JPH10241420A - Outdoor luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drain hole structure with no light leak, in which water and insects hardly enter. SOLUTION: A luminaire mainbody 9 has the bottom formed in a double structure with an upper side bottom plate 91 and a lower side bottom plate 92 vertically neighboring and opposing each other. Plural drain holes 31, 32 are formed in the upper side bottom plate 91 and the lower side bottom plate 92, respectively. Arrangement is made for the drain holes 31 in the upper side bottom plate 91 not to be vertically aligned with the drain holes 32 in the lower side bottom plate 92. A line connecting any drain hole 31 on the upper side to any drain hole 32 on the lower side is not vertical.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outdoor lighting apparatus provided with a drain hole for discharging water droplets that have entered a main body of the apparatus.

[0002]

It is known to provide a plurality of drainage holes in the bottom of the body of an outdoor lighting fixture. Water droplets that have entered the inside of the instrument body are discharged to the outside through the drain holes. However, water may enter the drain hole in reverse. Insects may also enter through the drain holes. Further, light may leak to the outside from the drain hole. SUMMARY OF THE INVENTION An object of the present invention is to provide a drainage hole structure in which water and insects do not easily enter and light leakage does not occur.

[0004]

[Means for Solving the Problems]

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIG. In the illustrated outdoor lighting device, the bottom of the device main body 9 has a double bottom structure in which an upper bottom plate 91 and a lower bottom plate 92 are vertically adjacent and opposed to each other. A plurality of drain holes 31 and 32 are formed in each of the upper bottom plate 91 and the lower bottom plate 92. The drain holes 31 of the upper bottom plate 91 and the drain holes 32 of the lower bottom plate 92 are arranged so as not to be vertically aligned. The line connecting any upper drainage hole 31 and any lower drainage hole 32 is non-vertical. In the figure, reference numeral 1 denotes a hat-shaped light-transmitting glove detachably mounted on the apparatus main body 9, and reference numeral 2 denotes a pole for supporting the apparatus main body 9 from below. A lamp socket and a light source (single-necked fluorescent lamp) removably attached to the lamp socket are arranged inside the apparatus main body 9, but they are not shown. Supplement the explanation. Water droplets 4 may enter the interior of the instrument body 9. The water droplets 4 directly penetrate through a gap or the like between the device main body 9 and the translucent globe 1 or are dewed. The water droplet 4 falls on the lower bottom plate 92 through the upper drain hole 31, moves from there, and falls outside through the lower drain hole 32. Arrows indicate this path. The drain holes 31 and 32 have a size of 4 to 8 mm in diameter. A black paint is applied to the opposing surfaces of the upper bottom plate 91 and the lower bottom plate 92. This is from the upper drain hole 31 to the upper bottom plate 9
1. This is to reduce the possibility that light entering between the lower bottom plates 92 is repeatedly reflected between the opposing surfaces, and is projected downward from the lower drainage holes 32. In addition, if the amount of light emitted from the lower drain hole 32 is small, the possibility of insects being guided by the light decreases. There are two upper drain holes 31 and two lower drain holes 32. For this reason,
Even if one of them is closed by dust or the like, 32 functions without the remaining drain hole 31. Drain holes 31 and 32
Also acts as a respirator. The respiratory action dries the inside of the instrument body 9 and prevents condensation. As described above, the upper bottom plate 9
1 and the drain holes 32 of the lower bottom plate 92 are not arranged vertically. For this reason, the drain hole 31
• The possibility of unwanted light being projected through 32 is small.
For this reason, there is little fear that insects enter due to light. On the other hand, if watering is performed nearby, water may enter the inside of the device body 9 via the drainage holes 32 and 31 in this order. There is little possibility.

[0006]

According to the present invention, the bottom of the instrument main body can be
The lower bottom plate has a double bottom structure in which the lower bottom plate is vertically adjacent and opposed to each other, a plurality of drain holes are formed in each of the upper bottom plate and the lower bottom plate, and each of the drain holes of the upper bottom plate and the lower bottom plate are formed. The arrangement is such that the drain holes are not aligned up and down, so that an outdoor lighting device with less water and insects and no light leakage can be obtained.
Further, the structure is simple and the cost is low.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a main part of an outdoor lighting apparatus according to the present invention. 9: instrument body, 91: upper bottom plate, 92: lower bottom plate, 3
1: Drain hole, 32: Drain hole

Claims (1)

[Claims] 1. A bottom portion of an instrument body has a double bottom structure in which an upper bottom plate and a lower bottom plate are vertically adjacent to each other and opposed to each other.
An outdoor lighting device, wherein a plurality of drain holes are formed in each of the lower bottom plates, and the drain holes of the upper bottom plate and the drain holes of the lower bottom plate are arranged so as not to be vertically aligned. .