JP2000228102A - Lamp for marker lamp, embedded marker lamp and embedded marker lamp device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To satisfy a required light distribution characteristic even with a lamp for a marker lamp having a small light source by setting a reflection light distribution pattern produced by multiple facets each having a curved surface constituting a reflector so as to pass the optical axis of the whole reflection light distribution of the reflector. SOLUTION: Respective facets provided by dividing the upper-half and lowerhalf emission surfaces 15, 16 reflecting the light emitted from a bulb 11 into a plurality of facets 15a-15e, 16a-16e are each formed into a shape which has a different, smooth free curved surface and whose boundaries to the adjacent facets, join different curved surfaces together, and are set so that marker light having a specific luminous intensity mainly with respect to a horizontal angle of a light distribution characteristic can be provided. A lamp 10 for a marker lamp is so regulated as to have a specific light distribution characteristic, and in order to provide the light distribution characteristic, light distribution patterns formed with the reflection of the respective facets 15a-15e, 16a-16e of a reflector 12 are set different to one another, so that the compound light distribution pattern formed with the reflection light distribution patterns of the respective facets satisfies the specific light distribution characteristic.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sign lamp, a recessed sign lamp, and a recessed sign lamp device.

[0002]

2. Description of the Related Art A marker lamp for projecting various colors of sign light is buried under a road surface to indicate a guide sign for an airway runway or taxiway.

[0003] The recessed marker lights buried under the road surface are as follows:
It is stipulated to have a light distribution characteristic having a predetermined light projection range and a light amount.

[0004] An outline of the recessed marker light will be described with reference to a sectional view of FIG. The recessed marker light 100 includes a bottomed cylindrical base 101 buried in a road surface G, and a substantially disc-shaped marker lamp body 102 housed and fixed inside the cylinder of the base 101.
The marker lamp body 102 is divided into an upper lamp body 103 and a lower lamp body 104, and a mounting hole 105 is formed in a part of a peripheral edge of an upper surface of the upper lamp body 103.
Is formed with a flange portion 106 on the outer peripheral portion thereof.

On the other hand, an inner peripheral step 107 on which the flange 106 is mounted is formed on the inner surface of the base 101. A mounting hole 108 into which a bolt member is inserted is formed in the inner peripheral step portion 107, and a mounting hole 105 of the upper lamp body 103 and a flange portion 106 of the lower lamp body 104 are formed inside the base 101. A through-hole 109 through which the bolt member inserted into the mounting hole 108 of the peripheral step portion 107 extends is formed, and a nut is screwed into the bolt member extending from the through-hole 109.

That is, the mounting hole 108 of the base 101
And a fixing hole 105 of the upper lamp body 103 and a through hole 109 of the flange portion 106 of the lower lamp body 104, which are mounted and fixed with a bolt member and a nut. At this time, an O-ring 110 is interposed between the base 101 and the lower lamp 104 and between the upper lamp 103 and the lower lamp 104 in a watertight manner.

The upper surface of the upper lamp 103 of the marker lamp 102 has a flat portion 111 and an inclined surface 112.
The outer peripheral edge of the base 12 is formed so as to have the same plane size as the distal end portion of the base 101 buried in the road surface G.

That is, the flat portion 11 of the upper lamp body 103
1 is disposed so as to protrude from the road surface G by the inclination angle of the inclined surface 112, and the inclined surface 112 allows the upper lamp body 103 to be stomped on wheels or the like.

Further, an opening groove 113 for guiding light is formed, which is inclined at a predetermined height and width from the inner surface to the outer surface of the upper lamp body 103 and in which an optical lens system described later is disposed. The groove 113 communicates with an internal space 114 in which a marker lamp described later is arranged. Opening groove 1
A prism 115 is inserted and arranged in water-tight, and a color filter 116 is arranged and fixed on a light incident surface of the prism 115. The internal space 114 includes a bulb 117 for emitting a marker light, a reflecting surface 118 disposed behind the bulb 117 to reflect the upper half of the marker light emitted from the bulb 117, and a lower half for reflecting the lower half. A sign lamp 120 formed integrally with the reflection surface 119 is attached and arranged.

In the recessed marker lamp 100 having such a configuration, the marker light emitted from the marker lamp 120 by the lighting power supply from the lighting power supply unit (not shown) to the marker lamp 120 is Upper and lower half reflective surface 1
The light reflected by the color filters 18 and 119 is converted into a predetermined color light by the color filter 116, and a predetermined optical axis X′-X ′ centered on the bulb 117 of the marker lamp 120 by the prism 115. The light path is regulated by the marker light having the emission range and the angle of the light, and the light is projected from the aperture groove 113.

The marker light projected from the opening groove 113 is regulated to have the light distribution characteristics shown in FIG. In FIG. 15, the horizontal axis represents the horizontal angle (degrees), the vertical axis represents the vertical angle (degrees), the range m represents the main beam range, and the range s represents the 10% beam range. This light distribution characteristic regulation requires that the minimum average luminous intensity be 200 Cd and the minimum luminous intensity be 100 Cd within the angle range (horizontal angle ± 10 °, vertical angle 1 to 13 °) surrounded by the main light column range m. I have. Further, it is required that the minimum luminous intensity in the angle range (horizontal angle ± 16 °, vertical angle 0 to 13 °) surrounded by the 10% light column range s be 20 Cd.

For this reason, in order to satisfy the light distribution characteristics, the marker lamp 120 is configured as shown in FIG.

The marker lamp 120 has an upper half reflecting surface 118 and a lower half reflecting surface 11
9 are disposed. Upper and lower half reflecting surfaces 118 and 119 of this reflector 121
Has facets 118a to 118n and 119a to 119n having a plurality of different free curves in the horizontal direction in the drawing,
Each of the facets 118a to 118n forms an upper half reflecting surface 118, and the facets 119a to 119n
Form the lower half reflecting surface 119. Further, the upper half reflecting surface 118 and the lower half reflecting surface 119 are centered on the central axis of the bulb 117 via the prism 115 so that the sign light is projected within a horizontal angle required by the light distribution characteristics. It is formed in the shape of an arc. Also, within a vertical angle required for the light distribution characteristics, the marker light reflected by the upper half reflecting surface 118 so as to project through the prism 115 has a reflecting surface such that it does not cross the center axis, The marker light reflected by the lower half reflecting surface 119 is integrally formed so as to have a reflecting surface that intersects on the central axis to generate the reflector 121.

Further, a connection lead wire 122 connected to a lighting power supply source (not shown) of a filament housed inside the bulb of the light bulb 117 is provided with a base integrally formed and extended behind the reflector 121. It is embedded and fixed in a portion 123 with a cement material or the like, and extends from one end of the base 123.

[0015]

In a conventional recessed marker lamp, the marker light reflected by the upper and lower half reflecting surfaces constituting the lamp for the marker lamp is changed in optical path by a prism, and has a light distribution characteristic. Projected above a vertical angle. Therefore, in the combined light distribution characteristic reflected by the upper and lower half reflecting surfaces, the luminous intensity at the position where the vertical angle is high is high, and the luminous intensity at the low angle decreases. Therefore, it is necessary to select and prepare a prism having a refraction angle that satisfies the light distribution characteristics according to the light distribution characteristics of the marker lamp.

For this reason, the marker light projected from the marker lamp satisfies the light distribution characteristics above and below the optical axis without changing and correcting the refraction angle of the prism.
It is required that the light distribution characteristics do not change due to a shift in the mounting position of the marker lamp.

According to the present invention, there is provided a lamp for a beacon lamp capable of obtaining a light distribution characteristic with a fixed angle of refraction of a prism for changing an optical path of beacon light projected from a recessed beacon. It is an object of the present invention to provide an embedded marker light and an embedded marker light device.

[0018]

According to the first aspect of the present invention, there is provided a lamp for a sign light, comprising: a bulb and a bulb sealed inside the bulb and provided with a filament; the bulb being disposed inside, and light emitted from the bulb. And a reflector comprising a plurality of facets having a curved surface for generating a light distribution pattern of different reflected light by reflecting light from the filament generated by the plurality of facets. It is characterized in that it passes through the optical axis of the entire reflecting surface of the reflector.

In the present invention and each of the following inventions, definitions and technical meanings of terms are as follows.

The marker lamp of the present invention is most suitable for an embedded marker lamp, but is not limited to this, and can be applied to an exposure lamp. Further, the embedded marker light is not limited to uses for aviation, road use, and the like.

Light bulbs are small, high light output halogen bulbs,
If a bulb filled with krypton or xenon gas is used and a relatively small and high light output is not required, other lamps can be used.

The reflector reflects the light projected from the bulb and generates illumination light having a predetermined light distribution pattern, and is integrally formed by a plurality of facets.

The reflector preferably has a reflective film having a high reflectance applied to the inner surface of the substrate. However, when the substrate itself is made of a high-reflectance material such as high-purity aluminum, the reflective film is preferably used. Need not be applied. Note that a glass material or a metal material is preferable as the base.

The light distribution pattern is a reflection light distribution pattern generated by each of the facets, and forms a curved surface of each facet so as to pass through the optical axis of the reflected light of the entire reflector, which is a group of facets. Further, the light distribution pattern of each facet is based on the illuminance of the mesh for every one degree in the vertical and horizontal directions of the projection range of the projection light at a position separated by a predetermined distance from the light source as a light bulb and the reflector, and determines the maximum illuminance of the projection range. As a criterion, the ratio between the illuminance of each mesh and the maximum illuminance is calculated, and 25% of the maximum illuminance is calculated.
The range of the mesh having the above illuminance is defined as the light distribution pattern. In this light distribution pattern measurement, a light distribution pattern obtained by measuring reflected light of each facet of the reflector is used, excluding direct light from a light bulb as a light source.

The optical axis indicates the center of the vertical and horizontal optical axes within a predetermined range of the light reflected by the reflector, and is the optical axis of the light projected from the light source and the light refracted by a prism or the like. Is used.

That is, the light distribution pattern 5 m away from the filament of the reflected light of each facet passes through the optical axis with respect to the optical axis of the predetermined light distribution pattern of the reflected light of the entire reflector. The combined light distribution pattern of the individual facets is such that a desired light distribution pattern of the entire reflector is obtained.

With the marker lamp of the present invention, illumination light of a desired light distribution pattern can be ensured by controlling the curved surface of each facet.

According to a second aspect of the present invention, there is provided the sign lamp according to the first aspect, wherein the reflector has an upper half reflecting surface and a lower half reflecting surface centering on the position where the bulb is disposed. It is characterized by.

The facet constituting the reflector is divided into an upper half reflecting surface and a lower half reflecting surface, and the light projected from the light bulb reflects reflected light reflected by the upper half reflecting surface into a desired light distribution pattern. Through the optical axis of, the light projected mainly on the lower half, and the reflected light reflected on the lower half reflecting surface is projected mainly on the upper half through the optical axis of the desired light distribution pattern. Thus, reflected light having a desired light distribution pattern can be obtained.

At the boundary between each facet of the upper half reflecting surface and the lower half reflecting surface, a step is provided in which the lower half reflecting surface is recessed from the upper half reflecting surface, so that the vertical direction of the light distribution pattern of the reflected light is provided. Can also be controlled.

According to a third aspect of the present invention, there is provided the sign lamp according to the first or second aspect, wherein each adjacent facet of the plurality of facets has a boundary formed by joining different curved surfaces. And

Each of the facets is formed by a curved surface, and a boundary between adjacent facets is formed by joining curved surfaces.

The recessed marker lamp of the invention according to a fourth aspect of the present invention has a thick portion having an inclined surface extending obliquely upward from the upper surface of the opening groove for guiding light and an internal space communicating with the opening groove. An optical lens system including a prism for regulating a light guiding direction, which is disposed in a watertight manner between an opening groove of the lamp body and an internal space; and opposing a light incident surface of the optical lens system; And the lamp for a sign lamp according to any one of claims 1 to 3, which is disposed in the interior space of the lamp body with the upper half reflecting surface of the reflector facing upward.

The recessed marker light of the present invention is used for aviation.
For example, the present invention can be applied to a taxiway centerline lamp, a stop line lamp, and the like.

In this type of embedded marker light, there is a need to irradiate light at a small elevation angle with respect to the road surface (a desired range centered at 4.5 degrees for aviation). Further, since it is difficult to set the optical axis of the light source disposed in the lamp body embedded in the road surface at a small angle with respect to the road surface, light projected from the light source is refracted in the road surface direction by the prism. The regulation of the light deriving direction means that the projection light is regulated in a predetermined direction as described above.

With this arrangement, the reflector of the marker lamp is arranged in the interior space of the lamp body such that the upper half reflecting surface of the reflector faces upward, and the direct and reflected light projected from the marker lamp is refracted by the prism. By projecting illumination light at a desired elevation angle, the thickness and shape of the lamp body in the thickness direction can be reduced, and the embedding work on the road surface becomes easy.

According to a fifth aspect of the present invention, there is provided a recessed marker light device, comprising: the recessed marker light according to the fourth aspect; and a storage portion for storing a peripheral portion of the recessed marker light body. A base to be embedded below; and fixing means for detachably and water-tightly fixing the embedded marker lamp to the base.

The base of the present invention is buried in advance by boring a road surface, and electric wiring is set up from underground and installed in the base. The buried marker lamp is housed in this base and fixed with fixing means such as bolts and nuts.

By storing and fixing the recessed type marker lamp in a base buried in the road surface, during repair inspection such as replacement of a sign lamp, the entire marker lamp is removed from the base, The replacement of a new lamp for a marker light or the replacement of a lamp body for a marker lamp can be performed with simple work mainly consisting only of release and tightening of bolts and nuts, and repair and inspection can be performed in a short time.

[0040]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a sign lamp according to an embodiment of the present invention; FIG. FIG. 1 shows an embodiment of a marker lamp according to the present invention. FIG. 1 (a) is a front view, FIG. 1 (b) is a sectional view, and FIG. FIG. 3 is an explanatory view for explaining an optical path of light. FIG. 3 is an explanatory view for explaining the configuration of the marker lamp of the present invention. FIG. 3 (a) is an explanatory view of the marker lamp viewed from the front, and FIG. ) Is a cross-sectional explanatory view from the side, FIG. 4 is an explanatory view for explaining a light distribution pattern of light reflected from each facet of the upper half reflecting surface of the sign lamp, and FIG. It is explanatory drawing explaining the light distribution pattern of the reflected light from each facet of a half reflective surface.

As shown in FIG. 1, the marker lamp 10 is a light bulb 11 having a filament sealed in a bulb.
A reflector which is disposed behind the light bulb 11 and which is fixed at the center thereof and which has a substantially arc-shaped upper and lower circular edge horizontally cut off to reflect light emitted from the light bulb 11 12 and a cylindrical portion 13 extending to the back surface of the reflector 12 to attach and fix a base portion of the light bulb 11 and lead out a lead wire for supplying power to the filament. , The light bulb 1 based on the central portion 14 where the light bulb 11 is disposed.
An upper half reflecting surface 15 and a lower half reflecting surface 16 for reflecting the light emitted from 1 are formed. The upper half reflecting surface 15
And the lower half reflecting surface 16 are provided with a plurality of facets 15a to 15e.
And 16a-16e, and each facet 15a-1
5e, 16a to 16e each have a reflection surface of a different free-form surface, and each of these facets 15a to 15e, 16
The free curves a to 16e are set so as to obtain the sign light having a predetermined luminous intensity mainly with respect to the horizontal angle of the light distribution characteristics shown in FIG.

The reflector 12 and the cylindrical portion 13 are integrally formed, and the light bulb 11 is
Is fixed to the center portion of the base with a cement material or the like.

The operation of radiating light emitted from the marker lamp 10 having such a configuration will be described with reference to FIG. Note that the marker lamp 10 in the figure shows only the bulb 11 and the upper half reflecting surface 15 and the lower half reflecting surface 16 of the reflector 12, and the marker lamp 10 is embedded in the road surface G. An example used for a marker light is used, and a prism 1 for regulating an optical path is provided in front of the lamp 10 for the marker light.
7 are arranged.

The upper half reflecting surface 15 reflects the reflected light L of the light radiated from the light bulb 11 so as to pass through an optical path XX centered on the light bulb 11, and the lower half reflecting surface 1
6 reflects the reflected light M of the light emitted from the bulb 11 so as to pass through the optical path XX. The reflected lights L and M reflected by the upper and lower half reflecting surfaces 15 and 16 are projected on the optical path regulated by the prism 17.

That is, facets 15a to 15e and 16a to 16e of the upper half reflecting surface 15 and the lower half reflecting surface 16, respectively.
The reflected light of e passes through the central optical path XX.

Note that the optical path XX and the reflected lights L and M are
The light distribution pattern of each facet, which will be described later, does not always coincide with each other. In order to explain the direction of reflection by the upper and lower half reflecting surfaces 15, 16, the light path XX and the reflected light L,
M is used.

As shown in FIG. 3, each of the facet lamps 15 of the
FIGS. 4 and 5 show the measurement results of the light distribution pattern of each facet when the shapes and dimensions of a to 15e and 16a to 16e were set.
This will be described with reference to FIG.

As described above, the marker lamp 10 is regulated to have the light distribution characteristic shown in FIG. 15, and in order to obtain this light distribution characteristic, the reflector 12 is required.
The light distribution patterns reflected by the respective facets 15a to 15e and 16a to 16e need to be different from each other, and the combined light distribution pattern based on the reflection light distribution patterns of these individual facets must satisfy the light distribution specification.

FIGS. 4 and 5 show the light distribution pattern of the reflected light for each facet at a measurement distance position 20 times the specified light source size as the light distribution pattern measurement conditions. It is. The light distribution pattern of each facet excludes direct light from a light bulb, and is based on a vertical center H at a vertical angle of 4.5 degrees of an optical axis reflected from the reflector 12 and a horizontal center V. The illuminance of each mesh is measured vertically and horizontally, and patterning is performed by ratio comparison based on the maximum luminous intensity in the light distribution pattern of each facet.

The areas A to C shown in this light distribution pattern are:
In the area indicating the comparison ratio with the maximum luminous intensity, the maximum luminous intensity of 7
A is a range having a luminous intensity of 5% to 100%, and 5 is a maximum luminous intensity.
B is a range having a luminous intensity of 0% to 75%, and 25 is a maximum luminous intensity.
C is the range having a luminous intensity of 50% to 25% of the maximum luminous intensity.
The range having the following luminous intensity is indicated by D and is shown at 25% intervals. In addition, the maximum luminous intensity of this light distribution pattern is 2
An area having a luminous intensity of 5% or more is an effective light distribution pattern range of each facet.

FIG. 4 shows reflected light distribution patterns respectively reflected by facets 15a to 15e which are upper half reflecting surfaces of the reflector viewed from the front of the marker lamp of FIG. 3 (a). FIG. 5 shows reflected light distribution patterns respectively reflected by facets 16a to 16e, which are lower half reflecting surfaces of the reflector, as viewed from the front of the marker lamp of FIG. 3A.

The facets 15a to 15e and 16a to
Each of the facets 15a to 15e and 16e is formed as shown in FIGS. 4 and 5 by being arranged so as to pass through the optical path XX of the light distribution characteristic of the reflector 12.
The light distribution patterns a to 16e have a vertical optical axis V and a horizontal optical axis H.
And the light distribution pattern obtained by combining the light distribution patterns of these facets can satisfy the above-described light distribution characteristics (see FIG. 15).

The facets 15a to 15e and 1
6a to 16e have smooth curved surfaces, and the boundary between adjacent facets has a shape in which different curved surfaces are joined. For example, when there is a problem with the light distribution pattern of the facet 15a, the problem can be solved by adjusting and resetting the curved surface of the facet 15a, and there is no need to consider the scattered light from the adjacent facet. It will be easier.

In general, the center of the vertical angle of the light distribution characteristic of an aeronautical signage lamp is required to be 4.5 degrees or 5.5 degrees, which is a very low angle with respect to the road surface. With respect to this low required vertical angle, the vertical angle of 4.5 degrees and 5.5 degrees can be accommodated without changing the reflection characteristics of the reflector 12 and the characteristics of the optical path regulating prism 17 as in the related art. By generating the lamp 10 for a marker light, the structural shape and characteristic conditions of various marker lamp devices that house the lamp 10 for a marker lamp, including the prism 17 for regulating the optical path, are the same,
This can be achieved by replacing only the sign lamp 10 corresponding to the vertical center angle.

Next, a modification of the first embodiment of the marker lamp of the present invention will be described with reference to FIG. The same parts as those in FIG. 1 are denoted by the same reference numerals, and detailed description is omitted.

A plurality of facets 15a to 15e, 16a to 1 formed on the upper and lower half reflecting surfaces 15, 16
The light distribution generated by the reflected light reflected at 6e is the same as that shown in FIG.
Among the light distribution characteristics shown in FIG. 5, when the luminous intensity of the intersection region between a specific horizontal angle and a vertical angle is greater than or less than a prescribed luminous intensity, a facet 15a that reflects light projected on the intersection region It is necessary to change the free curve of the corresponding facet from 15e, 16a〜16e. However, the molding of the facets 15a to 15e and 16a to 16e is generally performed by a mold molding method, and the change of the free curve of a specific facet requires a lot of time, and it is difficult to select the optimum free curve. It is.

Therefore, when the luminous intensity is excessive or deficient in the intersection area of the light distribution characteristics, the light reflected by the corresponding facet of the luminous intensity excessive or deficient intersection area, for example, the facet 15a, becomes the light of the corresponding intersection area. Then, the reflection surface of the facet 15a is formed as a fine point-like non-reflection surface 18a, and the reflection amount of light emitted from the bulb 11 is changed by the fine point-like non-reflection surface 18a. Adjustment of the luminous intensity of the area.

That is, based on the result of the light distribution characteristics of the marker lamp 10, the facets 15a to 15a of the reflector 12 are formed.
By forming at least one of the reflecting surfaces 15e, 16a to 16e into a non-reflective surface 18a in the form of fine dots, the marker lamp 10 having a predetermined light distribution characteristic can be obtained simply and reliably.

The non-reflective surface 18a in the form of fine dots is
It is also possible to use a fine circular non-reflective surface 18b or a fine angular non-reflective surface 18c. Thus, it is possible to generate the marker lamp 10 having the optimum light distribution characteristics.

Next, a second embodiment of the present invention will be described.
This will be described with reference to FIG. FIG. 7A is a cross-sectional view of the upper lamp body of the recessed marker light, and FIG. 7B is a perspective view of the upper lamp body viewed from the internal space. The same parts as those in FIG. 14 are denoted by the same reference numerals, and detailed description is omitted.

The second embodiment is different from the recessed marker 10 in which the marker lamp 120 (or 10) is housed and arranged.
The prism 115 for regulating the optical path and the color filter 11 arranged in the opening groove 113 formed in the upper lamp body 103
6 relates to a recessed marker light 102 for fixing the same.

A ceiling 41 extending along the slope of the upper inner surface of the opening groove 113 of the upper lamp body 103 is formed. In the opening groove 113, a prism 115 for regulating an optical path is provided with a light incident surface. It is inserted in a water-tight manner so as to be on the side of the internal space 114 of the upper lamp body 103, and the end of the light exit surface of the prism 115 is positioned and arranged in contact with the ridge 112 a provided in the opening groove 113. A color filter 116 for converting the color of the incident light is disposed on the light incident surface of the prism 115. The optical lens system composed of the prism 115 and the color filter 116
Fixed at 2.

As shown in FIG. 8, the fixed frame 42 includes a filter portion 116a on which the color of the color filter 116 of the optical lens system is deposited and a color non-deposited portion 116b. Vapor deposition section 116b
Has a substantially U-shaped side shape formed by a frame portion 42a that abuts the frame 42a and a fixing piece portion 42b extending from the frame portion 42a. The fixing piece 42b is fixed to the bottom surface of the upper lamp body 103 with a screw or the like.

On the other hand, the side of the frame portion 42a facing the fixed piece portion 42b is formed on the inner surface of the ceiling portion 41 extending along the slope of the upper inner surface of the opening groove 113 of the upper lamp body 103. It is fixed by a fixing piece 43 which is brought into contact with the upper side surface of the frame portion 42a and is attached and fixed to the inner inclined surface of the ceiling portion 41. That is, the fixed frame 42 is fixed to the lower surface of the upper lamp body 103 at the fixed side portion 42b.
The upper end of “a” is fixed by a fixing piece 43 attached to the inclined surface of the ceiling 41 of the upper lamp body 103.

As a result, since the plane of the upper side of the fixing frame 42 and the end of the fixing piece 43 are arranged at right angles,
The optical lens system can be reliably fixed and maintained even when vibration is applied along the opening inclination of the aperture groove 113. Also, the reinforcing portion 41 extending into the internal space 114 of the upper lamp body 103 is provided.
Thereby, the strength against the load applied to the flat portion 111 on the surface of the upper lamp body 103 can be increased, and the deformation and damage due to the load can be prevented.

Further, when various colors are vapor-deposited or applied to the color filter 116, some non-evaporated or unapplied portions of the color occur in the peripheral portion. The light radiated from 120 (10) leaks, and the light that has not been color-converted is radiated. For this reason, by covering the undeposited or uncoated portion with the frame portion 42a of the fixed frame 42, it is possible to both prevent the light leakage and mount and fix the color filter 116.

Next, a modification of the second embodiment is shown in FIG.
This will be described with reference to FIG. A modification of the second embodiment is that the color filter 1 is fixed in the fixed frame 42 of the color filter 116.
16 can be mounted more easily.

The fixed frame 42 'is provided with an opening 42c through which the color deposition or application surface 116a of the color filter 116 is exposed.
6, a lower end holding piece 42f for holding the lower end of the color filter 116, and a left and right end of the color filter 116 are slidably fitted on the left and right sides of the opening 42c. U-shaped pair of side end fixing pieces 42d, 4
2d is formed. The lower end holding piece 42f has a central portion formed of an elastic body that is curved with respect to the opening 42C. When the color filter 116 is sandwiched between the lower end holding piece 42f and the upper end holding piece 42e, the lower end holding piece 42f has a lower end. Holding piece 4
Vertical movement and holding are restricted by the curved elastic portion 2c. The lateral movement of the color filter 116 is restricted by being fitted to the end fixing pieces 42d.

From the upper end of the upper end holding piece 42e of the fixed frame 42 ', a fixed piece 42b' attached to and fixed to the upper lamp body 103 extends.
By fixing b ′ to the upper lamp body with a fixing means such as a screw, the color filter 116 can be fixed to the light incident surface side of the prism 115.

Next, a modification of the second embodiment will be described with reference to FIG. The modification shown in FIG. 10 relates to reinforcement of the mechanical strength of the lamp body of the recessed marker light.

When the recessed indicator light 110 is buried in an aeronautical runway or taxiway, a load of several tens tons or more is applied to an aircraft or the like passing through the recessed indicator light 110. At this time, a sign lamp 120 (10) is provided on the inner surface of the flat portion 111 on the upper surface of the upper lamp body 103 of the recessed sign light 110.
Is provided, the flat portion 111 may be damaged and deformed due to excessive load.

Therefore, the lower surface of the flat portion 111 is reinforced and the sign lamp 12 is inserted into the internal space 114.
It is required to secure a storage arrangement space of 0 (10). For this reason, as shown in FIGS. 10A and 10B, the reinforcing member 61 having a rectangular shape is attached to the flat portion 1 of the upper lamp body 103.
11, that is, on the upper surface of the internal space 114 for reinforcement.

The reinforcing member 61 can have a substantially rectangular shape as shown in FIG. Further, as shown in FIG. 11, a substantially concave reinforcing member 62 may be formed in the internal space 114 of the upper lamp body 103 to reinforce the flat portion 111.

Next, a third embodiment will be described with reference to FIG. In the second embodiment, the description has been given of the prevention of breakage and deformation of the upper lamp body 103 by the weight applied to the recessed marker 100. However, the weight applied to the recessed marker 100 is determined by the indicator lamp 120 (10). In the form of vibration, the external vibration applied to the embedded marker lamp causes the filament of the marker lamp 120 (10) to vibrate, thereby causing deformation such as deformation or disconnection of the filament.
In particular, when the filament is deformed, the luminous intensity emitted changes, and a problem arises that a predetermined light distribution characteristic cannot be obtained. This third
The embodiment of the present invention is a lamp holder suitable for preventing filament deformation of the sign lamp 120 (10).

As shown in FIG. 1, the marker lamp 1
Numeral 0 is integrally formed with the reflector 12, and a connection lead wire connected to the filament of the light bulb 11 is embedded therein with a cement material or the like. This cylindrical part 1
3 to the upper half reflecting surface 15 of the reflector 12
12 and the lower half reflecting surface 16 is set to the lower side as shown in FIG.
Plane portions 13a and 13b (the flat portion 13b is not shown in the drawing because of the relationship in the drawing) are formed in the cylindrical portion 13 in the vertical direction of the vertical portions 5 and 16.

One of the fixtures 7 for the indicator lamp 10
1 is a plane portion 13a, 13b of the lamp 10 for a sign lamp.
A lamp holding portion 72 for a U-shaped marker lamp is formed so as to fit and hold the lamp. The marker lamp holding portion 72 is formed of an elastic member and is inserted so that the flat portions 13a and 13b of the cylindrical portion 13 of the marker lamp 10 are positioned so that the upper half reflecting surface 15 of the reflector is located above. Thus, the marker lamp 10 can be easily and firmly attached and detached.

At the lower end of the lamp holding portion 72 for a marker lamp, a fixing portion 73 for attachment to a housing or the like is provided. The attachment fixing portion 73 is attached and fixed to the housing via an elastic piece 74. The elastic piece 74 is provided when the fixture 71 vibrates in the up, down, front, back, left and right directions, and the sign lamp 10 held by the sign lamp holding part 72 of the fixture 71 vibrates. Vibrates to absorb the vibration.

Thus, when vibration is applied to the embedded marker lamp from outside, the lamp holder 71 for marker lamp absorbs the vibration and protects the filament from unnecessary vibration, thereby preventing the filament from being deformed. It becomes possible.

In addition to the U-shaped shape, the lamp holding portion 72 for the marker light has flat portions 13a, 13b of the cylindrical portion 13.
It is obvious that the forked shape may be used.

Next, a modification of the third embodiment is shown in FIG.
3 will be described. This modification relates to a lamp mounting tool whose mounting operation is simple.

The marker lamp holding member 75 has an opening similar in shape to the opening on which the reflected light from the reflector 12 of the marker lamp 10 projects, and a reflector contact portion with which the tip of the reflector 12 contacts. 76 is formed. The reflector contact portion 76 is formed so as to have an inclined surface substantially the same as the light incident surface of the color filter 116 or the prism 115, but the inclined angle is different if a desired light distribution is obtained. It doesn't matter. A lower half reflecting surface holding piece 77 for holding the lower end of the lower half reflecting surface 16 of the reflector 12 is provided below the reflector contact portion 76.
Is provided. Left and right side plates 79, 79 extending from the reflector contact portion 76 and being bent are provided, and the left and right side plates 79, 79 regulate the horizontal position of the marker lamp 10. The left and right side plates 79, 79 have a substantially trapezoidal shape, and are provided with fixed pieces 78, 78 extending from the lower end and bending.
Through the screw holes provided in the buried marker light 102
Is fixed to a predetermined position of the lower light body 104. On the rear end side of the left and right side plates 79, 79 (on the side facing the reflector contact portion 76), substantially L-shaped elastic members 80, 80 are provided. The elastic members 80, 80
(B) As shown in FIG.
The elastic member 8 presses the back of the elastic member 8 elastically.
The marker lamp 10 is sandwiched and held and fixed between 0, 80 and the reflector contact portion 76.

As a result, the lamp holder 7 for the marker lamp can be used.
5 is previously mounted and fixed at a predetermined position in the lower lamp body 104 of the buried marker light body 102, and when the buried marker light body is buried, the marker lamp 10 is attached to the marker lamp holder 75. By simply inserting and interposing between the reflector contact portion 76 and the elastic members 78, 78, the mounting and fixing of the marker lamp 10 to the lamp body can be easily and reliably performed.

[0083]

According to the present invention, the reflected light distribution pattern generated by a plurality of facets having a curved surface constituting a reflector for reflecting the light projected from the bulb is provided. By setting the reflector so as to pass through the optical axis of the total reflection light distribution, it is possible to satisfy the light distribution characteristics required for a sign lamp which is a light source having a small shape.

Further, since each facet is formed with a smooth curved surface, and the boundary between adjacent facets is formed by joining different curved surfaces, it is necessary to consider the scattering and reflection of light at the boundary between adjacent facets. In addition, it is possible to set a curved surface on which a light distribution pattern required by each facet is obtained.

As a result, a marker lamp having a light distribution pattern satisfying the light distribution characteristics can be easily manufactured and provided simply by setting the curved surface of each facet for each light distribution characteristic to be obtained. ing.

The buried marker lamp according to the fourth aspect of the present invention is disposed in the interior space of the lamp body such that the upper half reflecting surface of the reflector of the marker lamp is on the upper side. The reflected light is refracted by the prism to project the illumination light at the desired elevation angle, which makes it possible to reduce the thickness and shape of the lamp body in the thickness direction, and facilitates the work of embedding on the road surface. Have.

According to a fifth aspect of the present invention, the base is buried by drilling the road surface in advance, and the electric wiring is set up from the ground and installed in the base. The buried marker lamp is housed in this base and fixed with fixing means such as bolts and nuts.

By storing and fixing the recessed marker light in a base buried in the road surface, during repair inspection such as replacement of a lamp for a marker light, the entire marker lamp is removed from the base. Replacement with a new marker lamp or replacement with a marker lamp can be carried out with simple work mainly consisting only of releasing and tightening bolts and nuts, and has the effect that repairs and inspections can be performed in a short time. .

[Brief description of the drawings]

FIG. 1 shows an embodiment of a marker lamp according to the present invention, wherein FIG. 1 (a) is a plan view and FIG. 1 (b) is a cross-sectional view.

FIG. 2 is an explanatory diagram illustrating an example of a reflected light path of the marker lamp according to the present invention.

3A and 3B are explanatory views illustrating the configuration of a marker lamp according to the present invention. FIG. 3A is an explanatory view of the marker lamp viewed from the back, and FIG. FIG.

FIG. 4 is an explanatory diagram for explaining a light distribution pattern of light reflected from each facet of an upper half reflecting surface of the marker lamp of the present invention.

FIG. 5 is an explanatory diagram illustrating a light distribution pattern of light reflected from each facet of a lower half reflecting surface of the marker lamp of the present invention.

FIG. 6 is a front view showing a modification of the first embodiment of the present invention.

FIGS. 7A and 7B show an embodiment of an embedded marker lamp according to the present invention, wherein FIG. 4A is a sectional view and FIG. 4B is a perspective view.

FIG. 8 is a perspective view showing an embodiment of a fixing frame for fixing an optical lens system of the embedded marker lamp according to the present invention.

9A and 9B show another embodiment of a fixing frame for fixing an optical lens of a buried marker light according to the present invention, and FIG.
9 is a perspective view, and FIG. 9B is a sectional view.

10A and 10B show a reinforced state of the embedded marker lamp according to the present invention, wherein FIG. 10A is a perspective view, FIG. 10B is a plan view,
FIG. 10C is a plan view of a modified example, and FIG.
Sectional drawing of the YY cutting line of (a).

11 (a) and 11 (b) show a modified example of the buried marker light according to the present invention in a reinforced state, wherein FIG. 11 (a) is a perspective view, FIG. 11 (b) is a plan view, and FIG. Sectional drawing of the Y'-Y 'cutting line of (a).

FIG. 12 is a perspective view showing an embodiment of a lamp holder for a recessed marker light according to the present invention.

FIG. 13 shows another embodiment of the lamp holder for a recessed-type marker lamp according to the present invention, and FIG. 13 (a) is a perspective view and FIG.
(B) is sectional drawing which shows the state which hold | maintained the lamp for marker lights.

FIG. 14 is a cross-sectional view showing a configuration of a conventional embedded marker lamp.

FIG. 15 is a light distribution characteristic diagram showing a standard of a light distribution characteristic of the embedded marker light.

FIG. 16 is a perspective view showing a configuration of a conventional sign lamp.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Lamp for marker lights 11 ... Light bulb 12 ... Reflector 13 ... Cylindrical part 14 ... Central part 15 ... Upper half reflective surface 15a-15e ... Facet 16 ... Lower half reflective surface 16a-16e ... Facet 17 ... Prism 18a-18c ... Non Reflecting surface 41 ... Ceiling part 42 ... Optical lens system fixing frame 43 ... Fixing piece 61 ... Reinforcing member 62 ... Reinforcing frame 71 ... Lamp holder for sign lamp 72 ... Nipping part 73 ... Mounting fixing part 74 ... Elastic piece

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Junichi Nakajima 4-3-1 Higashishinagawa, Shinagawa-ku, Tokyo Inside Toshiba Lighting & Technology Corporation (72) Inventor Katsuyuki Ide 4-3-1 Higashishinagawa, Shinagawa-ku, Tokyo Toshiba Lighting & Technology Corporation (72) Inventor Masayuki Kobayashi 4-3-1 Higashi-Shinagawa, Shinagawa-ku, Tokyo Toshiba Lighting-Tech Corporation (72) Inventor Amane Shukai 4-3-1 Higashishinagawa, Shinagawa-ku, Tokyo Toshiba Inside LiteTech Co., Ltd. (72) Inventor Susumu Kobe Inside Toshiba Litetech Co., Ltd. 4-3-1 Higashishinagawa, Shinagawa-ku, Tokyo

Claims (5)

[Claims] 1. A bulb having a bulb and a filament enclosed within the bulb, the bulb including a bulb disposed therein and reflecting light emitted from the bulb to produce a different light distribution pattern of reflected light. And a reflector composed of a plurality of facets having a light distribution pattern 5 m away from the filament generated by the plurality of facets so as to pass through the optical axis of the entire reflection surface of the reflector. Characteristic lamps for sign lights. 2. The sign lamp according to claim 1, wherein the reflector has an upper half reflecting surface and a lower half reflecting surface centered on a position where the light bulb is disposed. 3. The lamp according to claim 1, wherein each of the adjacent facets of the plurality of facets has a boundary formed by joining different curved surfaces. 4. A lamp body having a thick portion formed of an inclined surface extending obliquely upward from an upper surface of an opening groove for guiding light and an internal space communicating with the opening groove; and an opening groove of the lamp body. An optical lens system including a prism for restricting a light exit direction, which is disposed in a watertight manner between the internal lens and the internal space; and an upper half reflecting surface facing the light incident surface of the optical lens system and an upper half of the reflector. And a lamp for a marker lamp according to any one of claims 1 to 3, which is disposed in an internal space of said lamp body. 5. The recessed marker light according to claim 4, a base having a storage portion for storing a peripheral portion of the recessed marker lamp body, and being buried under a road surface; Fixing means for detachably fixing the marker lamp body to the base in a watertight manner.