JPH0159636B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotary indicator lamp that utilizes a plurality of light emitting diodes.

As a rotary indicator light, one shown in FIG. 1 has conventionally been used. This involves attaching a glass-shielded beam-shaped light bulb 2 to a mounting base 1 facing downward, and attaching a rotating reflector 3 with an inverted V-shaped cross section to the top of the mounting base 1 inside the mounting base 1. The upper part of the mounting base 1 is covered with a colored transparent filter case 5. The rotary indicator light with this structure reflects the light from the light bulb 2 in the horizontal direction by the rotating reflector 3 rotated by the motor 4, thereby making it appear as if the light source is blinking or rotating. It gives an effect that looks like this.

However, since this conventional rotary indicator light uses a motor 4, it is heavy and inconvenient to handle, and since it uses a light bulb 2, its lifespan is short and power consumption is low. There were many problems.

An object of the present invention is to provide a rotary indicator lamp that uses a plurality of light emitting diodes, has a long life, is lightweight, and has low power consumption.

The present invention will be explained below with reference to Examples. FIG. 2 is a perspective view of the rotating indicator light, in which a drive circuit 7 is housed in the mount 6, and a display section 8 driven by the drive circuit 7 is mounted on the top of the mount 6. The entire display section 8 is covered with a colored (red, etc.) transparent filter case 9.

The display unit 8 includes a rod-shaped light source 81 as shown in FIG.
A plurality of these are combined radially at equal angular intervals in a 360-degree horizontal direction, thereby forming a cylindrical shape as a whole. FIG. 4 is a plan view of a total of 18 rod-shaped light sources 81 (A to R) combined. The rod-shaped light source 81 has a lamp house 81a which is an elongated box whose front side is open or transparent and whose other side is light-shielding.
A total of six light emitting diodes 81c are attached to the substrate 81b in the lamp house 81a in a row, and a parabolic reflector 81d is provided corresponding to each light emitting diode 81c. 81c is connected in series with the two lead wires 81e together with a current limiting resistor. The display unit 8 is configured as described above,
Each rod-shaped light source 81 is independently driven to turn on by the drive circuit 7 as the smallest unit light source.

FIG. 5 is a circuit diagram of the drive circuit 7. This drive circuit 7 includes an oscillator 71, a day counter 72 as a type of ring counter which sequentially outputs pulse signals by receiving a clock (period T ₀ =27.7 ms) from the oscillator 71, A diode matrix 73 as a type of selection circuit that receives the output of 72, and a type of switching element group that receives the output of the diode matrix 73 and lights up the light emitting diode 81c of each bar-shaped light source 81 of the display section 8. It is composed of a transistor group 74. This transistor group 74 consists of nine transistors _Q1 to _Q9 , and in FIG.
It is designed to give an output to each pair. On the other hand, the diode matrix 73 has a diode _D1 between the "0" output line of the decade counter 72 and the base line of the transistor _Q1 .
Further, a diode D ₂ is connected between the "1" output line and the base line of the transistor Q ₂ , and diodes D ₃ to _{D 9} are connected in the same manner.
r ₁ is a pull-down resistor, r ₂ is a protection resistor, and r ₃ is a current-limiting resistor.

Next, the operation of the rotary indicator lamp according to the present invention will be explained. The oscillator 71 outputs a clock as shown in FIG.
Each output line of the counter 72 has a sequential pulse width.
A positive pulse of T ₀ appears as shown in FIG. 6b.
Therefore, for example, day counter 72
When a positive pulse occurs on the “ _{0 ”} output line of
A current flows through the pair A and J in 1 for a time T ₀ ,
The light emitting diode 81c there lights up. The lighting state at this time is as shown in FIG. Then, when the positive pulse on the "0" output line of the decade counter 72 disappears and a positive pulse is generated on the " ₁ " output line, the transistor _Q2 is turned on by the diode D1. The pair B and K of the bar-shaped light sources 81 are lit. Therefore, the illuminated parts shift from the set A and J to the set B and K, producing the effect that the light source rotates in the direction of the arrow in FIG. Thereafter, each time the clock is output from the oscillator 71, the illuminated part changes, and if this state continues, the light source will appear to be rotating continuously. In this case, the lighting cycle of each rod-shaped light source 81 is T ₀ ×18/2
=9T ₀ (approximately 250ms).

FIG. 8 is a diagram showing another embodiment of the diode matrix 73 in FIG. 5, in which three diodes are connected to each output line of the decade counter 72. That is, diodes D ₀₁ , D ₀₂ , D 03 are connected between the "0" output line of the decade counter 72 and the base lines of transistors Q ₁ , Q ₈ , and Q ₉ , and between the "1" output line and the transistors Q 1 , Q ₈ , and Q 9 . There are diodes D ₁₁ , D ₁₂ , D ₁₃ between the base lines of _{Q 1} , Q 2 , and Q ₉ , and between the “2” output line and the base lines of transistors Q ₁ , Q ₂ , and Q ₃ . Between each diode D ₂₁ , D ₂₂ ,
Similarly, D ₂₃ is a diode D ₃₁ ~ _{D 33} , D ₄₁ ~
_D43 , _D51 ~ _D53 , _D61 ~ _D63 , _D71 ~ _D73 , _D81 ~ _D83
are connected to each other.

By using the diode matrix shown in FIG. 8, the clock shown in FIG.
1, and thereby each output appears from the decade counter 72 at the timing shown in FIG. 9b, each bar-shaped light source is lit for a time _3T0 at the timing shown in FIG. 9c. That is, for example, when a positive pulse occurs on the "0" output line of the decade counter 72, the diode
Transistors Q ₁ , Q ₈ , Q ₉ by D ₀₁ , D ₀₂ , D ₀₃
conducts, and as a result, the sets A and J, the sets H and Q, and the sets I and R of the rod-shaped light sources 81 are lit. The lighting state at this time is as shown in FIG. Then, when the positive pulse on the "0" output line of the decade counter 72 disappears and a positive pulse is generated on the "1" output line, this time the diode
Transistors Q ₁ , Q ₂ , Q ₉ by D ₁₁ , D ₁₂ , D ₁₃
conducts, and the sets A and J, the sets B and K, and the sets I and R of the rod-shaped light sources 81 light up. In this case, as a result, the above-mentioned set of H and Q is turned off and the set of B and K is newly lit. Therefore, an effect is produced in which the three adjacent bar-shaped light sources are moved in the direction of the arrow in FIG. 10 by the width of one bar-shaped light source. So, Daycade Counter 7
Each time a positive pulse is generated in each output line of 2, the light source moves in the direction of the arrow, and if this state continues, it will appear as if a light source three times the width of one rod-shaped light source 81 is continuously rotating. Become.

FIG. 11 is a diagram showing yet another embodiment of the diode matrix in FIG.
The connection positions of the diodes are changed.
That is, a diode D' ₀ is connected between the "0" output line of the decade counter 72 and the base line of transistor Q ₉ , and a diode D' ₁ is connected between the "1" output line and the base line of transistor Q ₈ . However, there is also a diode D′ ₂ between the “2” output line and the base line of transistor Q ₇ .
Diodes D' ₃ to D' ₈ are similarly connected below.

If the diode matrix shown in FIG. 11 is used, the clock shown in FIG. 12a will be output from the oscillator 71, and each output will appear from the decade counter 72 at the timing shown in FIG. 12b. Then, each bar-shaped light source is
Lights up at the timing shown in . That is, for example, when a positive pulse occurs on the "0" output line of the decade counter 72, the transistor _Q9 is made conductive by the diode D' ₀ , and as a result, the set of I and R in the rod-shaped light source 81 is turned on. Light. The lighting state at this time is as shown in FIG. and,
Next, when the positive pulse on the "0" output line of the decade counter 72 disappears and a positive pulse is generated on the "1" output line, the transistor Q ₈ is made conductive by the diode D' ₁ , and the bar-shaped The set of H and Q among the light sources lights up. Therefore, the illuminated parts move from the set I and R to the set H and Q, producing the effect that the light source rotates in the direction of the arrow in FIG. This direction of rotation is opposite to that shown in FIG. In this way, by changing the diode matrix 73 in FIG. 5 to the diode matrix shown in FIG. 11, the direction of movement of the light sources that turn on sequentially will be reversed, making it appear as if the light sources are rotating in the opposite direction. become.

FIG. 14 is an overall circuit diagram in which the diode matrix shown in FIG. 8 is realized by an OR gate circuit 73'. In this circuit, the "0" output line of the decade counter 72 goes to the OR gates _G1 , _G2 , _G3 , and the "1" output line goes to the OR gates.
“2” output line is OR gate for G ₂ , G ₃ , G ₄
G ₃ , G ₄ , G ₅ are connected in the same way, and each output of these OR gates G ₁ to _{G 9} is connected to transistors Q ₁ to _{Q 9}
are connected to the base of each. The circuit shown in Fig. 14 operates in exactly the same way as when the circuit shown in Fig. 8 is incorporated into the circuit shown in Fig. 5. Three adjacent bar-shaped light sources are used as unit light sources, and only the width of one bar-shaped light source is used. The lighted part shifts. In addition, even in a circuit using this OR gate, lighting and rotation can be arbitrarily set by changing the connection position, as in the case of a diode matrix.

From the above, according to the present invention, a rod-shaped light source in which light emitting diodes are arranged in a row is used as the minimum unit light source,
Since it can be turned on or off, it consumes less power than a lamp and has a much longer lifespan. In addition, since the adjacent bar-shaped light sources are turned on and off sequentially in one direction, the effect of rotating the bar-shaped light sources can be achieved, thereby eliminating the need for a special motor and making the whole lighter. This makes it easier to use the same technology, and consumes less power. Furthermore, since power consumption can be reduced in this way, dry batteries can be used as a power source, making it possible to realize a device that is convenient to carry. It also has no mechanically moving parts and no filament, making it structurally robust. In addition, since the overall shape is cylindrical, light can be delivered in all directions, and the lamp house has multiple rod-shaped light sources made of multiple light emitting diodes arranged vertically in a row, so it is cylindrical. Since the rod-shaped light source is constructed as one unit, there are fewer inspection points in the event of a failure, and parts can be easily replaced, making inspection and repair easy. moreover,
Since the entire device is composed of electronic circuits, the lighting cycle,
It is easy to set and change the number of bar-shaped light sources, lighting order, size of unit light sources, etc., and has excellent versatility. From the above, it is extremely suitable as a rotary indicator light for use on roads, on vehicles, on aircraft, and on ships.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a conventional rotary indicator light. Second
The figure is a perspective view of a rotary indicator light according to an embodiment of the present invention. FIG. 3 is a perspective view of the rod-shaped light source of this embodiment. FIG. 4 is a plan view of the display section of the rotary indicator light in FIG. 2. FIG. 5 is a circuit diagram of the drive circuit. Figure 6a
~c is a timing chart of the operation of the circuit of FIG. FIG. 7 is an explanatory diagram of rotational display of a rotary indicator lamp using the circuit of FIG. 5. FIG. 8 is a circuit diagram of another embodiment of the diode matrix in FIG. 5; 9a to 9c are timing charts of the operation when the circuit of FIG. 8 is used. Figure 10 shows
FIG. 9 is an explanatory diagram of rotational display of a rotary indicator lamp using the circuit of FIG. 8; Figure 11 shows the diode in Figure 5.
FIG. 3 is a circuit diagram of another embodiment of the matrix. Figure 12 a~
c is a timing chart of the operation when the circuit of FIG. 11 is used. FIG. 13 is an explanatory diagram of rotational display of a rotary indicator lamp using the circuit of FIG. 11. 1st
FIG. 4 is a circuit diagram of still another embodiment of a drive circuit in which the function of the circuit shown in FIG. 8 is realized by an OR gate. 6... Mounting base; 7... Drive circuit; 8... Display section; 9... Filter case; 71... Oscillator;
72...Decade counter; 73...Diode matrix; 73'...OR gate circuit; 74...Transistor group; 81...Bar-shaped light source; 81c...Light emitting diode.

Claims (1)

[Claims] 1. A rod-shaped lamp consisting of a plurality of light emitting diodes arranged vertically in a line on a substrate placed in a lamp house with an open or transparent front, and a reflecting section provided corresponding to each of the plurality of light emitting diodes. a plurality of switching elements for driving the rod-shaped light sources; a selection circuit for selecting the plurality of switching elements; and a selection circuit for selecting the plurality of switching elements; 1. A rotary indicator lamp comprising: a drive circuit including a ring counter for operating a ring counter; and the drive circuit sequentially turns on and off each of the rod-shaped light sources independently in one direction.