JP2002305778A - Device to be controlled through 2-wire power transceiving communication - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device to be controlled that transceives power with a prescribed controller through two power lines provided to a wireless case and can easily be attached/detached to/from the wiring case. SOLUTION: The wiring case 30 is removably mounted with a display device 1 that makes power transceiving communication with a prescribed controller. The display device 1 is provided with a wiring member in pairs with the wiring case 30. The tip of the wiring member 14 is oriented to a bottom of the wiring case 30 and provided with a contact 142. The part of the wiring case 30 opposed to the bottom is opened and a lock section 30a is formed to the end of a long casing sidewall.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power receiving side device (controlled device) for performing power transmission / reception communication with a power transmitting side device (control device) through two power lines, and mainly relates to the two power lines. The present invention relates to a power-receiving-side device that can be easily attached to and detached from a wiring case in which is disposed.

[0002]

2. Description of the Related Art A two-wire power transmission / reception communication system that performs power transmission / reception communication (a method of simultaneously performing power transmission / reception and data communication) using two power lines is known (Japanese Patent No. 2787976).
issue). In this system, one power transmitting device and a plurality of power receiving devices are connected by two power lines, and while power including information components is transmitted from the power transmitting device, the power receiving device performs power storage and data decoding. Then, when the power transmission side device stops transmitting power, the power receiving side device transmits power including an information component addressed to the power transmission side device based on the stored power. This enables one-to-n power transmission and reception communication with a small amount of wiring.

In an actual application of this two-wire power transmission / reception communication system, the number of power-receiving-side devices may be 20 to 30 or more, and it is necessary to frequently replace the mounting portion of the power-receiving-side device. There may be. Therefore, it is important how to efficiently perform wiring work between the power transmitting side device and each power receiving side device. From the viewpoint of facilitating such wiring, it is convenient to use the wiring duct base described in JP-A-10-177353.

This wiring duct base has a board portion and an engaging portion formed along both ends thereof, and a tape-shaped conductor for transmitting an electric signal or the like along a longitudinal direction on the surface of the board portion. At least two or more substantially parallel duct bases are provided in parallel. The power-receiving-side device is unitized (display unit), and a conductive member that conducts with the power-receiving-side device is provided on the back surface thereof, and locking portions are formed at both ends. The display unit is attached to the front surface of the wiring duct base by engaging the engaging portion with the engaging portion of the wiring duct base. At this time, the conductive member on the back surface of the display unit comes into contact with the tape-shaped conductor to conduct electricity. The engagement strength of the locking portion and the engagement portion of each of the display unit and the wiring duct base is such that the engagement strength of one edge is less than the engagement strength of the other edge, and The display unit is detachable from the wiring duct base from the edge.

In the wiring duct base having such a structure,
The display unit can be mounted at an arbitrary position, and since wiring is performed in advance, wiring work at the time of unit replacement is not required. However, since the wiring duct base having the above-described structure has the engaging portions formed at both ends thereof, there is a limit in the area in which the conductive plate can be mounted. Therefore, if the width of the portion where the wiring unit is to be attached (the width of the wiring unit) can be sufficiently ensured, the width of the wiring unit can be increased, so there is no problem. In addition, the surface dimensions cannot be increased, and many display units cannot be mounted. In addition, the conventional wiring duct base has engaging parts at both ends,
Since the locking unit is formed on the display unit side,
A great deal of force is required when detaching the display unit from the wiring duct base, and there is a problem that operability at the time of replacement is poor. On the other hand, Japanese Patent Application No. 2000-206820 discloses a wiring case for detachably mounting a controlled device that performs power transmission / reception communication with a predetermined control device through two power lines. FIG. 1 is an explanatory view of the wiring case and a state where the controlled device is attached to the wiring case.
(A) and FIG. 1 (b). Each controlled device (also serving as a display device) 1 shown in FIG. 1B has an electronic component operable by the power transmission / reception communication mounted on a surface thereof, and an elastic engagement at a side end thereof. A mechanism 10b is formed, and a pair of wiring members 14 each provided with a contact for conducting to the control device at a front end thereof protrude from the back surface thereof. In the two-wire type wiring case shown in FIG. 1A, a pair of conductive members 31 are respectively provided in a belt-like shape in the longitudinal direction at portions where the contacts can contact, corresponding to the respective contacts of the pair of wiring members. The conductive members 31 have a long casing, and an interval for avoiding interference between the conductive members 31 and the electric power of the other conductive member during energization is maintained. Further, a locking mechanism for detachably mounting the controlled device through the elastic engagement mechanism is formed at a side end of the long casing separated from the conductive member. Further, when the controlled device is mounted, power transmission / reception communication between the controlled device and the control device is enabled through the pair of conductive members and the respective contacts.

Thus, unlike the one described in Japanese Patent Application Laid-Open No. Hei 10-177353, Japanese Patent Application No. 2000-2068.
In the structure described in No. 20, the locking mechanism formed on the long casing is formed at a side end of the long casing,
It is arranged as far as possible from the conductive member 31. Therefore, the width of the conductive member and the distance between the conductive plates can be made wider than when the locking mechanism is formed near the conductive member. By increasing the width of the conductive plate, the conductivity of the conductive plate is increased and the voltage drop is suppressed, so that the number of controlled devices can be increased.

[0007]

However, in the configuration described in the above-mentioned Japanese Patent Application No. 2000-206820, there is room for removing the controlled device 1 more easily. In this configuration, when the controlled device 1 is to be detached, usually, the controlled device 1 is removed by gripping the grip portion 10a of FIG.
a, it is necessary to remove it by hooking it, and a relatively large force is required. In addition, when the coefficient of friction between the hand and the grip 10a is reduced due to factors such as the hand of a person who intends to remove the controlled device 1 getting wet, it becomes difficult to remove the controlled device 1. An object of the present invention is to provide a power receiving-side device (controlled device) that performs power transmission / reception communication with a power transmitting side device (control device) through two power lines, provided in a wiring case provided with the power line. An object of the present invention is to provide a controlled device that can be easily attached to and detached from a wiring case by providing an engagement mechanism that can be engaged with and released from a stop.

[0008]

In order to solve the above-mentioned problems, a controlled device of the two-wire power transmission / reception communication according to the present invention is provided with a power transmission / reception communication between a predetermined control device and two power lines. A controlled side device, wherein the controlled device has an electronic component operable by the power transmission / reception communication attached to a front surface portion thereof, and the front end portion is electrically connected to the electronic component from a back surface portion thereof. A pair of wiring members provided with contact points that protrude, and the controlled device,
It is provided in the wiring case detachably, this wiring case,
Corresponding to each contact point of the pair of wiring members, a pair of conductive members is provided at a site where the contact points can be contacted, and each of the pair of conductive members is provided with a long casing provided in a strip shape in the longitudinal direction.
An interval for avoiding interference with the power of the other conductive member at the time of energization is maintained, and a side end of the long casing separated from the conductive member is provided in the controlled device. In a device in which a locking portion for locking an engagement mechanism is formed, the controlled device includes an engagement portion engageable with a locking portion provided in the long casing. Has a joint mechanism,
The engagement mechanism includes an engagement state in which the engagement portion engages with the engagement portion to fix the controlled device, and an engagement state in which the engagement portion is disengaged from the engagement portion to control the controlled device. And a disengaged state in which the device can be detached.

Preferably, the engagement mechanism has an auxiliary member movably provided to be able to take a first position and a second position, and moves the auxiliary member to the first position. Then, the engagement portion moves to a position where the engagement state is established,
By moving the auxiliary member to the second position, the engaging portion is moved to a position where the engagement is released. In addition, a pair of the engaging portions are arranged so as to face each other across a longitudinal center line of the long casing, and each of the engaging portions is moved by moving the auxiliary member to a first position. By moving the auxiliary member to the second position, the portion moves to a position where the portion is in an engaged state with the locking portion provided on the long casing corresponding to the engaging portion, and the auxiliary member is moved to the second position. It is good also as composition which a pair of engaging parts are each moved to the position which becomes the said disengagement state.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a two-wire type wiring case of the present invention will be described. Here, an example will be described in which the present invention is applied to wiring of a remote control system that remotely manages products arranged on a product display shelf.

FIG. 2 is an overall configuration diagram of a remote control system to which the present invention is applied. This remote control system performs power transmission / reception and data communication between two or more display devices 1 as an example of a controlled device and a monitoring and control device 2 as an example of a control device via two power lines 3. (Hereinafter, “power transmission / reception communication”). A controller CON for managing product data is connected to the monitoring control device 2.

The two power lines 3 are arranged substantially in parallel inside the wiring case 30 so that when the display device 1 is mounted on the wiring case 30, the power lines 3 are electrically connected to the electronic components of the display device 1. Has become. The wiring case 30 is provided at a predetermined position on a product display shelf. In FIG. 2, in order to clearly show the connection between the plurality of display devices 1 and the monitoring control device 2, the electrical connection relationship between these devices is indicated by a dashed line.

The contents of the power transmission / reception communication from the monitoring control device 2 to the display device 1 mainly include the supply of power and the transmission of a command as control data and related data. On the other hand, the power transmission / reception communication from the display device 1 to the monitoring control device 2 is a transmission of a command execution result, status information indicating the status of the own device, and the like.
At the time of power transmission / reception communication, an address assigned to each display device 1 is used. The communication protocol in the monitoring control device 2 is common to all the display devices 1.

Next, a configuration example of the display device 1 mounted on the wiring case 30 will be described. The structure of the wiring case 30 is the same as that of the conventional example shown in FIG. In detail, the wiring case 30 detachably mounts the display device 1 that performs power transmission / reception communication through two power lines with a predetermined control device. In this example, the wiring case 30 is formed by molding a resin-made long casing having a substantially U-shaped cross section, and two conductive plates 31 (conductive members) are juxtaposed inside the bottom surface portion. In this example, they are arranged in parallel. The power transmission / reception communication line in the wiring case 30 is connected to these conductive plates 3
1. 3A is a front view of the display device 1, FIG. 3B is a side view, FIG. 3C is a rear view, and FIG. 3D is a view as viewed from the direction indicated by the arrow in FIG. Display device 1
Has a substantially rectangular front lid housing that can be a lid of the wiring case 30, and the display unit 11 is provided on the front side of the front lid housing.
Are formed. The wiring member 14 is formed to protrude from the back surface side of the lid housing. As will be described later, an engaging body K having an engaging portion 10c is incorporated in the lid casing. , And a state in which it does not engage with the locking portion 30a. FIG. 3D shows a state in which the engaging portion 10c is engaged with the locking portion 30a. Further, a tapered grip portion 1 is provided on the front end of the lid housing so as to be easily gripped by an operator.
0a is formed.

The display unit 11 is provided with a plurality of LEDs for expressing characters, symbols, and numbers. The display unit 11 also serves as a lamp switch for inputting data. Therefore, by pressing the display unit 11 itself,
Data input is possible, and there is no need to separately provide a lamp switch, so that manufacturing costs can be reduced. In addition, the display device 1 is provided with an opening 12 in which a convex portion 1 of an auxiliary member H described later is provided.
0h is inserted. The button switch 13 shown in FIG. 3 is used for canceling the content displayed on the display unit 11 or changing the content displayed on the display unit 11. In the illustrated example, the button switch is displayed as “Fn” as a function switch. The display section 11 and the button switch 13 output one of the binary signals by pressing or releasing the button. Also, + key 235,-
A key 236 is also provided, and these keys are used, for example, to increase or decrease a numerical value to be input.

A pair of wiring members 1 are provided on the back of the lid housing.
4 are implemented. When the display device 1 is mounted on the wiring case 30, the wiring member 14
2 are configured to elastically contact the power transmission / reception communication line 3 respectively. By doing so, each power line of the power transmission / reception communication line 3 and the contact point of each wiring member 14 can be reliably conducted only by pushing the lid casing into the wiring case 30. Further, in this embodiment, since the lid casing is formed by injection molding, the screw portion does not protrude outward unlike the conventional product in which the extruded material is a casing as shown in FIG. . In addition, since the housing is formed by injection molding, the degree of freedom in product design can be increased, and a futuristic design utilizing a curved surface can be obtained. Further, by providing the lens 240, as described above, an LED is provided below the lens.
By illuminating the display unit 11 with light from this LED by providing a light emitting device such as the above, it is also possible to enhance the visibility of numbers, characters, and the like displayed on the segment LED 242.

As shown in FIG. 3D, the display device 1 according to the present embodiment is provided with the back plate 143, and even when the display device 1 is detached from the wiring case 30, the entire surface of the housing side and the entire back surface are integrated. It has been modularized. Thus, the handling of the display device 1 alone becomes very simple. As shown in FIG. 1 (b), the conventional product has a difficulty in handling because there is no back plate, but in the present embodiment, since the back plate 143 is provided, the handling is easy. In addition, unlike the conventional case having only the surface of the extruded material, the entire case has a shape that is hardly distorted because the entire surface is a box-shaped case.

Conventionally, four to six screws were required in the housing.
Since only one is used, the assembling time can be reduced. The material of the housing uses the flame retardancy of ABS to enhance safety. Further, as shown in FIG. 3, the display unit 11 can also serve as a switch for performing data input. In this embodiment, the display unit 11 also functions as a lamp switch. In the related art, such a switch is provided separately from the display unit 11. However, the display unit 11 itself is a lamp switch (also referred to as a “confirm” switch). The area used as the display unit can also be secured as an area for the lamp switch in the present embodiment, and the size of the lamp switch itself can be increased. In particular, in the present embodiment, the switch is more easily pushed by providing a switch space for four fingers. In addition, the switch has a slight curvature on its surface to enhance the operational feeling compared to the case where the switch is simply flat. The switch surface may be a part of a spherical surface, or a part of a paraboloid of revolution or a hyperboloid of revolution. Also, by incorporating springs at four positions of the switch, the switch is reliably returned after being pressed.

As described above, in the present embodiment, since the seven-segment window itself on which the number (or symbol) of the display unit 11 is displayed is a lamp switch, "the product unit is searched and aimed. It is not necessary to perform the operation of “pressing by pressing”, and it is only necessary to press the displayed window (switch), so that the viewpoint need not be moved. Furthermore, two parts of the switch used in the lamp switch have a durability of 3 million times, which is highly reliable.
In addition, in consideration of cracking, the material is made of an acrylet which is stronger than ordinary acrylic.

The relationship between the power transmission / reception communication unit 15, the data processing unit 16, and the display control unit 17 is as shown in FIG. As shown in FIG. 5, the power transmission / reception communication unit 15 converts the powers Da and Db received from the power line 3 into
A rectifier circuit 151 that converts the rectified voltage into DC power (voltage) by bridge rectification;
(<Vcc) voltage comparison unit 152 for determining whether or not
When the rectified voltage is equal to or higher than Vdd, a storage battery 153 stores the rectified voltage, and a reception buffer that converts level inversion information of the balanced pulsed power received from the power line 3 into logic information Rd1 including a combination of logic 1 and logic 0. 156,
The power level on the power line 3 is determined based on the logic information Rd1 sent from the reception buffer 156, and the initial logic level recognized by the power transmission / reception communication unit 15 is logic 1 (logic 0).
), And data for identifying the own device (own device address) and pulse group data representing the information content addressed to the monitoring and control device 1 are generated, and the required data is generated. Data processing unit 1 that performs processing
54. The data processing unit 154 is formed by reading and executing a program code recorded in a memory area (not shown) by a CPU (not shown) of the present apparatus. A data comparison process for detecting an address addressed to the device and power reception stop data, that is, a delimiter (data transmission end code), and a control signal for taking in stored power from the battery 153 and transmitting power from the power transmission / reception communication line 3 when each of the data is detected. Is performed.

Further, the control signal and the polarity discrimination unit 15
5 has a transmission buffer 157 that controls power supply to the power line 3 based on the signal Td3 output from the power line 5. The stored power PD stored in the battery 153 is stored in the data processing unit 1.
A data processing unit 16 that complements the display unit 54;
Is transmitted to the display control unit 17 which controls the above. Also,
The content of the display control can be defined based on the data Rd3 output from the data processing unit 154, and the content of the operation by the operator can be input to the data processing unit 154 and transmitted to the monitoring control device 2. . The monitoring control device 2 performs a predetermined monitoring control process. In this embodiment, by creating a two-wire transmission / reception-dedicated IC, the microcontroller of the control unit (data processing unit) can perform various selections depending on functions. Therefore, it is possible to easily meet user specifications. Conventionally, everything including microcontroller is 1
Because it was a single IC, 1C had to be changed in order to make it multi-functional, so it took enormous costs.

Next, the display device 1 of the present embodiment will be described. FIG. 6 is a diagram showing a structural example of the display device 1.
(A), the engaging portion 10c is housed in a lid housing,
Explanatory drawing in a state where the engaging portion 30a of the long casing is disengaged from the engaging portion 30a, (b) is an explanatory diagram in a state where the engaging portion 10c is engaged with the engaging portion 30a, and (c) is a diagram. FIG. 6B is a sectional view taken along line AA ′ of FIG. FIG. 6A shows a state where the liquid crystal display unit of the display unit 11 is removed for convenience of explanation. FIG. 6A is an explanatory view showing a state where an enclosing member 202 described later is attached, and FIG. 6B shows a state where the enclosing member 202 is removed and a partition plate 234 is attached. As described above, in FIGS. 6A and 6B, there is a difference between whether the liquid crystal display unit is removed or the enclosure member 202 is attached, but these are different from the following engagement unit 10c. This does not affect the description of the engagement state with the locking portion 30a.

As shown in FIG. 7A, the engaging portion 10c
Is provided on the support 10d so that the engaging portion 10c protrudes from the support 10d. The support 10d has a through-hole 10e and a protrusion 1 protruding from the support 10d.
0f is provided. These members 10c to 10f
Thereby, the engagement body K is formed. Note that the engaging portions 10c,
It is of course possible to integrally mold the support 10d and the protrusion 10f.

As shown in FIGS. 6 (a) and 6 (b), the engaging members K are arranged so as to be opposed to each other with the longitudinal center line of the long casing therebetween, and the auxiliary member H With each other. The auxiliary member H is shown in FIG.
As shown in (b), the support 10g and the support 10
6a, and a protrusion 10h projecting toward the display unit 11 in FIG. 6A, and a support 10g projecting from the back surface side in FIG. 6A to be substantially parallel to each other and perpendicular to the longitudinal direction of the display device 1. A pair of legs 10i provided along the direction,
10i and a front edge 10j.

In FIG. 6 (a), the engaging body K is arranged with the shaft B provided on the lid casing inserted into the through hole 10e. K
Is rotatable. An auxiliary member H is disposed above the engagement body K (on the front side of the display device 1).
The protrusion 10f of the engaging body K is fitted in a groove formed between the pair of legs 10i of the auxiliary member H. Further, the auxiliary member H has its convex portion 10h fitted into the opening 12 provided in the display device 1, and the entire auxiliary member H can be moved by moving the convex portion 10h in this opening. Has become. In this embodiment, the opening 12 extends along the longitudinal axis of the display device 1, and in this opening 12, for example, the operator grasps the convex portion 10 h and moves along the longitudinal axis of the display device 1. Thus, the entire auxiliary member H can be moved along the longitudinal axis of the display device 1.

In this embodiment, by moving the auxiliary member H to the right side in FIG. 6 (in the direction of A in FIG. 6), the protrusion of the engaging body K fitted between the pair of legs 10i of the auxiliary member H is obtained. The portion 10f also moves in the direction of A in FIG. 6, whereby the engagement body K rotates about the axis B and the engagement portion 10c is housed in the lid housing as shown in FIG. Become. In this state, since the display device 1 is not in any engagement state with the long casing, the display device 1 can be easily taken out from the long casing. In this case, since the engaging body K rotates, the convex portion 10f also makes a circular motion.
f moves not only in the longitudinal axis of the display device 1 but also in a direction perpendicular to the longitudinal axis. Therefore, as the protrusion 10f itself moves in the longitudinal direction, the protrusion 10f also moves in a direction perpendicular to the longitudinal direction in the groove between the legs 10i.

On the other hand, by moving the auxiliary member H to the left side in FIG. 6 (in the direction of A 'in FIG. 6), the convex portion 10f of the engaging body K fitted between the pair of legs 10i of the auxiliary member H. 6 also moves in the direction of A ′ in FIG. 6, whereby the engaging body K rotates around the axis B in the opposite direction as when the auxiliary member H is moved to the right, and the engaging portion 10 c is used for the lid. Protruding from the housing,
The state shown in FIG. 6B is engaged with the locking portion 30a of the long casing. In this state, the locking portion 30a of the display device 1 is engaged with the locking portion 30a of the long casing.
Is securely attached to the long casing.

Also in this case, since the engaging member K rotates, the convex portion 10f is also moved in the groove between the leg portions 10i in the same manner as when the auxiliary member H is moved rightward in FIG. Move in a direction perpendicular to the direction.

With the above configuration, the operator moves the auxiliary member H through the convex portion 10h functioning as a single attaching / detaching button.
It is possible to repeat a series of operations of engaging portion 10c simultaneously catching and releasing with respect to a. In addition,
In this embodiment, the movement of the auxiliary member H is manually performed by the operator through the convex portion 10h. However, for example, by providing a switch of the display device 1 or a dedicated switch and pressing the switch, the electric member can be moved. The auxiliary member H may be moved by a formula (or by using other power). Thereby, even if it is not a skilled person, the display device 1 can be easily obtained.
Can be attached and detached. As a result, the display and the items on the product display shelf can be moved at the same time, and the location can be easily changed.

Although the engagement body K has been described as a pair, the display device 1 can be easily attached to the wiring case 30 even if only one of the engagement bodies K is used. In other embodiments described later, the locking portions 3 of the wiring case 30 are also provided.
The display device 1 may be simply attached to the wiring case as a configuration using only one of the pair of members used for engagement with the wiring case. Conventionally, when removing the main unit from the duct base, tools such as a flathead screwdriver were used to pry the main unit from the hooked part of the base.However, with the removable button, it can be easily removed without tools. it can. Although not shown, preferably
In the display device 1, each of the pair of engagement members K rotates in the direction in which the engagement portion 10c projects so that the engagement portions 10c of the pair of engagement members K always project from the display device 1. For example, a means for applying a bias force, such as a spring, is provided. By providing such means, a bias force is applied to each of the pair of engagement bodies K so as to be in the state of FIG. 6B. The means for applying the bias force is not limited to a spring, and any means for applying the bias force can be used. Further, a configuration may be adopted in which this spring or a means for applying a bias force is not provided. In this case, the engaging portion 10c and the engaging portion 30a are stably engaged with each other.
Preferably, a hook portion is provided on one of the c and the locking portion 30a, and a hook receiving portion is provided on the other, so that one hooks the other.

In FIGS. 6 (a) and 6 (b), for convenience of explanation, the members 10c to 10j show only the outline irrespective of the vertical relationship. The member H has a positional relationship in which the auxiliary member H is sandwiched between the engagement body K and the surface of the display device 1. Further, the convex portion 10h of the auxiliary member H is configured so that an operator can move the convex portion 10h. In this embodiment, the convex portion 10h protrudes from the opening 12 so that the operation can be performed. It is possible for a person to grasp the convex portion 10h and move it within the opening portion 12.

As shown in FIG. 6 (a), between the display unit 11 and the lid housing, there is provided a water receiving portion for preventing water droplets entering from the gap of the lamp switch from directly penetrating into the internal substrate. An enclosure member 232 is provided, and has a simple protective effect. As the surrounding member 232, a waterproof packing made of rubber or the like may be used. Also, as shown in FIG. 6A, in this embodiment, the internal LEDs 233a, 233
3b and 233c are provided, and a plurality of LEDs are provided. Of course,
Although a configuration in which only one internal LED is used can be adopted, the use of a plurality of LEDs as in the present embodiment makes it possible to change the emission color of the component element of each internal LED. In addition, by mounting LED elements of different colors in one lens 240, 3
Different types of colors may be displayed. In this case, LE
It is possible to adopt a configuration in which the colors of the D lamps are different from each other, such as red, green, and yellow, and the LEDs that emit light are selected according to the situation. This allows a specific LED to emit light in a specific situation, for example, to emit only the red LED during a failure, so that the current situation can be changed simply by checking the LED emission state. It is also possible to easily grasp, and it is possible to increase the added value of the display device 1 according to the present embodiment.

As shown in FIG. 6B, the display device 1 can be provided with a partition member 234. The partition member 234 covers the LED 233b located in the middle of the three LEDs so that the light does not reach the display unit 11, and the other LEDs are not covered.
According to this configuration, since the LED lamp is turned on (blinks) in two places, the visibility is further improved. Further, since the inside of the lit (flashing) lens is divided into two (one side and the other side of the partitioning member 234) by the partitioning member 234, only one side (for example, the upper side in FIG. 6) is lit (flashing). Alternatively, only the other side (for example, the lower side in FIG. 6) can be turned on (blinks), and an additional function is added to the conventional one. Further, this partition plate can be configured to be detachable. In this manner, a product having the partition member 234 can be easily obtained by providing the partition member 234 as needed based on a product without the partition member 234. The number of arranged LEDs and the number of LEDs covered by the partition member 234 can be arbitrarily determined. By arranging the partition member 234, when the LED disposed on one side of the partition member 234 emits light, the light from the LED does not reach or hardly reaches the other side of the partition member 234. What is necessary is just what becomes. The + key 235, the-key 236, and the Fn key 13
Since it is fitted with a rubber material without any gaps inside the housing, water does not enter and has a waterproof effect.
For example, the + key is colored green, the-key is red, and the Fn key is colored blue, so that the color arrangement can be easily understood visually. The + key 235, the-key 236, and the Fn key 13 can be activated and deactivated by instructions from the computer, and can be used not only as + and-functions but also as multi-function keys. Further, in the present embodiment, the connector of the contact point that comes into contact with the metal tape of the duct base is dedicated, and two parts conventionally used are one, so that the mounting can be simplified and the parts cost can be reduced.

Next, a display device according to another embodiment will be described. 8, 9, and 10 are diagrams illustrating a configuration example of another engagement mechanism of the display device 1. 8A and 8B are explanatory views of an engagement mechanism according to another embodiment. FIG. 8A is a top view in an engaged state, FIG. 8B is a front sectional view thereof, and FIG.
FIG. 8D is a top view in the disengaged state, and FIG. 8D is a front view thereof. In the embodiment shown in FIGS. 8A to 8D, the display device 1 is provided with a pair of through holes 210 and incorporates a pair of engaging portions 201. This engagement portion 20
Reference numeral 1 denotes an L-shaped base 201a and a protrusion 201 protruding from one side of the base 201a and fitted into the above-described through hole 210.
b and the wiring case 30 projecting from the other side of the base 201a.
And a protruding portion 201c that can be engaged. The engagement portion 201 is movable in the display device 1 in a direction perpendicular to the longitudinal direction of the display device 1 in the through hole 210. Although not shown, preferably, a bias force is applied to the display device 1 so that the pair of engagement portions 201 is always at the position farthest from the longitudinal center line of the display device 1. A spring is provided. Due to this spring, the pair of engaging portions 201 respectively move the display device 1 as shown in FIG. 8A and its front view, FIG. 8B.
The bias force is applied so as to be at a position farthest from the center line in the longitudinal direction. The means for applying the biasing force is not limited to a spring.
Any means can be used as long as it provides a bias force. Further, a configuration may be adopted in which this spring or a means for applying a bias force is not provided.
A hook portion is provided on one of the engaging portion 201 and the locking portion 30a so that the locking portion 30 and the locking portion 30a are stabilized in the engaged state.
It is preferable that a hook receiving portion is provided on the other side so that one hooks the other side. In the state of FIGS. 8A and 8B, since the protruding portion 201 c protrudes from the display device 1 and is engaged with the locking portion 30 a of the wiring case 30,
The display device 1 is fixed to the wiring case 30.

When the display device 1 is detached, FIG.
As shown in FIG. 8D, which is a front view thereof, a force is applied to each of the projections 201b of the pair of engagement portions 201 in a direction toward the longitudinal center line of the display device 1,
It is assumed that the pair of engaging portions 201 are both close to the longitudinal center line. In this state where the display device 1 is shifted to the center line, the projection 201c is disengaged from the locking portion 30a of the wiring case 30.
It can be easily removed from. 8 (a) and 8 (c), only the outline of the engaging portion 201 and the through hole 210 is shown. In this embodiment, the movement of the engaging portion 201 is manually performed by the operator through the convex portion 201b. However, for example, a switch of the display device 1 or a dedicated switch is provided and the switch is pressed. Thus, the engaging portion may be moved by an electric method (or by using other power). This allows the display device 1 to be easily attached and detached even by a non-expert. As a result, the display and the items on the product display shelf can be moved at the same time, and the location can be easily changed.

FIG. 9 is an explanatory view of an engagement mechanism according to another embodiment. FIG. 9 (a) is a top view in an engaged state, and FIG.
9B is a front sectional view, FIG. 9C is a top view in the disengaged state, and FIG. 9D is a front view. FIG. 9 (a)
In the embodiments shown in (d), the display device 1 is provided with a through hole 211, and a pair of engagement portions 202 and an auxiliary member 203 are incorporated. The engagement portion 202 includes a U-shaped base 202a having a bottom surface and a pair of side surfaces extending from the bottom surface, an extension portion 202b projecting from one side surface of the base portion 202a and having a through hole 202d,
There is provided a protruding portion 202c that can be engaged with the locking portion 30a of the wiring case 30. The auxiliary member 203 includes a base 203a on a flat plate, and a pair of triangular prism-shaped protrusions 203 projecting from opposite ends of the base 203a and having oblique sides facing the inside of the base 203a.
b, and a projection 203c provided at the center of the base 203a so as to project on the opposite side to the projection 203b. The engaging portion 202 and the auxiliary member 203 are formed such that the auxiliary member 203 is sandwiched in the display device 1 between the engaging portion 202 and the surface of the display device 1 and at least a part of the protruding portion of the auxiliary member 203. Are fitted in the through-hole 202d, and at least a part of the convex portion 203c is fitted in the through-hole 211.

FIG. 9 (a) and its front view, FIG.
In the state (b), the auxiliary member 203 is closest to the display unit 11 side of the display device 1, and in this state, each through hole 202 d is in the form of a triangular prism-shaped protrusion 203 b.
And the distal end of the protruding portion 203b engages at a position away from the longitudinal center line of the long casing of the wiring case 30. As a result, each engaging portion 202 also moves to a position away from the center line. Become. Accordingly, each of the protrusions 202c is also located at a position separated from the center line, and protrudes from the display device 1 so as to be engaged with the locking portion 30a of the wiring case 30, whereby the display device 1 is fixed to the wiring case 30. State. Although not shown, in the example of FIG.
The display device 1 always includes a pair of engagement portions 202.
A spring is provided for applying a biasing force at a position farthest from the center line in the longitudinal direction. Due to this spring, the pair of engaging portions 202 are positioned farthest from the center line in the longitudinal direction of the display device 1 as shown in FIG. 9A and FIG. 9B which is a front view thereof. The bias force is applied so as to be in the state described above. The means for applying the bias force is not limited to a spring, and any means for applying the bias force can be used.

When removing the display device 1, FIG.
As shown in FIG. 9D, which is a front view thereof, a force is applied to the convex portion 203c of the auxiliary member 203 so as to push it. As a result, the auxiliary member 203 sinks into the display unit 11, and each through-hole 202 d forms a triangular prism-shaped protrusion 203 b and the length of the wiring case 30 at the root side (closer to the base 203 a) of the protrusion 203 b. The engagement is performed at positions near the center line in the longitudinal direction of the shaku housing. As a result, the pair of engagement portions 202 are also at positions near the center line. Accordingly, each protruding portion 202c also moves to a position near the center line and is accommodated in the display device 1, and does not engage with the locking portion 30a of the wiring case 30. As a result, the display device 1 can be easily removed from the wiring case 30.
9 (a) and 9 (c), only the outline of the engaging portion 202, the auxiliary member 203, and the through hole 210 is shown. In this embodiment, the movement of the auxiliary member 203 is manually performed by the operator through the convex portion 203c. However, for example, a switch of the display device 1 or a dedicated switch is provided and the switch is pressed. Alternatively, the engaging portion may be moved electrically (or by using other power).

FIG. 10 is an explanatory view of another engagement mechanism of the present invention. FIG. 10 (a) is a top view in the engaged state, and FIG. 10 (b) is a top view in the disengaged state. In the embodiment shown in FIGS. 10A and 10B, the display device 1 incorporates an engagement mechanism 204. The engagement mechanism 204 includes a pair of engagement portions 204a that can be engaged with the engagement portions 30a of the wiring case 30, a rotation member 204c including a tab 204d and rotatable around a central portion, and a rod-shaped member. One end thereof is provided at a portion other than the center portion of the rotating member 204c so as to be pivotable about the portion, and the other end is provided at an arbitrary portion of the engaging portion 204 so as to be pivotable about the portion. Pair of rods 204b
And. In this embodiment, as shown in FIG. 10 (a), when the locking portion 30a of the wiring case 30 and the engaging portion 204a are engaged, a pair of the engaging portions 204
a is a position apart from the longitudinal center line of the long casing of the rotating member 204c and the wiring case 30, respectively.
The engagement portion 204a protrudes from the display device 1. Further, the pair of engaging portions 204a can move in a direction perpendicular to the longitudinal center line of the above-described long casing, respectively, and preferably move in parallel in the perpendicular direction.

With this configuration, when the operator grasps the tab 204d from the state of FIG. 10A and rotates the rotating member 204c about the center of the tab 204d, the engaging portion 204
10A moves to a position close to the longitudinal center line of the above-described long casing as shown in FIG. 10B and is accommodated in the display device 1. Therefore, the locking portion 30a of the wiring case 30 and the engaging portion 2
The engagement state with 04a is also released. For convenience of explanation, a pair of engaging portions 204 are shown in FIGS.
a, the rotating member 204c, and the pair of rods 204b each show only the outline thereof. As in the other embodiments, the rotating member 204c may be automatically rotated by a corresponding switch not only in a manual manner but also in an electric manner or other manners.

[0041]

As described above, in the present invention, this power line is connected to the power receiving side device (controlled device) that performs power transmission and reception communication with the power transmitting side device (control device) through two power lines. By providing an engagement mechanism that can be engaged with and disengaged from the locking portion provided on the wired wiring case, the controlled device can be easily attached to and detached from the wiring case.

[Brief description of the drawings]

FIG. 1A is an explanatory view of a wiring case, and FIG.
FIG. 5 is an explanatory view of a state in which a controlled device according to a conventional example is attached to a wiring case.

FIG. 2 is an overall configuration diagram of a remote control system to which the present invention is applied.

3A is a front view of the display device 1, FIG. 3B is a side view, FIG. 3C is a rear view, and FIG. 3D is a view seen from a direction indicated by an arrow in FIG.

FIG. 4 is a schematic explanatory diagram of a functional configuration of the display device 1.

FIG. 5 is an explanatory diagram of a detailed configuration of a power transmission / reception communication unit of the display device.

FIG. 6 is a diagram showing a structural example of the display device 1, and FIG.
Is an explanatory view in a state where the engagement portion 10c is released from engagement,
(B) is an explanatory view of the engagement portion 10c in the engaged state, (c).
FIG. 7 is a sectional view taken along line AA ′ of FIG.

FIG. 7A is an explanatory view of an engagement body K, and FIG.
It is explanatory drawing of the auxiliary member H.

8A and 8B are explanatory views of an engagement mechanism according to another embodiment of the present invention. FIG. 8A is a top view in an engaged state, FIG. 8B is a front sectional view thereof, and FIG. Top view in the unlocked state,
(D) is the front sectional view.

9A and 9B are views for explaining an appearance of a wiring case according to another embodiment of the present invention, wherein FIG. 9A is a top view in an engaged state, FIG. 9B is a front sectional view thereof, (c) is a top view in the disengaged state, and (d) is a front sectional view thereof.

10A and 10B are views for explaining the appearance of a wiring case according to another embodiment of the present invention, wherein FIG. 9A is a top view in an engaged state, FIG. (c) is a top view in the disengaged state, and (d) is a front sectional view thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Display apparatus 2 Monitoring and control apparatus 3 Power transmission / reception communication line 10a Gripping part 10c Engaging part 10d Support body 10e Through hole 10f Convex part 10g Support body 10h Convex part 10i Leg 11 Display part 12 Opening 13 Fn key 14 Wiring member 15 Power transmission / reception communication unit 16 Data processing unit 17 Display control unit 30 Wiring case 30a Locking portion 31 Conductive plate 142 Contact 143 Back plate 151 Rectifier circuit 152 Voltage comparator 153 Battery 154 Data processor 155 Polarity discriminator 156 Receive buffer 157 Transmit buffer 201 engagement part 201a base part 201b convex part 201c projection part 202 engagement part 202a base part 202b extension part 202c projection part 202d through hole 203 auxiliary member 203a base part 203b projection part 203c projection part 204 engagement mechanism 204a engagement part 2 4b rod member 204c rotary member 204d tabs 205 key 206 key 210 through hole 211 through holes 232 member 234 partition member 235 + Key 236 - Key 240 lens 241 Screw

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G09F 9/00 351 G09F 9/00 351 H02B 1/20 H02B 1 / 20F // A47F 5/00 A47F 5 / 00 EF term (reference) 3B118 FA03 FA15 5G016 AA09 DA45 5G435 AA17 BB04 EE13 EE41 EE49 GG21 LL01 5K048 AA01 BA01 CA08 DA02 DC06 EA11 EB02 FB08 FC01 HA01 HA02 HA05 HA07 HA11 HA21

Claims (3)

[Claims] 1. A controlled device that performs power transmission / reception communication with a predetermined control device through two power lines, wherein the controlled device is operable on the surface portion by the power transmission / reception communication. An electronic component is mounted, and a pair of wiring members provided with contacts for conducting with the electronic component are respectively protruded from the back surface of the electronic component, and the controlled device is detachably attached to a wiring case. This wiring case is provided with a long casing in which a pair of conductive members are respectively attached in a band shape in the longitudinal direction at portions where the contacts can contact, corresponding to each contact of the pair of wiring members, These conductive members are maintained at intervals to avoid interference with the power of the other conductive member during energization, and the side end of the long casing separated from the conductive member has The engagement mechanism provided in the controlled device In a device in which a locking portion for locking is formed, the controlled device has an engagement mechanism including an engagement portion capable of engaging with the locking portion provided in the long casing. The engagement mechanism includes an engagement state in which the engagement portion engages with the engagement portion to fix the controlled device, and an engagement state in which the engagement portion is released from the engagement portion. A controlled-side device for two-wire power transmission / reception communication, which can be in a disengaged state in which the controlled device can be removed. 2. The engaging mechanism has an auxiliary member movably provided to be able to take a first position and a second position, and by moving the auxiliary member to the first position. Moving the engaging portion to the engagement state and moving the auxiliary member to the second position, whereby the engagement portion is moved to the disengagement position. The controlled device of the two-wire power transmission / reception communication according to claim 1. 3. A pair of the engaging portions are arranged so as to face each other across a longitudinal center line of the long casing, and by moving the auxiliary member to a first position, Each of the engagement portions is moved to a position where it is in an engagement state with each of the engagement portions provided on the long casing corresponding to the engagement portion, and the auxiliary member is moved to the second position. 4. The controlled device of the two-wire power transmission / reception communication according to claim 3, wherein the pair of engagement portions are moved to positions where the engagement portions are in the disengaged state.