JPH0123180Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a light-emitting magnetic reversal plate display element in a light-emitting display device used for road signs, stadiums, etc.

Conventionally, there are two types of display elements of the above type: magnetic reversal plate type and electric light type.The former magnetic reversal plate type displays clearly under sunlight, but cannot be recognized at night without external light, and the latter type displays clearly in sunlight. The electric light type displays clearly at night, but cannot be recognized during the day, especially when exposed to direct sunlight, and to date there is no light-emitting display element that can display both day and night.

In contrast, the present invention attempts to provide a light-emitting magnetic reversal plate display element for a light-emitting display device capable of day and night light-emitting display. A light source installed in the center of a shaped case, a reversing plate rotatably placed on the outside of the light source, the surface of which is coated with luminescent paint and whose back side is black, and a reversing plate provided in an opening formed above the case. a transparent cover that covers the reversing plate; a movable plate pivotally attached to the front wall surface of the case, the bottom of which is provided with an upper permanent magnet and a lower permanent magnet facing each other; and a center of the movement range of both the permanent magnets. a fixed electromagnet fixed to the front side wall of the case so as to be located at the front side wall of the case, and electrically connected to a sensor for amplifying the light receiving current and a control signal unit for blinking the light source and operating the reversing plate. One of the control signal switching parts that operates in response to the brightness and darkness of the outside light during the day and night is electrically connected to the fixed electromagnet through an electromagnet terminal attached to the bottom of the case, and the other is electrically connected to the fixed electromagnet. It exists in that it is electrically connected to the light source via the light source terminal attached to the bottom, and thus,
According to the present invention, it is convenient because it can be applied to road traffic information display devices, display systems for various competitions, outdoor digital watches, etc., so that luminescent display can be performed regardless of day or night.

Next, the present invention will be explained in more detail with reference to an embodiment shown in FIGS. 1 to 5.

In FIGS. 1 and 6, 1 is a cubic-shaped plastic case with a black inner surface, 2 is a light source such as a light bulb or discharge tube (hereinafter simply referred to as a light bulb), and 3 is a phototransistor 27.
4 is a control signal switching unit (day/night discrimination relay unit) consisting of a relay Ry ₁ of a light bulb 2 and a relay Ry ₂ of a fixed electromagnet 16, which operate in response to day and night external light; 5 is a relay Ry ₃ for blinking the light bulb 2 and its power supply (AC-100V) and a switching relay Ry ₄ for the reversing plate 7 and its power supply (DC-100V).
6V) (display signal relay section and power supply section for the light bulb 2 and reversing plate 7, respectively), the light bulb 2 is attached to the center bottom of the case via the socket 6. A dome-shaped reversing plate 7 made of aluminum or plastic is rotatably arranged on the outside of the light bulb, and in this case, the surface of the reversing plate 7 is covered with light A color display such as optical paint is applied, for example, yellow, and the back side is painted black, and as shown in Figures 2 and 3, a rotating arm 8,
9 are installed facing each other, one end of these rotating arms is fixed to the reversing plate, and the other end is pivotally connected to the front and back walls of the case 1 with mounting screws 10 and 11. There is. Upper permanent magnet 12 on the bottom
A roughly triangular movable plate 14 on which a lower permanent magnet 13 (S-N) and a lower permanent magnet 13 (S-N) are mounted facing each other is pivoted to the front wall of the case 1 with screws 15, and Similarly, a fixed electromagnet 16 is fixedly installed on the wall so as to be located at the center of the moving range of both the permanent magnets, as shown in FIG. The lower end is pivotally connected by a curved lever 17.

Further, a coil 18 is wound around the fixed electromagnet 16 in two directions, and the exciting current is passed from the common terminal C of the electromagnet terminal 19 to the set terminal S direction, and further from the common terminal C to the reset terminal R direction, that is, in the forward and reverse directions. The lead wires 20, 21, and 22 of the electromagnet are connected to three terminals C, S, and R attached to the case 1, respectively, and the light source terminal 23 is connected to light bulb 2.

In addition, the center of the light bulb 2 formed above the case 1 (the mounting screws 10 and 11 of the rotating arms 8 and 9)
A dome-shaped transparent cover 25 is attached to the aperture 24 having an angle of 110° to the case. Since the dome-shaped reversing plate 7 protruding upward from the upper opening 24 of 1 is covered at the time of setting, it can be viewed up to an almost horizontal angle of about 170 degrees, and the main display As mentioned above, the external circuit of the element includes a sensor 3 that uses, for example, a phototransistor 27 to increase the light reception current, and an arbitrary standard value for the amount of light received, and when the illuminance is higher than the reference value, The control signal switching unit 4 sends an excitation current to the circuit of the reversing plate 7 (circuit of the fixed electromagnet 16) and sends a blinking signal current to the circuit of the light bulb 2 (light bulb circuit) when the current is below the reference value (in other words, the switching part 4 sends a blinking signal current to the circuit of the light bulb 2 (light bulb circuit). It is composed of a control signal switching section 4) that operates according to the brightness and darkness of external light, and a control signal section 5 that causes the light bulb 2 to blink and the reversing plate 7 to operate.

Thus, to explain the operating mode of the present display element having the above-mentioned configuration, the upper permanent magnet 12 and the lower permanent magnet 13 attached to the movable plate 14 are located at opposing positions such as N-S and S-N as shown in FIG.
, and rotates around the screw 15 in the direction of the counterclockwise or hourly hand.Now, a signal from the control signal section 5 causes a current to flow from the common terminal C to the set terminal S, causing the current in the fixed electromagnet 16 to change. When flowing in the direction of the solid line arrow, the magnetic poles of the electromagnet become N-S poles as shown by the solid line, so the upper permanent magnet 12 is attracted to the electromagnet and the lower permanent magnet 13 is repelled. Therefore, the movable plate 14 rotates in the counterclockwise direction around the screw 15, so that the reversing plate 7
A curved lever 1 pivotally connected to a pivot arm 8 of
7, the reversing plate is pulled and rotated from the reset position indicated by the two-dot chain line to the set position indicated by the solid line, and its yellow portion is displayed on the top surface of the case 1.

Furthermore, as shown in FIG. 7, the amount of light received by the phototransistor 27 is large during the daytime, so the output current of the sensor 3 becomes large, and the illuminance exceeds the standard value, that is, exceeds the relay operation setting value. When the excitation current flows, the light bulb relay Ry ₁ turns off and the light bulb 2 goes out, and at that time the contact of the electromagnet relay Ry ₂ moves, and the exciting current flows from the common terminal C to the set terminal S. Since the flow flows in the direction of the arrow shown in the figure, the reversing plate 7 moves to the transparent cover 25, changes from the reset state to the set state, and displays yellow.

Next, when a current flows from the common terminal C through the fixed electromagnet 16 to the reset terminal R in the direction of the dotted arrow, the polarity of the electromagnet becomes S-N pole, and the upper permanent magnet 12 and the fixed electromagnet 16 repel each other. Since the lower permanent magnet 13 is attracted to the fixed electromagnet, the movable plate 14 rotates in the direction of the hour hand around the screw 15, and the reversing plate 7, which is pivotally connected via the mounting arm 8 and the bending lever 17, rotates. , contrary to the above, the reversing plate rotates from the solid line position to the two-dot chain line position, and the excitation current flows from the common terminal C to the reset terminal R, so that the reversing plate maintains the reset position.

Furthermore, as shown in FIG. 8, the amount of light received by the phototransistor 27 is small at night, so the output current of the sensor 3 is small, and the illuminance is below the reference value, that is, at all times (the sensor 3 When the output current is small (0 to several mmA), the light bulb relay Ry ₁ turns on and the light bulb 2 lights up, and at that time the electromagnetic relay Ry ₂ 's contacts move in the opposite direction from the daytime,
Since the excitation current flows from the common terminal C to the reset terminal R in the direction of the arrow shown, the reversing plate 7 moves inside the case 1, changing from the set state to the reset state.

In addition, Fig. 4 A and B show the upper opening 24 of the case 1.
is circular, and the reversing plate 7 and the transparent cover 25 are dome-shaped. Figures 5A and 5B show the case where the reversing plate is dome-shaped, but it is flat plate-shaped so that it can be manufactured at low cost. As an example, the shape is round or square, and the front side is colored and the back side is displayed in black.Accordingly, the upper opening 24 is also round or square, and a transparent acrylic plate 28 is pasted on the back side. It's worn.

From what has been described above, the present invention has the following effects.

(1) Clear display can be obtained with a single display element both in direct sunlight and in the dark at night.

(2) Since there are separate displays for day and night, the daily usage time is doubled compared to the magnetic reversal plate type and the electric light type.

(3) The viewing angle can be a super angle of 110° (the reversal plate is flat) to 170° (the reversal plate is dome-shaped).

(4) Since the reversing plate is set and reset using a self-holding method in which magnetic reversal is performed using an extremely short pulse current, power consumption is low.

(5) An independent plastic package type that is highly waterproof and dustproof.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view of a luminescent magnetic reversal plate display element according to the present invention, FIG. 2 is a drawing showing the operational relationship between the reversing plate and the permanent magnet mounting movable plate as before, and FIG. 3 is a perspective view of the movable plate. 4A and 4B are schematic plan views and perspective views of the present display element, and FIGS. 5A and 5B are schematic vertical sectional views and perspective views showing other embodiments of the present invention,
FIG. 6 is a block diagram showing the external circuit of the luminescent magnetic reversal plate display element according to the present invention, FIG. 7 is a daytime operating circuit diagram, and FIG. 8 is a nighttime operating circuit diagram. Note that the correspondence relationship between the main parts shown and the symbols is as follows. 1...Plastic case, 2...Light source, 3
... Sensor, 7 ... Reversing plate, 8, 9 ... Rotating arm, 12, 13 ... Upper and lower permanent magnet, 1
4...Movable plate, 16...Fixed electromagnet, 17...Curved lever.

Claims (1)

[Claims for Utility Model Registration] (1) A light source installed in the center of a cubic-shaped plastic case with a black inner surface in a light-emitting display device that displays characters and signals by arranging a large number of display elements vertically and horizontally. a reversing plate whose surface is coated with luminescent paint and whose back surface is black and is rotatably disposed outside the light source; and a transparent cover provided in an opening formed above the case and covering the reversing plate. a movable plate pivotally attached to the front side wall surface of the case, the bottom of which is provided with an upper permanent magnet and a lower permanent magnet facing each other; It is equipped with a fixed electromagnet fixed to the side wall surface, and is electrically connected to a sensor that amplifies the light reception current and a control signal unit that blinks the light source and operates the reversal plate. One of the control signal switching units that operates in response to the above is electrically connected to the fixed electromagnet via the electromagnet terminal attached to the bottom of the case, and the other is connected to the light source terminal attached to the bottom of the case. A light-emitting magnetic reversal plate display element in a light-emitting display device, characterized in that the display element is electrically connected to the light source through a light-emitting display device. (2) A light-emitting magnetic reversal plate display element in a light-emitting display device according to claim 1, wherein the reversal plate is formed into a dome shape and protrudes from an upper opening of the case. (3) A light-emitting magnetic reversal plate display element in a light-emitting display device according to claim 1, wherein the reversal plate is formed into a flat plate shape and is positioned below the upper opening of the case.