JPS5950803B2 - Recessed indicator light - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a recessed marker light, and relates to a marker light used in airport areas, general roads, and the like.

[Technical background of the invention]

Conventionally, this type of recessed indicator light is disclosed in US Pat. No. 3,463, for example.
The configuration described in the specification of No. 913 is known.

The configuration of this conventional marker light is that a screw hole is formed in the upper flange of a wiring box buried in the road surface, and an adjustment ring is placed on this flange and engaged with a long hole formed in this adjustment ring. Fix the adjustment ring by screwing the bolt into the threaded hole in the flange, fix the holding frame placed on top of this adjustment ring so as to cover this adjustment ring, and fix the light guide to this holding frame with the bolt. A structure is adopted in which a lamp body having a bay window is fitted and fixed with bolts, the lamp body and the holding frame form an airtight chamber, and the lamp is placed in this chamber.

In this conventional marker light, a plurality of indicators are formed on the adjustment ring, and each indicator indicates the position where the light guide window of the light body can face, and the holding frame also indicates the direction of the light guide window of the light body. The adjustment ring is fixed by selectively aligning the indicator on the adjustment ring with the direction of the light guide window of the lamp body in advance, and the holding frame is also oriented according to the index to match the direction of the light guide window of the lamp body. It is designed to be fixed.

[Problems with background technology]

In the above-mentioned conventional indicator light, an index is required to align the direction of the adjustment ring, and since the adjustment ring is covered by a holding frame, an index is also required on the holding frame, which complicates the structure and makes assembly work difficult. Furthermore, the direction of the light guide window of the lamp body must be adjusted by removing the lamp body and the holding frame and adjusting the direction of the adjustment ring using a slotted hole, which has the disadvantage of poor operability.

In addition, in the above-mentioned conventional marker lights, the empty space in which the lamp is placed is made up of the light body and the holding frame, so the optical system unit made up of the light body and the holding frame becomes large and has a complicated structure. It has its drawbacks.

[Purpose of the invention]

The present invention has been made in view of the above points, and it is possible to adjust the orientation of the light guide window of the lamp body on the road surface without removing the lamp body, and without the need for special indicators etc. To provide a built-in marker lamp which can be easily aligned, has good assemblability, has a compact lamp body, has a simple structure, and is easy to manufacture.

[Summary of the invention]

The present invention provides a wiring box that is embedded in the road surface and has a flange on the upper part, and a wiring box that is embedded in the road surface and has a flange on the upper part. A plurality of elongated holes are arranged on the circumference at the periphery, a light guide groove is formed on the periphery for projecting light approximately laterally, and a side step part and a plurality of elongated holes located on the inner periphery are provided. The holding frame is placed on the flange so that the upper surface is exposed above the road surface by forming several threaded holes, and the holding frame is inserted through the long holes and the mounting direction of the holding frame is adjustable in the horizontal plane with respect to the flange. It has a plurality of fixing bolts, a peripheral edge is placed on the side step of the holding frame, is supported by the holding frame, has a light guide window facing the light guide groove on the upper surface, and forms an airtight cavity inside. and a light body with a through hole formed in its periphery facing the perforated hole in the side step part and housed in the holding frame, a lamp disposed in the empty space, and the lamp and the light emitting window. The holding frame also functions as a conventional adjustment ring, and the holding frame is extended so that its light guide groove is aligned with the light projection direction. The lamp is adjusted with holes and fixed to the flange of the wiring box with bolts, and the lamp body, which has an airtight chamber in which the lamp is placed, is accommodated and fixed within the holding frame.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

In the drawings, FIG. 1 is a sectional view of the assembled state, and FIG. 2 is an exploded perspective view thereof.

In the figure, reference numeral 1 denotes a metal wiring box that is buried in the road surface and houses a transformer 2 inside.

This wiring box 1 is formed into a cylindrical shape with an open top end, and is provided with a cord insertion hole 3 on one side and a ring-shaped flange 5 having four threaded holes 4 around the top opening.

Note that 6 is an auxiliary ring provided above the wiring box 1.

A holding frame 7 is fixed to the tapped hole 4 of this flange 5 via four bolts 8.

The holding frame 7 is placed on the flange 5 so that the upper surface thereof is exposed on the road surface, and the holding frame 7 is formed of cast iron or aluminum into a flat disc shape with a tapered outer peripheral edge of the upper surface. A plurality of elongated holes 10, for example four, are formed on the upper surface side of the periphery, approximately laterally from one side of the storage hole 9, through which the bolts 8 are inserted. A light guide groove 11 that gradually slopes upward toward the outer periphery so as to project light onto the flange 5 has a fitting protrusion 12 that fits with the inner periphery of the flange 5 on the bottom side, and a fitting protrusion 12 that fits with the inner periphery of the flange 5 on the outside thereof. A contact surface 13 in contact with the inner and outer peripheral edges of the upper surface and an annular cavity 14 are formed therebetween.

Further, an annular groove 15 is formed in the inner contact surface 13, and an O-ring 16 for sealing a gap with the flange 5 of the wiring box 1 is accommodated in the annular groove 15.

In addition, a rectangular recess 17 that is open to the top side is formed in the upper part of the inner peripheral edge 19 of this holding frame 7, and screw holes 21 are formed in the four corners of the side step part 18 formed at the bottom surface of the four parts 17. has been done.

Further, tapered surfaces 22 are formed on the inner peripheral edges of the side step portions 18, respectively.

The lamp body 30 of the optical system unit 24 is attached to the holding frame 7 with an O-ring 23 interposed on the tapered surface 22 by screws 25 inserted into the threaded holes 21 of the side step portions 18.

The optical system unit 24 includes a lower case 26 and an upper case 2.
7 is connected with a screw 29 via an O-ring 28 to form a lamp body 30 that constitutes an airtight chamber 47, and an optical System 33 is now installed.

The lower case 26 is formed by drawing a single metal plate and includes a cylindrical portion 34 that fits into the storage hole 9 of the holding frame 7 and the holding frame 7.
A peripheral edge 35 that fits into the recess 17 and is placed on the side step 18.
are integrally formed, and the bottom of the cylindrical portion 34 has an inwardly bulging portion 36 and a plurality of outwardly protruding protrusions 37, and the four corners of the peripheral edge 35 have the screws 25 and 29. Screw insertion holes 38 and 39 are respectively formed therethrough.

An insulating plate 40 is attached to the upper surface of the bulge 36 from the inside with screws 41, and a lead wire 42 from the transformer 2 and a lead wire 44 connected to the lamp socket 43 are connected to the insulating plate 40. A terminal 45 to be connected is embedded and fixed, and the space of the bulging portion 36 on the outside thereof is filled with a heat-resistant resin 46 such as epoxy resin or silicone resin.

The upper case 27 is made of cast iron or aluminum, and is formed into a rectangular shape whose peripheral edge fits into the recess 17 of the holding frame 7 and is placed on the peripheral step 18. A hollow space 48 forming a sealed circular space 47 with a threaded hole 49 into which the screw 31 is screwed together and an annular groove 50 for housing the 01J ring 28 are formed at the four corners of the space 48. Circumferential stepped portion 18 of the holding frame 7
A through hole 51 through which the screw 25 is inserted and a tapped hole 52 into which the screw 29 is screwed are formed facing each other.

Further, a rectangular light guide window 53 facing the light guide groove 11 is opened on one side of the space 48, and the light guide window 53
A waterproof glass 54 is attached with adhesive or the like.

The base body 32 is formed from a metal plate into a ring shape with a diameter slightly smaller than the inner diameter of the lower case 26, and a screw insertion hole 55 through which the screw 31 is inserted is formed around the ring shape.

The optical system 33 includes a light source lamp 56 such as a halogen lamp,
The light source lamp 56 and the reflector 57 are connected to each other via a first support frame 60. A filter 5 is installed at the rear of the base 32.
8 and a light control body 59 are arranged at the front part of the base body 3 through a second support frame 61, optically facing the lamp 56 and the light guide window 53, respectively.

The first support frame 60 is attached to the base 32 on both sides with screws 62 so that the position can be adjusted freely, and includes a reflector mounting plate 63 in which the opening periphery of the reflector 57 is attached in the center, and a reflector mounting plate 63 on which the opening peripheral edge of the reflector 57 is attached. It is composed of a lamp mounting plate 65 that is framed in a trapezoidal shape from both sides of the rear surface of the plate 63 and has a lamp holder 64 in the center thereof that holds the light source lamp 56.

As shown in FIG. 3, the lamp holder 64 is inserted into pin insertion holes 102 formed around the lamp insertion hole 101 of the lamp mounting plate 65, and has a protrusion 104 formed by a tapered surface 103 at its rear end. a ring-shaped connecting plate 108 having an operation plate 107 in which the tips of the three locking pins 105 are connected by caulking or nuts 106; and the connecting plate 108 and the lamp. It is composed of three springs 109 each wound around a locking pin 105 between the mounting plate 65 and the mounting plate 65.

Further, the light source lamp 56 has a disc-shaped flange 56b formed at the tip of the base 56a into which the lamp socket 43 is fitted, and a disc-shaped flange 56b at three locations around the flange 56b, which is slightly smaller than the protrusion 104 of the locking pin 105. A locking hole 56e is formed by combining a large-diameter hole 56C with a small-diameter elongated hole 56d connected thereto.

The second support frame 61 has screws 6 on both sides with respect to the base body 32.
6, the light control body 5 is attached to the inside so that the position can be adjusted freely.
Threaded holes 68 on both sides of the rear surface of the light control case 67 that houses the
A mounting piece 69 having a shape is formed by bending.

The mounting piece 71 of the filter case 70 attached to the outer periphery of the filter 58 is attached to the mounting piece 69 by the screw 7.
It is attached by 2.

Next, the assembly method and its operation will be explained.

The wiring box 1 is buried and fixed in a hole excavated with a cutter or the like at the same time as the road surface is being constructed, or after the construction is completed.

Then, the holding frame 7 is placed on the flange 5 of the wiring box 1 in this state with the light guide groove 11 aligned with the light projection direction,
From above the holding frame 7 exposed on the road surface, insert the bolt 8 into the elongated hole 1.
The holding frame 7 is fixed so that the upper surface thereof is exposed above the road surface by inserting the holding frame 7 through the holding frame 7 from the 0 position, adjusting the mounting direction in a horizontal plane relative to the flange 5, and screwing it into the threaded hole 4 of the flange 5.

At this time, since the adjacent elongated holes 10 of the holding frame 7 are arranged at different angles, there is no mistaking the orientation when placing the holding frame 7, and the elongated holes 10 allow the flange 5 to be illuminated in the horizontal plane. The projection direction can be finely adjusted from the outside.

On the other hand, when installing the light source lamp 56, hold the base 561 and insert the large diameter hole 56C of the collar 56b into the locking pin 105 of the lamp holder 64.
A is rotated from the large diameter hole 56C toward the small diameter elongated hole 56d.

Then, the spring 109 is formed around the small diameter elongated hole 56d.
The tapered surface 103 of the locking pin 105 is urged forward by
held by.

At this time, since the spring 109 is made to have a compressive force above a certain level in consideration of the holding force of the lamp, the spring 109 rotates smoothly after being inserted into the light source lamp holder 64 (in some cases, the spring 109 does not rotate easily).

In that case, when the operation plate 107 is moved backward against the spring 109, the tapered surface 10 of the locking pin 105
Since the gap between the light source lamp 3 and the lamp mounting plate 65 is increased, the light source lamp 56 can be easily mounted.

Then, the lamp socket 43 is attached to the base 568 of the light source lamp 56.

Additionally, the filter 58 is attached to the mounting piece 69 of the second support frame 61.
using the screws 72, and in this state the base 3
The optical system 33 arranged on 2 is adjusted.

First, the filament center of the light source lamp 56 is located at the reflector 5.
Since the focal position is basically set at No. 7, the adjustment is performed by measuring the distance from a reference plane provided in advance on the outer periphery of the reflector 57 to the flange 56b of the light source lamp 56.

Furthermore, the relationship between the light source lamp 56, the filter 58, and the light control body 59 is such that the first and second support frames 60° and 61
Adjust by moving.

Next, the base body 32 in this state is fixed to the bottom surface of the upper case 27 with screws 31, and the annular groove 5 of this upper case 27 is further fixed.
Attach the rear lower case 26 containing the O-ring 28 to the screw 29.
The light body 30 of the optical system unit 24 is constructed by fixing the light body 30 with

The lamp body 30 in this state has an O-ring 28 interposed between the upper case 27 and the lower case 26, so that the lamp body 30 is
The internal cavity 47 is completely airtight.

After inserting the O-ring 23 into the cylindrical part 34 of the lower case 26, the lamp body 30 of the optical system unit 24 is stored in the storage hole 9 of the holding frame 7 and placed on the side step part 18, screw 2
Fixed at 5.

Then, since the holding frame 7 and the lamp body 30 are fixed with the O-ring 23 in between, rainwater or dust will not enter the inside of the wiring box 1.

In addition, the lamp body 30 needs to be removed from the holding frame 7 during repair after installation, but when the lamp body 30 is removed, the dirt that has entered the recess 17 of the holding frame 7 may accumulate around the O-ring 23. However, since the necessary positional surfaces of the lamp body 30 and the holding frame 7 are the tapered surface 22 and the planar side step portion 18, cleaning can be easily performed.

On the other hand, since the inner chamber 47 of the removed light body 30 is in an airtight state, even if it is placed on the road surface, it is possible to prevent the intrusion of dirt, etc. There is a protrusion 37 on the bottom of the terminal 45.
Since the lead wires 42 and the like do not protrude, the lead wires 42 and the like are not bent.

Now, if we consider the state of the marker light assembled in the above manner after installation, we will see that since the upper surfaces of the holding frame 7 and the light body 30 are exposed on the road surface, they may be damaged by the movement of an aircraft or automobile. Although the holding frame 7 is moved slightly in the running direction, the fitting protrusion 12 of the holding frame 7 contacts the inner periphery of the flange 5, so that the road surface is not damaged by the outer periphery of the holding frame 7.

Additionally, vertical loads are applied to the holding frame 7 due to the movement of an aircraft, etc., but the holding frame 7 is
Since it is supported by two contact surfaces 13, there is no problem in terms of strength.

〔Effect of the invention〕

According to the present invention, the holding frame placed on the flange of the wiring box has a plurality of elongated holes arranged on the circumference at the periphery, and a light guide groove for projecting light substantially laterally on the periphery. , and is fixed to the flange in a horizontal plane with a bolt inserted through this elongated hole so that the direction can be adjusted.
A lamp body having a light emitting window and an airtight cavity formed inside the side step formed on the inner peripheral edge of this holding frame is fitted and fixed, a lamp is disposed in this cavity, and this lamp and Since the light control body is provided opposite the light guide window, the holding frame can be fixed in the same direction using the light guide groove, and since the holding frame is exposed from the road surface, the direction of the light body on the road surface, that is, the inside of the light body can be fixed. It is possible to adjust the position of the optical system such as the lamp and light control body installed in the frame, and there is no need for indicators on the holding frame during assembly.Furthermore, the lamp can be placed on the side of the holding frame in an empty space. Because it is housed in a holding frame with By changing the optical system, a desired different light distribution can be obtained without changing the optical system.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a built-in marker lamp showing one embodiment of the present invention, FIG. 2 is an exploded perspective view of the same, and FIG. 3 is an exploded perspective view of the lamp holder. 1... Wiring box, 5... Flange, 7... Holding frame, 8... Bolt, 10
...Long hole, 11 ... Light guide groove, 18.
...Side step, 21...Screw hole, 30...
... Lamp body, 51 ... Through hole, 53 ...
・Light leading window, 56... Lamp, 59...
・Light control body.

Claims (1)

[Scope of Claims] 1. A wiring box buried in a road surface and having a flange on the upper part, and a light beam having a plurality of elongated holes arranged circumferentially at the periphery and projecting light substantially laterally onto the periphery. a holding frame that is placed on the flange so that the upper surface thereof is exposed above the road surface, the holding frame having a lead-out groove and having a same step part and a plurality of screw holes located in the same step part on the inner peripheral edge; A plurality of bolts are inserted through the elongated holes and fix the holding frame to the flange in a horizontal plane, and the periphery is placed on the same level of the holding frame and supported by the holding frame. The upper surface has a light guide window facing the light guide groove, and an airtight cavity is formed inside, and the peripheral edge has a through hole opposite to the threaded hole in the same step part. A lamp body formed with a through hole facing the screw hole and housed within the holding frame, a lamp disposed within the empty space, and a light control disposed facing the lamp and the light guide window. A recessed indicator light characterized by having a body.