JP3564813B2 - intercom - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an improvement in an intercom, and more particularly to an improvement in a mounting structure of a monitor television and a telephone microphone.
[0002]
[Prior art]
FIGS. 7 and 8 show a mounting structure of a television unit in a conventional hands-free intercom.
[0003]
In FIG. 7, after attaching a cushion member 112 of an elastic foam body made of butyl rubber or the like to a support leg 111 formed on the inner surface of the lower cover 101b, the television unit 102 is placed thereon. The upper cover 101a is fixed to the lower cover 101b by screws or the like, and the television unit 102 housed between the upper cover 101a and the lower cover 101b includes a leaf spring 114 provided on the inner surface of the lower cover 101b. And a pressing portion 101c provided around the television display window 103 of the upper cover 101a. In this television unit mounting structure, the distance between the support legs 111 is formed to be slightly larger than the outer frame of the television device 102.
[0004]
In FIG. 7, a member 130 indicated by an imaginary line is a circuit board on which a video processing circuit, a power supply, and the like are mounted.
[0005]
8A and 8B, a leaf spring is not provided on the inner surface of the lower cover 101b, but a notch 121 is formed on the bottom surface of the lower cover 101b so that the lower cover 101b has elasticity. The television unit 102 is supported by a cut-and-raised piece 121a bent and projected, and the television unit 102 is sandwiched between a pressing member 101c formed on the edge of the window 103 and the cut-and-raised piece 121a. Is fixed. In FIG. 8A, a member 130 indicated by an imaginary line is a circuit board on which a video processing circuit, a power supply, and the like are mounted, and a reference numeral 131c is provided on the circuit board 130 for inserting the protrusion 121a. Hole.
[0006]
FIG. 9 shows a conventional structure in which a telephone microphone is attached to an intercom. FIG. 9 is a structural view showing the inner surface of the upper cover in a partially broken manner.
[0007]
In this structure, the call microphone 107 is accommodated in a call microphone accommodating frame 141 formed at an appropriate position on the upper cover 101a, and a cushion member 143 such as a sponge is interposed on the back surface of the call microphone 107, and It is supported by a backing plate 145 that is screwed to a protruding support 142.
[0008]
Further, FIG. 10 shows a structure of a monitor indicator light 105 built in the surface of a conventional television intercom B. The monitor indicator light 105 is a light emitting diode in which an LED chip is sealed in a transparent resin. Is soldered to the substrate 131 with the spacer 151 interposed therebetween.
[Problems to be solved by the invention]
However, the conventional television unit mounting structure shown in FIG. 7 requires the bolt 113, the leaf spring 114, and the like, and has a problem that there are many constituent members.
[0009]
In addition, in the conventional mounting structure of the television unit 102 shown in FIG. 8, it is necessary to form a hole 131c through which the cut-and-raised piece 121a of the notch 121 is inserted in the circuit board 131. When the electric circuit is formed, there is a problem that the circuit design is restricted due to the presence of the hole 131c.
[0010]
A first object of the present invention is to solve such a problem, and requires a mounting member such as a bolt or a leaf spring when a television unit is fixedly mounted in a unit case. It is another object of the present invention to provide an intercom having a simple structure for mounting a television unit, in which a hole is not required to be formed in a substrate and a circuit design is not restricted by such a hole.
[0011]
Further, the conventional mounting structure of the telephone microphone 107 of the hands-free intercom B requires the cushion member 143, the metal plate 145, the bolt 144, and the like, and has a problem that there are many constituent members.
[0012]
A second object of the present invention is to solve such a problem, and when a telephone microphone is fixedly mounted in a unit case, a cushion member, a bolt, a metal plate, or the like is used. It is an object of the present invention to provide an intercom having a simple structure for attaching a telephone microphone, which does not require an attaching member.
[0013]
Further, in the structure of the monitor display lamp 105 of the conventional hands-free intercom B, only one color is emitted, and the hands-free intercom B is in a call state, a call state, or a standby state. There was a problem that it was impossible to identify whether there was.
[0014]
As a technique for performing multi-color display using a plurality of light emitting diode chips, a light emitting diode chip described in JP-A-4-137570 is known, and this technique can be diverted to the structure of a monitor indicator light. It is conceivable that the light emitting diode described in JP-A-4-137570 has a light-transmitting property in which light-scattering particles and light-transmitting particles are mixed so as to cover a plurality of light-emitting diodes having different emission colors. Since resin is used, it is necessary to determine how much light-scattering particles and light-transmitting particles are mixed in the light-transmitting resin, and it is necessary to solder to the substrate and there are spacers. For these reasons, the use of the light emitting diode described in Japanese Patent Application Laid-Open No. 4-137570 raises the problem of increased cost and the mixing of particles into the translucent resin, resulting in lower brightness of the monitor display lamp. There is a problem that that.
[0015]
A third object of the present invention is to solve such a problem, and it is possible to change a display color of a monitor indicator lamp in accordance with a call state of a hands-free intercom, and It is another object of the present invention to provide an intercom that does not require mixing of particles into a light-transmitting resin and has a structure of an inexpensive monitor indicator light.
[Means for Solving the Problems]
The intercom according to the present invention proposed to achieve the above object has the following structure.
[0016]
2. The intercom according to claim 1, wherein the intercom includes a monitor television in a unit case having an upper cover and a lower cover, wherein the lower cover has an elastically deformable support leg protruding therefrom. After mounting the monitor television on the upper cover, the upper cover is attached to the lower cover from above, whereby the support leg is elastically deformed by the pressing force of the upper cover, and the monitor television is sandwiched between the upper cover and the lower cover. It is characterized in that it has a fixed structure.
[0017]
In the intercom according to claim 1, after the monitor television is mounted on the elastically deformable support legs, the upper cover is attached to the lower cover from above, whereby the support legs are elastically deformed by the pressing force of the upper cover. Then, the monitor TV was fixed by sandwiching it between the upper cover and the lower cover.When the monitor TV was fixedly mounted in the unit case, mounting members such as bolts and leaf springs were required. In addition, there is no need to form a hole in the circuit board, and the circuit design is not restricted by such a hole.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
(Embodiment 1)
Hereinafter, the present invention will be described in more detail with reference to the drawings.
[0019]
FIG. 2 is a plan view schematically showing the appearance of the hands-free intercom according to the present invention as viewed from the front.
[0020]
Referring to FIG. 2, the hands-free intercom A has a screen of a monitor television such as a CRT (monitor television 2 shown in FIG. 1) on an upper cover 1a of the unit case (unit case 1 shown in FIG. 1). , A double-sided call push button 4 provided in a central portion below the television display window 3, and a display window 5 w provided above the double-sided call push button 4 for lighting and displaying a monitor indicator light 5. A monitor push button 6 provided on the lower right side of the television display window 3, a microphone 7 provided on the lower left side of the television display window 3, and used when calling to the doorphone slave unit, and a unit case ( It is provided below a unit case 1) shown in FIG. 10 and has a structure including a loudspeaker (not shown).
[0021]
Next, the mounting structure of the monitor television (the monitor television 2 shown in FIG. 1) of the hands-free intercom A according to the present invention will be described.
[0022]
FIG. 1 is a cross-sectional view of the handsfree intercom A shown in FIG. 2 along the line II. Referring to FIG. 1, the lower cover 1b is provided to support the monitor television 2 and is formed so as to protrude in the direction of the upper cover 1a, and has an interval slightly smaller than the outer frame of the monitor television 2. The supporting leg 11 is integrally formed. The support leg 11 is made of an elastically deformable resin or the like.
[0023]
After the monitor television 2 is placed on the lower cover 1b, the upper cover 1a is attached to the lower cover 1b from above the lower cover 1b, whereby the pressing portion provided around the television display window 3 of the upper cover 1a. The supporting leg 11 is elastically deformed by the pressing force of 1c, and the monitor television 2 is fixed by being sandwiched and fixed between the upper cover 1a and the lower cover 1b.
[0024]
In addition, as a method of attaching the upper cover 1a to the lower cover 1b, the upper cover 1a and the lower cover 1b may be bonded by using an adhesive, and a fitting concave portion or a fitting convex portion is provided on the upper cover 1a. The lower cover 1b may be provided with a fitting projection or a fitting recess so that the upper cover 1a and the lower cover 1b may be fitted together, or the upper cover 1a and the lower cover 1b may be screwed. good. If the upper cover 1a and the lower cover 1b are screwed to each other, the pressing force in the direction of the lower cover 1b of the upper cover 1a can be more securely pushed, so that the monitor television 2 can be more securely inserted into the unit case 1. Can be attached.
[0025]
In FIG. 1, a member 30 indicated by an imaginary line is a circuit board on which a video processing circuit, a power supply, and the like are mounted.
[0026]
In this hands-free intercom A, the monitor television 2 is pressed against the support leg 11 having a space slightly smaller than the outer frame of the monitor television 2 in the direction of the lower cover 1b of the upper cover 1a, and the elasticity of the support leg 11 is adjusted. Since the monitor television 2 is fixedly mounted in the unit case 1 because the mounting is performed by the stress, no mounting members such as bolts and leaf springs are required, and there is no need to form a hole in the circuit board. Circuit design is not restricted by such holes.
[0027]
Next, the mounting structure of the telephone microphone 7 of the handsfree intercom A according to the present invention will be described below. FIG. 3 is a cross-sectional view of the handsfree intercom A shown in FIG. 2 along the line II-II. With reference to FIG. 3, in the hands-free intercom A, the upper cover 1a is provided at a predetermined position for accommodating the telephone microphone 7, and the telephone microphone housing protrudingly formed in the lower cover direction 1b. A communication microphone provided with a frame 41 and provided on the lower cover 1b to support the communication microphone 7 accommodated in the communication microphone accommodating frame 41 provided on the upper cover 1a and protruding toward the upper cover 1b. The holding rib 42 is integrally formed. In FIG. 4, reference numerals 30 and 31 denote circuit boards on which electric circuits are formed, and reference numeral 30c denotes a hole through which the telephone microphone holding rib 42 provided on the circuit board 30 is inserted.
[0028]
After the call microphone 7 is accommodated in the call microphone housing frame 41, the upper cover 1a is fixedly attached to the lower cover 1b, so that the call microphone 7 is fixed by the call microphone holding rib 42. While being pushed into the housing frame 41, it is fixedly mounted in the housing unit case 1.
[0029]
In FIG. 3, members 30 and 31 indicated by imaginary lines are circuit boards on which a video processing circuit, a power supply and the like are mounted, and 30c is a hole provided on the board 30 for inserting the call microphone holding rib 42 therethrough. Department.
[0030]
In the hands-free intercom A, since the call microphone 7 is supported from below by the call microphone holding rib 42, when the call microphone 7 is fixedly mounted in the unit case 1, a cushion member, a bolt, There is no need for mounting members such as metal plates.
[0031]
Next, the structure of the monitor indicator lamp 5 of the hands-free intercom A according to the present invention will be described below. FIG. 4 is a cross-sectional view of the hands-free intercom A shown in FIG. 2 along the line III-III, and FIG. 5 is a cross-sectional view showing the monitor indicator light 5 shown in FIG.
[0032]
Referring to FIGS. 4 and 5, the monitor indicator lamp 5 of the hands-free intercom A includes two light emitting diode chips 5a and 5b having different emission colors. More specifically, the light emitting diode chip 5a is a green light emitting diode chip, the light emitting diode chip 5b is a red light emitting diode chip, and the two light emitting diode chips 5a and 5b are It is provided in the position of. The two light-emitting diode chips 5a and 5b are covered with a dome-shaped light-transmitting resin cover 52. Inside the light-transmitting resin cover 52, the light-emitting surfaces 5as and 5as of the light-emitting diode chips 5a and 5b, respectively. On the surface on the 5bs side, there are provided two light diffusion concave curved surfaces R5a and R5b having predetermined curved surfaces corresponding to the light emitting surfaces 5as and 5bs of the light emitting diode chips 5a and 5b, respectively. A light-converging convex surface R5c having a predetermined curved surface is provided on a surface 5cs opposite to the light-emitting surfaces 5as and 5bs of the diode chip.
[0033]
Each of the concave surfaces R5a and R5b functions as a concave lens, and the convex surface R5c functions as a convex lens. In FIG. 5, reference numeral 53 denotes a hollow space formed in the translucent resin cover 52 for accommodating two light emitting diode chips 5a and 5b having different emission colors.
[0034]
In the monitor indicator 5 of the hands-free intercom A, only the green light emitting diode chip 5a is lit in the call state in the standby state, and only the red light emitting diode chip 5b is lit in the call state, Thus, both the green light emitting diode chip 5a and the red light emitting diode chip 5b are turned on.
[0035]
FIG. 6 is a cross-sectional view schematically showing the operation principle of the structure of the monitor indicator light 5 of the handsfree intercom A according to the present invention.
[0036]
In FIG. 6A, when only the green light emitting diode chip 5a is turned on, the green light is diffused by the concave surface R5a provided on the translucent resin cover 52, and is condensed by the convex surface R5c. Since the conductive resin cover 52 shines green, the monitor indicator light 5 shines green.
[0037]
In FIG. 6B, when only the red light-emitting diode chip 5b is turned on, the red light is diffused by the concave surface R5b provided on the translucent resin cover 52 and is condensed by the convex surface R5c. Since the conductive resin cover 52 shines red, the monitor indicator light 5 shines red.
[0038]
In FIG. 6C, when both the green light-emitting diode chip 5a and the red light-emitting diode chip 5b are turned on, the two concave surfaces R5a and R5b allow red light and green light to pass through the translucent resin 52. The color mixture is added and the light is condensed by the convex surface R5c, and the translucent resin cover 52 shines orange, so that the monitor indicator light 5 shines orange.
[0039]
In the hands-free intercom A, the call monitor lamp 5 can emit light in three colors of green, red, and orange. Therefore, whether the hands-free intercom A is in the calling state or the talking state is called. Can be easily identified as being in a standby state.
[0040]
In this hands-free intercom A, the light-transmitting resin cover 52 covering the two light-emitting diode chips 5a and 5b of the call monitor lamp 5 has the light-emitting surfaces 5as and 5bs of the two light-emitting diode chips 5a and 5b respectively. The light-transmitting resin 52 has a structure in which two concave surfaces R5a and R5b having predetermined curved surfaces are provided corresponding to the light-emitting surfaces 5as and 5bs of the light-emitting diode chips 5a and 5b on the side surface. Since there is no need to mix particles into the telephone, the manufacturing cost is low and the brightness of the call monitor lamp does not decrease.
[0041]
Further, the call monitor lamp 5 has a configuration using two light emitting diode chips 5a and 5b attached to the circuit board 31, so that the light emitting diode described in Japanese Patent Application Laid-Open No. 4-137570 is used. Since there is no need for soldering, there is no need to provide the spacer 151, and there is also an effect that the call monitor lamp can be reduced in cost and size.
[0042]
In addition, although the example using the green light emitting diode chip 5a and the red light emitting diode chip 5b is shown in the call monitor lamp 5, this is for the sake of easy explanation, and the light emitting diode chip used is: It is needless to say that the emission colors may be different from each other, and are not limited to red and green.
[0043]
In the hands-free intercom A, an example is shown in which the two light-emitting diode chips 5a and 5b of the call monitor lamp 5 are used. A light-transmitting resin diffusion cover is provided so as to cover the light-emitting diode chip, and the light-emitting surface side of each of the multiple light-emitting diode chips inside the light-transmitting resin diffusion cover corresponds to each light-emitting surface of the light-emitting diode chip A plurality of light diffusing concave curved surfaces having a predetermined curved surface are provided, and a light converging convex surface having a predetermined curved surface is provided on a surface opposed to a light emitting surface side surface of a plurality of light emitting diode chips, and the function of a hands-free intercom Accordingly, lighting of one or more of the plurality of light emitting diode chips may be controlled to emit light of a single color or a mixed color.
[0044]
Further, a plurality of light emitting diode chips having different emission colors are used, and a light-transmitting resin diffusion cover is provided so as to cover the plurality of light emitting diode chips having different emission colors. A plurality of concave surfaces having a predetermined curved surface corresponding to each light emitting surface of the light emitting diode chip are provided on each light emitting surface side surface, and a predetermined concave surface is provided on a surface opposed to the light emitting surface side surface of the plurality of light emitting diode chips. A device that provides a convex surface having a curved surface and controls lighting of one or more of a plurality of light emitting diode chips to emit light of a single color or a mixed color is not limited to a call monitor lamp of a hands-free intercom, and is used for various purposes. It can be suitably used as a light emitting mode display device.
[0045]
In this light emitting mode display device, for example, when three types of light emitting diode chips corresponding to the three primary colors of red, green, and blue light are used, at least seven (3C1 + 3C2 + 3C3 = 7) different colors of light are used. Can emit light.
[0046]
【The invention's effect】
As described in detail above, the present invention has the following effects. In the intercom according to claim 1, after the monitor television is placed on the elastically deformable support legs, the upper cover is attached to the lower cover from above, whereby the support legs are elastically deformed by the pressing force of the upper cover. The monitor TV is fixed by sandwiching it between the upper cover and the lower cover, so that when the monitor TV is fixedly mounted in the unit case, mounting members such as bolts and leaf springs are not required. Moreover, it is not necessary to form a hole in the circuit board, and such a hole does not restrict circuit design.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of the hands-free intercom shown in FIG. 2, taken along line II.
FIG. 2 is a plan view schematically showing the appearance of the hands-free intercom according to the present invention as viewed from the front.
FIG. 3 is a cross-sectional view of the hands-free intercom shown in FIG. 2, taken along line II-II.
FIG. 4 is a cross-sectional view of the hands-free intercom shown in FIG. 2, taken along line III-III.
5 is an enlarged cross-sectional view showing the monitor indicator light shown in FIG. 4;
FIG. 6 is a sectional view schematically showing the operation principle of the structure of the monitor indicator light of the hands-free intercom according to the present invention.
FIG. 7 is a cross-sectional view schematically illustrating an example of a conventionally known mounting structure of a monitor television.
FIG. 8 is a cross sectional view schematically showing another example of a conventionally known mounting structure of a monitor television.
FIG. 9 is a cross-sectional view schematically showing a conventional structure for attaching a call microphone to an intercom.
FIG. 10 is a cross-sectional view showing the structure of a monitor indicator light built into the surface of a conventional television intercom.
[Explanation of symbols]
A Hands-free intercom 1 Unit case 1a Upper cover 1b Lower cover 2
Monitor TV 3 TV display window 4 Double-sided call push button 5 Monitor indicator light 5w
Monitor display windows 5a, 5b Light emitting diode chip 6 Monitor push button 7 Microphone 11
Support leg 30
Circuit board 41
Call microphone housing frame 42
Rib 52 for holding call microphone
Translucent resin cover R5a, R5b Concave surface R5c Convex surface

Claims (1)

An intercom including a monitor television in a unit case having an upper cover and a lower cover,
The lower cover is provided with elastically deformable support legs, and after mounting the monitor television on the lower cover, the upper cover is attached to the lower cover from above the lower cover. An intercom having a structure in which a support leg is elastically deformed so that the monitor television is fixedly held between the upper cover and the lower cover.

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