JPH0159635B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an indicator light having a plurality of light emitting diodes provided on its surface.

As an indicator light, particularly a rotary indicator light, one shown in FIG. 1 has been conventionally used. This is a glass shielded beam type light bulb 2 against a mount 1.
At the same time, a rotating reflector 3 having an inverted V-shaped cross section is attached to the top of the mounting base 1 so as to be rotated by a motor 4 provided in the mounting base 1, and 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 causing the light source to blink or rotate. This gives the effect of giving the impression that there is a real person.

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 an indicator lamp that has a long life, is lightweight, consumes little power, and is suitable for a rotor by providing a plurality of light emitting diodes all around the surface.

The present invention will be explained below with reference to Examples. FIG. 2 is a perspective view of an embodiment as a rotary indicator light, in which a drive circuit 7 is housed in the mounting base 6, and the upper part of the mounting base 6 is driven to turn on by the drive circuit 7. A display section 8 is attached, and 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 combination of a total of 18 rod-shaped light sources 81 (A to R). and,
The rod-shaped light source 81 includes 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 81 are attached in a row to the substrate 81b inside the lamp house 81a.
c, and a reflecting plate 81d provided corresponding to each light emitting diode 81c, and each light emitting diode 81c is connected in series with a current limiting resistor to two lead wires 81e. The display unit 8 is configured as described above, and each bar-shaped light source 81
are independently driven to turn on by a drive circuit 7 as unit light sources.

FIG. 5 is a circuit diagram of the drive circuit 7. This drive circuit 7 includes an oscillator 71 and a daycade circuit as a ring counter that sequentially outputs pulse signals by receiving a clock from the oscillator 71.
counter 72 and its decade counter 72
a diode matrix 73 receiving the output of
Furthermore, it is constituted by a transistor group 74 that receives the output of the diode matrix 73 and lights up the light emitting diode 81c of each rod-shaped light source 81 of the display section 8. This transistor group 74 is made up of nine transistors Q ₁ to Q ₉ , each of which provides an output to a total of nine pairs, each consisting of two rod-shaped light sources facing each other at an angular interval of 180 degrees in FIG. It's getting old.

On the other hand, the diode matrix 73 includes a diode D ₀ between the "0" output line of the decade counter 72 and the base lines of the transistors Q ₁ , Q ₈ , and Q ₉ , and a diode D 0 between the "1" output line and the transistor Q A diode _D1 is connected between the base lines of transistors Q1, Q2, and _Q9 , and _a diode _D2 is connected between the "2" output line and the base lines of transistors _{Q1 , Q2} , and _Q3 . A diode D ₃ is connected between the “3” output line and each base line of transistors Q ₂ , Q ₃ , and Q ₄ , and between the “4” output line and each base line of transistors Q ₃ , Q ₄ , and Q _{5 .} There is a diode D ₄ between the "5" output line and the base line of each transistor Q ₄ , Q ₅ , Q ₆ , and a diode D ₅ between the "6" output line and the transistors Q ₅ , Q ₆ , A diode D ₆ is connected between each base line of Q ₇ , and a diode D 7 is connected between the "7" output line and each base line of transistors Q ₆ , Q ₇ , and Q 8 , and a diode D ₇ is connected between the "7" output line and each base line of transistors Q 6 , Q ₇ , and Q 8 . A diode D ₈ is connected between the base line of each of the transistors Q ₇ , Q ₈ , and Q ₉ . others,
r ₁ is a current limiting resistor and r ₂ is a pull-down resistor.

Next, the operation of the indicator lamp according to the present invention will be explained.
The oscillator 71 outputs a clock as shown in FIG. 6a, and in synchronization with this, positive pulses are sequentially output on each output line of the decade counter 72 as shown in FIG. 6b. Therefore, for example, when a positive pulse occurs on the "0" output line of decade counter 72, transistors Q ₁ , Q ₈ , and Q ₉ are simultaneously conducted by diode D ₀ , resulting in the result shown in FIG. 6c. As shown, A of the rod-shaped light sources 81
and J set, H and Q set, and I and R set are lit.
This situation is shown in Figure 7a. 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 D ₁ causes
Transistors Q ₁ , Q ₂ , and Q ₉ conduct at the same time, and the sets of A and J, the sets of B and K, and I and R of the rod-shaped light source 81 are turned on.
The group lights up. This situation is shown in Figure 7b. 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, the effect is that the light source moves in the direction of the arrow. Thereafter, each time a positive pulse is generated in each output line of the decade counter 72, the light source moves further in the direction of the arrow, and if this state continues, the light source will appear to be rotating continuously.

As described above, in the circuit shown in FIG. 5, three sets of bar-shaped light sources are turned on at the same time by one output line of the decade counter 72, so the light sources in three horizontal rows of bar-shaped light sources rotate. However, if you increase the number of sets that are lit at the same time, you will have the effect of a wider, larger light source rotating, and conversely, if you only light one set at the same time, the smallest light source with the smallest width will rotate. give effect. In the above embodiment, 18 rod-shaped light sources were arranged to form the entire display section into a cylindrical shape, but the number can be set arbitrarily.

As described above, according to the present invention, since the bar-shaped light source in which light emitting diodes are arranged in a row is turned on and off, the power consumption is small compared to a lamp, and the life span is very long. In addition, since it is possible to turn on and turn off adjacent bar-shaped light sources one after another, it is possible to achieve the effect of rotating light sources, and in this case, a motor is not required and the overall weight is reduced. It is possible to achieve further reductions in energy consumption and power consumption. Furthermore, by reducing power consumption, it becomes possible to use dry batteries as a power source, making it convenient to carry. Furthermore, it is structurally robust because it eliminates mechanically moving parts and does not require a filament. In addition, since the overall shape is cylindrical, light can be delivered in all directions, and a plurality of bar-shaped light sources made of a plurality of light emitting diodes arranged in a row are arranged horizontally in a long and narrow box-shaped lamp house. 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. be. As described above, the indicator light of the present invention is extremely suitable as an indicator light for roads, vehicles, aircraft, ships, etc.

[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. FIG. 6 is a timing chart of the circuit shown in FIG. 7th
The figure is an explanatory diagram of rotation display of a rotation indicator light. 6... Mounting base; 7... Drive circuit; 8... Display section; 9... Filter case; 81... Bar-shaped light source; 81c... Light emitting diode.

Claims (1)

[Claims] 1 A lamp house consisting of a vertically slender box with an open or transparent front and a light shielding side, a plurality of light emitting diodes arranged in a line on a substrate within the lamp house, and a lamp house corresponding to each of the plurality of light emitting diodes. What is claimed is: 1. An indicator light comprising: a rod-shaped light source configured with a reflecting portion provided as a cylindrical light source, and a plurality of the rod-shaped light sources are arranged side by side to form a cylindrical overall shape.