JP2022022634A - Lighting device - Google Patents

Abstract

To provide a lighting device of which leg part can be installed stably even when an obstacle is in an installation place.SOLUTION: A lighting device includes a device body and a pair of leg parts. The device body includes a casing and a light source unit. The casing includes a longitudinal bottom wall part in one axial direction. The light source unit is disposed inside the casing and emits illumination light. The pair of leg parts are fitted to the bottom wall part and configured to be capable of sliding in the one axial direction.SELECTED DRAWING: Figure 17

Description

The present invention relates to, for example, a lighting device used for lighting a highway.

As a lighting installed on a highway, a method of illuminating the road from a high position using a pole is generally used, but light leakage to the outside of the road such as a residential area, installation cost, work at a high place, etc. There was a problem. Therefore, in recent years, the development of a low-position lighting system in which a lighting fixture is installed at a position as low as about 1 m from the road surface has been promoted.

As this type of low-position illuminating device, for example, Patent Document 1 discloses a low-position illuminating type illuminating device having a pair of legs at the bottom of the illuminating device main body.

Japanese Unexamined Patent Publication No. 2002-352608

However, in the lighting device described in Patent Document 1, since the mounting position of the pair of legs is fixed, if there is an obstacle such as a work piece at the installation site of the lighting device, the lighting device avoids the obstacle. There is a problem that it is difficult to install the device stably.

In view of the above circumstances, an object of the present invention is to provide a lighting device capable of stably installing a leg portion even when there is an obstacle at the installation site.

In order to achieve the above object, the lighting device according to one embodiment of the present invention includes a device main body and a pair of legs.
The device body has a casing and a light source unit. The casing has a bottom wall portion that is long in the uniaxial direction. The light source unit is arranged inside the casing and emits illumination light.
The pair of legs are attached to the bottom wall portion and are configured to be slidable in the uniaxial direction.

According to the above-mentioned lighting device, since the pair of legs are slidably configured with respect to the bottom wall portion of the casing, even if there is an obstacle at the installation site, the lighting device can be stabilized by avoiding the obstacle. Can be installed.

Even if the bottom wall portion has a guide groove parallel to the uniaxial direction, and the pair of leg portions has an engaging portion that engages with the guide groove and is relatively movable along the guide groove. good.

The pair of legs may be configured to be rotatable around the uniaxial axis in a predetermined angle range with respect to the bottom wall portion.

The casing has a main block forming the bottom wall portion and a pair of side blocks fixed to both ends of the main block in the axial direction, and the main block has a cross-sectional shape orthogonal to the uniaxial direction. May be a uniform molded body.

The pair of side blocks have a plurality of screw insertion holes, and the main block has a plurality of screw receivers that penetrate in the uniaxial direction and screw a plurality of screw members inserted into the plurality of screw insertion holes. It may have a part.

The plurality of screw members may have a screw groove portion screwed into the screw receiving portion and a guide shaft portion provided at the tip of the screw groove portion and inserted into the screw receiving portion.

A plurality of plug members embedded in each of the plurality of screw insertion holes may be further provided. The plurality of plug members are arranged in multiple stages in the uniaxial direction and have a plurality of annular protrusions that elastically contact the inner peripheral wall surface of the screw insertion hole.

According to the present invention, the legs can be stably installed even if there is an obstacle at the installation site.

It is a perspective view of the lighting apparatus which concerns on one Embodiment of this invention. (A) is a front view of the lighting device, (B) is a bottom view thereof, and (C) is a side view thereof. It is an exploded perspective view of the said lighting apparatus. It is a schematic plan view which shows the installation example of the said lighting device on the road. It is a perspective view which shows the open state of the window member of the said lighting apparatus. 2A is a cross-sectional view taken along the line AA in FIG. 2A. It is a front view of the fixing screw member of a main block and a side block forming a casing in the said lighting apparatus. It is an overall view of the plug member embedded in the screw insertion hole of the side block, (A) is a front view, (B) is a side view. It is a perspective view of the optical unit in the said lighting apparatus. (A) is a plan view of the optical unit, and (B) is a front view thereof. (A) is a plan view showing a light emitting element mounting surface of an LED substrate in the optical unit, and (B) is a side view thereof. It is a ray tracing diagram of the emitted light (illumination light) in the said optical unit. It is a ray tracing diagram explaining the comparative example of the structure of the said optical unit. It is a ray tracing diagram explaining one operation of the said optical unit. (A) is a front view of a leg portion in the lighting device, and (B) is a side view thereof. It is a top view of the said leg part. It is a front view explaining one operation of the said lighting apparatus.

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

1 is a perspective view of the lighting device 100 according to an embodiment of the present invention, FIG. 2A is a front view thereof, FIG. 2B is a bottom view thereof, and FIG. 2C is a side view thereof. 3 is an exploded perspective view thereof. In FIGS. 1 and 3, the X-axis, Y-axis, and Z-axis indicate three axes orthogonal to each other, the X-axis corresponds to the left-right direction, the Y-axis corresponds to the front-back direction, and the Z-axis corresponds to the height direction. ..

The lighting device 100 of the present embodiment is configured as a low-position lighting lamp installed on, for example, a highway. The lighting device 100 includes a device main body 10 and a pair of legs 81 and 82 that support the device main body 10. The apparatus main body 10 has a casing 110, built-in parts such as an optical unit 20, a terminal block 31, a power supply unit 32, etc., which will be described later, installed inside the casing 110, and a window member 120 that covers the inside of the casing 110.

FIG. 4 is a schematic plan view showing an example of installation of the lighting device 100 on the road. In the figure, W1 is a retaining wall, W2 is a median strip, Tz1 is a first lane, Tz2 is a second lane, and Rs is a roadside zone. As shown in the figure, a plurality of lighting devices 100 are installed on the retaining wall W1 with the window members 120 facing the median strip W2 side at predetermined intervals in the vehicle traveling direction. The lighting device 100 irradiates the emitted light L from the light source unit 20 toward the median strip W2 in a direction orthogonal to the traffic zones Tz1 and Tz2 via the window member 120. The installation height of the lighting device 100 with respect to the retaining wall W1 is not particularly limited, and is, for example, 1.2 m. The lighting device 100 may be installed not only in the retaining wall W1 but also in the median strip W2.

[Overall configuration of lighting equipment]
5 is a sectional view taken along line AA in FIG. 2A, and FIG. 6 is a perspective view of the lighting device 100 showing an open state of the window member 120. Hereinafter, the overall configuration of the lighting device 100 will be described with reference to FIGS. 5 and 6.

(casing)
The casing 110 has a substantially rectangular parallelepiped shape that is long in the X-axis direction. The casing 110 has a three-divided structure consisting of a main block 111 extending in the X-axis direction and a pair of side blocks 131 and 132 attached to both ends of the main block 111 in the X-axis direction. The main block 111 and the pair of side blocks 131 and 132 are made of a metal material such as an aluminum alloy.

The main block 111 is made of a metal material such as an aluminum alloy, and is formed in a substantially U-shaped cross section having an upper wall portion S1 and a bottom wall portion S2 and a back wall portion S3, which are long in the X-axis direction, respectively. (See FIG. 5). The main block 111 is made of a molded body having a uniform cross section perpendicular to the X-axis direction, and is manufactured by an extrusion molding method in the present embodiment.

On the other hand, the window member 120 is made of a translucent material such as tempered glass or reinforced plastic having a long side in the X-axis direction. The window member 120 is formed in a shape similar to the front shape (shape seen from the X-axis direction) of the casing 110. The window member 120 is attached to the front side of the casing 110 so as to face the back wall portion S3 in the X-axis direction.

In the present embodiment, the window member 120 is rotatably attached to the casing 110. A plurality of hinge members 71 that support the upper long side portion of the window member 120 are attached to the upper wall portion S1 of the casing 110 (main block 111). As a result, as shown in FIG. 6, since the inside of the apparatus main body 10 can be opened by the rotation operation of the window member 120, the optical unit 20, the terminal block 31, and the power supply unit installed inside the apparatus main body 10 can be opened. Maintenance workability of built-in parts such as 32 is ensured.

Further, a plurality of fasteners 72 capable of hooking the long side portion on the lower side of the window member 120 are attached to the bottom wall portion S3 of the casing 110 (main block 111). The stopper 72 includes a ring portion attached to the casing 110 side and a hook portion attached to the window member 120 side, and the ring portion and the hook portion are mutually at a position where the window member 120 closes the casing 110. Engaged. As a result, careless rotation of the window member 120 is prevented.

As shown in FIG. 6, the window member 120 is formed with a window portion W that transmits light emitted from the optical unit 20. The window portion W is a rectangle long in the X-axis direction, and is partially formed in a region facing the optical unit 20 in the Y-axis direction. The region of the window member 120 other than the window portion Wb is covered with a black light-shielding layer Wb formed on the inner surface side of the window member 120. The light-shielding layer Wb is for making the area other than the area corresponding to the optical unit 20 in the casing 110 invisible from the outside, and is omitted as necessary depending on the size of the casing 110 or the optical unit 20. It is possible.

As described above, the main block 111 of the casing 110 is composed of a molded body having a uniform cross-sectional shape in the X-axis direction. The main block 111 has seven guide grooves G1 to G7 extending parallel to the X-axis direction. Specifically, the guide grooves G1, G2 and G3 are formed on the inner surface side of the back wall portion S2, and the guide grooves G4 and G5 are formed on the outer surface side of the bottom wall portion S2. The guide groove G6 is formed at the front side end portion of the upper wall portion S1, and the guide groove G7 is formed at the front side end portion of the bottom wall portion S2.

The guide grooves G1 to G7 are formed over the entire width direction (X-axis direction) of the main block 111. Of these, the guide grooves G1 to G5 have a barb portion that forms an opening width from the groove width, and the head of a screw member or a bolt member (hereinafter, also referred to as a fastener) that fits into each guide groove. Formed to be engageable. The guide grooves G6 and G7 form an accommodating portion of the seal ring 140 interposed between the main block 111 and the window member 120.

The guide grooves G1 to G3 are provided at intervals in the height direction (Z-axis direction) of the back wall portion S3 of the main block 111. The heads of a plurality of fasteners F1 (see FIG. 6) for fixing the upper ends of the optical unit 20 and the terminal block 31 are engaged with the guide groove G1 located at the uppermost stage. The guide groove G2 located at the center is engaged with the heads of a plurality of fasteners for fixing the power supply unit 32 that supplies electric power to the optical unit 20. The head of the fastener that fixes the lower end of the terminal block 31 engages with the guide groove G3 located at the bottom. In each of the above fasteners, the optical unit 20, the terminal block 31, and the power supply unit 32 are fixed to the guide grooves G1 to G3, respectively, by screwing the nut member N1 (see FIG. 6) to their shaft portions.

The power supply unit 32 is arranged between the optical unit 20 and the terminal block 31. The terminal block 31 electrically connects between the power cable inserted inside the casing 110 and the power supply unit 32 via the bush B attached to one side block 131.

The guide grooves G4 and G5 are provided at intervals in the front-rear direction (Y-axis direction) of the bottom wall portion S2 of the main block 111. The heads of fasteners F2 (see FIG. 6) for fixing a pair of legs 81 and 82 for installing the apparatus main body 10 on the retaining wall W1 are engaged with the guide grooves G4 and G5. Each fastener F2 has a pair of leg portions 81 and 82 fixed to the guide grooves G4 and G5, respectively, by screwing a nut member N2 (see FIG. 6) to the shaft portion thereof. The pair of legs 81 and 82 are fixed by two fasteners F2 facing each other in the front-rear direction.

The main block 111 further has four screw receiving portions H1 to H4 extending parallel to the X-axis direction. Specifically, the screw receiving portions H1 to H4 have a partially cylindrical shape having an axial center in the X-axis direction. The partially cylindrical shape is a cylindrical shape in which a part of the circumference is missing.

The screw receiving portion H1 is formed directly above the guide groove G1 in the back wall portion S3. The screw receiving portion H2 is formed on the front side of the upper wall portion S1. The screw receiving portion H3 is formed at the boundary portion between the bottom wall portion S2 and the back wall portion S3. The screw receiving portion H4 is formed on the front side of the bottom wall portion S2. These screw receiving portions H1 to H4 are formed over the entire width direction (X-axis direction) of the main block 111, and a plurality of side blocks 131 and 132 for fixing the pair of side blocks 131 and 132 to both ends in the X-axis direction of the main block 111. It functions as a screw hole into which the screw member P is screwed.

The pair of side blocks 131 and 132 form both side walls of the casing 110 facing each other in the X-axis direction. The pair of side blocks 131 and 132 are attached to both ends of the main block 111 in the X-axis direction, and each has an opening 13P having a shape corresponding to both ends. Each opening 13P of the side blocks 131 and 132 is typically fixed to both ends of the main block 111 via a seal ring. The seal ring may be composed of individual parts or may be integrally formed with the seal ring 140.

Guide grooves G8 and G9 for accommodating folded portions at both ends of the seal ring 140 in the X-axis direction are provided at the front end portions of the pair of side blocks 131 and 132, respectively (see FIG. 3). The guide grooves G8 and G9 are continuously connected to the guide grooves G6 and G7 provided in the main block 111. As a result, the seal ring 140 can be stably held between the casing 110 and the window member 120.

The pair of side blocks 131 and 132 have a plurality of screw insertion holes M (see FIG. 3) formed at positions corresponding to the screw receiving portions H1 to H4 of the main block 111. The pair of side blocks 131 and 132 are fixed by a plurality of screw members P inserted into the screw insertion holes M.

FIG. 7 is a front view of the screw member P as viewed from the Y-axis direction. The screw member P has a head portion P1, a screw groove portion P2 screwed into the screw receiving portions H1 to H4, and a guide shaft portion P3 provided at the tip of the screw groove portion P2. The guide shaft portion P3 does not have a thread groove and is formed with a shaft diameter smaller than that of the thread groove portion P2.

The guide shaft portion P3 is for positioning the screw member P with respect to the screw receiving portions H1 to H4. That is, when the side blocks 131 and 132 are fixed to the main block 111, the guide shaft portion P3 is inserted into the screw receiving portions H1 to H4, so that the screw member P is parallel to the main block 111 in the X-axis direction. Maintained in posture. As a result, even when the screw insertion holes M of the side blocks 131 and 132 are deeply formed, the side blocks 131 and 132 can be easily fixed by the screw member P.

The apparatus main body 10 further includes a plurality of plug members T embedded in the screw insertion holes M of the side blocks 131 and 132. The stopper member T functions as a seal member for preventing moisture such as raindrops from entering the apparatus main body 10 through the screw insertion hole M.

8A and 8B are overall views of the plug member T, where FIG. 8A is a front view seen from the Y-axis direction, and FIG. 8B is a side view on one side seen from the X-axis direction. The plug member T is made of an elastic material and is formed in a cylindrical shape having an axial center in the X-axis direction. The plug member T has a columnar portion T1 and a plurality of annular protrusions T2 formed around the columnar portion T2. The plurality of annular protrusions T2 are arranged in multiple stages in the axial center direction (X-axis direction) of the columnar portion T2, and are configured to be able to elastically contact the inner peripheral wall surface of the screw insertion hole M.

As described above, by arranging the annular protrusions T2 in multiple stages in the axial direction, a plurality of annular contact regions between the screw insertion hole M and the plug member T are formed in the axial direction, so that the screw insertion hole M is formed. It is possible to effectively prevent raindrops from entering the apparatus main body 10. The number of the annular protrusions T2 is not limited to three shown in the figure, and may be two or four or more.

The screw insertion holes M of the side blocks 131 and 132 made of the molded body have a die draft in the axial direction thereof. In this way, in order to apply a uniform pressing force to the entire contact area of the plug member T in the screw insertion hole M, the plug member T has one end T1 facing the bottom of the screw insertion hole M as the other. It is formed to have a smaller diameter than the side end T2. In the present embodiment, a bulging portion T3 protruding outward is provided at the center of the end portion T1 on the small diameter side. The shape and size of the bulging portion T3 are not particularly limited, and it is preferable that the presence of the bulging portion T3 can be recognized by the feel of the operator's fingers. As a result, since the end portion T1 on the small diameter side can be recognized without the visual inspection of the operator, it is possible to prevent misidentification of the insertion direction of the plug member T.

(Optical unit)
Subsequently, the details of the optical unit 20 will be described.

The optical unit 20 is an illumination light source emitted from the illumination device 100. As shown in FIGS. 3 and 6, the optical unit 20 is installed inside the casing 110 and has a base member 21 and a plurality of LED substrates 22.

The base member 21 supports the LED substrate 22 that supports the plurality of light emitting elements, and also has a function as a reflector that reflects the light emitted from the LED substrate 22 toward the window member 120. The base member 21 extends in the width direction (X-axis direction) of the casing 110 and is composed of a molded body of a metal material such as an aluminum alloy having a uniform cross-sectional shape in the X-axis direction. Is made by.

As shown in FIG. 6, the base member 21 has a support plate portion 211, a reflector portion 212, a light-shielding plate portion 213, a fixing plate portion 214, and a leg plate portion 215, which are integrally and X. It is formed continuously in the axial direction.

The support plate portion 211 has a support surface 211a on which the LED substrate 22 is mounted. The reflecting mirror portion 212 is integrally formed with the support plate portion 211, and reflects the light emitted from the LED substrate 22 toward the window member 120. The light-shielding plate portion 213 is integrally formed with the support plate portion 211, and regulates the incident of the emitted light to the window member 120 from a predetermined direction. The fixing plate portion 214 is integrally formed with the support plate portion 211, and is fixed to the back wall portion S3 (guide groove G1) of the casing 110 via a plurality of fasteners. The leg plate portion 215 is integrally formed with the reflector portion 212 and abuts on the back wall portion S3 to hold the posture of the base member 21 installed in the casing 110.

9 is a perspective view of the optical unit 20, FIG. 10A is a plan view of the optical unit 20 as viewed from the Z-axis direction, and FIG. 10B is a front view of the optical unit 20 as viewed from the Y-axis direction. Is. 11 (A) is a plan view showing a light emitting element mounting surface of the LED substrate 22, and FIG. 11 (B) is a side view of the LED substrate 22.

The LED board 22 has a circuit board 221 having a long side in the X-axis direction, and a plurality of light emitting elements 222 mounted on the circuit board 221. The circuit board 221 has a rectangular shape long in the X-axis direction, and in the central portion thereof, a plurality of female screw members 224 screwed with a plurality of fasteners V inserted through a support plate portion 211 of the base member 21. Are embedded at predetermined intervals in the X-axis direction. Further, a connector 223 for connecting to a wiring cable (not shown) extending from the power supply unit 32 is mounted on one end of the circuit board 221 on one side in the longitudinal direction. In the present embodiment, a plurality of (two in this example) LED substrates 22 are aligned in the X-axis direction and mounted on the support surface 211a (see FIG. 3).

The plurality of light emitting elements 222 are typically semiconductor light emitting devices such as LEDs (Light Emitting Diodes), and the emission color is typically white. The plurality of light emitting elements 222 are arranged in a single row on the circuit board 221 at predetermined intervals along the long side direction (X-axis direction), but may be arranged in multiple rows. The LED substrate 22 is fixed on the support surface 211a of the support plate portion 211 via a plurality of fasteners with the mounting surface of the light emitting element 222 facing the reflector portion 212.

The support plate portion 211 of the base member 21 has a first long side portion L1 facing the back wall portion S3 of the casing 110 and a second long side portion L2 facing the window member 120 on the opposite side thereof (FIG. 10). See (A)). In the LED substrate 22, a plurality of light emitting elements 222 are arranged unevenly on one long side of the circuit board 221 (see FIG. 11A), and the long side on one side thereof is the first support plate portion 211. It is arranged on the support surface 211a of the support plate portion 211 so as to face the long side L1 side.

Further, the support plate portion 211 is inclined downward from the first long side portion L1 toward the second long side portion L2 by a predetermined angle, and the support surface 211a for supporting the LED substrate 22 is on the lower surface side of the support plate portion 211. Set. As a result, it is possible to prevent the light emitting element 222 from being directly seen from the front of the lighting device 100, and it is possible to suppress glare of light when the vehicle occupant sees the lighting device 100.

The reflecting mirror unit 212 of the base member 21 reflects the light emitted from the light emitting element 222 toward the window member 120 in the Y-axis direction. In the present embodiment, the reflector portion 212 is connected to the first long side portion L1 of the support plate portion 211 and has a curved surface 212a facing the support surface 211a (see FIG. 6). Since the light reflecting surface of the reflecting mirror portion 212 has a curved shape that is convex toward the back wall portion S3, the light emitted from the light emitting element 222 can be efficiently reflected in the front direction. Since the LED substrate 22 is mounted on the lower surface side of the support plate portion 211, the reflector portion 212 is arranged below the support plate portion 211.

FIG. 12 is a ray tracing diagram of the emitted light (illumination light L) in the optical unit 20. As shown in the figure, the light emitted from the light emitting element 222 is reflected by the reflecting mirror unit 212 of the base member 21 toward the front surface of the lighting device 100, passes through the window member 120, and is irradiated to the outside. Since the reflecting mirror portion 212 is formed in a curved shape, almost all of the light emitted from the light emitting element 222 can be reflected in the front direction, whereby the efficiency of light utilization can be improved.

The curved surface 212a that reflects the emitted light is subjected to surface treatment such as mirror surface treatment or surface treatment such as sticking of metal foil or white PET (polyethylene terephthalate) to increase the light reflectance. The surfaces of the base member 21 other than the curved surface 212a are colored black (for example, alumite treatment) to prevent reflection of stray light in the casing 110.

The light-shielding plate portion 213 of the base member 21 is provided on the second long side portion L2 of the support plate portion 211. As described above, the light-shielding plate portion 213 has a function of restricting the incident light emitted from the light emitting element 222 onto the window member 120 from a predetermined direction. The predetermined direction means a direction in which the angle of incidence on the window member 120 is equal to or greater than the predetermined angle.

As shown in FIG. 13, when the light-shielding plate portion 213 is not provided, the light emitted from the light emitting element 222 in a direction close to parallel to the support plate portion 211 is sequentially reflected by the window member 120 and the reflector portion 212, and the window member It may re-enter 120 at a relatively large angle of incidence. In this case, the light re-entering the window member 120 is emitted upward from the window member 120. Such light causes light leakage to the outside of the road, so it is necessary to prevent it as much as possible.

Therefore, in the lighting device 100 of the present embodiment, by providing the light-shielding plate portion 213 on the base member 21, the light re-entering the window member 120 is reflected downward as shown in FIG. This makes it possible to prevent light from being emitted from the window member 120 in an unintended predetermined direction. The light incident surface of the light-shielding plate portion 213 may be mirror-treated, but is preferably colored black from the viewpoint of suppressing the generation of stray light.

The fixing plate portion 214 of the base member 21 is connected to the first long side portion L1 of the support plate portion 211, and is formed so as to stand up vertically in the vertical direction. A plurality of through holes U (see FIG. 10B) through which the shaft portion of the fastener F1 engaged with the guide groove G1 of the back wall portion S3 is inserted are spaced in the fixing plate portion 214 along the X-axis direction. It is provided at the same time. The base member 21 (optical unit 20) is fixed to the back wall portion S3 of the casing 110 by screwing the nut member N1 into the shaft portion of the fastener F1 inserted through each through hole U.

The leg plate portion 215 of the base member 21 is a flat plate portion provided so as to project from the back surface side of the reflector portion 212 toward the back wall portion S3 of the casing 110. The tip of the leg plate portion 215 is in contact with the inner surface of the back wall portion S3 (see FIG. 6), whereby the fixed posture of the base member 21 (optical unit 20) in the casing 110 is maintained.

In the optical unit 20 of the present embodiment configured as described above, since the support plate portion 211, the reflector portion 212, and the light-shielding plate portion 213 of the base member 21 are integrally formed, the support plate portion 211 is formed. Stable relative positioning between optical elements such as the light emitting element 222 (LED substrate 22), the reflecting mirror unit 212, and the light shielding plate unit 213 mounted on the light emitting element 222 (LED substrate 22) is possible. Therefore, as compared with the case where these optical elements are separately fixed to the casing 110, it is possible to suppress the occurrence of relative position variation due to the influence of individual differences and assembly tolerances of each optical element, and it is possible to suppress the occurrence of relative position variation among the optical elements. Fine adjustment can be eliminated.

In particular, in the lighting device 100 that is long in the uniaxial direction as in the present embodiment, it is necessary to mount a plurality of LED substrates 22 in the longitudinal direction. Here, when the reflection member and the light-shielding member are made of separate parts for each LED substrate, the above-mentioned adjustment work becomes more complicated and causes a decrease in the assembly workability of the lighting device. On the other hand, according to the present embodiment, since the base member 21 is composed of a molded body having a uniform cross-sectional shape in the longitudinal direction, the support plate portion 211, the reflector portion 212, and the light-shielding portion are used for the plurality of LED substrates 22. Optical elements such as the plate portion 213 can be shared, and fine adjustment of the relative position between the optical elements for each LED substrate 22 becomes unnecessary, and the assembly workability can be greatly improved.

Further, according to the present embodiment, since the LED substrate 22, the reflecting mirror unit 212, and the light-shielding plate unit 213 can be integrated by a single optical unit 20, installation on the casing 110 can be simplified. As a result, the assembly workability is further improved, and the productivity and the work cost can be improved.

Further, according to the present embodiment, since the plurality of fasteners F1 for fixing the optical unit 20 are engaged with the guide grooves G1 formed in the back wall portion S3 of the casing 110, the fasteners are fastened to the guide grooves G1. By sliding F1, the position of the optical unit 20 with respect to the casing 110 can be arbitrarily adjusted in the uniaxial direction. Similarly, the terminal block 31 and the power supply unit 32 can be adjusted to arbitrary positions along the guide grooves G1 to F3.

(leg)
Subsequently, a pair of legs 81 and 82 installed on the bottom wall portion S2 of the apparatus main body 10 will be described.

The pair of legs 81, 82 are configured symmetrically with respect to the longitudinal center of the illuminator 100. The pair of legs 81 and 82 each have the same structure, and in the present embodiment, each of the pair of legs 81 and 82 is configured by combining two brackets made of a metal material such as L-shaped stainless steel.

15 (A) is a front view of the legs 81 and 82, and FIG. 15 (B) is a side view thereof. FIG. 16 is a plan view of the legs 81 and 82. The legs 81 and 82 have a first bracket BL1, a second bracket BL2, and two fasteners F3 and F4 connecting between them.

The legs 81 and 82 are combined with each other so that the vertical plate portions of the first bracket BL1 and the second bracket BL2 extend in opposite directions. In the horizontal plate portion of the first bracket BL1, two through holes through which the shaft portions of the two fasteners F2 (see FIG. 6) for fixing the legs 81 and 82 to the bottom wall portion S2 of the casing 110 penetrate. 803 is provided. The first bracket BL1 is fixed to the bottom wall portion S2 by screwing the nut member N2 (see FIG. 6) into the shaft portion of the fastener F2 inserted through the through hole 803.

On the other hand, the horizontal plate portion of the second bracket BL2 is provided with a mounting hole 84 which is installed on the upper surface of the installation portion (retaining wall W1) and through which an anchor bolt (not shown) penetrates. The mounting hole 804 is formed by a long hole long in the longitudinal direction (X-axis direction) of the casing 110. Therefore, the penetration position of the anchor bolt can be adjusted to an arbitrary position in the mounting hole 804 in the X-axis direction.

The fasteners F3 and F4 are attached so as to penetrate the vertical plate portions of the first bracket BL1 and the second bracket BL2, thereby fixing the vertical plate portions to each other. The fastener F4 is arranged directly below the fastener F3, and the through hole 805 through which the fastener F4 of each vertical plate portion penetrates is in the front-rear direction (Y-axis direction) of the casing 110 as shown in FIG. ) Is formed by a long hole. Therefore, the second bracket BL2 is configured to be rotatable with respect to the first bracket BL1 (bottom wall portion S2 of the casing 110) around the X-axis around the fastener F3 within a predetermined angle range. The predetermined angle range can be arbitrarily set according to the distance between the axes of the fasteners F3 and F4 and the length of the through hole 805 in the longitudinal direction, and is set, for example, by 10 ° (± 10 °) in the front-rear direction. .. Thereby, the elevation angle or the depression angle of the apparatus main body 10 can be arbitrarily adjusted in the angle range.

By the way, the fastener F2 for fixing the legs 81 and 82 to the bottom wall portion S2 of the casing 110 functions as an engaging portion that engages with the guide grooves G4 and G5, respectively. As described above, the guide grooves G4 and G5 are formed so as to extend continuously in the longitudinal direction (X-axis direction) of the casing 110. Therefore, with the nut member N2 loosened, the fastener F2 is slidably configured in the uniaxial direction (X-axis direction) along the guide grooves G4 and G5.

Therefore, according to the present embodiment, there is some obstacle (for example, an arbitrary work or a boundary portion of a block piece constituting the retaining wall W1) at the installation site (upper surface of the retaining wall W1) where the legs 81 and 82 are installed. ) Is present, the relative position of the pair of legs 81, 82 can be adjusted to any position where interference between the obstacle and the legs 81, 82 can be avoided. As a result, the pair of legs 81 and 82 can be fixed to the installation site while avoiding obstacles, and the workability of the lighting device 100 can be improved.

Typically, as shown in FIG. 17, the pair of legs 81 are slid evenly in the left-right direction (arrow direction in the figure) with respect to the center position in the longitudinal direction of the apparatus main body 10, so that they are relative to each other. The position is adjusted. The slide range can be arbitrarily set according to the lengths of the guide grooves G4 and G5. Not limited to the above example, the center of the distance between the pair of legs 81 and 82 may be biased to either side of the center position in the longitudinal direction of the apparatus main body 10. Alternatively, the positions of the pair of legs 81, 82 may be adjusted to a region on one side of the center position.

[Modification example]
In the above embodiment, the lighting device 100 is configured as a low-position lighting device for a roadway such as a highway, but the present invention is not limited to this, and the present invention can be applied as a lighting device for advertisements, exhibits, and the like.

10 ... Device main body 20 ... Optical unit 21 ... Base member 22 ... LED substrate 81, 82 ... Leg 100 ... Lighting device 110 ... Casing 111 ... Main block 120 ... Window member 131, 132 ... Side block 211 ... Support plate portion 211a ... Support surface 212 ... Reflector part 213 ... Shading plate part 214 ... Fixed plate part 222 ... Light emitting element F1, F2 ... Fasteners G1 to G5 ... Guide groove P ... Screw member S2 ... Bottom wall part S3 ... Back wall part T ... Plug Element

Claims (7)

An apparatus main body having a casing having a bottom wall portion long in the uniaxial direction and a light source unit arranged inside the casing and emitting illumination light.
A lighting device provided with a pair of legs attached to the bottom wall portion and configured to be slidable in the uniaxial direction. The lighting device according to claim 1.
The bottom wall portion has a guide groove parallel to the uniaxial direction.
The pair of legs is an illuminating device having an engaging portion that engages with the guide groove and is relatively movable along the guide groove. The lighting device according to claim 1 or 2.
The pair of legs is a lighting device configured to be rotatable around the one axis with respect to the bottom wall portion within a predetermined angle range. The lighting device according to claim 2 or 3.
The casing has a main block forming the bottom wall portion and a pair of side blocks fixed to both ends of the main block in the axial direction.
The main block is a lighting device which is a molded body having a uniform cross-sectional shape orthogonal to the uniaxial direction. The lighting device according to claim 4.
The pair of side blocks has a plurality of screw insertion holes and has a plurality of screw insertion holes.
The main block is a lighting device having a plurality of screw receiving portions that penetrate in the uniaxial direction and screw a plurality of screw members inserted into the plurality of screw insertion holes. The lighting device according to claim 5.
The plurality of screw members are a lighting device having a screw groove portion screwed into the screw receiving portion and a guide shaft portion provided at the tip of the screw groove portion and inserted into the screw receiving portion. The lighting device according to claim 5 or 6.
Further, a plurality of plug members embedded in the plurality of screw insertion holes are further provided.
The plurality of plug members are arranged in multiple stages in the uniaxial direction and have a plurality of annular protrusions that elastically contact the inner peripheral wall surface of the screw insertion hole.

Images