JP2007303246A - Flush type beacon light - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flush type beacon light 11 capable of bearing high load and emitting light in all directions. <P>SOLUTION: A lens 32 is so formed that its upper side 32a center projects arcuately and its upper side 32a width is larger than the lower side 32b width in cross section. The lens 32 is so disposed that the upper side 32a projects from the upper surface of a light body 15 to form a flush type beacon light 11 capable of emitting light in all directions. Since the side 32a and the lower side 32b of the lens 32 are received by a lens receiving part 48, when a load is applied to the lens 32, the lens is so supported that a compression load is applied thereto to increase the load resistance of the lens. Consequently, the lens 32 is prevented from being damaged. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an embedded marker lamp embedded in a road surface.

  Conventionally, for example, embedded beacon lamps are embedded and installed on road surfaces such as airport runways, taxiways, and apron areas where parking is provided.

This embedded marker lamp has a base embedded in a road surface and a lamp attached to the base, and the lamp is installed in a state of protruding from the road surface. In the lamp body, a ring-shaped lens, a light source disposed in the center of the lens, and the like are disposed, and a light projection window for emitting light from the light source through the lens is formed in the lamp body ( For example, see Patent Document 1.)
JP-A-5-280018 (page 2-3, FIG. 1-3)

  However, in a conventional embedded beacon lamp, a lens and a light source are accommodated inside the lamp body in order to withstand the load when the aircraft passes, so that the light emitting direction is formed on the lamp body. It was limited to the direction of the light window, and it was not possible to adopt a device that emits light in all directions around the lamp body at the position where the aircraft normally steps.

  The present invention has been made in view of the above points, and an object thereof is to provide an omnidirectional light emitting type embedded marker lamp having a high load resistance.

  An embedded beacon lamp according to claim 1; a base to be embedded; a lamp body; a lens having a cross-sectional shape in which a central portion on the upper side protrudes and a width on the upper side is wider than a width on the lower side; A lens receiving portion for receiving the side and lower side of the lens in a state in which the upper side of the lens protrudes from the upper surface of the lamp body, and a lamp mounted on the base having a light source disposed opposite to the lower side of the lens. It is what you are doing.

  For example, the base is embedded in a road surface such as an airport runway, a taxiway, or an apron area where a parking place is located. For example, a circular opening is formed on the upper surface of the lamp body to expose the lens in a protruding state. The lens is preferably made of tempered glass having a strong characteristic against a compressive load. The shape from which the central portion on the upper side of the lens protrudes includes, for example, a curved surface and a conical shape. The cross-sectional shape in which the width of the upper side of the lens is wider than the width of the lower side corresponds to a shape in which the side of the lens expands toward the upper side from the lower side. The lens receiving portion has, for example, the same cross-sectional shape as the side and lower side of the lens, and is in close contact with the side and lower side of the lens. The light source includes a light emitting diode element, an incandescent lamp, a discharge lamp, and the like, and may be combined with an optical component such as a reflector.

  According to a second aspect of the present invention, there is provided the embedded marker lamp according to the first aspect, wherein the lamp body has a cylindrical packing that covers the periphery of the lens including the peripheral portion on the upper side of the lens. The body body has a lower lamp body in which the lens is disposed via the packing, and a lens holding portion that is engaged with the upper side peripheral portion of the lens via the packing and sandwiches the lens between the lower lamp body and holds the lens. And an upper lamp body provided.

  The packing has elasticity, and a portion that covers the periphery of the upper side of the lens is provided above the portion that covers the periphery of the lens. The lower lamp body and the upper lamp body are combined and fixed with bolts or the like.

  The embedded beacon lamp according to claim 3 is the embedded beacon lamp according to claim 1 or 2, wherein a plurality of ribs project radially from the upper surface of the lamp body around the lens. Is.

  The rib distributes light so as not to block the light emitted from the lens by providing a cavity so that the light emitted from the lens is emitted through the inside of the rib or by narrowing the width of the rib itself. Characteristics can be improved.

  According to the embedded marker lamp of the first aspect, the omnidirectional light emitting embedded lamp is provided by arranging the lens whose upper side protrudes from the upper surface of the lamp body. A built-in beacon lamp can be formed, and the lens has a cross-sectional shape in which the width of the upper side is wider than the width of the lower side, so that the amount of light emitted from the lens can be increased and the side and lower sides of the lens can be received by the lens. By receiving at the portion, even if a load is directly applied to the upper side of the lens, the lens can be supported so that a compression load is applied, the load resistance can be increased, and damage to the lens can be prevented.

  According to the embedded marker lamp of claim 2, in addition to the effect of the embedded marker lamp of claim 1, the lens of the upper lamp side engages with the lens holding portion of the upper lamp body. In order to cover the surroundings with packing, when the upper lamp is attached to the lower lamp, the packing is pressed and contracted to ensure waterproofness, for example, when the lens is stepped on with tires such as aircraft Even if the lens slightly shrinks or moves to the lower lamp body, the shrinking packing is restored, so that water can be prevented from entering between the upper lamp and the lens, and the lens Can be more reliably prevented.

  According to the embedded marker lamp of claim 3, in addition to the effect of the embedded marker lamp of claim 1 or 2, a plurality of ribs are formed radially around the lens on the upper surface of the lamp body. For example, the impact on the lens when an aircraft or the like passes can be reduced and the lens can be protected.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  1 to 4 show a first embodiment. 1 is a cross-sectional view of an implantable beacon lamp, FIG. 2 is a cross-sectional view of an embedded beacon lamp in an exploded state, FIG. 3 is a plan view of the implantable beacon lamp, and FIG. It is explanatory drawing explaining generation | occurrence | production of the stress when a load is applied.

  As shown in FIGS. 1 to 3, the embedded beacon lamp 11 is an aerial beacon lamp that is embedded in a road surface 12 such as an airport runway, a taxiway, or an apron area where a parking area is located. A base 14 embedded in an embedded hole 13 formed in the road surface 12 and a lamp 15 attached to the base 14 are provided.

  The base 14 is, for example, a so-called thin base formed of a cast material such as an aluminum alloy. The base 14 has a disk shape and a cylindrical periphery raised from the periphery of the bottom 21. A lamp body housing part 23 having a surface part 22 and having an upper side for housing the lamp body 15 is formed.

  An opening 24 is formed in the center of the bottom surface portion 21, and a power terminal block 25 is attached facing the opening 24. A connection screw 26 to which a power line wired to the road surface 12 is connected is attached to the power terminal block 25. When the lamp body 15 is attached to the base 14, the power terminal block 25 is electrically connected to the lamp body 15 side. A power supply terminal 27 that is connected to and supplies power to the lamp body 15 is attached.

  A plurality of mounting holes 29 and the like through which a plurality of mounting bolts 28 for mounting the lamp are inserted from the lower surface are formed in the periphery of the bottom surface portion 21.

  The lamp 15 is also called a lamp, and includes a lamp body 30, a lens 32 covered with a packing 31 disposed on the lamp body 30, a light source 33, and the like. The lamp body 15 includes the O ring 34 that keeps the base 14 and the lamp body 15 in a liquid-tight state, positioning pins 35 that serve as a guide when the lamp body 15 is attached to the base 14, and the like. It is liquid-tightly attached to the base 14 by being inserted into the storage portion 23 from above and screwing and tightening a nut 36, which is a cap nut, to each mounting bolt 28 penetrating the peripheral portion of the lamp body 15.

  The lens 32 is made of, for example, tempered glass, and the outer shape in plan view is formed in a circular shape, and the cross-sectional shape in side view is such that the central portion on the upper side 32a protrudes upward in an arc shape, that is, the upper surface is spherical. The upper side 32a side (outer diameter) is wider than the width (outer diameter) of the lower side 32b, that is, a substantially trapezoidal cross section in which the side 32c of the lens 32 expands from the lower side 32b toward the upper side 32a. It is formed into a shape. In the center of the lower surface of the lens 32, a recess 32d in which the light source 33 is disposed is formed. The inner surface of the recess 32d is formed as an incident surface for entering light into the lens 32, the side 32c is formed as a reflecting surface for reflecting the light incident into the lens 32 toward the upper side 32a, and the upper side 32a emits light. Formed on the outgoing surface.

  The packing 31 is made of rubber having elasticity, for example, and is a cylindrical packing cylinder 31a that is attached to and covers the peripheral surface of the lens 32, and an upper part of the upper side 32a of the lens 32 at the upper part of the packing cylinder 31a. The packing upper part 31b is attached and covered, and the packing cylinder part 31a and the packing upper part 31b are integrally formed.

  The lamp body 30 includes an upper lamp body 37 and a lower lamp body 38 combined with the lower part of the upper lamp body 37, and a plurality of mounting screws 39 inserted from the lower lamp body 38 side. The lower lamp body 38 is combined to form a disk shape as a whole.

  The upper lamp body 37 is formed of a cast material such as an aluminum alloy, for example, and a fitting recess 40 is formed in the center of the upper lamp body 37 so as to expand downward. At the center of the upper surface of the upper lamp body 37, a circular window hole 41 is formed in which the upper portion of the lens 32 is arranged in a protruding state. A lens holding portion that holds the lens 32 sandwiched between the lower lamp body 38 and is engaged with the peripheral portion of the upper side 32a of the lens 32 via the packing upper portion 31b of the packing 31 at the inner peripheral edge of the window hole 41 42 is formed. The lens holding portion 42 includes an upper surface side holding portion 43 that holds the upper surface periphery of the lens 32 and a side surface side holding portion 44 that holds the side surface of the lens 32. At the periphery of the upper lamp body 37, a mounting hole 45 through which each mounting bolt 28 passes is formed, and a nut 36 in which a nut 36 screwed to the mounting bolt 28 is disposed on the upper side of each mounting hole 45 A portion 46 is formed.

  The lower lamp body 38 is formed of a cast material such as an aluminum alloy, for example, and a fitting projection 47 that fits into the fitting recess 40 of the upper lamp body 37 is formed at the center of the lower lamp body 38. A concave cylindrical lens receiving portion 48 that receives the lower side 32b and the side side 32c of the lens 32 via the packing 31 is formed inside the fitting protrusion 47. The lens receiving portion 48 includes a lens lower side receiving portion 49 that receives the peripheral portion of the lower side 32b of the lens 32, and a lens side receiving portion 50 that receives the side 32c of the lens 32. The lens side edge receiving portion 50 is formed in a cross-sectional shape in which the upper side width (outer diameter) is wider than the lower side width (outer diameter) and expands upward. In the center of the lens lower side receiving portion 49 of the lens receiving portion 48, an opening 51 in which the light source 33 is disposed is formed. A mounting hole 52 through which each mounting bolt 28 passes is formed in the periphery of the lower lamp body 38.

  The lamp body 15 is formed with a lens housing part 53 for housing the lens 32 via the packing 31 between the lens holding part 42 of the upper lamp body 37 and the lens receiving part 48 of the lower lamp body 38.

  A light emitting diode element 61 is used as the light source 33, and the light emitting diode element 61 is disposed in the light source unit 62. The light source unit 62 is attached to the lower surface of the lower lamp body 38 of the lamp body 15 so that the light emitting diode element 61 is disposed in the recess 32d of the lens 32 through the opening 51 of the lower lamp body 38 of the lamp body 15. Yes. The light source unit 62 includes a power receiving terminal (not shown) that is electrically connected to the power supply terminal 27 of the power terminal block 25 when the lamp 15 is attached to the base 14.

  Then, in order to install the embedded beacon lamp 11 on the road surface 12, the power line wired to the embedded hole 13 of the road surface 12 is connected to the power terminal block 25 of the base 14, and this base 14 is connected to the embedded hole 13. Install. The power terminal block 25 and the power supply terminal can be electrically connected by a method such as transformer coupling.

  The lamp body 15 assembled in advance on the base 14 is covered from above, and a nut 36 is fastened to a mounting bolt 28 penetrating the lamp body 15.

  In this installed state, the power supply terminal block 25 of the base 14 and the light source unit 62 of the lamp body 15 are electrically connected, and power is supplied from the lighting circuit through the power line, so that the light emitting diode element 61 is lit.

  The light emitted from the light emitting diode element 61 enters the lens 32 from the inner surface of the recess 32d, which is the incident surface of the lens 32, and the light incident on the lens 32 travels toward the upper side 32a and the side 32c and toward the side 32c. Is reflected from the side 32c, which is the reflecting surface, toward the upper side 32a, and protrudes in a spherical shape from the upper surface of the lamp body 15 from the upper side 32a of the lens 32 in all directions around the lens 32 with respect to the horizontal direction. It emits light mainly at the top of 6 °.

  Further, when an aircraft traveling on the road surface 12 passes, if the embedded sign lamp 11 is stepped on with an aircraft tire, a load is directly applied to the lens 32 protruding from the upper surface of the lamp body 15. The lens 32 is made of tempered glass, and has a characteristic that it is strong against a compressive load and weak against a tensile load.

  As shown in FIG. 4, when a load F is applied to the upper side 32a of the lens 32 from the vertical direction, a compressive stress F1 is generated in the vertical direction on the lower side 32b, and a compressive stress F2 in the vertical direction is also generated on the side 32c. The lens 32 supports the load F in a state where a compressive load is applied.

  In the horizontal direction, since it is supported by the lamp 15 at the periphery of the lower side 32b, a maximum tensile stress F3 is generated at the center of the lower side 32b. However, since the compressive stress F4 is generated in the horizontal direction on the side 32c, it cancels out with the tensile stress F3.

  Therefore, even if the load F is directly applied to the upper side 32a of the lens 32, the lens 32 can support the load F in a state where a compression load is applied.

  As described above, according to the embedded type marker lamp 11, the lens 32 projecting from the central portion on the upper side 32a side is disposed in a state in which the upper side 32a side projects from the upper surface of the lamp body 15, thereby enabling omnidirectional light emission. Can be formed, and since the lens 32 has a cross-sectional shape in which the width of the upper side 32a is wider than the width of the lower side 32b, the amount of light emitted from the lens 32 can be increased, and the lens By receiving the side 32c and the lower side 32b of the lens 32 with the lens receiving portion 48, even if a load is directly applied to the upper side 32a of the lens 32, the lens 32 can be supported so as to be subjected to a compressive load, and the load resistance can be increased. The height of the lens 32 can be increased, and damage to the lens 32 can be prevented.

  Note that when the lens shape is an inverted shape with the width on the lower side wider than the width on the upper side, there is no vertical or horizontal compressive stress on the side against the load applied from above, so the load is applied only on the lower side. The tensile stress in the horizontal direction of the lower side cannot be canceled, and there is a high possibility that the lens will be broken from the lower side as a base point.

  Further, since the periphery of the lens 32 is covered with the packing 31 up to the periphery of the upper side 32a side of the lens 32 with which the lens holding portion 42 of the upper lamp body 37 is engaged, the packing is performed when the upper lamp body 37 is attached to the lower lamp body 38. In addition to the fact that the lens 31 is pressed and contracted to ensure waterproofness, for example, when the lens 32 is stepped on with a tire such as an aircraft, the lens 32 slightly contracts or moves to the lower lamp body 38 side. Since the shrinking packing 31 is restored, water can be prevented from entering between the upper lamp body 37 and the lens 32, and the damage of the lens 32 can be more reliably prevented by the packing 31.

  Furthermore, by providing the packing 31 around the lens 32, an action of preventing the lens 32 from being stopped works and it is easy to secure a reliable optical axis.

  Note that the packing 31 can be used as a reflecting surface by forming the inner surface of the packing 31 facing the lens 32 so as to have high reflection characteristics.

  Next, FIG. 5 shows a second embodiment. FIG. 5 is a cross-sectional view of the embedded marker lamp.

  The upper side 32a of the lens 32 may be formed in a conical shape with the central portion of the upper side 32a as the top.

  Next, FIGS. 6 and 7 show a third embodiment. FIG. 6 is a plan view of the implantable marker lamp, and FIG. 7 is a cross-sectional view of the implantable marker lamp.

  A plurality of ribs 71 project radially from the upper surface of the lamp 15 around the lens 32. Each rib 71 is formed so as to increase in height from the outer peripheral side of the lamp body 15 toward the center side, and the height of the end portion on the center side facing the lens 32 protrudes from the lamp body 15. The height of the lens 32 is substantially the same. Inside each rib 71, a cavity 72 that opens to an end surface facing the lens 32 is formed. On the outer end side of the rib 71, an opening communicating with the cavity 72 is formed.

  As described above, since the plurality of ribs 71 project radially from the upper surface of the lamp body 15 around the lens 32, the tire of the aircraft that passes through the lens 32 when riding on the embedded sign lamp 11 The impact can be reduced and the lens 32 can be protected.

  Further, by providing the cavity 72 in the rib 71 facing the lens 32, the light emitted from the lens 32 can be emitted through the cavity 72 of the rib 71, and the light distribution performance can be prevented from deteriorating.

It is sectional drawing of the embedded type | mold marker lamp which shows the 1st Embodiment of this invention. It is sectional drawing of the decomposition | disassembly state of an embedded mark lamp same as the above. It is a top view of an embedded mark lamp same as the above. It is explanatory drawing explaining generation | occurrence | production of the stress when a load is applied to the lens of an embedded mark lamp same as the above. It is sectional drawing of the embedded type | mold marker lamp which shows 2nd Embodiment. It is a top view of the embedding type | mold marker lamp which shows 3rd Embodiment. It is sectional drawing of an embedded type | mold marker lamp same as the above.

Explanation of symbols

11 Recessed beacon light
14 base
15 lamp
30 Lamp body
31 Packing
32 lenses
32a Upper side
32b bottom
32c side
33 Light source
37 Upper lamp
38 Lower lamp
42 Lens holder
48 Lens receiver
71 Ribs

Claims (3)

An embedded base;
The lamp body, a lens with a cross-sectional shape in which the central part of the upper side protrudes and the width of the upper side is wider than the width of the lower side, A light receiving body having a lens receiving portion, a light source disposed opposite to the lower side of the lens, and attached to the base;
An embedded beacon lamp characterized by comprising: The lamp body has a cylindrical packing that covers the periphery of the lens including the periphery on the upper side of the lens,
The lamp body includes a lower lamp body in which the lens is disposed via the packing and a lens holding portion that is engaged with the upper side peripheral portion of the lens via the packing and sandwiches the lens between the lower lamp body and holds the lens. The embedded lamp according to claim 1, further comprising: an upper lamp body provided with a lamp. The embedded sign lamp according to claim 1 or 2, wherein a plurality of ribs project radially from the periphery of the lamp body around the lens.

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