JP4882795B2 - Security light - Google Patents

Description

  The present invention relates to a security light that is attached to a pole such as a utility pole standing upright outdoors.

2. Description of the Related Art Conventionally, there is known a security light that is attached to a pole such as a utility pole standing on the street side to illuminate the street surface. This type of security light generally stores a linear light source and a reflector that reflects the light from the linear light source on the street side in the security light main body, and transmits light through the light projection opening of the security light main body. It is configured with sex gloves.
By the way, in the lighting equipment installed outdoors, light leakage may occur due to light leaks in the windows and fields of private houses on the road, and it is necessary to take measures against light pollution even in the above crime prevention lights .
Therefore, in the conventional security light, the longitudinal direction of the linear light source is installed so as to be substantially parallel to the street traveling direction, and the light distribution of the light emitted from the linear light source is controlled by the reflector and the globe. Thus, a technique for preventing light pollution has been proposed (see, for example, Patent Document 1).
JP 2006-12473 A

However, the conventional security light has a problem that no matter how the reflector plate is designed, the leakage light cannot be eliminated and the light is lost. Furthermore, in order to control the light of a single linear light source, at least a reflector having a dimension covering the linear light source is required, so that the size of the security light main body is increased and the weight of the security light main body is also increased.
The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a crime prevention light that can be reduced in size and weight and can be efficiently illuminated.

In order to achieve the above object, the present invention comprises a security light main body attached to a pillar standing outdoors, a first LED unit for irradiating the street light with a street traveling direction, opposite to the street traveling direction. A second LED unit for irradiating a direction, and a third LED unit for irradiating a direction on the road surface side substantially orthogonal to the street traveling direction, and providing the first and second LED units with a narrow-angle light distribution. In addition , there is provided a security light characterized in that the light distribution of the third LED unit is a wide-angle light distribution, and the back portion of the security light main body is formed in a shape along the outer peripheral surface of the column .

  Further, the present invention is the above invention, wherein a unit mounting portion for detachably mounting the first, second and third LED units is provided in the security light body, and a plurality of heat radiation fins are formed on the unit mounting portion. Features.

  Further, the present invention provides the above-described invention, wherein a partition plate is provided inside the security light body to partition it vertically, and the unit mounting portion and the first, second, and third LED units are disposed below the partition plate. In addition, a power supply module that supplies power to the first, second, and third LED units is disposed on the upper side of the partition plate.

According to the present invention, the first LED unit that irradiates the street traveling direction, the second LED unit that irradiates the direction opposite to the street traveling direction, and the third LED that irradiates the direction on the road surface side substantially orthogonal to the street traveling direction. Since the light source of the security light is configured by providing the three LED units of the unit, it is possible to reduce the size and weight as compared with the conventional security light that uses the lamp as a light source and includes a reflector that covers the lamp.
Furthermore, since three LED units are used as light sources, it becomes possible to control the light distribution and light emission direction of each LED unit individually, thereby eliminating light irradiation in a useless direction that causes leakage light. The road surface can be efficiently illuminated.
In particular, since the first and second LED units have a narrow-angle light distribution, it is possible to maintain sufficient brightness at a distance, and the third LED unit has a wide-angle light distribution, so that the vicinity of the security light is widely irradiated. Irradiance unevenness can be suppressed as a whole.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 is a perspective view of a security light 1 according to the present embodiment as viewed from below, FIG. 2 is a bottom view of the security light 1, FIG. 3 is a rear view of the security light 1, and FIG. 4 is a left side view of the security light 1. is there.
As shown in these drawings, the security light 1 is attached to a power pole 2 (see FIG. 2) which is an example of a support column installed outdoors, and illuminates a street. A light source unit 3 and the light source unit 3 are It has a security light main body 4 to be stored.

The security light main body 4 has a back surface portion 5 bent so as to draw an arc along the outer peripheral surface 2A of the utility pole 2, and the street-side (front side) contour 8 of the security light main body 4 is substantially concentric with the back surface portion 5. It is bent into a shape and is formed in a generally fan shape as viewed from the bottom.
As shown in FIG. 3, the back surface portion 5 is provided with a pair of mounting portions 6 formed with insertion holes 6 </ b> A through which the metal band-shaped mounting bands 7 are inserted. The security light main body 4 is attached to the utility pole 2 by tightening to the power pole.

When the crime prevention light main body 4 is attached to the utility pole 2, since the rear face portion 5 is bent along the outer peripheral surface 2 </ b> A of the utility pole 2, the utility pole 2 is fitted into the rear face portion 5. Thereby, the protrusion amount to the street side of the crime prevention light main body 4 is suppressed, and the compact crime prevention light 1 is realized.
Furthermore, since the security light main body 4 is attached so as to be fitted into the utility pole 2, the strength against the wind pressure from the lateral direction is increased.

FIG. 5 is a view of a cross section taken along line I-I in FIG. 2, and FIG. 6 is an exploded view of the security light 1.
As shown in FIG. 5, the security light main body 4 is provided with a partition plate 10 that divides the interior thereof into upper and lower parts and forms an electrical component storage chamber 11 </ b> A and a light source storage chamber 11 </ b> B. The partition plate 10 is fixed to the security light body 4 with a plurality of screws 13, and in the electrical component storage chamber 11 </ b> A, electrical components such as a power supply module 12 that supplies power to the light source unit 3 are mounted on the partition plate 10. It is stored.
In this way, the interior of the security light main body 4 is vertically divided, the electrical component storage chamber 11A is formed on the upper side, and the light source storage chamber 11B is formed on the lower side. Compared to a security light having a configuration in which a power supply module or the like is disposed, the projection of the security light on the road surface side is suppressed.

  The light source storage chamber 11 </ b> B of the security light main body 4 has a light projection opening 14 formed on the side facing the partition plate 10 (the bottom surface side when the security light 1 is attached) to form a light projection opening 14. As shown in FIG. 6, a light-transmitting globe 20 that covers the light source storage chamber 11B is attached. The globe 20 is formed with a light shielding portion 21 for cutting light traveling upward from the security light main body 4. The light shielding portion 21 is formed by a line prism formed by forming a plurality of line-shaped grooves extending in the horizontal direction on the outer peripheral surface of the globe 20 in the vertical direction, and the transmitted light is scattered by the line prism to shield the light. Done.

  The light source unit 3 stored in the light source storage chamber 11B is fixed to the first, second, and third LED units 31 to 33 and the light source storage chamber 11B, and the first to third LED units 31 to 33 are attached and detached. A unit mounting portion 35 that is freely fixed is provided.

  The first LED unit 31 and the second LED unit 32 illuminate the direction along the street traveling direction A (see FIG. 2) along the both. In this embodiment, the first LED unit 31 mainly emits light in the street traveling direction A. The second LED unit 32 emits light mainly in a direction substantially opposite to the street traveling direction A. The third LED unit 33 emits light mainly in the direction B (see FIG. 2) from the utility pole 2 toward the street.

  The first and second LED units 31 and 32 may be replaced with respect to the street traveling direction A. Strictly speaking, the light emission directions of the first LED unit 31 and the second LED unit 32 are not opposite to each other, and the light irradiation direction of the first LED unit 31 and the second LED unit depend on the irradiation range of the security light 1. An angle formed by 32 light emission directions is defined.

  Each of the first to third LED units 31 to 33 includes an LED element 45 and a lens body 40 formed of a resin material such as acrylic resin in a bullet shape as shown in FIG. The light source 41 is configured to be mounted on a mount substrate 42 formed of a high thermal conductivity material, and the light distribution characteristics can be controlled by adjusting the shape of the lens body 40.

  In the present embodiment, the light distribution of each of the first and second LED units 31 and 32 that illuminate the street traveling direction A and the opposite direction is a narrow-angle light distribution, which is sufficient at a distance from the security light 1. The brightness can be maintained, and the light distribution of the third LED unit 33 that irradiates the street side is a wide-angle light distribution, so that the vicinity of the security light 1 is widely irradiated, and the illuminance unevenness is suppressed as a whole.

In addition, there is a brightness standard for security lights, and the standard value varies depending on the amount of pedestrian traffic, but it is recommended that the security light satisfy at least the standard value for pedestrian traffic. Yes. The standard of brightness when the amount of pedestrian traffic is low is that the average brightness of the street surface is 3 lux or more, and the height from the road surface is 1.5 m (meters) on the central axis of the street. The vertical surface illuminance is 0.5 lux, and the behavior of a pedestrian ahead of 4 m (meters) is visible.
In the present embodiment, since the narrow-angle type is used for each of the first and second LED units 31 and 32 as described above, the crime prevention light 1 to 4 m (meters) without unnecessarily increasing the output of the LED unit. It is possible to achieve an illuminance at which a pedestrian's behavior can be sufficiently visually recognized even at a distance.

  Now, the unit mounting portion 35 is formed of a high thermal conductivity material, and a large number of heat radiating fins 36 arranged in parallel with a predetermined gap therebetween are integrally formed. In addition, as shown in FIG. 6, these heat radiation fins 36 are partly cut out in accordance with the shape of the mount substrate 42 of the first to third LED units 31 to 33, and the mounting recess into which the mount substrate 42 is fitted. 50 is formed, and after the mount substrate 42 is fitted into the mounting recess 50, the mount substrate 42 is fixed to the mounting recess 50 by the mounting screw 43. As a result, the mount substrate 42 comes into surface contact with the mounting surface of the mounting recess 50, and the heat generation of the LED elements 45 of the first to third LED units 31 to 33 is conducted to the heat radiation fin 36 through the mount substrate 42 and the mounting recess 50. Then, heat is efficiently radiated from the heat radiating fins 36.

As described above, according to the present embodiment, the crime prevention light main body 4 is irradiated with the first LED unit 31 that irradiates the street traveling direction A, the second LED unit 32 that irradiates the direction opposite to the street traveling direction A, and the street. Each of the third LED units 33 that irradiate the direction B on the road surface side substantially orthogonal to the traveling direction A is provided, and each of the first, second, and third LED units 31 to 33 is attached to the unit attachment portion 35. As described above, the light source of the security light is configured by the first, second, and third LED units 31 to 33. Therefore, the light source of the security light is smaller than the conventional security light having the lamp as the light source and including the reflector that covers the lamp. Weight reduction is possible.
Furthermore, since three LED units are used as light sources, it becomes possible to control the light distribution and light emission direction of each LED unit individually, thereby eliminating light irradiation in a useless direction that causes leakage light. The road surface can be efficiently illuminated.
In particular, in this embodiment, since the first and second LED units have a narrow-angle light distribution, it is possible to maintain a sufficient luminance at a distance, and the light distribution of the third LED unit is a wide-angle light distribution. Irradiation in the vicinity can be widely performed, and illuminance unevenness can be suppressed as a whole.

  Moreover, according to this embodiment, the unit attachment part 35 which attaches | detaches the 1st, 2nd and 3rd LED units 31-33 removably was provided in the crime prevention light main body 4, and the several radiation fin 36 was formed in the unit attachment part 35 The heat dissipation of the first, second and third LED units 31 to 33 can be improved and the service life can be extended. In addition, since the first, second, and third LED units 31 to 33 are configured to be detachable from the unit mounting portion 35, the LED units can be individually replaced.

  Moreover, according to this embodiment, since the back part 5 of the crime prevention light main body 4 was formed in the shape along 2 A of outer peripheral surfaces of the utility pole 2, when attaching the crime prevention light main body 4 to the utility pole 2, the utility pole 2 is on the back part 5. As a result, the amount of overhang of the crime prevention light main body 4 to the street side is suppressed, and a compact crime prevention light 1 is realized. Furthermore, since the security light main body 4 is attached so as to be fitted into the utility pole 2, the strength against the wind pressure from the lateral direction is increased.

  Moreover, according to this embodiment, the partition plate 10 is provided in the inside of the crime prevention light main body 4, and it partitions up and down, and the unit attaching part 35 and the 1st, 2nd, and 3rd LED units 31-33 are provided on the lower side of the partition plate 10. Since the power supply module that supplies power to the first, second, and third LED units 31 to 33 is disposed on the upper side of the partition plate 10, a power supply module or the like is provided on the rear side of the security light body 4. Compared with the security light having the arrangement, the protrusion of the security light to the road surface side is suppressed.

The above-described embodiment is merely an aspect of the present invention, and can be arbitrarily modified and applied within the scope of the present invention.
For example, in the above-described embodiment, the first to third LED units 31 to 33 are fixed to the mounting recess 50 by adjusting the tightening of the mounting screw 43 when the first to third LED units 31 to 33 are fixed to the mounting recess 50. You may make it the structure which can adjust the attachment angle of the 3rd LED units 31-33.
Thereby, it is possible to easily adjust the light emission direction of each of the first to third LED units 31 to 33 according to the shape of the street and the surrounding environment, preventing light irradiation to private houses and fields, Leakage light can be more reliably suppressed. In addition, adjustment of each attachment angle of the 1st-3rd LED units 31-33 is not restricted to the angle adjustment by the said attachment screw 43, Arbitrary mechanisms are employable.

For example, in the above-described embodiment, the configuration in which each of the first to third LED units 31 to 33 is attached to one unit attachment portion 35 is not limited to this. For example, the unit attachment portion is provided for each LED unit. Further, the mounting angle of the LED unit may be adjustable by configuring the mounting angle of each unit mounting portion with respect to the security light main body 4 to be adjustable.
For example, although the crime prevention lamp provided with three LED units of the 1st-3rd LED units 31-33 was demonstrated, it is needless to say that not only this but 4 or more LED units may be provided.

The perspective view of the crime prevention light which concerns on embodiment of this invention. Bottom view of security light. The rear view of a security light. Side view of a security light. Sectional drawing which looked at the II line | wire in FIG. The exploded perspective view of a security light.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Security light 2 Electric pole 4 Security light body 5 Back part 10 Partition plate 12 Power supply module 20 Globe 21 Light-shielding part 31 1st LED unit 32 2nd LED unit 33 3rd LED unit 35 Unit attachment part 36 Radiation fin 40 Lens body 42 Mount board 43 Attachment Screw 50 Mounting recess A Street traveling direction

Claims (3)

It is equipped with a security light body that can be attached to a column that is erected outdoors.
A first LED unit that irradiates the crime prevention light body with a street traveling direction, a second LED unit that irradiates a direction opposite to the street traveling direction, and a third LED that irradiates a direction on the road surface side substantially orthogonal to the street traveling direction. Providing at least three LED units of the unit;
The first and second LED units have a narrow-angle light distribution, and the third LED unit has a wide-angle light distribution.
A security light characterized in that a rear portion of the security light main body is formed in a shape along the outer peripheral surface of the support column . The crime prevention light according to claim 1,
A security light characterized in that a unit mounting portion for detachably mounting the first, second and third LED units is provided in the security light main body, and a plurality of heat radiation fins are formed on the unit mounting portion. In the crime prevention light according to claim 1 or 2 ,
A partition plate is provided inside the security light body to partition it vertically, and the unit mounting portion and the first, second, and third LED units are disposed below the partition plate, and the first, second, and A security light, wherein a power supply module for supplying power to the third LED unit is disposed on the upper side of the partition plate.

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