JP4865252B2 - Underground lighting fixture - Google Patents

Description

  The present invention relates to an underground luminaire used by being embedded in the ground.

In recent years, with the increase in the scale of commercial facilities, various rendering techniques are required to make a large space have a unified atmosphere. One such production method is the use of underground lighting fixtures, which are utilized for production of facilities at night. Also, in recent commercial facilities, there are cases in which the use of underground luminaires is performed not only outdoors but also indoors. For example, underground luminaires are used at indoor entrances and the like. There is a case. 2. Description of the Related Art Conventionally, as such an underground lighting fixture, there has been known a lighting fixture including a cylindrical lamp that stores a light source, and a box that stores the lamp in the basement so that the lamp can protrude and retract with respect to the ground surface. (For example, refer to Patent Document 1).
Japanese Utility Model Publication No. 56-2506

  However, in the conventional underground luminaire, since the lamp was supported by the inner surface and the upper surface of the box, when a load is applied to the upper end portion (light emitting surface) of the lamp exposed to the ground surface, There is a possibility that the support structure is deformed.

  In addition, the power line for supplying power to the light source stored in the lamp is usually stored in the box, and adjusted to a length with a certain margin so that the lamp can be pulled out of the box in the inspection work of the lamp. The For this reason, it is necessary to secure a large storage space in the box in order to store the power line. Therefore, for example, as in the underground luminaire described in Patent Document 1, the lighting device includes a lead-out portion for leading the power supply line on the lower surface of the lamp, and has a storage space for the power supply line below the lamp. In the appliance, the size of the box in the height direction is increased. As described above, recently, underground lighting fixtures may be installed in indoor entrances and the like, and may be embedded in shallowly stretched tiles or concrete, so the height direction of the box If the size of the lamp is large, there is a problem that the installation place of the underground lighting apparatus is limited.

  The present invention has been made in view of such a point, and there is no possibility that the box supporting the lamp is deformed even when a load is applied to the light emitting surface of the lamp exposed on the ground surface. An object of the present invention is to provide an underground luminaire that can reduce the size in the height direction.

In order to achieve the above object, the invention of claim 1 is characterized in that a cylindrical lamp for storing a light source and an opening for inserting the lamp are formed in an upper surface portion, and supports the lamp inserted in the opening. An underground lighting apparatus comprising a box, wherein the light emitting surface of the lamp is exposed to the ground surface, and the lower end of the lamp is in contact with the inner bottom surface of the box The lamp is supported in this state, and the power line led out from the lamp is guided in a substantially horizontal direction by a predetermined length from the side surface of the lamp. The lamp is configured so as not to be bent downward, and the lamp has a lead-out portion on the side surface for leading out the power supply line, and the lead-out portion connects the power supply line led out from the lamp from the side surface of the lamp. It is characterized by guiding in a substantially horizontal direction by a predetermined length .

  According to a second aspect of the present invention, in the underground embedded lighting apparatus according to the first aspect, an upper surface portion of the box is detachable.

According to the underground illuminating device of claim 1, the box body has the light emitting surface of the lamp exposed to the ground surface, and the lower end portion of the lamp is in contact with the inner bottom surface of the box body. Therefore, the load applied to the light emission surface of the lamp can be supported on the ground on which the box is installed via the bottom of the box. For this reason, deformation of the box due to the load applied to the light emitting surface of the lamp can be prevented, and the lamp can be reliably supported by the box. According to the underground luminaire of claim 1, the power supply line is guided in a substantially horizontal direction by a predetermined length from the side surface of the lamp by guiding the power supply line led out from the lamp. The power line led out from the lamp between the lower end of the lamp and the inner bottom surface of the box when the lamp is stored in the box so as not to be bent downward by its own weight immediately after being led out from the lamp. Can be prevented from being pinched. Moreover, according to the underground luminaire described in claim 1, since the lamp has a lead-out portion on the side surface for leading out the power line, a storage space for storing the power line is provided below the luminaire. There is no need to secure it. For this reason, the size of the height direction of a box can be made small. Further, since the power line led out from the lamp is guided in a substantially horizontal direction by a predetermined length from the side surface of the lamp by the lead-out portion, when the lamp is stored in the box, the lower end of the lamp and the inner bottom surface of the box It is possible to prevent the power supply line led out from the lamp from being sandwiched between them.

  According to the underground-embedded lighting fixture according to claim 2, since the upper surface portion of the box body is detachable, the upper surface portion is removed in a state where the box body is embedded in the ground to supply power to the inside of the box body. The drawing and connection of the wire becomes possible, and the construction work of the lighting apparatus becomes easy.

  Hereinafter, an underground lighting apparatus according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows an underground lighting apparatus according to this embodiment. The underground lighting apparatus 1 is an apparatus that is embedded and used in the ground, and includes a cylindrical lamp 2 that stores a light source, and a box 3 that stores at least the lower end side of the lamp 2. ing.

  The box 3 includes a storage portion 31 that stores the lower end side of the lamp 2 and the power line 4 led out from the lamp 2, and a cover portion (upper surface portion) 32 that is detachably attached to the storage portion 31. . The cover portion 32 is formed with an opening 30 for inserting the lamp 2.

  The lamp 2 has a light exit surface 2a for irradiating light emitted from the light source upward. Moreover, the lamp 2 has the derivation | leading-out part 5 for deriving | leading-out the power wire 4 in the lower end side of the side surface 2c. The lead-out unit 5 guides the power supply line 4 led out from the lamp 2 from the side surface 2c of the lamp 2 in a substantially horizontal direction a by a predetermined length. That is, immediately after the power supply line 4 is led out from the lamp 2, the lead-out portion 5 is formed on the side surface 2 c of the lamp 2 so that the power line 4 is not bent downward by its own weight and the power supply line 4 is difficult to be arranged below the lamp 2. To do. Such a structure of the lead-out portion 5 includes, for example, a pipe having a predetermined length having predetermined elasticity (that is, elasticity that does not easily be bent downward by the power line 4 and its own weight) on the side surface 2c of the lamp 2. In contrast, it is formed by arranging the power supply line 4 in a substantially vertical direction.

  The box 3 includes the lamp 2 inserted into the opening 30 in a state where the light emitting surface 2a of the lamp 2 is exposed to the ground surface G and the lower end 2b of the lamp 2 is in contact with the inner bottom surface 31a of the box 3. To support. The power line 4 led out from the lamp 2 is guided by the lead-out portion 5 and stored in a storage space formed on the side of the stored lamp 2.

  Next, a construction method example of the underground lighting fixture 1 having the above-described configuration will be described with reference to FIGS. First, a concave portion for embedding the underground lighting fixture 1 is formed on the ground, and the box 3 is installed in the concave portion. At this time, the box 3 is installed so that the bottom of the box comes into contact with the bottom of the recess in a substantially plane. Then, in this state, as shown in FIG. 2, the cover 32 is removed from the storage part 31, and as shown in FIG. 3, the power line 4 is pulled in and connected. The connection portion is hardened with resin or the like for waterproofing. When the operation of drawing in the power supply line 4 and the connection work are completed, as shown in FIG. 4, the lamp 2 is installed in the storage unit 31, and the power supply line 4 is arranged on the side of the lamp 2 to cover the storage unit 31. The part 32 is attached. Then, as shown in FIG. 5, a mortar, a tile, or the like is stretched on the cover portion 32, and a waterproof sealing material 7 or the like is filled in the gap between the ground and the lamp 2. Thus, the construction of the underground lighting fixture 1 is completed.

  Thus, according to the underground luminaire 1 of the present embodiment, the box 3 has the light exit surface 2 a of the lamp 2 exposed to the ground surface G, and the lower end 2 b of the lamp 2 is the box 3. Since the lamp 2 is supported while being in contact with the inner bottom surface 31a, the load applied to the light emitting surface 2a of the lamp 2 is supported on the ground where the box 3 is installed via the bottom of the box 3. Can do. For this reason, deformation of the box 3 due to the load applied to the light emitting surface 2 a of the lamp 2 can be prevented, and the lamp 2 can be reliably supported by the box 3. In addition, since the load applied to the lamp 2 is supported by the ground via the bottom of the box 3, and it is not necessary to support the load only by the box 3, the structure of the box 3 can be simplified. The manufacturing cost of the box can be suppressed.

  Moreover, since the cover part 32 of the box 3 is detachable, the cover part 32 is removed in a state where the box 3 is buried in the ground, and the power line 4 can be drawn into and connected to the inside of the box 3. Installation work of lighting equipment becomes easy.

  Furthermore, since the lamp 2 has a lead-out portion 5 for leading out the power supply line 4 on the side surface, it is not necessary to secure a storage space for storing the power supply line 4 below the lighting fixture. For this reason, the size of the box 3 in the height direction b (see FIG. 1) can be reduced.

  Further, since the power supply line 4 led out from the lamp 2 is guided in a substantially horizontal direction a from the side surface of the lamp 2 by the lead-out portion 5 by a predetermined length, when the lamp 2 is stored in the box 3, the lamp 2 It is possible to prevent the power line 4 led out from the lamp 2 from being sandwiched between the lower end 2b of the lamp and the inner bottom surface 31a of the box 3.

  Further, by providing the lead-out portion 5 on the lower end side of the lamp 2, when the lamp 2 is pulled out from the box 3 with the underground lighting fixture 1 embedded in the ground, the lead-out portion 5 is attached to the cover portion 32. It becomes difficult to get caught, and the lamp 2 can be easily pulled out from the box 3 as shown in FIG. For this reason, the inspection work of the lamp 2 after installing the underground lighting fixture 1 becomes easy. Further, for example, when the lamp 2 has failed or has reached the end of its life, the mortar and the like placed on the cover portion 32 is removed and the cover portion 32 is removed, so that the connection and the like can be easily performed again.

  The present invention is not limited to the configurations of the various embodiments described above, and various modifications can be made. For example, as illustrated in FIG. 7, the shape of the cover portion 32 of the box 3 may be a shape that decreases from the opening 30 toward the edge of the cover portion 32. By forming the cover portion 32 in such a shape, the cover portion 32 is not easily deformed even when a large force is applied to the cover portion 32 from above.

The partial cross section side view of the underground lighting fixture which concerns on one Embodiment of this invention. Explanatory drawing of the construction method of the lighting fixture. Explanatory drawing of the construction method of the lighting fixture. Explanatory drawing of the construction method of the lighting fixture. Explanatory drawing of the construction method of the lighting fixture. The perspective view which shows the state which pulled out the lamp from the box in the installation state of the lighting fixture. The partial cross section side view of the underground lighting fixture which concerns on the modification of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Underground lighting fixture 2 Lamp 3 Box 4 Power supply line 5 Derivation part 2a Light emission surface 2b Lower end part 2c Side surface 31 of a lamp Storage part 32 Cover part (upper surface part)
31a inner bottom

Claims (2)

An underground lighting apparatus comprising: a cylindrical lamp that houses a light source; and an opening for inserting the lamp formed in an upper surface portion, and a box that supports the lamp inserted in the opening. There,
The box supports the lamp in a state where the light emitting surface of the lamp is exposed to the ground surface, and the lower end of the lamp is in contact with the inner bottom surface of the box ,
The power line led out from the lamp is guided in a substantially horizontal direction from the side surface of the lamp by a predetermined length so that the power line is not bent downward by its own weight immediately after being led out from the lamp. ,
The lamp has a lead-out portion on the side for leading out the power line,
The derivation unit guides the power line led out from the lamp in a substantially horizontal direction by a predetermined length from a side surface of the lamp, and is embedded in the underground lighting apparatus.   The underground embedded lighting device according to claim 1, wherein an upper surface portion of the box is detachable.

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