JPH0438912A - Delivery article-receiving box - Google Patents

Abstract

PURPOSE:To easily find the existence of delivery articles even from a distant place and to prevent the invasion of person's privacy, by a method wherein, when the delivery articles are chuted, a liquid crystal panel varies in the state of opacity and, on the other hand, when an opening door for taking-out the delivery articles is opened, the liquid crystal panel varies in the state of transparency. CONSTITUTION:A microswitch 3 by which it is detected if an opening flap for a chuting opening 1 is opened, is mounted. When the opening flap is opened, therefore, the microswitch 3 outputs its detected signal. Delivery articles are taken out through a taking-out opening 2, by opening a door 7. A microswitch 4 for detecting the opening of the door is provided at the lower end of the inside of the door 7. When the door 7 is opened, therefore, the microswitch 4 outputs its detected signal. The signal detected by such the microswitches 3, 4 is inputted in a driving circuit 5 for a liquid crystal panel, and the control that a liquid crystal panel 6 is made transparent or opaque, is done in the driving circuit 5.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a delivery box into which mail and parcels are placed.

<Prior Art> Conventionally, most mailboxes, for example, have a mail slot at the upper front of the box, and the mail is taken out by opening the front door.

The front door may have no space other than the slot, or the slot may be covered with an opening/closing lid so that the mail stored inside cannot be seen.

<Problems to be Solved by the Invention> However, in the conventional mailbox mentioned above, where the slot is covered with an opening/closing lid, the presence or absence of mail cannot be checked without opening the front door each time. Even if there is no gap other than the input slot, it is difficult to check the presence or absence of mail from the input slot, and if the front side is made of a transparent plate, there is a possibility that the mail will be passed on to a third party. There are many disadvantages such as being visible and compromising privacy.

In view of the above-mentioned problems, the present invention provides a delivery box that allows you to easily check whether there is a delivery or not, even from a distance, without having to open the front door each time, and without compromising privacy. The purpose is to

<Means for Solving the Problems> The delivery receiving box of the present invention is provided with an inlet for receiving a delivery and an outlet for taking out the delivery.
The delivery receiver is provided on the front side of the box, and includes a liquid crystal panel that can select between two states, a transparent state or an opaque state, a first sensor that detects that the delivery item has been put into the slot, and It has a second sensor that detects that the delivery opening is open, and a drive circuit that inputs the detection signals output by the sensors and drives the liquid crystal panel, and the drive circuit includes: It has a bistable memory element that stores the state in which the detection signal of the first sensor is output and the state in which the detection signal of the second sensor is output, and the liquid crystal panel It is characterized in that it is configured to be controlled to one of two states, and -N.

<Operation> A first sensor detects that the delivery port is opened, and a second sensor detects that the delivery port is opened.
and a circuit that receives the detection signals output from each of the sensors and drives the liquid crystal panel, and the detection signal of the first sensor is output to the circuit that drives the liquid crystal panel. Since a bistable multivibrator so-called flip-flop circuit is incorporated, which has two stable states: a state in which the detection signal from the second sensor is output, and a state in which the detection signal from the second sensor is output. The liquid crystal panel can be controlled to be transparent or opaque.

<Embodiment> FIGS. 1 and 2 are perspective views of an embodiment of the present invention, showing a state in which the front door is closed and a state in which it is opened, respectively. Embodiments of the present invention will be described in detail below based on these drawings.

The front side of the main body 21 of the box-shaped stand is normally closed by a door 7. An input port 1 into which delivered items are placed is provided above the front surface of the door 7, and the input port 1 is provided with an opening/closing lid. Further, on the front side of the door 7, the delivery receiving box is provided with a liquid crystal panel 6, which is a window through which the inside of the box can be seen. Along the upper edge of the input slot 1 inside the door 7, there is provided a loading detection microswitch 3 that detects when the opening/closing lid of the input slot 1 is opened. When the opening/closing lid of the mouth 1 is opened, a detection signal thereof is output. In addition, since the delivered goods are taken out from the takeout port 2 by opening the door 7, a door opening/closing area short circuit micro switch 4 is provided at the lower end of the inside of the door 7 to detect when the door is opened. The sensing microswitch 4 outputs a detection signal when the door 7 is opened. The signals detected by the closing detection microswitch 3 and the door opening/closing detection microswitch 4 are input to the liquid crystal panel drive circuit 5, and the liquid crystal panel drive circuit 5 controls the liquid crystal panel 6 to be transparent or opaque. It will be done.

FIG. 3 is a conceptual diagram of a liquid crystal panel drive circuit.

Next, the above-mentioned liquid crystal panel drive circuit will be explained in detail based on FIG. 3.

That is, the operation of making the liquid crystal panel 6 transparent or opaque is performed by the relay 9. The relay 9 is actuated by a signal outputted from a flip-flop circuit 8 which receives the detection signals outputted from the above-mentioned closing sensing microswitch 3 and door opening/closing sensing microswitch 4. This flip-flop circuit 8 is a memory circuit that has two stable points, and which stable point is determined depending on the content of the input signal, and has one or more inputs and two outputs. The flip-flop circuit 8 used here is R-
S flip-flop circuit 8, i.e. 5 (Set), R
It has two input terminals (Reset), and the output state is determined depending on the combination of these two inputs, and one output is used as the input to the relay 9.

FIG. 4 is a diagram showing a circuit and a block diagram of an embodiment of the present invention.

The power supply circuit 20 is for obtaining DC power from a commercial AC power supply. First, an AC power source is obtained by connecting the power plug 10 to a commercial AC power source (not shown). Next, the voltage supplied by the transformer 11 is reduced in pressure.

Furthermore, rectification is performed by a single-phase full-wave rectifier circuit 12 in which four rectifying elements are connected in a bridge shape. Next, a smoothing circuit in which a capacitor 13 is inserted in parallel after the single-phase full-wave rectifier circuit 12 flattens the waveform of the pulsating flow after being rectified by the rectifier. Further, the constant voltage circuit 14 stabilizes the DC power supply.

As described above, the necessary DC power can be obtained by the power supply circuit 20, and the liquid crystal panel drive circuit described below is driven by the power source.

The micro switch 3 for detecting insertion, which becomes conductive when a delivery item is thrown in, and the micro switch 4, for detecting door opening/closing, which becomes conductive when the door 7 is opened, are connected to a set terminal S and a reset terminal R, respectively, which are input terminals of a flip-flop circuit. It is connected.

When a delivery item is inputted through the input port 1, the input sensing microswitch 3 is turned on, and when the door 7 is opened, the door opening/closing sensing microswitch 4 is turned on. A time chart showing the input and output of the flip-flop circuit is shown in FIG. When a delivery item is put in, the set input and output Q go to H level, and when the delivery item is taken out, the reset input and output Q go to L level. Relay 9 operates depending on the state of output Q. That is, when the output Q is at L level, the relay 9 is turned off, so no voltage is applied to the liquid crystal panel 6, and the liquid crystal panel 6 becomes transparent. Furthermore, when the output Q is at H level, the relay 9 is turned on, so a voltage is applied to the liquid crystal panel 6, and the liquid crystal panel 6 becomes opaque. In the embodiment of the present invention, the relay 9 is used as a contact point, and the drive type a of the liquid crystal panel 6 is
15 can use an AC power source.

In this embodiment, when the opening/closing lid of the input port 1 is opened, the liquid crystal panel 6 becomes opaque, and the door 7 of the output port 2 becomes opaque.
Although the circuit is configured so that the liquid crystal panel 6 is in a transparent state when it is opened, these two states can be arbitrarily selected, and the selection contrary to the present invention may be made. That is, it can be selected as appropriate depending on the purpose.

In addition to the ones used in the embodiments of the present invention, the microswitch 3 for detecting insertion and the microswitch 4 for detecting door opening/closing may be any arbitrary one, such as an infrared sensor that detects when the object passes through or a sensor that detects a change in weight due to insertion. A non-contact switch may also be used.

<Effects of the Invention> As described above, in the delivery receiving box of the present invention, when a delivery is placed, the liquid crystal panel is in an opaque state, while the door for taking out the delivery is open. (As a result, the liquid crystal panel changes to a transparent state, so the presence or absence of a delivery can be easily seen even from a distance, and privacy is not compromised.

In addition to the above-mentioned effects in the normal usage method, if you want to see through the state in which the delivered items are being loaded, you can select the two states of the liquid crystal panel as appropriate depending on the purpose by reversing the selection of the two states from the example. The scope of its application can also be expanded.

[Brief explanation of drawings]

Figures 1 and 2 are perspective views of an embodiment of the present invention, Figure 3 is a conceptual diagram of a liquid crystal panel drive circuit of an embodiment of the present invention, and Figure 4 is a circuit and block diagram of an embodiment of the present invention. Figure, 5th
The figure is a time chart showing the input and output of the flip-flop circuit according to the embodiment of the present invention. 1... Input port 2... Output port 3... Micro switch for input detection 4... Micro switch for door opening/closing detection 5... Liquid crystal panel drive circuit 6... Liquid crystal panel 7... Door 8...Flip-flop circuit 9...Relay 21...Main body Patent applicant Representative of Sekisui Chemical Co., Ltd.
Hiro 1) Kaoru

Claims (1)

[Claims] A liquid crystal panel provided on the front of the delivery receiving box that is provided with an input port for delivery and an outlet for taking out the delivery, and that can select between two states, a transparent state and an opaque state. , a first sensor that detects that the delivery item has been inputted from the input port, a second sensor that detects that the delivery port has opened, and detection signals output by the respective sensors. and a drive circuit that drives the liquid crystal panel by inputting the following:
The state in which the detection signal of the first sensor is output and the state in which the detection signal of the first sensor is output, and
It has a bistable memory element that stores the state in which the detection signal of the sensor is output, and is configured to control the liquid crystal panel to one of the two states according to the state. A delivery receiving box.