JPH0238331Y2 - - Google Patents

Description

[Detailed description of the invention] (Technical field) This invention is a reflective lamp for warning lights that focuses the light emitted from rotating lights, flashlights, etc. that emit flash signals as warning signals in one direction, and emits a powerful reflected light. It's about mirrors.

(Prior art) The structure of a conventional warning light reflector consists of a reflector base with a light bulb insertion hole in the center for inserting a light bulb, and a reflector that has a paraboloid shape with the light source of the light bulb at its center. It is formed by integrally forming the
There are single-sided reflectors with one reflective part on one side and double-sided reflectors with two reflective parts.The reflective surfaces of each reflective part have improved reflectance and are made more powerful because of the need to reflect and project the warning light. Since the projector was intended to project light by reflection, many of the reflecting parts of the reflector were vacuum-deposited with aluminum.

However, depending on how the warning light is used, strong reflected light may not be necessary or weak reflected light may be desired. For example, in so-called diffused warning lights mounted on the roof of an emergency vehicle, the minimum amount of rotational release is required in all directions, such as in residential areas late at night or when stopped after arriving at the scene of an accident. This is the case when light is sufficient. Here, in the past, the voltage of the rotating light was lowered to reduce the luminous intensity, and as shown in Figure 3, the reflective mirror for the warning light was shaped like a disc with a light bulb insertion hole A41 in the center. Reflection parts A31 and A32, each of which has a paraboloid shape centered on the light source and whose reflective surfaces are finished by aluminum vacuum evaporation treatment, are aligned and connected front and rear on the same light projection axis on the reflection mirror table part A4. In addition to configuring
Filter A is installed on one reflective surface to reduce reflectance.
33, or by installing separate parts, etc., to partially block light, and by providing a rotating stop function and a flashing function to the diffused warning light, and by interlocking them, the rotational light emission in the desired direction was reduced. .

(Problem to be solved by the invention) However, reducing the rotational flash with the above-mentioned conventional configuration requires an increase in the number of parts and circuits, and also because the light-shielding parts always prevent rotational light from being emitted in the light-shielding direction. Warning may not be sufficient, and for safety reasons,
A solution was desired.

(Purpose of the invention) This invention was devised in view of the above-mentioned problem, and is configured by reducing the reflectance of one side of the double-sided reflective mirror, and has a rotation stop function and flashing function of a diffused warning light. When used together, it provides a simple and reliable means for reducing light in a predetermined direction.

(Means for solving the problem) To this end, the warning light reflector is constructed by having reflecting parts exhibiting a parabolic surface centered on the light source colliding and connecting at the front and rear sides on the same projection axis, and extending downward in a substantially circular shape. It is constructed by integrally forming a plate-shaped reflecting mirror base, and drilling a light bulb insertion hole into the center of the lower surface for inserting a light bulb and a socket.

(Function) Since it has the above configuration, when the warning light reflector of the present invention is used, a powerful flash of light is emitted in one direction with a composite light of the light bulb light and the light reflected by the reflection part of the reflector, and in the other direction. In this method, a gentle flash of light is projected using a combination of light from a light bulb and light reflected by a reflecting portion of a reflector with reduced reflectance. Further, since the reflecting portion of the warning light reflector is directly processed, it is possible to freely reduce the reflectance as required.

(Example) Hereinafter, an example of this invention will be described with reference to the drawings.

Fig. 1 is a perspective view of a warning light reflector which is an embodiment of this invention, and Fig. 2 is a circuit configuration of one usage mode in which the warning light reflector of this invention is used in a diffused warning light. It is a diagram. Each part of the warning light reflector will be explained based on FIG. 1, and the mode of use will be explained based on FIG.

1 is a light bulb that is a light source of a rotating light. In practice, incandescent light bulbs and halogen light bulbs are often used.

2 is a warning light reflector according to this invention,
It is constructed by combining the following parts.

Reference numeral 3 denotes a reflector that focuses the bulb light in one direction and strongly reflects and projects the light. Reflection parts 31 and 32 each having a paraboloid surface centered around the light emitting part of the light bulb 1 are aligned and connected in the front and rear directions on the same light projection axis, and are the effective reflection parts of a so-called double-sided reflector. . One of the reflecting portions 31 has its reflecting surface finished by aluminum vacuum evaporation treatment to maintain the highest light reflectance. Of course, other surface treatments that maintain good reflectance may be performed. The other reflective section 32
The light reflectance of the reflecting surface is set lower than that of the reflecting section 31. In the present invention, the reflective surface is subjected to aluminum vacuum deposition treatment, and the reflectance is reduced by subsequent surface treatment. As another means,
It is only necessary to reduce the reflected light in the irradiation direction by surface treatment by sandblasting or by changing the reflective curved surface.

Reference numeral 4 denotes a reflecting mirror table portion that supports the reflecting portions 31 and 32, and has a disc shape with an inner cutout.
A light bulb insertion hole 41 is formed in the center portion for inserting the light bulb 1, and the reflector table receives rotational driving force from the motor 5 on the outside or inside of the periphery of the reflecting mirror base to rotate.

The reflective mirror for a warning light of the present invention is composed of the above-described parts, and is characterized by the difference in reflectance between the reflective part 31 and the reflective part 32. It is more effective to set the reflectance of the reflecting section 32 to 70% or less of that of the reflecting section 31.

Next, an example of the usage in which it is incorporated into a diffused warning light will be described with reference to FIG. 2.

A rotational position detection circuit 11 that detects the rotational position of the warning light reflector 2 with the sensor 6 and emits a signal according to the detected position, a motor drive circuit 12 that controls the rotation of the motor 5, and is linked to the rotational position detection. The warning light reflector 2 according to the present invention is used in conjunction with the motor 5 in a diffused warning light comprising a control circuit A including a signal discrimination circuit 13 for starting and ending the flashing circuit 14. . During normal emergency driving of vehicles equipped with this system, a rotating warning light is emitted as a warning light.
When a vehicle is stopped or when dimming is required, such as in a residential area late at night, the revolving light is stopped and the diffused warning light flashes light forward and backward. At this time, if the reflective section 32 is set at the rear, the vehicle behind will not be dazzled.

In addition, it can also be used for rotating lights other than diffused warning lights, advertising flashing lights, rotating lights, etc., and can easily be dimmed in a specific direction, and can be used for other signals with the same technical concept. Of course, it can also be used for display devices.

(Effects) Since the present invention is configured as described above, even when strong flashing light is not required to operate the rotating flashing light and rotating stop flashing light of the conventional diffused type warning light, it is possible to This provides a means for reducing light in a predetermined direction without providing separate parts such as a voltage drop device or a light shielding filter. In addition, by processing the reflective part to reduce the reflectance, the irradiation range of the warning flash is widened, and the strength of the warning flash can be varied, improving visibility, making it suitable not only for use in emergency vehicles but also for advertising. It is very effective even when used.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a warning light reflector which is an embodiment of this invention, and Fig. 2 is a circuit configuration of one usage mode in which the warning light reflector of this invention is used in a diffused warning light. It is a diagram. FIG. 3 is a perspective view of a conventional warning light reflector. 1...Light bulb, 2...Reflector for warning light, 31...
Reflection part, 32...Reflection part, 4...Reflector stand part, 5
... Motor, 6 ... Sensor, 11 ... Rotation position detection circuit, 12 ... Motor drive circuit, 13 ... Signal discrimination circuit, 14 ... Blinking circuit, A1 ... Light bulb, A
2...Reflector for warning light, A31...Reflector, A3
2...Reflector, A33...Filter, A4...
Reflector base.

Claims (1)

[Scope of utility model registration request] A double-sided reflector that is equipped with reflective parts each having a parabolic surface centered on a light source at the front and rear sides on the same projection axis, one of which is set to have a lower light reflectance than the other reflective part. A warning light reflector characterized by: