JP2003338204A - Embedded marker lamp - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an embedded marker lamp which can correspond to various types different in light distribution property and luminous intensity by using common parts. <P>SOLUTION: The embedded marker lamp 11 comprises a lamp body 1 equipped with a light guiding groove 1a provided on an upper surface, an internal space 1E communicating with the light guiding groove 1a and a prism 1e for optical path control liquid-tightly provided between the light guiding groove 1a and the internal space 1E, an optical unit equipped with a lamp 2a and a reflecting mirror 2b for reflecting light emitted from the lamp 2a toward the prism 1e, a base plate 3 for supporting the optical unit 2 to arrange the optical unit 2 at a position facing the prism 1e within the lamp body 1, and a retroreflection layer 4 formed on the base plate 3 so as to retroreflect light incident on the base plate 3 from the lamp 2a and the reflecting mirror 2b. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an embedded marker light used as a marker light for an aircraft pilot at an airport or on a road.

[0002]

2. Description of the Related Art Implantable type indicator lights have a limited projecting height above the ground and a limited depth of burial because they do not give a great impact to vehicles passing over them. However, the internal volume is limited, and it is necessary to adopt a closed structure in order to prevent undesired intrusion of rainwater and the like.
Due to various restrictions as described above, the power consumption of the lamp housed inside and the size of the reflecting mirror for directing the light emission of the lamp in a desired direction are also limited to a relatively small size.

On the other hand, the embedded marker lamp has a prescribed light distribution characteristic and luminous intensity as a standard according to its use, and it must satisfy the standard.

[0004] In addition, in the embedded signage for airports,
Standards are diversified depending on the installation location even for the same purpose.

[0005]

However, in the conventional embedded marker lamp, the above-mentioned various restrictions are cleared,
In order to satisfy the standard, it was necessary to individually design according to the application and installation location. Therefore, there is a problem that not only the design is complicated, but also the number of parts is increased, the manufacturing is troublesome, and the cost is eventually increased.

[0006] It is an object of the present invention to provide an embedded marker lamp capable of coping with a variety of components having different light distribution characteristics or different luminous intensities by promoting the sharing of components.

It is another object of the present invention to provide an embedded marker lamp whose luminous intensity is improved by effectively utilizing wasted light by adding a simple structure.

It is still another object of the present invention to provide an embedded marker lamp having a relatively wide-angle light distribution characteristic by adding a simple structure.

It is still another object of the present invention to provide an embedded marker lamp having a relatively narrow light distribution characteristic by adding a simple structure.

[0010]

According to another aspect of the present invention, there is provided a recessed type indicator lamp device including a light guiding groove disposed on an upper surface, an internal space communicating with the light guiding groove, and a light guiding groove and an internal space. A lamp body provided with a prism for controlling an optical path liquid-tightly disposed between; a lamp and an optical unit having a reflecting mirror for reflecting light emitted from the lamp toward the prism; supporting the optical unit A substrate on which the optical unit is arranged at a position facing the prism in the lamp body; and a retroreflective layer formed on the substrate so as to retroreflect light incident on the substrate from the lamp and the reflecting mirror. It has a feature.

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

The embedded signpost of the present invention is applicable to desired applications such as runway centerline lights, taxiway centerline lights and stop line lights for airports and crossing point signs for roads. You can

<Regarding the Lamp> The lamp has a light guide groove,
It has an internal space and a prism. The light lead-out groove is arranged in the upper surface portion exposed on the road surface of the lamp body. The embedded marker lamp of this type needs to irradiate the road surface with light at a small elevation angle, and therefore a light guiding groove is formed. The internal space is generally located so as to be buried in the road surface. Then, it receives an optical unit, which will be described later, and a power receiving portion and the like. The prism is used for refracting the optical path emitted from the optical unit, that is, for restricting the optical path. That is, in the internal space of the lamp body, it is difficult to set the optical axis of the lamp at a small angle with respect to the road surface. Therefore, an intermediate prism is used to refract in the road surface direction. The optical path regulation means regulating the optical path in a predetermined direction as described above, for example.

<About Optical Unit> The optical unit includes at least a lamp and a reflecting mirror. Further, if desired, it is allowed to include a position regulation frame, a pressing piece, an elastic fall-off preventing body, and the like.

As the lamp, a halogen bulb is preferable from the viewpoint of compact high light output, but even an incandescent bulb filled with krypton or xenon gas can obtain a relatively small high light output, and when such a small high light output is not required. Including other incandescent bulbs or light emitting diodes are allowed. Some halogen bulbs have an infrared reflection film formed on the surface of the bulb, but this configuration is suitable for the present invention because of its high luminous efficiency.

It is preferable that the reflecting mirror has a reflection film having a high reflectance applied to the inner surface of the substrate. However, if the substrate itself is made of a substance having a high reflectance, such as high-purity aluminum, a reflection film is additionally applied. You don't have to wear it. Further, glass or metal is suitable as the substrate. Further, in order to reduce the height of the reflecting mirror, it is possible to use a thin reflecting mirror in which the upper and lower sides of a bowl-shaped reflecting mirror whose basic form is a quadratic curved surface are cut in parallel.

If desired, the lamp and the reflecting mirror can be integrated. As a result, the light emission center of the lamp is fixed at the focal position of the reflecting mirror, so that the light distribution is less likely to be disturbed and the light collection efficiency is improved.

Next, in the present invention, although not an essential element of the optical unit, members described below can be included.

1 Position Control Frame The position control frame is a member that controls the mounting positions of the lamp and the reflector, which are integrated so that the optical unit exhibits a predetermined light distribution characteristic, and supports their mounting. When the position regulation frame is used, the optical unit is attached to the substrate described later using a fixing means such as a screw via the position regulation frame so as to be arranged at a position facing the prism. In order to regulate the arrangement positions of the lamp and the reflecting mirror, it is effective to bring the front surface of the reflecting mirror into contact with the back surface of the position regulating frame. In addition, an upright piece can be formed on the position regulation frame so that the reflecting mirror does not move left and right or up and down.

2 Pressing Piece The pressing piece is used to press the reflector from the rear surface thereof so that the front surface is brought into contact with the position regulating frame. By fixing the base end of the pressing piece to the position regulation frame, it becomes easy to unitize.

3 Elastic fall-off prevention body The elastic fall-off prevention body is a means for acting so that the reflecting mirror does not fall off from a predetermined position even when a large impact is applied to the embedded marker light, and is detachable from the position regulation frame. Be attached to. However, it does not matter how it is mounted. Therefore, the elastic fall-off preventing member is made of, for example, a spring-like member or has a spring-like member, and the elasticity thereof is used to press the reflector directly or indirectly elastically when the impact is applied. Prevent falling. Further, any means may be used to detachably attach the elastic fall-off preventing body to the position regulation frame. For example, it is preferable to attach / detach by utilizing the elasticity of the elastic fall-off preventing member because the structure is simplified, but if necessary, a fixing means such as a screw may be used. Also, a barb structure can be used. Further, in order to mount the elastic fall-off preventing body, holes, recesses, hook-shaped portions, etc. can be appropriately formed in the position regulating frame.

<Regarding the Substrate> The substrate is a means for supporting the optical unit and disposing the optical unit at a position facing the prism in the lamp body. Further, the substrate may form a part of the lamp body or may be separate from the lamp body. In the case of a part of the lamp body, it may be either the back plate or the top plate of the lamp body. Further, when it is configured separately from the lamp body, it can be arranged directly on the inner surface of the lamp body, or can be floated through a spacer. Then, it can be fixed to the lamp body with screws, screws, adhesion, or the like.

<Regarding Retroreflective Layer> The retroreflective layer is a means for retroreflecting light that would otherwise not be able to enter the prism and is wasted to the prism. The light distribution characteristics of the lamp and the reflection characteristics of the reflecting mirror are excellent, and all the light emitted from the lamp should be incident on the prism, but when the lamp is actually turned on, it cannot enter the prism. Light is generated. Most of the wasted light illuminates the area around the front of the optical unit that supports the optical unit.

In the present invention, the retroreflective layer is formed centering on the portion of the substrate on which wasted light is likely to enter.
The retroreflective layer is formed by embedding a back surface of a large number of glass beads on the front surface of the reflective film. As the reflection film, it is preferable to use a film mainly composed of a white inorganic adhesive. Further, glass beads having a diameter of about 0.5 to 1.0 mm are suitable.

To form the retroreflective layer, for example, a coating solution prepared by previously dispersing glass beads in a white inorganic adhesive solution may be applied to the surface of the substrate and cured. Then, when the coating liquid is applied, the head portion of the glass beads is projected from the surface of the inorganic adhesive due to the surface tension of the coating liquid, so that when it is solidified, the retroreflective layer is formed. The retroreflective layer may be formed on the substrate either before or after supporting the optical unit. Further, if necessary, a transparent protective film can be formed on the front surface side of the retroreflective layer.

<Regarding Other Configurations> Although not essential to the present invention, by selectively adding the following configurations as desired, the performance of the implantable marker lamp may be improved or its function may be increased. To do.

1 Embedded Type Indicator Light Attachment Device The embedded type indicator light attachment device is means for detachably attaching the embedded type indicator light to the road surface. The embedded marker light attachment device includes a first aspect in which it is directly attached to the base and a second aspect in which it is attached to the base via an adjustment ring.

In the first aspect, the base is configured to receive and fix the embedded marker lamp at the open end thereof. The base is embedded in the road surface to introduce wiring and provide a basis for mounting the recessed marker light. Note that the base may first be configured to be compatible with the piping method. Specifically, a structure that can be connected to a pipe can be provided. It is optimal to use the side surface of the base for connection with the pipe, but the bottom surface may be used if necessary. Also,
The base is open at the top to provide the basis for mounting the recessed indicator light. The mounting angle of the embedded marker light in the horizontal direction can be adjusted. Furthermore, the base accommodates therein a receptacle connected to the wiring in the pipe in order to supply power to the embedded marker light. The receptacle is connected to a plug derived from an adapter described later.

The second mode is a structure in which an adjusting ring is further attached to the opening end of the base, and the embedded marker lamp is attached via the adjusting ring. The adjustment ring is configured to mount the recessed marker light after adjusting its horizontal angle.

2 Implantation Depth Direction Adjusting Device The embedding depth direction adjusting device is a means interposed between the embedding type indicator lamp and the base when the embedding depth of the base is large, and is generally It is called Zama. Then, it is composed of two or three screw members coupled to each other, and is interposed between the base and the embedded marker lamp to fix them.

<Regarding Operation of the Present Invention> The present invention has the following effects by having the above-mentioned structure.

(1) By supporting the optical unit including the lamp and the reflecting mirror on the substrate, the embedded marker lamp can be easily assembled and adapted to the various kinds of the embedded marker lamps having the light distribution characteristics. be able to. Therefore, the design can be standardized, the design work is facilitated, the number of parts is small, and various kinds of products can be dealt with, which facilitates the production of many kinds.

2. Since the retroreflective layer is formed on the substrate, originally wasted light that enters the substrate from the lamp and the reflecting mirror is retroreflected by the retroreflective layer and returns to the lamp, and the amount of light traveling to the prism again increases. To do. as a result,
It is possible to obtain an increase in luminous intensity of about 5 to 10%. Therefore, it is possible to adapt to a wider variety of varieties by giving flexibility to the luminous intensity.

According to another aspect of the embedded marker lamp of the present invention, the light guiding groove disposed on the upper surface, the internal space communicating with the light guiding groove, and the liquid tight distribution between the light guiding groove and the internal space are provided. A lamp body provided with a prism for optical path regulation provided; an optical unit having a lamp and a reflecting mirror for reflecting light emitted from the lamp toward the prism; a prism in the lamp body supporting the optical unit A substrate arranged at a position facing the light-diffusing plate; a light diffusing plate arranged so as to face the light incident surface of the prism; and a color filter arranged so as to face the light incident surface of the prism with the light diffusing plate interposed therebetween. It is characterized by having;

The present invention defines a structure suitable for an embedded marker lamp having a relatively wide-angle light distribution characteristic. In order to obtain the wide-angle light distribution characteristic, the aperture angle of the prism may be set to a large value in advance, but this results in a wide-angle-only design, which poses a problem as described above.

Therefore, in the present invention, a diffuser plate is added to obtain a wide-angle light distribution characteristic without impairing the uniformity. By arranging a diffusion plate immediately before the prism and diffusing the light incident on the prism in advance, it becomes possible to convert into a wide-angle light distribution. Therefore, in the present invention, the diffusion plate is arranged between the prism and the color filter.

Further, the diffuser plate is particularly excellent in that one surface of the transparent glass plate is uniformly roughened. By using the diffuser plate roughened with a grindstone, the roughened surface is made uniform, and good light diffusion can be obtained.

Further, by disposing the diffusion plate so that the roughened surface of the diffusion plate faces immediately before the light incident surface of the prism, more excellent diffused light can be obtained.

Furthermore, if necessary, the diffuser plate can be constructed by roughening the surface of the color filter on the prism side. Needless to say, it is permissible to add the configuration of claim 1 if necessary.

The color filter is an optical means for selecting a wavelength so that the light beam emitted to the optical path has a predetermined light color, and is arranged in the optical path between the lamp and the prism. Further, as the color filter, a dichroic color filter formed by depositing a dichroic filter filter film on the surface of a glass plate by vapor deposition or the like is preferable because it can efficiently obtain only light of a desired light color. Further, in order to dispose the color filter at a predetermined position, for example, the color filter is supported by a metal frame, and this metal frame is fastened together with the metal fitting of the prism. In this case, the diffuser plate can be attached together.

Thus, in the present invention, the following effects are achieved by having the above-mentioned structure.

(1) By supporting an optical unit having a lamp and a reflecting mirror on a substrate, the embedded marker lamp can be easily assembled and is adapted to a plurality of kinds of embedded marker lamps having various light distribution characteristics. Can be made. For this reason,
It is easy to design, has a small number of parts, and is compatible with a variety of models.

2 By arranging the diffuser plate between the prism and the color filter, it is possible to obtain an embedded marker lamp having a relatively wide-angle light distribution characteristic. Further, the structure is simple, and if the diffuser plate is removed, light distribution characteristics other than wide-angle, for example, medium-angle light distribution characteristics can be obtained.

According to another aspect of the embedded marker lamp of the present invention, the light guiding groove disposed on the upper surface, the internal space communicating with the light guiding groove, and the liquid tight distribution between the light guiding groove and the internal space are provided. A lamp body provided with a prism for optical path regulation provided; an optical unit having a lamp and a reflecting mirror for reflecting light emitted from the lamp toward the prism; a prism in the lamp body supporting the optical unit And a light-shielding plate that is disposed on the light incident surface of the prism and regulates the light incident range.

The present invention defines a structure suitable for an embedded marker lamp having a light distribution characteristic of a relatively narrow angle. In order to obtain a light distribution characteristic with a relatively narrow angle, it is sufficient to set the opening angle of the prism to a small value in advance, but this results in a design for a narrow angle only, and there is a problem as described above.

Therefore, in the present invention, the basic design is made to satisfy the light distribution characteristic of a relatively wide angle, and the light distribution characteristic of a relatively narrow angle is shielded by the light incident surface of the prism. By disposing the plate and blocking the incident light outside the predetermined range, the light incident on the prism is made to have a relatively narrow angle as compared with the case where the light shielding plate is not used in advance. The light incident surface of the prism is preferably configured so as to be suitable for medium-angle light distribution. By doing so, not only a diffuser plate is added to obtain a wide-angle light distribution characteristic as defined in claim 2, but also a narrow-angle light distribution characteristic can be obtained by the present invention. However, if necessary, the light-incident surface of the prism may be configured in advance so as to be suitable for wide-angle light distribution, and the aperture angle of the light-shielding plate can be set to a middle angle or a narrow angle. Therefore, the angle of the light incident surface of the prism is not limited. Needless to say, it is permissible to add the configuration of claim 1 if necessary.

The present invention, having the above-mentioned structure, has the following operation.

(1) By supporting the optical unit including the lamp and the reflecting mirror on the substrate, the embedded marker lamp can be easily assembled and is applicable to plural kinds of embedded marker lamps having various light distribution characteristics. Can be made. For this reason,
It is easy to design, has a small number of parts, and is compatible with a variety of models.

(2) By disposing the light shielding plate on the prism and the light incident surface of the prism, it is possible to obtain an embedded marker lamp having a light distribution characteristic of a relatively narrow angle. Further, the structure is simple, and if the light shielding plate is removed, a relatively wide-angle light distribution characteristic, for example, a medium-angle light distribution characteristic can be obtained.

[0050]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

1 to 5 show an embodiment of the embedded marker lamp according to the present invention defined in claim 1. FIG. 1 is a sectional view, FIG. 2 is a front view of an optical unit, and FIG. FIG. 4 is an exploded perspective view of the unit, FIG. 4 is an exploded perspective view of the optical unit seen from the optical axis direction of the lamp, and FIG. 5 is an enlarged sectional view of a conceptual main part of the substrate and the retroreflective layer. In each figure, the embedded marker lamp 11 includes a lamp body 1, an optical unit 2, a substrate 3, a retroreflective layer 4, a color filter 5 and a connector 6.

<Light Unit 1> The light unit 1 includes an upper light unit 1A,
It consists of a lower lamp body 1B, an O-ring 1C and a mounting screw 1D.

The upper lamp body 1A is provided with a light guiding groove 1a, a flat portion 1b, an inclined surface 1c and a mounting hole 1d on the upper surface, a prism 1e is mounted on the light guiding groove 1a, and a lower peripheral step portion 1f is mounted on the lower surface. I have it. The light guiding groove 1a is provided in the upper lamp body 1.
The upper surface of A is formed so as to extend obliquely upward. The flat portion 1b is formed in the central region of the upper surface of the upper lamp body 1A. The inclined surface 1c is formed from the periphery of the flat portion 1b to the peripheral edge thereof, so that the upper surface of the upper lamp body 1A has a truncated cone shape as a whole. The light guide groove 1a is open over the flat portion 1b on the upper surface and the inclined surface 1c. The mounting hole 1d is formed in the peripheral portion of the upper lamp body 1A and the lower lamp body 1B so as to penetrate the both, and is for mounting the lamp body 1 to a base or an adjustment ring (not shown). A recess 1d1 is formed on the upper surface of the upper lamp body 1A around the mounting hole 1d. The prism 1e is a means for regulating the optical path, and the light guide groove 1a and an internal space 1E described later.
And a metal fitting 1e2 and a pressing metal fitting 1e2 are arranged between them and in a liquid-tight manner. The lower peripheral step portion 1f is formed on the lower surface peripheral portion of the lower lamp body 1A.

The lower lamp body 1b liquid-tightly covers the lower surface of the upper lamp body 1A via an O-ring 1C described later. Further, on the lower surface of the lower lamp body 1B, a contact surface 1g is formed on the peripheral edge portion, and a disk-shaped portion 1h protruding downward from the contact surface 1g is formed on the central portion. The contact surface 1g contacts the lower peripheral step portion 1f of the upper lamp body 1A from below. Further, a mounting hole 1i is formed in the contact surface 1g at a position directly facing the mounting hole 1d of the upper lamp body 1A.

The O-ring 1C is mounted between the lower peripheral step portion 1f of the upper lamp body 1A and a portion adjacent to the contact surface 1g of the lower lamp body 1B to connect the upper lamp body 1A and the lower lamp body 1B. Liquid tightly cover. As a result, an internal space 1E that is liquid-tight to the outside is formed inside the lamp body 1.

The mounting screw 1D is attached to the contact surface 1 of the lower lamp body 1B.
g and the lower peripheral step portion 1f of the upper lamp body 1A are fixed to each other.

<Optical unit 2> Optical unit 2
Is composed of a lamp 2a, a reflecting mirror 2b, a position regulating frame 2c, a pressing piece 2d, an elastic disengagement prevention body 2e and a lamp socket 2f.

The lamp 2a is a halogen bulb. The base pin 2a1 projects from the back surface. A reflecting mirror 2b and a base cement, which will be described later, are integrated at a position where the light emission center of the lamp 2a matches the focal point of the reflecting mirror 2b.

The reflecting mirror 2b comprises a glass substrate and a dichroic mirror formed on the inner surface thereof. Then, as shown in FIG. 4, the upper and lower parts of the rotating paraboloid are cut in parallel to be thin, and a plurality of facets are formed on the reflecting surface.

The position regulating frame 2c is composed of a contact surface 2c1, a lower receiving piece 2c2, a mounting piece 2c3 and a side piece 2c4, and is formed by cutting out and bending a metal plate. The front surface of the reflecting mirror 2b contacts the contact surface 2c1. The lower portion of the reflecting mirror 2b is supported by the lower receiving piece 2c2. The mounting piece 2c3 fixes the position regulation frame 2c to the lower lamp body 1B.
The side piece 2c4 connects the above members and forms a locking window 2c41.

The pressing piece 2d is made of a spring metal strip, the base end of which is welded to the side piece of the position regulating frame 2c, and the tip of the pressing piece presses the back surface of the reflecting mirror 2b.

The elastic fall-off preventing member 2e is composed of a spring strip curved in an arc shape, and both ends thereof are bent to form a locking portion 2e1. Then, the locking portions 2e1 at both ends are narrowed to engage with the locking windows 2c41 of the side pieces 2c4 of the position regulating frame 2c from the inside, thereby mounting the position regulating frame 2c.
As shown in FIG. 2, the elastic fall-off preventing body 2e elastically presses the reflecting mirror 2b mainly via a lamp socket 2f described later.

The lamp socket 2f is connected to the base pin 2a1 projecting from the apex on the back side of the lamp 2a to supply power.

As can be understood from the above description, the front surface of the reflecting mirror 2b integrated with the lamp 2a is attached to the position regulating frame 2
When the contact surface 2c1 of c and the pressing piece 2d are slid and pushed in, the lower end thereof is stopped at a position supported by the lower receiving piece 2c2 and is mounted at a predetermined position.

<Substrate 3> The lower lamp body 1B also serves as the substrate 3. The optical unit 2 is supported by the screw 3a at a position facing the prism 1e in the lamp body 1.

<Retroreflective Layer 4> The retroreflective layer 4 is a layer in which glass beads 4a having a diameter of about 0.5 mm are partially embedded in a white inorganic reflective film 4b, as conceptually shown in FIG. Is. Then, it is formed in a portion of the substrate 3 around the optical unit 2 where light enters the substrate 3 from the lamp 2a and the reflecting mirror 2b.

<Color Filter 5> The color filter 5 is disposed on the front side of the prism 1e supported by the metal frame 5a which is fastened together with the holding metal fitting 1e2.

<Connector 6> The connector 6 is mounted so as to penetrate the lower lamp body 1B in a liquid-tight manner, and is connected to a power connector (not shown) to receive power. Then, power is supplied to the lamp socket 2f via a wiring not shown in FIG.

FIGS. 6 and 7 show an embedded marker light device using one embodiment of the embedded marker light of the present invention shown in FIGS. 1 to 5. FIG. 6 is a plan view and FIG. FIG. In each figure, the same parts as those in FIG. 1 are designated by the same reference numerals and the description thereof will be omitted. The embedded marker lamp device 10 includes an embedded marker lamp 11, a base 12, a cap nut 13, and an O-ring 14.
Consists of.

<Base 12> The base 12 is in the shape of a dish and has a circumferential step 12a, a rising edge 12b, a recess 12c, an annular tapered surface 12d, a through hole 12e, and a stud bolt 12.
f, a power supply introduction part 12g, a power supply connector 12h and an O-ring 12j.

The peripheral step portion 12a is formed on the inner periphery of the upper portion of the base 12, and the lower surface of the contact surface 1g of the embedded marker lamp 11 is placed thereon.

The standing edge 12b is formed so as to stand in a ring shape from the outside of the circumferential step portion 12a. The base 12 is a standing edge 1
It is buried in the road surface up to the position of 2b.

The recess 12c is formed at the back of the stepped portion 12a. Then, the disk-shaped portion 1h of the embedded marker light 11
Accept.

The annular tapered surface 12d is formed at the boundary between the peripheral step portion 12a and the recess 12c, that is, at the upper corner of the inner peripheral edge of the peripheral step portion 12a.

The mounting holes 12e are formed at a plurality of positions on the circumferential step portion 12a at the same pitch and the same inner diameter as the mounting holes 1d and 1i of the embedded marker lamp 11.

The stud bolt 12f is inserted into the mounting hole 12e from the rear surface of the base 12 and projects upward.

The power source introducing portion 12g is disposed so as to penetrate the side surface of the base 12 in a liquid-tight manner, and introduces a power source from the outside.

The power connector 12h is attached to the inner bottom of the base. Then, the connector 6 of the embedded marker light 11
Is detachably connected to the power source introducing portion 12g.

The O-ring 12J is sandwiched between the annular tapered surface 12d and the embedded marker lamp 11.

In order to mount the embedded marker lamp 11 on the base 12, the mounting holes 1d, 1i of the embedded marker lamp 11 are installed.
When the embedded marker lamp 11 is dropped into the base 12 in line with the stud bolts 12f of the base 12, the abutment surface 1g of the lower lamp body 1B while the mounting holes 1d and 1i are inserted into the stud bolt 12f. Comes into contact with the peripheral portion 12a, and the disc-shaped portion 1h is housed inside the recess 12c.
The ring 12j4 contacts the annular tapered surface 12d. Further, at this time, the tips of the legs of the stud bolts 12f project into recesses 1d1 formed dispersedly on the peripheral edge of the upper lamp body 1a. Next, when the cap nut 13 is screwed into the stud bolt 12f in the recess 1d1, the lamp body 1 is fixed to the base 1
2, the O-ring 14 is pressed against the annular tapered surface 12
d, the corner portion between the disk-shaped portion 1h and the contact surface 1g is pressed and deformed. In this state, the embedded marker light 11
Is liquid-tightly sealed and attached to the base 12.

FIG. 8 is a sectional view showing an example in which the embedded marker lamp of the present invention is attached to a base via an adjusting ring. In the figure, the same parts as those in FIG. 7 are designated by the same reference numerals and the description thereof will be omitted.

The adjusting ring 14 has a ring shape and is inserted into the inner peripheral portion of the ring, the peripheral step portion 14a, the mounting hole 14b in the peripheral edge portion 14a, the arcuate through hole 14c in the peripheral edge portion, and the through hole 14c from the rear surface. Stud bolt 14 protruding upwards
d, a tubular tapered surface 14e and an O-ring 14f.

The base 12 'is in the shape of a dish, and has an attachment screw hole 12i and an electric power receiving connector 12j, which face the arcuate through hole 14c of the adjusting ring 14 at the opening end.

Then, the adjusting ring 14 is placed on the base 12 ', the through hole 14c is opposed to the mounting screw hole 12i, and the bolt 15 is passed through after adjusting to a predetermined horizontal angle. The adjusting ring 14 is fixed onto the base 12 'by screwing it into the mounting screw hole 12i via the hole 14c. Next, the mounting holes 1d and 1i of the recessed type indicator lamp 11 are aligned with the stud bolts 14d of the adjusting ring 14 and fitted into the peripheral step portion 14a, and the cap nut 13 is attached to the stud bolts 1.
By screwing in 4d, the O-ring 14f is provided between the annular tapered surface 14e and the corner portion formed between the disk-shaped portion 1h of the embedded marking lamp 11 and the lower surface of the contact surface 1g. It is pressed and deformed. In this state, the embedded marker lamp 11 can be liquid-tightly attached to the base 12 'via the adjustment ring 14.

9 to 11 show an embodiment of the embedded marker lamp according to the present invention defined in claim 2, FIG. 9 is an enlarged sectional view of an essential part, and FIG. 10 is a prism, a diffusion plate and a color filter. FIG. 11 is an exploded perspective view showing a modified example. In each figure, the same parts as those in FIG. 1 are designated by the same reference numerals and the description thereof will be omitted. In this embodiment,
This configuration is suitable for obtaining a relatively wide-angle light distribution characteristic.

That is, the diffuser plate 7 and the color filter 5 are arranged so as to overlap each other on the front surface of the light incident surface of the prism 1e.
The diffusion plate 7 includes a transparent glass plate 7a and a diffusion surface 7b. The diffusion surface 7b is formed by grinding the surface of the transparent glass plate 7a with a grindstone. The diffusion surface 7b is arranged so as to face the light incident surface of the prism 1e.

The color filter 5 is a dichroic filter.

In the modification shown in FIG. 11, a diffusion surface 7b is formed on the back surface of the color filter 5. The dichroic filter of the color filter 5 is attached to the front surface thereof.

12 and 13 show an embodiment of the embedded marker lamp according to the present invention defined in claim 3, FIG. 12 is an exploded perspective view of a main part, and FIG. 13 is a front view of a light shielding plate. . In each figure, the same parts as those in FIG. 1 are designated by the same reference numerals and the description thereof will be omitted. The present embodiment has a configuration suitable for obtaining a light distribution characteristic with a relatively narrow angle. In the present embodiment, the light blocking plate 8 is provided on the light incident surface of the prism 1e. The light shielding plate 8 is provided with a light passage slit 8a having a regulated light passage opening width at the center. The light-shielding plate 8 has a packing 1e3 between the prism 1e and the pressing metal fitting 1e2.
Is pinched through.

Reference numeral 5a is a metal frame, and the color filter 5 is placed in front of the prism 1e by a screw 1e4 to hold the metal fitting 1 in place.
It is attached to the inner surface of the upper lamp body 1A together with e2.

By disposing the light shielding plate 8 in this way, the width of the light incident on the prism 1e is narrowed. Along with this, the width of the light beam emitted from the prism 1e also becomes narrower, and the light distribution characteristic becomes a relatively narrow angle. However, if the light shielding plate 8 is removed, it is possible to obtain a light beam having a relatively wide width and a relatively wide-angle light distribution characteristic as designed.

[0092]

According to the first aspect of the present invention, it is provided with the light guiding groove on the upper surface, the internal space communicating with the light guiding groove, and the optical path regulating prism which is arranged in a liquid-tight manner between the light guiding groove and the internal space. Lamp body, an optical unit equipped with a lamp and a reflector, a substrate that supports the optical unit and positions the optical unit at a position facing the prism in the lamp body, and a light that enters the substrate from the lamp and the reflector. By including the retroreflective layer formed on the substrate so as to be retroreflected, it becomes possible to promote the sharing of the constituent parts and to cope with a wide variety of products having different light distribution characteristics and / or luminous intensity. It is possible to provide an embedded marker lamp in which the originally wasted light incident on the substrate from the reflecting mirror is effectively used to improve the luminous intensity.

According to the second aspect of the present invention, there is provided the light guiding groove on the upper surface, the internal space communicating with the light guiding groove, and the optical path regulating prism which is arranged in a liquid-tight manner between the light guiding groove and the internal space. A lamp body, an optical unit including a lamp and a reflecting mirror, a substrate that supports the optical unit and is arranged at a position where the optical unit faces the prism in the lamp body, and a light diffusion plate that faces a light incident surface of the prism. By including a color filter that faces the light incident surface of the prism with the light diffusion plate sandwiched between them, it is possible to promote the sharing of components and support a wide variety of products with different light distribution characteristics or different luminous intensity. At the same time, it is possible to obtain an embedded marker lamp having a relatively wide-angle light distribution characteristic.

According to the third aspect of the present invention, there is provided the light guiding groove on the upper surface, the internal space communicating with the light guiding groove, and the optical path regulating prism which is arranged in a liquid-tight manner between the light guiding groove and the internal space. A lamp body, an optical unit including a lamp and a reflecting mirror, a substrate that supports the optical unit and positions the optical unit in a position facing the prism inside the lamp body, and a light incident surface of the prism that allows light to enter. By providing a light-shielding plate that regulates the range, it is possible to promote the sharing of component parts and support light distribution characteristics or a wide variety of products with different luminous intensities, and also a light distribution characteristic with a relatively narrow angle. It is possible to provide an embedded marker lamp having

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of the embedded marker light of the present invention as defined in claim 1.

FIG. 2 is a front view of the same optical unit.

FIG. 3 is an exploded perspective view of the same optical unit.

FIG. 4 is an exploded perspective view of the optical unit as seen from the optical axis direction of the lamp.

FIG. 5 is an enlarged sectional view of a conceptual main part of the substrate and the retroreflective layer.

FIG. 6 is a plan view showing an embedded marker light device using an embodiment of the embedded marker light of the present invention shown in FIGS. 1 to 5;

FIG. 7 is a sectional view of the same

FIG. 8 is a cross-sectional view showing an example in which the embedded marker lamp of the present invention is attached to a base via an adjustment ring.

FIG. 9 is an enlarged sectional view of an essential part showing an embodiment of the embedded marker light of the present invention as defined in claim 2;

FIG. 10 is an exploded perspective view showing a prism, a diffusion plate, and a color filter in the same manner.

FIG. 11 is an exploded perspective view showing a modification of the same.

FIG. 12 is an exploded perspective view of essential parts showing an embodiment of the embedded marker light of the present invention as defined in claim 3;

FIG. 13 is a front view of the same light shielding plate.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Lamp body, 1A ... Upper lamp body, 1B ... Lower lamp body, 1a ... Light guide groove, 1e ... Prism, 2 ... Lamp unit, 2a ...
Lamp, 2b ... Reflector, 3 ... Substrate, 4 ... Retroreflective layer,
11-Built-in marker light

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) F21Y 101: 00 F21Q 3/00 C F21S 1/00 C (72) Inventor Shingo Shinno Higashishinagawa, Shinagawa-ku, Tokyo 4th-3rd Toshiba R-Tech Co., Ltd. F-term (reference) 2D064 AA02 AA22 DB11 EB02 EB23 EB34 EB35 HA14 HA17 3K080 AA08 AA12 AB13 AB18 BA01 BB02 BB18 BC01 BD01 BE02 BE07

Claims (3)

[Claims] 1. A light guide groove provided on an upper surface, an internal space communicating with the light guide groove, and a prism for controlling an optical path liquid-tightly disposed between the light guide groove and the internal space. With a lamp;
An optical unit including a lamp and a reflecting mirror that reflects light emitted from the lamp toward the prism; a substrate that supports the optical unit and arranges the optical unit at a position facing the prism in the lamp body; And a retroreflective layer formed on the substrate so as to retroreflect light incident on the substrate. 2. A light guide groove provided on the upper surface, an internal space communicating with the light guide groove, and a prism for controlling an optical path liquid-tightly disposed between the light guide groove and the internal space. With a lamp;
An optical unit including a lamp and a reflecting mirror that reflects the light emitted from the lamp toward the prism; a substrate that supports the optical unit and arranges the optical unit at a position facing the prism in the lamp body; And a color filter disposed so as to face the light incident surface of the prism with the light diffusing plate sandwiched between the light diffusing plate and the color filter. light. 3. A light guiding groove provided on the upper surface, an internal space communicating with the light guiding groove, and a prism for optical path regulation which is liquid-tightly disposed between the light guiding groove and the internal space. With a lamp;
An optical unit including a lamp and a reflecting mirror that reflects the light emitted from the lamp toward the prism; a substrate that supports the optical unit and arranges the optical unit at a position facing the prism in the lamp body; And a light-shielding plate for controlling the light incident range.