JP3020948U - Light emitting diode lamps suitable for navigation signs - Google Patents

Abstract

(57) [Summary] [Object] To provide a lamp using a light emitting diode as a light source and capable of obtaining a required light power and a light divergence angle so as to be particularly suitable for a traffic sign. [Composition] The light from the light emitting diode groups 5 and 6 is reflected by the rotating parabolic reflectors 1 and 2 and the extension portions 3 and 4 at the upper and lower bottom portions, and the light is emitted from the rotating parabolic reflectors with a constant divergence angle to the surroundings. The light emitting diode is arranged so as to emit light. In addition, the unit lamps may be connected to each other at upper and lower bottoms to form a stack, if necessary.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a lighting device using a light emitting diode as a light source, which is suitable as a traffic sign.

[0002]

[Prior art]

 Conventionally, as a lamp of this type, there is one as shown in FIG. In other words, it is composed of a rotating parabolic reflector 7 in a zigzag shape and a group of light emitting diodes 8 arranged circumferentially.

[0003]

[Problems to be solved by the device]

 In the conventional technology, since the light emitting diodes are installed almost on the focal point, the number is naturally limited, so that it is difficult to obtain high light power as a lamp. In addition, since the light emitting diode has a narrow emission angle, the light divergence angle of a lamp using a reflector is also narrow, and there is a problem in installing this kind of lamp on, for example, a violent buoy. It was

The present invention has been made in response to such problems of the conventional technology, and an object thereof is a lamp in which the light power and the emission diffusion angle of the lamp are sufficiently increased. It is intended to provide a container.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, in the lighting device of the present invention, in order to increase the divergence angle, the following measures are taken to cope with this. It is intended to increase both the light power and the divergence angle.

As shown in FIG. 2 as an example, the unit lamp unit is provided with the rotary parabolic reflector as shown at the respective reflection side positions 4 and 3 as shown in FIGS. A light emitting diode is attached at the focal position, but multiple concentric circles are arranged at the focal position.

[0007]

[Action]

 In the lighting device configured as described above, the light source located at the focal point can be arranged so as to extend across the light source. It is reflected at an angle corresponding to the expected angle.

Further, by constructing the unit lamp unit as a stack, the total luminous intensity is the sum of the light powers of the lamp units. The number of stacks is determined according to the required light power.

[0009]

【Example】

 Examples will be described with reference to the drawings. In FIG. 1, reference numerals 1 and 2 are rotary paraboloids whose cutting lines with respect to the vertical cutting plane are a part of a parabola, and their focal points are 4 points for the rotating paraboloid 1 and 2 for the same. So that it is 5. Both paraboloids of revolution are constructed in a one-to-one correspondence with each other. In this parabolic body, the surface requiring reflection is made smooth by metal deposition, plating, etc. to improve the reflectance.

Light-emitting diodes 5 and 6 as light-emitting bodies are arranged on the extension parts 3 and 4 on the upper and lower bases of the paraboloids 1 and 2, respectively. This position causes the focus of the paraboloid of revolution to be centered as described above. The light emitting diodes 5 and 6 are arranged so that the respective light emission centerlines face the corresponding paraboloids of revolution. Generally, as described above, it is desirable to dispose the light beams on multiple concentric circles with respect to the concentric circles focused so that the divergence angle of the light beam emitted from the lamp is large. Further, a printed circuit board is used for mounting the photodiode, which facilitates the mounting.

The above lamp unit is formed in a stack in the vertical direction, that is, the central axis direction. The number of stacks shall correspond to the required light power.

In general, these are often used at or near the sea. For this reason, it is usually stored in a lantern as shown in FIG.

[0013]

【effect】

 The present invention brings the following effects. A. Since the focal point is located in the peripheral extension of the upper and lower bases of the rotating parabolic reflector, there is room for arranging a large number of light emitters, which increases the radiant power and the divergence angle. be able to. I. By constructing the unit lamps in a stack, the required light power can be easily accommodated. C. Since a large number of light emitting elements can be arranged, it is easy to mix the light emitting diodes having different chromaticities quantitatively so as to have the same chromaticity.

[Brief description of drawings]

FIG. 1 is a part (right half) showing a configuration of a lighting device according to the present invention.
It is sectional drawing.

FIG. 2 is a cross-sectional view of a main part of a unit showing the action of light rays of a lamp according to the present invention.

FIG. 3 is a perspective view of main components showing an example of a lamp according to the related art.

[Explanation of symbols]

 1, 2 parabolic reflector 3,4 bottom extension 5,6 light emitting diode 7 parabolic reflector (conventional) 8 light emitting diode group (conventional)

Claims (2)

[Scope of utility model registration request] 1. A light emitting diode 5 having a focus position, respectively.
A base body in which reflecting mirror bodies 1 and 2 formed of a part of a paraboloid of revolution which is the center of the disposition position of 6 are joined in a zigzag shape, and a light emitting diode disposing portion in which the upper and lower bottom surfaces thereof are extended in the circumferential direction. Three
4 and a light emitting diode group 5 and 6 arranged in this portion. 2. A lamp according to claim 1, wherein the lamp is joined to the upper and lower bottoms to form a stack.