JP7235699B2 - lighting equipment - Google Patents

Description

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

Lights installed on expressways generally use poles to illuminate the road from a high position. there was a problem. Therefore, in recent years, development of a low-position lighting system, in which the lighting equipment is installed at a position about 1 m below the road surface, is underway.

As a low-position illumination device of this type, for example, Patent Document 1 discloses a low-position illumination type illumination device having a pair of leg portions at the bottom of an illumination device body.

JP-A-2002-352608

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

SUMMARY OF THE INVENTION In view of the circumstances as described above, an object of the present invention is to provide a lighting device in which the legs can be stably installed even when there is an obstacle at the installation site.

To achieve the above object, a lighting device according to one aspect of the present invention includes a device main body and a pair of legs.
The apparatus main body has a casing and a light source unit. The casing has a uniaxially elongated bottom wall. The light source unit is arranged inside the casing and emits illumination light.
The pair of leg portions are attached to the bottom wall portion and configured to be slidable in the uniaxial direction.

According to the lighting device, since the pair of legs are configured to be slidable with respect to the bottom wall of the casing, even if there is an obstacle at the installation site, the lighting device can be stably avoided by avoiding the obstacle. can be installed.

The bottom wall portion may have a guide groove parallel to the uniaxial direction, and the pair of legs may have an engaging portion that engages with the guide groove and is relatively movable along the guide groove. good.

The pair of leg portions may be configured to be rotatable about the one axis within 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. may be a uniform molded body.

The pair of side blocks has a plurality of screw insertion holes, and the main block has a plurality of screw receivers into which a plurality of screw members passing through the plurality of screw insertion holes in the uniaxial direction are screwed. may have a part.

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

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

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

1 is a perspective view of a lighting device according to an embodiment of the present invention; FIG. (A) is a front view of the lighting device, (B) is its bottom view, and (C) is its side view. It is an exploded perspective view of the said lighting installation. It is a schematic plan view which shows the installation example to the road of the said illuminating device. It is a perspective view which shows the open state of the window member of the said illuminating device. FIG. 3 is a cross-sectional view taken along the line AA in FIG. 2(A); It is a front view of the screw member for fixation of the main block and side block which form the casing in the said illuminating device. It is the whole view of the plug member embedded in the screw insertion hole of the said side block, (A) is a front view, (B) is a side view. It is a perspective view of the optical unit in the said illuminating device. (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. FIG. 3 is a ray tracing diagram of emitted light (illumination light) in the optical unit. It is a ray tracing diagram explaining a comparative example of composition of the above-mentioned optical unit. FIG. 4 is a ray tracing diagram for explaining one action of the optical unit; (A) is a front view of the leg part in the said illuminating device, (B) is the side view. It is a top view of the said leg. It is a front view explaining one effect|action of the said illuminating device.

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

1 is a perspective view of a lighting device 100 according to an embodiment of the present invention, FIG. 2A is its front view, FIG. 2B is its bottom view, and FIG. 2C is its side view. 3 is an exploded perspective view thereof. In FIGS. 1 and 3, the X-axis, Y-axis, and Z-axis indicate three mutually orthogonal axial directions, with the X-axis corresponding to the left-right direction, the Y-axis corresponding to the front-rear direction, and the Z-axis corresponding to the height direction. .

The illumination device 100 of this embodiment is configured as a low-level illumination lamp installed, for example, on 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 components such as an optical unit 20 , a terminal block 31 , a power supply unit 32 and the like installed inside the casing 110 , and a window member 120 covering the inside of the casing 110 .

FIG. 4 is a schematic plan view showing an installation example of the lighting device 100 on a 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 strip. As shown in the figure, a plurality of the lighting devices 100 are installed on the retaining wall W1 at predetermined intervals in the direction of travel of the vehicle, with the window members 120 facing the central separator W2. The illumination device 100 irradiates the emitted light L from the light source unit 20 through the window member 120 toward the median strip W2 in a direction perpendicular to the traffic lanes Tz1 and Tz2. 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. Lighting device 100 may be installed not only on retaining wall W1 but also on median strip W2.

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

(casing)
Casing 110 has a substantially rectangular parallelepiped shape elongated in the X-axis direction. The casing 110 has a three-part 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 metal material such as 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 a top wall portion S1, a bottom wall portion S2, and a rear wall portion S3, each of which is elongated in the X-axis direction. (See Figure 5). The main block 111 is composed of a molded body having a uniform cross section perpendicular to the X-axis direction, and is manufactured by extrusion molding in this embodiment.

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

In this 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). Accordingly, as shown in FIG. 6, the inside of the apparatus main body 10 can be opened by rotating the window member 120, so that 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 are attached to the bottom wall portion S3 of the casing 110 (main block 111) so that the lower long side portion of the window member 120 can be engaged. The stopper 72 consists of a ring portion attached to the casing 110 side and a hook portion attached to the window member 120 side. engaged. As a result, the window member 120 is prevented from rotating unintentionally.

As shown in FIG. 6, the window member 120 has a window portion W through which light emitted from the optical unit 20 is transmitted. The window W has a rectangular shape elongated in the X-axis direction, and is partially formed in a region facing the optical unit 20 in the Y-axis direction. A 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 inside the casing 110 other than the area corresponding to the optical unit 20 invisible from the outside. It is possible.

As described above, the main block 111 of the casing 110 is formed 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 rear 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 end of the top wall portion S1, and the guide groove G7 is formed at the front end of the bottom wall portion S2.

Each of the guide grooves G1 to G7 is formed over the entire area of the main block 111 in the width direction (X-axis direction). Among these, the guide grooves G1 to G5 have a return portion that forms an opening width larger than the groove width, and the head of a screw member or bolt member (hereinafter also referred to as a fastener) fitted in each guide groove. Engageably formed. The guide grooves G6 and G7 form a housing portion for a seal ring 140 interposed between the main block 111 and the window member 120. As shown in FIG.

The guide grooves G1 to G3 are provided at intervals in the height direction (Z-axis direction) of the rear wall portion S3 of the main block 111. As shown in FIG. 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 positioned at the uppermost stage. Heads of a plurality of fasteners for fixing the power supply unit 32 that supplies power to the optical unit 20 are engaged with the guide groove G2 located in the center. The head of the fastener that fixes the lower end of the terminal block 31 is engaged with the guide groove G3 positioned at the bottom. A nut member N1 (see FIG. 6) is screwed onto the shaft of each of the fasteners to fix the optical unit 20, the terminal block 31, and the power supply unit 32 to the guide grooves G1 to G3, respectively.

Note that the power supply unit 32 is arranged between the optical unit 20 and the terminal block 31 . The terminal block 31 electrically connects the power supply unit 32 and a power cable inserted inside the casing 110 via a 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 guide grooves G4 and G5 are engaged with the heads of the fasteners F2 (see FIG. 6) for fixing the pair of legs 81 and 82 for installing the apparatus main body 10 on the retaining wall W1. A nut member N2 (see FIG. 6) is screwed onto the shaft of each fastener F2 to fix the pair of legs 81 and 82 to the guide grooves G4 and G5, respectively. 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 partial cylindrical shape having an axis in the X-axis direction. A partial cylindrical shape means 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 rear 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 between the bottom wall portion S2 and the rear 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 screw receiving portions for fixing the pair of side blocks 131 and 132 to both ends of the main block 111 in the X-axis direction. It functions as a screw hole into which the screw member P is screwed.

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

The pair of side blocks 131 and 132 have front side ends provided with guide grooves G8 and G9 for accommodating folded portions of both ends of the seal ring 140 in the X-axis direction (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 shown in FIG. Thereby, 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 has a plurality of screw insertion holes M (see FIG. 3) formed at positions corresponding to the respective screw receiving portions H1 to H4 of the main block 111. As shown in FIG. A pair of side blocks 131 and 132 are fixed by a plurality of screw members P inserted through the respective screw insertion holes M. As shown in FIG.

FIG. 7 is a front view of the screw member P as seen from the Y-axis direction. The screw member P has a head 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 through 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 formed deep, the work of fixing the side blocks 131 and 132 with the screw members P can be easily performed.

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

FIG. 8 is an overall view of the plug member T, where (A) is a front view viewed from the Y-axis direction, and (B) is a side view of one side viewed from the X-axis direction. The plug member T is made of an elastic material and formed in a cylindrical shape having an axis 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 projecting portions T2 are arranged in multiple stages in the axial direction (X-axis direction) of the columnar portion T2, and are configured to be able to elastically come into contact with 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 areas between the screw insertion hole M and the plug member T are formed in the axial direction. Intrusion of raindrops into the device main body 10 can be effectively prevented. The number of annular protrusions T2 is not limited to three as illustrated, and may be two or four or more.

The screw insertion holes M of the side blocks 131 and 132 made of molded bodies have a mold draft in the axial direction. 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 and the other end T1 facing the bottom of the screw insertion hole M. It is formed to have a smaller diameter than the side end T2. In this embodiment, a bulging portion T3 projecting 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 T1 on the smaller diameter side can be recognized without depending on the operator's visual observation, misidentification of the insertion direction of the plug member T can be prevented.

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

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

The base member 21 supports an LED substrate 22 that supports a plurality of light emitting elements, and also functions as a reflector that reflects 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 made of a molded body of a metal material such as an aluminum alloy having a uniform cross-sectional shape in the X-axis direction. Made by

As shown in FIG. 6, the base member 21 has a support plate portion 211, a reflecting mirror portion 212, a light shielding plate portion 213, a fixing plate portion 214, and a leg plate portion 215, which are integrally arranged in an X direction. 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 formed integrally with the support plate portion 211 and reflects light emitted from the LED substrate 22 toward the window member 120 . The light shielding plate portion 213 is formed integrally with the support plate portion 211, and restricts the incidence of the above-described emitted light to the window member 120 from a predetermined direction. The fixed plate portion 214 is formed integrally with the support plate portion 211 and fixed to the rear wall portion S3 (the guide groove G1) of the casing 110 via a plurality of fasteners. The leg plate portion 215 is formed integrally with the reflecting mirror portion 212 and holds the posture of the base member 21 installed in the casing 110 by contacting the rear wall portion S3.

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

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 elongated in the X-axis direction, and has a plurality of female screw members 224 screwed to a plurality of fasteners V inserted through the support plate portion 211 of the base member 21 at its central portion. are embedded at predetermined intervals in the X-axis direction. A connector 223 for connection with a wiring cable (not shown) extending from the power supply unit 32 is mounted on one end of the circuit board 221 in the longitudinal direction. In this 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 elements such as LEDs (Light Emitting Diodes), and typically emit white light. The plurality of light emitting elements 222 are arranged in a single row at predetermined intervals along the long side direction (X-axis direction) on the circuit board 221, but may be arranged in multiple rows. The LED substrate 22 is fixed on the support surface 211 a 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 rear wall portion S3 of the casing 110 and a second long side portion L2 facing the window member 120 on the opposite side (FIG. 10). (A)). The LED board 22 has a plurality of light-emitting elements 222 arranged in a biased manner along one long side of the circuit board 221 (see FIG. 11A). It is arranged on the support surface 211a of the support plate portion 211 so as to face the long side L1.

Further, the support plate portion 211 is inclined downward by a predetermined angle from the first long side portion L1 toward the second long side portion L2. set. This can prevent the light-emitting element 222 from being directly viewed from the front of the lighting device 100, and suppress glare when the lighting device 100 is viewed by a vehicle occupant.

The reflecting mirror portion 212 of the base member 21 reflects the emitted light from the light emitting element 222 toward the window member 120 in the Y-axis direction. In this embodiment, the reflector portion 212 has a curved surface 212a that is connected to the first long side portion L1 of the support plate portion 211 and faces the support surface 211a (see FIG. 6). Since the light reflecting surface of the reflecting mirror portion 212 has a curved shape that protrudes toward the rear 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 emitted light (illumination light L) in the optical unit 20. As shown in FIG. As shown in the figure, light emitted from the light emitting element 222 is reflected toward the front of the illumination device 100 by the reflecting mirror portion 212 of the base member 21, passes through the window member 120, and is emitted to the outside. Since the reflecting mirror portion 212 is formed in a curved shape, almost all of the emitted light from the light emitting element 222 can be reflected in the front direction, thereby improving the light utilization efficiency.

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

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 the function of restricting the light emitted from the light emitting element 222 from entering the window member 120 in a predetermined direction. The predetermined direction refers to a direction in which the incident angle with respect to the window member 120 is equal to or greater than a predetermined angle.

As shown in FIG. 13, in the absence of the light shielding plate portion 213, light emitted from the light emitting element 222 in a direction nearly parallel to the support plate portion 211 is sequentially reflected by the window member 120 and the reflecting mirror portion 212, and is reflected by the window member. It may re-enter 120 at a relatively large angle of incidence. In this case, the light reentering the window member 120 is emitted upward from the window member 120 . Since such light causes light leakage to the outside of the road, it is necessary to prevent it as much as possible.

Therefore, in the illumination device 100 of the present embodiment, by providing the light shielding plate portion 213 on the base member 21, as shown in FIG. 14, the light re-entering the window member 120 is reflected downward. Accordingly, it is 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 subjected to mirror finishing or the like, but is preferably colored black from the viewpoint of suppressing the generation of stray light.

The fixed 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 to stand upright in the vertical direction. In the fixed plate portion 214, a plurality of through holes U (see FIG. 10B) through which the shaft portions of the fasteners F1 engaged with the guide grooves G1 of the rear wall portion S3 are inserted are formed at intervals along the X-axis direction. It is provided with The base member 21 (optical unit 20) is fixed to the rear wall portion S3 of the casing 110 by screwing the nut member N1 onto 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 protrude from the rear side of the reflecting mirror portion 212 toward the rear wall portion S3 of the casing 110 . The tip of the leg plate portion 215 is in contact with the inner surface of the rear wall portion S3 (see FIG. 6), thereby holding the fixed posture of the base member 21 (optical unit 20) within the casing 110. FIG.

In the optical unit 20 of this embodiment configured as described above, the support plate portion 211, the reflector portion 212, and the light shielding plate portion 213 of the base member 21 are integrally formed. Stable relative positioning of the optical elements such as the light-emitting element 222 (LED substrate 22), the reflecting mirror portion 212, and the light shielding plate portion 213 mounted on the substrate becomes possible. Therefore, compared to the case where these optical elements are separately fixed to the casing 110, it is possible to suppress the occurrence of variation in the relative positions due to the influence of the individual differences of the optical elements and assembly tolerances, and the positional difference between the optical elements. No fine-tuning may be required.

In particular, in the illumination device 100 that is elongated in one axial direction as in this embodiment, it is necessary to mount a plurality of LED substrates 22 in the longitudinal direction. Here, if the reflecting member and the light shielding member are formed of separate parts for each LED board, the adjustment work described above becomes more complicated, which causes a decrease in workability in assembling the lighting device. In contrast, according to the present embodiment, the base member 21 is formed of a molded body having a uniform cross-sectional shape in the longitudinal direction. The optical elements such as the plate portion 213 can be shared, and the 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.

Moreover, according to the present embodiment, the LED substrate 22, the reflecting mirror portion 212, and the light shielding plate portion 213 can be integrated into the single optical unit 20, so that installation on the casing 110 can be simplified. As a result, assembly workability is further improved, and productivity and work costs can be improved.

Furthermore, according to this embodiment, since the plurality of fasteners F1 for fixing the optical unit 20 are engaged with the guide groove G1 formed in the rear wall portion S3 of the casing 110, the fasteners are not attached to the guide groove G1. By sliding F1, the position of the optical unit 20 with respect to the casing 110 can be arbitrarily adjusted in one axial 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)
Next, the pair of leg portions 81 and 82 installed on the bottom wall portion S2 of the apparatus main body 10 will be described.

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

FIG. 15(A) is a front view of 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. FIG. The legs 81, 82 have a first bracket BL1, a second bracket BL2, and two fasteners F3, F4 connecting therebetween.

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

On the other hand, the horizontal plate portion of the second bracket BL2 is provided with mounting holes 84 that are installed on the upper surface of the installation site (retaining wall W1) and through which anchor bolts (not shown) penetrate. The mounting hole 804 is formed as an elongated hole extending in the longitudinal direction (X-axis direction) of the casing 110 . Therefore, the penetration position of the anchor bolt can be adjusted to any position in the mounting hole 804 in the X-axis direction.

The fasteners F3 and F4 are attached so as to pass through 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 penetrates extends in the front-rear direction (Y-axis direction) of the casing 110 as shown in FIG. 15(B). ) with long holes. For this reason, the second bracket BL2 is configured to be rotatable about the X-axis within a predetermined angle range with respect to the first bracket BL1 (bottom wall portion S2 of the casing 110) around the fastener F3. 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. . As a result, the elevation angle or depression angle of the apparatus main body 10 can be arbitrarily adjusted within the angle range.

By the way, the fastener F2 that fixes the leg portions 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, guide grooves G4 and G5 are formed to extend continuously in the longitudinal direction (X-axis direction) of casing 110 . Therefore, the fastener F2 is configured to be slidable in one axial direction (X-axis direction) along the guide grooves G4 and G5 while the nut member N2 is loosened.

Therefore, according to the present embodiment, there is some kind of obstacle (for example, an arbitrary workpiece or a boundary portion of block pieces 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 positions of the pair of legs 81 and 82 can be adjusted to any position where interference between the obstacle and the legs 81 and 82 can be avoided. Accordingly, 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 evenly slid laterally (in the direction of the arrows in the figure) about the longitudinal center position of the device main body 10, so that each relative position is adjusted. The sliding range can be arbitrarily set according to the length of the guide grooves G4 and G5. Note that the center of the distance between the pair of legs 81 and 82 is not limited to the above example, and the center of the distance between the pair of legs 81 and 82 may be biased to either side of the central position of the apparatus body 10 in the longitudinal direction. Alternatively, the positions of the pair of legs 81 and 82 may be adjusted to a region on one side of the center position.

[Modification]
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 can be applied as a lighting device for advertisements, exhibits, and the like.

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

Claims (7)

a casing having a uniaxially elongated bottom wall;
a window member attached to the casing;
a plurality of light emitting elements;
a support plate portion having a support surface on which the plurality of light emitting elements are mounted; and a reflecting mirror portion formed integrally with the support plate portion and reflecting light emitted from the plurality of light emitting elements toward the window member. a base member installed inside the casing, the base member having a light shielding plate portion integrally formed with the support plate portion and configured to restrict incidence of the emitted light to the window member from a predetermined direction;
a device body having
and a pair of leg portions 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 leg portions has 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 leg portions is configured to be rotatable about the one axis within a predetermined angle range with respect to the bottom wall portion. 4. 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 one axial direction ,
The lighting device, wherein the main block 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,
The main block has a plurality of screw receiving portions into which a plurality of screw members that penetrate in the uniaxial direction and are inserted into the plurality of screw insertion holes are screwed together. The lighting device according to claim 5,
The plurality of screw members each have a screw groove portion that is screwed into the screw receiving portion, and a guide shaft portion that is provided at a tip of the screw groove portion and is inserted through the screw receiving portion. The lighting device according to claim 5 or 6,
further comprising a plurality of plug members embedded in the plurality of screw insertion holes,
The lighting device, wherein the plurality of plug members have a plurality of annular protrusions arranged in multiple stages in the uniaxial direction and elastically contacting an inner peripheral wall surface of the screw insertion hole.

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