and lower sides (both directions in the longitudinal direction of the mounting window 100a of the mounting frame 100), and the side projecting prism portion 57 is provided. Is provided with an incident surface 53 on which light from the upper push-button switch 1 or the lower push-button switch 1 is incident, and the light entering inside from the incident surface 53 is used as a reflecting surface 58a in the laterally projecting prism portion 57. The light is reflected by the reflection surface 58b and emitted from the emission surface 51.

This prism 50 has a piano handle 30.
The emitting surface 51 is provided on the rear side of the piano handle 30 so as to face the light emitting display unit 40 provided on the piano handle 30, and the positioning protrusion 50a provided on one side surface is provided on the rear surface of the piano handle 30.
It is attached in the state of being stored in 0b. When the prism 50 is attached to the piano handle 30, the emission surface 51 of the prism 50 is opposed to the light emitting display unit 40, and the positioning protrusion 50a is inserted into the positioning groove 30b and temporarily fixed, and then the ultrasonic heat-bonding horn is attached. The protrusion (not shown) provided on the rear surface of the piano handle 30 that abuts against the abutting portion 50c provided on the back surface of the prism 50 and comes into contact with the laterally protruding prism portions 57 and 57 is melted by ultrasonic energy. Then, the back surface of the piano handle 30 is fixed by heat.

Thus, as shown in FIG. 11, in the three piano handles 30 attached to the push button switch 1 at the central attachment position, the incident surface 52 has the light transmitting window 7 of the push button switch 1.
In addition, in the piano handle 30 attached to the push button switch 1 at the upper attachment position, the incident surface 53 of the lower side protruding prism portion 57 faces the translucent window 7 of the push button switch 1, and , Push button switch 1 at the lower mounting position
In the piano handle 30 attached to, the incident surface 53 of the upper side protruding prism portion 57 faces the light transmitting window 7 of the push button switch 1.

Then, the light emitted from the light emitting means LD of the push button switch 1 attached to the central mounting position is incident from the incident surface 52 as shown in the schematic view of FIG.
The light is emitted from the emission surface 51 toward the light emitting display unit 40. Further, the light emitted from the light emitting means LD of the push button switch 1 attached to the upper or lower mounting position is as shown in FIG.
As shown in (a) and (c), the light enters the side-projecting prism portion 57 from the incident surface 53, is reflected in the side-projecting prism portion 57, and is emitted from the emitting surface 51 toward the light emitting display unit 40. . Here, in the present embodiment, the incident surfaces 52, 5
3 is formed into a convex curved surface so that the light emitted from the light emitting means LD becomes substantially parallel light inside, and the light traveling in the prism 50 is substantially parallel light, so that the reflecting surfaces 58a, 58 are provided.
The light can be efficiently reflected by b, the amount of light from the emission surface 51 can be increased, and the brightness of the light emitting display unit 40 can be increased.

A plurality of concave and convex prism portions 54 are formed on the emission surface 51 along the vertical direction in the state of being attached to the construction surface, and the saw tooth-shaped convex portions 5 of each prism portion 54 are formed.
An inclined surface 5 that inclines downward on the upper surface of 5
5a, and the lower surface of the convex portion 55 is a flat surface 5 that is substantially horizontal.
5b (see FIG. 1 (e)).

By the way, although the above-mentioned piano handle type switch is used by being mounted on a wall surface, since the mounting height of the piano handle type switch is generally lower than the eye level of the human eye, the light emitting display section 40 has It is desirable to direct the viewing angle of the light from the light emitting display unit 40 upward so that the light emission can be easily seen. Therefore, in the present embodiment, the downward inclined surface 5 is provided on the upper surface of the convex portion 55 of the prism portion 54 provided on the emission surface 51.
Since the light 5a is provided and the light traveling in the prism 50 is refracted upward by the inclined surface 55a as shown in FIGS. 3A and 3B, the light emission of the light emitting display unit 40 can be easily seen. Further, if the entire emission surface 51 is inclined, the amount of protrusion to the front becomes large. However, in the present embodiment, the inclined surface is divided into a plurality of parts and the inclined surfaces 55a are formed on the upper surfaces of the plurality of convex portions 55. Therefore, the amount of protrusion to the front can be reduced.

When the push button switch 1 is attached to the lower attachment position, the light emitted from the light emitting means LD of the push button switch 1 is emitted from the upper side protruding prism portion 57 as shown in FIG. 4 (a). The light is incident on the incident surface 53 and is reflected by the reflecting surfaces 58a and 58b.
The light is incident on the exit surface 51 obliquely downward. However, since the lower surface of the convex portion 55 of each prism portion 54 is a flat surface 55b, the light incident on the exit surface 51 obliquely downward is flattened. The surface 55b is totally reflected, and the viewing angle of the light from the emission surface 51 can be made obliquely upward, so that the light emission of the light emitting display unit 40 can be easily seen.

(Second Embodiment) A second embodiment of the present invention is shown in FIG.
2 (a) and (b) will be described. In the first embodiment,
A plurality of prism parts 5 provided on the exit surface 51 of the prism 50
The shape of No. 4 is formed in a sawtooth shape, but in the present embodiment, as shown in FIGS. 12A and 12B, the normal direction is substantially horizontal to the tip of the convex portion 55 of each prism portion 54 ( While forming a flat surface 55c (generally perpendicular to the horizontal plane), the recess 5
A flat surface 56a whose normal direction is substantially horizontal is formed on the bottom surface of 6. Since the configuration other than the prism 50 is the same as that of the first embodiment, common components are denoted by the same reference numerals, illustration and description thereof are omitted, and only the characteristic features of the present embodiment will be described. .

By the way, when the push button switch 1 is attached to the central mounting position, the light from the light emitting means LD of the push button switch 1 enters from the incident surface 52 of the prism 50 as shown in FIG. Since the light is incident from a direction substantially perpendicular to the emission surface 51, if the emission surface 51 is formed with a downward inclined surface, a part of the light is reflected obliquely downward, but in the present embodiment. Convex portion 5 of each prism portion 54
Since flat surfaces 55c and 56a whose normal direction is substantially horizontal are formed at the tip of 5 and the bottom surface of the recess 56, respectively.
The flat surface 5 is formed without reflecting a part of the light downward.
Light can be efficiently emitted from 5c and 56a (see FIG. 12B).

In this embodiment, the flat surface 5 is formed on each of the tips of the projections 55 and the bottoms of the recesses 56 of each prism 54.
Although 5c and 56a are formed, the flat surfaces 55c and 56a may be formed only on one of the tip of the convex portion 55 and the bottom surface of the concave portion 56 of each prism portion 54. When the push button switch 1 is attached to the attachment position of 1, the light from the light emitting means LD which is incident from the incident surface 52 can be efficiently emitted to the outside from the flat surfaces 55c and 56a.

(Embodiment 3) Embodiment 3 of the present invention is shown in FIG.
This will be described with reference to 3 (a) and 3 (b). In the first embodiment,
A plurality of prism parts 5 provided on the exit surface 51 of the prism 50
The shape of No. 4 is a sawtooth shape, but in the present embodiment, as shown in FIGS. 13A and 13B, curved surfaces 55d, 5 are formed on the tip of the convex portion 55 and the bottom surface of the concave portion 56 of each prism portion 54.
6b are formed respectively. Since the configuration other than the prism 50 is the same as that of the first embodiment, common components are denoted by the same reference numerals, illustration and description thereof are omitted, and only the characteristic features of the present embodiment will be described. .

When the push button switch 1 is mounted at the central mounting position, the light emitted from the light emitting means LD of the push button switch 1 is
As shown in FIG. 13A, the incident surface 52 of the prism 50 is
Since the light enters from a direction substantially perpendicular to the emission surface 51, if a downwardly inclined surface is formed on the emission surface 51, a part of the light is reflected obliquely downward, In this embodiment, since the curved surfaces 55d and 56b are formed on the tip of the convex portion 55 and the bottom surface of the concave portion 56 of each prism portion 54, respectively, the curved surfaces 55d and 56b are not reflected from the curved surfaces 55d and 56b without reflecting a part of the light downward. It is possible to efficiently emit light, and by forming the curved surfaces 55d and 56b, the light from the emission surface 51 can be spread.

In this embodiment, the curved surface 55 is formed on both the tip of the convex portion 55 and the bottom surface of the concave portion 56 of each prism portion 54.
Although d and 56b are formed, the curved surfaces 55d and 56b may be formed only on either the tip of the convex portion 55 or the bottom surface of the concave portion 56.

(Embodiment 4) FIG. 1 shows Embodiment 4 of the present invention.
This will be described with reference to 4 (a) and 4 (b). In the first embodiment,
A plurality of prism portions 54 are formed on substantially the entire exit surface 51 of the prism 50. In the present embodiment, FIG.
As shown in (b), a flat surface 59 whose normal direction is substantially horizontal (generally perpendicular to the horizontal plane) is formed on a part of the emission surface 51 (for example, a central portion in the vertical direction), and the flat surface 59 is formed. A plurality of prism parts 54 are formed in other parts. still,
Since the configuration other than the prism 50 is the same as that of the first embodiment, common components are denoted by the same reference numerals, illustration and description thereof are omitted, and only the characteristic features of the present embodiment will be described.

By the way, when the push button switch 1 is attached to the central mounting position, the light from the light emitting means LD of the push button switch 1 enters from the incident surface 52 of the prism 50 as shown in FIG. Since the light is incident from a direction substantially perpendicular to the emission surface 51, if the emission surface 51 is formed with a downward inclined surface, a part of the light is reflected obliquely downward, but in the present embodiment. Since the flat surface 59 whose normal direction is substantially horizontal is formed on a part of the emission surface 51, light can be efficiently emitted from the flat surface 59 without reflecting a part of the light downward. it can.

In each of the above-described embodiments, the incident surface 52 is a convex curved surface and the light incident on the prism 50 from the incident surface 52 is substantially parallel light. However, the light incident from the incident surface 52 is projected laterally. Like the light incident from the incident surface 53 of the prism portion 57, the light is not reflected by the reflection surfaces 58a and 58b but directly incident on the emission surface 51. Therefore, the incident surface 52 is a flat surface whose normal direction is substantially horizontal. Also good.

[0049]

As described above, according to the first aspect of the present invention, the push button switch adapted to switch the contact portion housed therein in accordance with the pushing operation of the push button handle and the front side of the push button switch are mounted. And a piano handle for pressing the push-button handle by a piano touch operation. The push-button switch has a built-in light-emitting means for indicating the position or state of light, and guides the light emitted from the light-emitting means from the surface on the piano handle side to the outside. It is used for a piano handle type switch that has a light-transmitting window for the piano handle, and the piano handle is provided with a light-emitting display section that emits light by the light emitted from the light-transmitting window. A prism for a piano handle type switch for guiding light from a light-transmitting window to a light-emitting display unit, which emits light from an incident surface facing the light-transmitting window. A reflecting surface that leads to the exit surface facing the display part is provided inside, and a convex curved surface is formed on the entrance surface so that the light from the translucent window becomes substantially parallel light inside. By providing the curved surface, the light incident from the incident surface is made into substantially parallel light inside the prism, so that the light reflected by the reflecting surface in a direction different from the emitting surface can be reduced and can be efficiently reflected. As a result, it is possible to increase the amount of light from the emission surface and increase the brightness of the light emitting display unit.

According to a second aspect of the present invention, in the first aspect of the present invention, the push button switch has an elongated attachment window for attaching an instrument, and three upper, middle and lower attachment windows are provided along the longitudinal direction of the attachment window. It is arranged on the construction surface using the mounting frame with the mounting position,
The piano handles are three handles that can be attached to the push button switches at the respective mounting positions when the push button switches are mounted at the three mounting positions of the mounting frame. The side-projecting prism parts are extended respectively, and on the back side of each side-projecting prism part and the back side of the emitting surface, from the translucent window of the push-button switch according to the three mounting positions with respect to the mounting frame of the push-button switch. Each of the light-incident surfaces of the side-projecting prisms is formed and a reflection surface for guiding the light from the incidence surface of each side-projecting prism section to the exit surface is formed inside, and at least the projection surface of each side-projecting prism section is projected. Characterized by forming a curved surface, the push button switch can be attached to both sides of the mounting position when one type of piano handle is used as the handle of the push button switch that is mounted at the three mounting positions of the mounting frame. Even if the ANO handle is attached, since the convex curved surface is formed on the incident surface of each side protruding prism part, the light incident from this incident surface can be made into substantially parallel light inside the prism. Since the light reflected by the reflecting surface in a direction different from that of the emitting surface can be reduced and reflected efficiently, the amount of light from the emitting surface can be increased and the brightness of the light emitting display section can be increased. .

The invention of claim 3 is characterized in that, in the invention of claim 1 or 2, the output surface is provided with a prism portion that makes the light from the output surface obliquely upward. When placed below eye level,
Since the light emitted from the emission surface is directed obliquely upward by the prism portion, the viewing angle of the light emitted from the light emitting display portion can be directed upward, and the light emission display of the light emitting display portion can be easily viewed.

According to a fourth aspect of the present invention, in the invention according to the third aspect, the prism portion comprises a plurality of concave and convex portions provided on the emission surface along the vertical direction in the state of being attached to the construction surface. It is characterized in that the upper surface is an inclined surface that inclines downward as it goes to the front surface, and by forming a downward inclined surface on the upper surface of the convex part, it is possible to refract the light incident on the emission surface upward and to emit light. There is an effect that it is possible to make the light emission display of the light emitting display unit easy to see by setting the viewing angle of the light from the display unit upward.

According to a fifth aspect of the invention, in the invention according to the fourth aspect, the lower surface of the convex portion is a substantially horizontal flat surface, and a piano handle is attached to the push button switch at the lower attachment position. In addition, when the light from the light-transmitting window is incident on the incident surface of the upper side projecting prism portion, is reflected by the reflecting surface, and is incident on the emitting surface obliquely from above, the incident light is provided on the lower surface of the convex portion. Since the light is reflected upward by the horizontal flat surface, there is an effect that the light emitted from the light emitting display section can be easily viewed by making the light from the emission surface, that is, the light emitting display section upward.

According to a sixth aspect of the invention, in the invention according to the fourth or fifth aspect, at least one of the tip surface of the convex portion and the bottom surface of the concave portion is a flat surface whose normal direction is substantially horizontal. Characteristically, when the piano handle is attached to the push button switch at the central mounting position, the light from the translucent window enters from the incident surface provided on the back side of the emission surface and enters substantially perpendicularly to the emission surface. Therefore, if a downward inclined surface is formed on the emission surface, a part of the light is reflected downward on the inclined surface, but at least one of the tip surface of the convex portion and the bottom surface of the concave portion is a normal line. By providing a flat surface whose direction is substantially horizontal, it is possible to efficiently emit light from this flat surface, and it is possible to brighten the light emitting display of the light emitting display unit.

The invention of claim 7 is characterized in that, in the invention of claim 4 or 5, at least one of the tip surface of the convex portion and the bottom surface of the concave portion is formed into a curved surface, and the push button at the central mounting position is provided. When the piano handle is attached to the switch, the light from the translucent window enters from the entrance surface provided on the back side of the exit surface and enters substantially perpendicular to the exit surface. Part of the light is reflected downward on the inclined surface, however, since at least one of the tip surface of the convex portion and the bottom surface of the concave portion is formed into a curved surface, from this curved surface There is an effect that light can be emitted efficiently, the light emission display of the light emitting display section can be brightened, and a part of the emission surface can be curved so that the emitted light can be spread.

According to an eighth aspect of the present invention, in the invention according to any one of the third to seventh aspects, a flat surface whose normal direction is substantially horizontal is provided on a part of the emission surface, and a portion other than the flat surface is provided. When the piano handle is attached to the push button switch at the central attachment position, the light from the light-transmissive window enters from the entrance surface provided on the back side of the exit surface and exits. Since the light is incident almost perpendicularly to the surface, if a downwardly inclined surface is formed on the emission surface, some of the light will be reflected downward at the inclined surface, but the normal to a portion of the emission surface. By providing a flat surface whose direction is substantially horizontal, it is possible to efficiently emit light from this flat surface, and it is possible to brighten the light emitting display of the light emitting display unit.

[Brief description of drawings]

1A and 1B show a piano handle type switch prism according to Embodiment 1, where FIG. 1A is a front view and FIG. 1B is a left side view;
(C) is a right side view, (d) is a top view, and (e) is an enlarged view of part A.

2A to 2C are explanatory views for explaining the optical path of the same.

3A and 3B are explanatory views for explaining the optical path of the above.

4A and 4B are explanatory views for explaining the optical path of the above.

FIG. 5 is an exploded perspective view of a piano handle type switch using the same as above.

FIG. 6 shows a piano handle using the same as above, (a) is a front view and (b) is a rear view.

7 (a) and 7 (b) are explanatory views for explaining a pivot structure of a push button switch and a piano handle using the same as above.

FIG. 8 is an exploded perspective view of a push button switch using the same as above.

FIG. 9 is a sectional view of a piano handle type switch using the same as above.

FIG. 10 is a front view showing a state where a piano handle type switch using the same as above is attached to an attachment frame.

FIG. 11 is an explanatory diagram showing a state before the piano handle using the same as above is attached to the push button switch.

12A and 12B show a piano handle type switch prism according to a second embodiment, FIG. 12A is a side view, and FIG.

13A and 13B show a piano handle type switch prism according to a third embodiment, wherein FIG. 13A is a side view and FIG.

14A and 14B show a piano handle type switch prism according to a fourth embodiment, wherein FIG. 14A is a side view and FIG.

FIG. 15 is an exploded perspective view of a piano handle type switch using a conventional piano handle type switch prism.

FIG. 16 is a piano handle type switch, a mounting frame,
It is an exploded perspective view of a plate frame and a decorative plate.

FIG. 17 is a side view of the above piano handle type switch prism.

[Explanation of symbols]

50 prism 51 exit surface 52,53 Incident surface 57 Side protruding prism 58a, 58b Reflective surface

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hirotoshi Okuno             1048, Kadoma, Kadoma-shi, Osaka Matsushita Electric Works Co., Ltd.             Inside the company (72) Inventor Manabu Yano             1048, Kadoma, Kadoma-shi, Osaka Matsushita Electric Works Co., Ltd.             Inside the company (72) Inventor Takashi Kawamoto             1048, Kadoma, Kadoma-shi, Osaka Matsushita Electric Works Co., Ltd.             Inside the company F-term (reference) 5G019 CP01 CX61 JJ02 JJ09 JJ11                       JJ12 KK22

Claims (8)

[Claims] 1. A push button switch adapted to switch a contact portion housed therein in response to a push button handle pushing operation, and a piano mounted on the front side of the push button switch to push the push button handle by a piano touch operation. With a handle, the push button switch has a built-in light emitting means for displaying a position or a state of light, and a transparent window for guiding the light emitted from the light emitting means to the outside from the surface on the piano handle side is provided. Used for a piano handle type switch provided with a light emitting display section for performing light emission display by light emitted from the transparent window, and the light emitted from the transparent window of each push button switch provided on the back side of the piano handle A prism for a piano handle-type switch for guiding light to a light-emitting display unit that emits light from an incident surface facing the translucent window. A prism for a piano-handle-type switch, characterized in that a reflecting surface that leads to a reflecting surface is provided inside, and a convex curved surface is formed on the entrance surface so that the light from the transparent window becomes substantially parallel light inside. 2. The push button switch is constructed by using a mounting frame having an elongated mounting window for mounting an instrument and provided with three mounting positions of upper, middle and lower along the longitudinal direction of the mounting window. And the piano handles are three handles that can be attached to the push button switches at the respective attachment positions when the push button switches are attached to the three attachment positions of the attachment frame. Side protruding prisms are respectively extended from the back side to the upper and lower sides, and the push button switch mounting frame is attached to the back side of each side protruding prism section and the back side of the emitting surface with respect to the mounting frame of the push button switch.
According to the mounting position of the push button switch, the incident surface for entering the light from the light-transmitting window is formed respectively, and the reflecting surface for guiding the light from the incident surface of each side projecting prism part to the emitting surface is formed inside. The prism for a piano handle type switch according to claim 1, wherein the convex curved surface is formed on at least an incident surface of each of the laterally projecting prism portions. 3. A prism for a piano handle type switch according to claim 1 or 2, wherein the exit surface is provided with a prism portion for directing light from the exit surface obliquely upward. 4. The prism portion comprises a plurality of concave and convex portions provided on the emitting surface along the vertical direction in a state of being attached to a construction surface, and the upper surface of the convex portion is inclined downward toward the front surface. The prism for a piano handle type switch according to claim 3, wherein the prism is a surface. 5. The prism for a piano handle type switch according to claim 4, wherein the lower surface of the convex portion is a substantially horizontal flat surface. 6. The piano handle type switch according to claim 4, wherein at least one of the tip surface of the convex portion and the bottom surface of the concave portion is a flat surface whose normal direction is substantially horizontal. For prism. 7. The prism for a piano handle type switch according to claim 4, wherein at least one of the tip surface of the convex portion and the bottom surface of the concave portion is formed into a curved surface. 8. A flat surface whose normal direction is substantially horizontal is provided on a part of the exit surface, and the prism portion is formed on a portion other than the flat surface. Prism for piano handle type switch described in 3.