JP2613624B2 - Optical receiver - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an optical receiver used for optical wireless remote control.

[Prior Art] Conventionally, this kind of optical receiver X used for optical wireless remote control is arranged on a ceiling 8 in order to receive light from a wide range. For example, as shown in FIG. 11, an optical receiver X is fitted and attached to a receiver mounting base Z attached to the ceiling.

[Problems to be Solved by the Invention] However, in the above-described conventional example, the optical receiver X
However, since it is completely exposed including the base Z and is disposed on the ceiling 8, there is a problem that it becomes conspicuous and the appearance of the room is impaired. There was a problem that was troublesome.

The present invention has been made in view of the above points, and the object thereof is to reduce the exposed portion from the ceiling and dispose it so as not to impair the beauty of the room, and furthermore, the construction is easy. It is an object of the present invention to provide an optical receiver capable of performing the above.

[Means for Solving the Problems] An optical receiver according to the present invention is a pair of optical receivers in which a receiver circuit is housed and a flange is formed at a lower portion of a housing body inserted into a mounting hole in a ceiling, and a holding portion is formed at one end. The other end of the W-shaped mounting bracket is pivotally connected to the upper surface of the housing body, and a long hole is formed in the central bent portion of the mounting bracket, and the bolt inserted through the elongated hole and the bolt insertion hole of the flange base. Screw the nut, make the mounting bracket stand upright or overturn freely, insert the housing body into the mounting hole with both mounting brackets in the upright state, tighten the bolt to make the mounting bracket sideways, and hold down the holding part and flange. And so that the periphery of the mounting hole in the ceiling is sandwiched.

[Operation] The present invention is configured as described above, and includes a pair of W-shaped mounting brackets formed with a flange at a lower portion of a housing body inserted into a mounting hole in a ceiling and formed with a holding portion. The nut is screwed onto the bolt inserted into the long hole formed at the center bent portion of the mounting bracket and the bolt insertion hole at the flange base, and the housing body is set up with both mounting brackets upright. Since it is inserted into the mounting hole,
The housing body can be easily inserted into the mounting hole, and the construction can be easily performed. In addition, since the mounting bracket is laid down by tightening the bolt and the periphery of the mounting hole of the ceiling is sandwiched between the holding part and the flange, it can be easily embedded and installed in various ceilings. In addition, the exposed portion from the ceiling is reduced so that the aesthetic appearance of the room is not impaired.

[Embodiment] FIGS. 1 to 8 show an embodiment of the present invention. A housing 1 has a housing body 1a having a flange 10 and a cover formed with an exposure hole 11 of a flanged condenser lens 3. FIG. 1b
The upper opening of the condenser lens 3 is covered with a dedicated filter (visible light cut filter, bandpass filter, etc.) 9 for reducing malfunction due to disturbance light. The flange 3d is fused to the periphery of the exposure light 11. The other end of a pair of W-shaped mounting brackets 14 each having a holding portion 14a formed at one end is pivotally mounted on the upper surface of the housing body 1a. In the central bent portion 14c of the mounting bracket 14, an elongated hole 15 is formed that straddles both sides of the central bent portion 14c, and a bolt insertion hole 19 in the base of the flange 10 and a bolt inserted in the elongated hole 15 are provided. 16 square or rectangular nut
17 is screwed together, and the mounting bracket 14 can be erected or laid down. A rubber band 18 is hooked between the holding portions 14a of the two mounting brackets 14 to hold the two mounting brackets 14 in an upright state.
With the holding portion 14a and the flange 10 sandwiching the periphery of the mounting hole 8a of the ceiling 8. In addition,
The condenser lens 3 covered by the opening 2 of the housing 1 has an outer surface.
This is a wide-angle lens having a convex curved surface 3a and a cross section at the center of the inner surface 3b.A through hole is provided at the center of the condenser lens 3, that is, at the center of the counterbore portion 3c to prevent dew condensation. And a printed circuit board 12 on which a signal processing circuit unit 5 such as an amplifier for amplifying a light receiving signal is mounted.
Is provided on the upper surface.

FIG. 5 to FIG. 7 show the configuration of the mounting bracket 14 and the configuration of the pivoting portion. An L-shaped rubber band hooking section 50 is formed on both sides of the holding section 14a of the mounting bracket 14, On both sides of the base of the mounting bracket 14, pivot shafts 14b protrude. Further, on the upper surface of the housing body 1a, there are formed a pivot support projection 52 having a pivot hole 51 into which one pivot shaft 14b is inserted, and a pivot hole 53 into which the other pivot shaft 14b is inserted. Protrusions 54a, 54b to be formed
Since one protruding piece 54a is formed so as to be able to bend in the vertical direction, the pivot shaft 14b can be easily inserted and inserted.

The elongated hole 15 is formed to be considerably wider than the bolt diameter. However, if the elongated hole is widened over the entire length, the nut 17 is caught on the end of the elongated hole 15 as shown in FIG. In this embodiment, as shown in FIG. 7 (b), the end of the long hole 15 has a width slightly larger than the diameter of the bolt 16 because it interferes with the fastening of the mounting bracket 14 by the bolt 16. A portion 15a is formed to prevent the nut 17 from being caught when the fitting 14 is tightened.

Now, when attaching the optical receiver X to the ceiling 8,
First, as shown in FIG. 1, the housing jig 1a is inserted into the mounting hole 8a in a state where the mounting bracket 14 is erected by the contraction force of the rubber band 18 (indicated by a solid line in the figure), and then the bolt 16 is The mounting bracket 14 is laid down as shown by the imaginary line by tightening, and the opening edge of the mounting hole 8a is clamped by the flange 10 of the housing 1 and the holding portion 14a of the mounting bracket 14 by further tightening the bolt 16. As a result, the optical receiver X can be buried and disposed with a small portion exposed from the ceiling 8, and the construction can be easily performed.

FIG. 8 shows a circuit example of the signal processing circuit section 5, in which a light receiving module 20, a signal processing circuit 21, and a signal output circuit 22 are shown.
And the power supply circuit 23.

FIG. 9 shows a schematic configuration of a remote monitoring and control system using the optical receiver X according to the present invention.
And a plurality of monitoring terminals 32 set with unique addresses,
The control terminal 33, the wireless relay terminal 37, the external interface terminal 38, and the pattern setting terminal 39 are connected by a pair of signal lines 34, and the central control device 31
Is transmitted to the signal line 34 from the transmission line Vs in FIG.
As shown in the figure, a start pulse signal indicating the start of signal transmission
ST, mode data signal MD indicating signal mode, terminals 32, 3
Address data signal AD for transmitting 8-bit address data for calling the 3,37～39, control data signal CD for transmitting the control data for controlling the load L ₁ ~L _4, check sum data signal CS and the terminal 32, 33 , 37-39 is a multi-pole (± 24 V) time-division multiplex signal composed of a return standby signal WT for setting a return period from which data is transmitted by pulse width modulation. Each of the terminal units 32, 33, 37 to 39 captures control data of the transmission signal Vs when the address data of the transmission signal Vs received via the signal line 34 matches its own unique address data, and transmits the data. The monitoring data signal is returned as a current mode signal (a signal transmitted by short-circuiting between the signal lines 34 via an appropriate low impedance) in synchronization with the return waiting signal WT of the signal Vs. Further, the central control unit 31 includes a dummy signal transmitting unit that constantly transmits a dummy transmission signal in which the mode data signal MD is set to the dummy mode, one of the monitoring terminal 32 or the wireless relay terminal 37, and the external interface terminal.
38. When an interrupt signal Vi as shown in FIG. 10 (b) returned from the pattern setting terminal 39 is received,
Detecting the interrupt generating terminal 32, 37-39 and detecting the terminal 32, 37
And an interrupt processing means for accessing to 39 and returning monitoring data. The central control device 31 also uses the monitoring data returned from the monitoring terminal 32 or the wireless relay terminal 37, the external interface terminal 38, and the pattern setting terminal 39 to the central control device 31 as described above. as well as it generates control data to be transmitted to the control terminal 33 to control the load L ₁ ~L ₄ corresponding you are, the control data via the signal line 34 by time-division multiplexing (ii) the control terminal 33 of the and controls the load L ₁ ~L _4.

Here, the wireless relay terminal 37 is a terminal that relays data in an optical wireless system including the optical transmitter Y, the optical receiver X according to the present invention, and the wireless signal line 40, and transmits signals from the optical transmitter Y. The received optical signal is received by the optical receiver X, the received data is received via the wireless signal line 40, and the data is transmitted to the central controller 31.
To be forwarded to. The external interface terminal 38 is a terminal that performs data transmission with the external control device 41, and the pattern setting terminal 39 transmits pattern control data input from the data input unit 42 to the central control device 31. It is a terminal that transfers. The monitoring terminal 32 and the control terminal 33 disposed in the distribution board 36 or the relay control panel 36a have a distribution board agreement size, and the control output thereof is used to control the remote control relay for load control. (Latching relay that can be turned on and off also by a hand switch) 35 is controlled.

[Effects of the Invention] The present invention is configured as described above, and includes a pair of W-shaped mounting brackets in which a flange is formed at a lower portion of a housing body inserted into a mounting hole in a ceiling and a holding portion is formed. A nut is screwed into a bolt that is pivotally attached to the upper surface of the housing body, and is inserted into a long hole formed in the central bent portion of the mounting bracket and a bolt insertion hole of the flange base, and both mounting brackets are erected and the housing body is set up. Is inserted into the mounting hole,
There is an effect that the housing body can be easily inserted into the mounting hole and the construction can be easily performed. Further, the mounting bracket is laid down by tightening the bolt, so that the periphery of the mounting hole of the ceiling is sandwiched between the holding portion and the flange, and there is an effect that it can be easily embedded and arranged in various ceilings. Furthermore, there is an effect that the exposed portion from the ceiling is reduced and the aesthetic appearance of the room is not impaired.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of one embodiment of the present invention, FIG. 2 is a bottom view of the same main part, FIG. 3 is an exploded perspective view of the same, FIG. FIG. 5B is a sectional view of a main part of the above, FIG. 5A is a front view of a main part of the same, FIG. FIG. 6 is an exploded perspective view of the same main part, FIG. 7 is an operation explanatory view of the same, FIG. 8 is a circuit diagram of the same, and FIG. 9 uses an optical receiver according to the present invention. Schematic configuration of remote monitoring and control system, No. 10
FIG. 11 is a view for explaining the operation of the above, and FIG. X is an optical receiver, 1 is a housing, 1a is a housing body,
10 is a flange, 14 is a mounting bracket, 15 is a long hole, 16 is a bolt,
17 is a nut, 18 is a rubber band, and 19 is a bolt insertion hole.

Claims (2)

(57) [Claims] 1. A pair of W-shaped mounting brackets each having a flange formed at a lower portion of a housing main body in which a receiver circuit is housed and inserted into a mounting hole in a ceiling, and a holding portion formed at one end is connected to the other end of the housing. It is pivotally attached to the upper surface of the main body, and a long hole is formed in the center bent portion of the mounting bracket, and a nut is screwed into a bolt insertion hole at the base of the flange and a bolt inserted through the long hole, and the mounting bracket is raised or set up sideways. With the mounting bracket upright, insert the housing body into the mounting hole,
An optical receiver characterized in that the mounting bracket is laid down sideways by tightening bolts so that the periphery of the mounting hole in the ceiling is held between the holding portion and the flange. 2. The optical receiver according to claim 1, wherein a rubber band is hooked between the holding portions of both mounting brackets.