JP7445860B2 - lighting equipment - Google Patents

Description

The present disclosure relates to a lighting device that is attached to a ceiling or the like.

Patent Document 1 discloses a lighting device that is attached to a ceiling with a portion of the lighting device extending into the ceiling. This lighting device includes a lamp that has a spherical surface on its outer surface and emits illumination light below the ceiling, and a support portion that rotatably supports the lamp by supporting the spherical surface.

Japanese Patent Application Publication No. 2005-149790

When installing the lighting device described in Patent Document 1, for example, on the ceiling of a passenger cabin of an airplane, an operator attaches the lighting device to the ceiling and then rotates the lighting device to adjust the direction of the lighting device. After that, the worker performs an operation to restrict the rotation of the lamp so that the lamp does not rotate. This operation is performed by rotating a screw passing through the upper part of the support part of the lighting device. As the screw rotates, it advances and hits the lamp, thereby regulating the rotation of the lamp. Here, this screw is located in the ceiling when the lighting device is installed on the ceiling. Therefore, this screw can only be rotated from behind the ceiling. Therefore, it takes time and effort to regulate the rotation of the lamp.

An object of the present disclosure is to provide a lighting device that allows an operator to easily control the rotation of a lamp.

A lighting device according to the present disclosure is a lighting device that is attached to an attachment target with at least a portion extending above the lower surface of the attachment target, and has a spherical surface on an outer surface, and the lighting device has a spherical surface on an outer surface, and the lighting device a lamp that emits illumination light to the lower side of the object to be mounted when mounted on the lamp; a support that rotatably supports the lamp by supporting the spherical surface of the lamp; a rotation regulating section that regulates rotation of the lamp; the rotation regulating section includes an operating member that can be operated from below the mounting object when the lighting device is attached to the mounting object; and an action member that acts on the spherical surface of the lamp in conjunction with an operation on the member to restrict rotation of the lamp.

According to the lighting device according to the present disclosure, since the rotation of the lamp can be controlled from below the object to which it is attached, the operator can easily perform the operation to restrict the rotation of the lamp.

FIG. 1 is a cross-sectional view of a lighting device according to a first embodiment of the present disclosure. FIG. 2 is an exploded perspective view of the lighting device of FIG. 1; FIG. 2 is a perspective view of the illumination device of FIG. 1 seen from below. FIG. 2 is an enlarged perspective view showing a rotation regulating section of the lighting device in FIG. 1. FIG. (A) is a cross-sectional view of the lighting device when the lamp of FIG. 1 is rotated. (B) is a cross-sectional view of the lighting device when the lamp is fixed by the fixing part after (A). FIG. 7 is a diagram showing a cross-sectional view of a lighting device and an elevational view of a mounting member according to a second embodiment of the present disclosure. FIG. 3 is a cross-sectional view of a lighting device according to a third embodiment of the present disclosure.

(First embodiment)
A lighting device 100 according to a first embodiment of the present disclosure will be described with reference to the drawings. Note that the illumination direction side of the lighting device 100 is referred to as "lower", and the opposite side is referred to as "upper". Further, the directions of the two axes orthogonal to the vertical direction are defined as front and rear, and left and right, respectively.

(Configuration of lighting device 100)
As shown in FIGS. 1 and 2, the lighting device 100 includes a lamp 110 that emits illumination light P, and a support section 120 that supports the lamp 110 rotatably around a point C. The lighting device 100 also includes a rotation restriction section 130 that is attached to the support section 120 and restricts rotation of the lamp 110. Such a lighting device 100 is attached to the ceiling 10 above the passenger seats of an airplane and is used as a reading light.

As shown in FIG. 1, the lamp 110 includes a light source 111 that emits illumination light P, and a circuit board 112 on which the light source 111 is mounted. The lamp 110 further includes a lens 113 that collects the illumination light P from the light source 111, and a housing 114 that houses the light source 111 and the circuit board 112 therein. The light source 111 includes a light emitting element such as an LED (Light Emitting Diode). The circuit board 112 includes a drive circuit that drives the light source 111.

As shown in FIGS. 1 and 2, the housing 114 has a shape in which the upper and lower parts are cut out from a spherical shell and the upper opening is closed. The side surface of the housing 114 is made of a spherical surface 114A. The spherical surface 114A is a surface having the upper and lower parts of a sphere centered at point C. In other words, the lamp 110 has, on its outer surface, a spherical surface 114A with the point C as the center of the sphere. Although not shown, the housing 114 is made up of a combination of a plurality of members. A lens 113 is fitted into the lower part of the housing 114. Illumination light P emitted by the light source 111 is emitted via the lens 113.

As shown in FIG. 2, the housing 114 also includes two cylindrical protrusions 114B protruding from a spherical surface 114A that is a side surface thereof. The two protrusions 114B are arranged with point C in between. The two protrusions 114B extend along a direction perpendicular to the optical axis S of the illumination light P. Note that an upward extension of the optical axis S passes through point C. Although details will be described later, the two protrusions 114B function as a rotation stopper to prevent the lamp 110 from rotating about an axis that coincides with the optical axis S.

As shown in FIGS. 1 and 2, the support section 120 includes an accommodation space T that accommodates the lamp 110. As shown in FIGS. The support part 120 rotatably supports the lamp 110 by rotatably housing the lamp 110 in the accommodation space N. The support portion 120 includes a cup-shaped lower member 121 located on the lower side, and an upper member 122 fixed to the lower member 121. The combination of the lower member 121 and the upper member 122 has a shape in which the upper and lower parts are cut out from a spherical shell. Upper member 122 is fixed to lower member 121, for example with adhesive. The lower end surface of the lower member 121 and the upper end surface of the upper member 122 may be provided with unevenness, and the upper member 122 may be fixed to the lower member 121 by fitting or the like.

The lower member 121 and the upper member 122 each have a concave spherical surface that matches the spherical surface 114A of the lamp 110 as an inner surface constituting the accommodation space N. The inner surface of the lower member 121 contacts the spherical surface 114A of the lamp 110 and supports the spherical surface 114A. With this support, the support portion 120 rotatably supports the lamp 110 on its inner surface. Note that the upper end of the inner surface of the lower member 121 is preferably cylindrical rather than spherical so that the lamp 110 can be inserted into the lower member 121 from above. In FIG. 1, the outer surface of the lamp 110 and the inner surfaces of the lower member 121 and the upper member 122 are shown separated from each other to make it easier to understand the structure of the lighting device 100, but in reality, they are in contact with each other. This also applies to FIGS. 5 to 7, which will be described later. The inner surfaces of the lower member 121 and the upper member 122 do not need to be smooth curved surfaces. The inner surface may have a shape that is a combination of a plurality of planes or a plurality of truncated conical side surfaces that are in point or line contact with the surface of the lamp 110. Since the lamp 110 is supported by the lower member 121, the inner surface of the upper member 122 does not need to be in contact with the spherical surface 114A.

As shown in FIG. 2, the lower member 121 has two recesses 121A on its inner surface that face each other across a point C in the front-rear direction. Two protrusions 114B of the lamp 110 are inserted into each of the two recesses 121A. As a result, although the lamp 110 cannot rotate about the optical axis S, it can rotate about two axes that pass through the point C and are perpendicular to the optical axis S. When the lamp 110 is oriented as shown in FIG. 1, the two axes are an axis in the front-rear direction and an axis in the left-right direction. The lamp 110 cannot be rotated about an axis passing through point C and extending vertically in any direction other than that shown in FIG. 1.

The lower member 121 has an opening 121C at the lower end. As shown in FIGS. 1 and 3, the lens 113 of the lamp 110 is exposed through the opening 121C. Therefore, the lamp 110 can emit the illumination light P to the lower side of the ceiling. Further, the worker who installs the lighting device 100 on the ceiling 10 can rotate the lamp 110 by pressing the outside of the exposed lens 113 with his or her finger.

As shown in FIGS. 1 to 3, the support portion 120 also includes a donut plate-shaped flange 123 projecting outward from the lower member 121. As shown in FIGS. The lower member 121 and the upper member 122 of the support section 120 constitute a support section main body, and the flange 123 projects from the support section main body. As shown in FIG. 1, the lighting device 100 is attached to the ceiling 10 by a flange 123. For example, the flange 123 is attached to the ceiling 10 with adhesive, double-sided tape, or the like. Further, the flange 123 may include a through hole (not shown) into which a bolt is inserted, and may be attached to the ceiling 10 with the bolt. By attaching the flange 123 to the ceiling 10, the lighting device 100 is attached to the ceiling 10. As shown in FIG. 1, a portion of the lighting device 100 extends above the lower surface 11 of the ceiling 10.

The rotation regulating section 130 includes a screw 131 as an operation section operated by a user, and a moving member 132 that is screwed into the screw 131 and moves in the vertical direction. The rotation regulating section 130 further includes an action member 133 that moves in the left-right direction as the movable member 132 moves in the vertical direction and acts on the lamp 110 to restrict the rotation of the lamp 110.

The screw 131 is a rotating body that rotates when operated by an operator. The screw 131 is rotated by being operated with a hexagonal wrench. The screw 131 is arranged such that the head 131A faces downward and the rotation axis is oriented along the up-down direction. The screw 131 passes through a through hole 133AA provided in the action member 133 and a through hole 123A provided in the flange 123, and is threadedly engaged with the moving member 132. The screw 131 is operated from the lower side of the ceiling 10 and the lower side of the flange 123 using a hexagonal wrench. This operation causes the screw 131 to rotate around the rotation axis along the vertical direction.

The moving member 132 has a plate shape. The moving member 132 includes a threaded hole 132A into which the screw 131 is threaded. As shown in FIG. 4, the moving member 132 is sandwiched between a pair of convex portions 123B provided on the upper surface of the flange 123. The convex portion 123B prevents the moving member 132 from rotating when the screw 131 rotates. Thereby, when the screw 131 rotates, the moving member 132 moves in the vertical direction, which is the direction of the rotation axis of the screw 131.

As shown in FIG. 1, the movable member 132 has an inclined surface 132B that gradually approaches the screw 131 side from top to bottom at its tip, which is one end on the lamp 110 side. The inclined surface 132B is in contact with a later-described inclined surface 133CA of the action member 133. The inclined surface 132B pushes the inclined surface 133CA of the action member 133 due to the downward movement of the moving member 132.

As shown in FIG. 1, the rotation regulating section 130 may include a spring 134 to prevent the screw 131 screwed into the moving member 132 from falling downward. The spring 134 is sandwiched between the moving member 132 and the flange 123 with the screw 131 inserted as shown in FIG. In FIG. 2, spring 134 is omitted.

As shown in FIGS. 1, 2, and 4, the action member 133 includes a plate-shaped plate portion 133A and a pair of claws 133B protruding upward from the plate portion 133A. The acting member 133 further includes a pressing portion 133C that is connected to the left end of the plate portion 133A and has a mountain-shaped cross section and acts on the lamp 110 to press the lamp as described later. The action member 133 is movable in the left-right direction with respect to the screw 131 and the moving member 132.

The action member 133 is housed in a housing space R formed from the lower member 121 to the flange 123 on the right side of the support portion 120 . The action member 133 is inserted into the accommodation space R from the left side, that is, from inside the lower member 121, as shown in FIG.

As shown in FIGS. 1, 2, and 4, the action member 133 is sandwiched between a pair of inner surfaces R1 that constitute the accommodation space R and are opposed in the front-rear direction. Therefore, the action member 133 is guided to move in the left-right direction by the inner surface R1. The inner surface R1 includes the side inner surface of the recess R2 on the lower surface of the flange 123. The plate portion 133A of the action member 133 is accommodated in the recess R2. A screw 131, which is a bolt, passes through the through hole 133AA of the plate portion 133A. The through hole 133AA has a shape elongated in the left-right direction so that the action member 133 can move in the left-right direction with respect to the screw 131.

A pair of claws 133B of the action member 133 are respectively hooked on a pair of lower portions R3 that form the accommodation space R and are lower than the upper surface of the flange 123. The lower portion R3 extends in the left-right direction. The claw 133B is movable in the left-right direction on the lower portion R3. The pressing portion 133C is supported by an upper surface R4 of the housing space R that is formed by cutting out the lower member 121. The above-mentioned hook and support prevent the action member 133 from falling off from the support portion 120.

The pressing portion 133C includes an inclined surface 133CA that contacts the inclined surface 132B of the moving member 132, and a spherical surface 133CB that faces the spherical surface of the lamp 110. The inclined surface 133CA is inclined in a direction that gradually approaches the right side from top to bottom. The spherical surface 133CB has a concave spherical shape matching the spherical surface 114A, which is the side surface of the lamp 110.

When the moving member 132 moves downward due to the rotation of the screw 131, the inclined surface 132B of the moving member 132 presses the inclined surface 133CA of the pressing portion 133C. By pushing the inclined surface 133CA, the action member 133 moves linearly to the left toward the lamp 110. As a result, the pressing portion 133C of the action member 133 presses the spherical surface 114A of the lamp 110 with the spherical surface 133CB. Since the spherical surface 133CB is a concave spherical surface matching the spherical surface 114A, the pressing portion 133C comes into surface contact with the lamp 110 and presses the lamp 110.

As described above, the action member 133 is accommodated in the accommodation space R, and the screw 131 passes through the action member 133 and the flange 123 and is screwed into the movable member 132. Thereby, the rotation regulating part 130 is attached to the supporting part 120 without falling off.

When the action member 133 moves toward the lamp 110, it moves toward the point C. Here, when the action member 133 moves, the upper end of the spherical surface 133CB of the action member 133 moves toward point C. In other words, the point C is located on the extension of the movement path of the upper end of the spherical surface 133CB when the action member 133 moves.

(Operation of lighting device 100)
(Fixing operation of light fixture 110)
The operation for fixing the lamp 110 will be explained with reference to FIG. 5. The lighting device 100 is attached to the ceiling 10 by a worker. Thereafter, the operator presses the outside of the lens 113 with his finger from below the ceiling 10 to rotate the lamp 110 and adjust the orientation of the lamp 110. FIG. 5A shows a state in which the lamp 110 is rotated. By adjusting the direction of the lamp 110, the position of the illumination area illuminated by the lamp 110 is adjusted. The operator finishes adjusting the orientation of the lamp 110 when the orientation of the lamp 110 becomes the desired orientation.

Thereafter, the operator rotates the screw 131 from below the ceiling 10 using a hexagonal wrench. When the screw 131 rotates, the moving member 132 screwed onto the screw 131 moves downward. Due to this movement, the inclined surface 132B of the moving member 132 pushes the inclined surface 133CA of the action member 133 while moving downward. As a result, the action member 133 moves to the left, that is, toward the lamp 110. The action member 133 moving toward the lamp 110 comes into surface contact with the spherical surface 114A of the lamp 110 and presses the lamp 110 by the pressing portion 133C. The lamp 110 pressed by the pressing portion 133C of the action member 133 is pressed against the surface on the opposite side of the action member 133 among the inner surfaces forming the housing space N of the support portion 120. In this way, the action member 133 presses the lamp 110 against the inner surface of the support portion 120. Thereby, the lamp 110 is fixed so as not to rotate, and the orientation of the lamp 110 is fixed. In the lighting device 100, the rotation of the lamp 110 is regulated in this manner.

Note that the spherical surface 133CB of the action member 133 is formed of a material with a large coefficient of friction. The spherical surface 133CB may be pressed against the spherical surface 114A of the lamp 110 with such force that it will not rotate even if an attempt is made to rotate it with a force of 20 N, which is the average force when a person presses an object with a finger.

(Unfixing operation of light fixture 110)
To readjust the direction of the lamp 110, the screw 131 may be rotated in the opposite direction to the fixing operation described above. This allows the moving member 132 to move upward, and the action member 133 to move away from the lamp 110. Note that in order to allow the action member 133 to move away from the lamp 110 smoothly, the action member 133 may be biased in the direction away from the lamp 110 by a spring or the like.

(Effects of the first embodiment)
In the first embodiment, the lighting device 100 is provided with a rotation regulating section 130. The rotation regulating unit 130 acts on a screw 131 which is an operation member that can be operated from the lower side of the ceiling 10 and on the spherical surface 114A of the light fixture 110 in conjunction with the operation of the screw 131, thereby regulating the rotation of the light fixture 110. A member 133 is provided. Therefore, the operation for regulating the rotation of the lamp 110 can be performed from the lower side of the ceiling 10 to which the lighting device 100 is attached, that is, from the side in the irradiation direction of the illumination light P. Therefore, there is no need to perform the operation for regulating the rotation of the lamp 110 from the ceiling, which is above the lower surface 11 of the ceiling 10. Therefore, the operation for regulating the rotation of the lamp 110 can be easily performed. In particular, the head 131A of the screw 131 is operated while being positioned below the flange 123 attached to the ceiling 10. Therefore, the operation for regulating the rotation of the lamp 110 can be easily performed.

Further, in the first embodiment, the action member 133 moves linearly to the left toward the lamp 110 in conjunction with the operation of the screw 131 having a rotation axis extending in the vertical direction. Then, the action member 133 presses the lamp 110 against the inner surface of the support section 120 that constitutes the accommodation space N. Thereby, the lamp 110 is firmly fixed by a simple operation of rotating the screw 131.

Further, in the rotation restricting portion 130, the head of the screw 131 is disposed at a position below the flange 123, and the action member 133 has an inclined surface 133CA that contacts the moving member 132 at a position above the flange 123. Furthermore, the inclined surface 133CA is inclined in a direction closer to the screw 131 as it goes downward. The moving member 132 is moved downward by the rotation of the screw 131, thereby pushing the inclined surface 133CA and linearly moving the action member 133 leftward toward the lamp 110. With such a configuration, the mechanism for moving the action member 133 can be disposed above the flange 123, and the appearance of the lighting device 100 can be improved.

In the first embodiment, the action member 133 moves in a direction toward point C, which is the center of the spherical surface 114A of the lamp 110, and contacts the spherical surface 114A, so when the action member 133 contacts the lamp 110, Unintentional rotation of the lamp 110 is less likely to occur.

(Second embodiment)
As shown in FIG. 6, a lighting device 200 according to the second embodiment includes a support section 220 and a rotation restriction section 230 instead of the support section 120 and rotation restriction section 130 of the first embodiment. Note that a description of other configurations of the lighting device 200 will be omitted. In FIG. 6, common or equivalent members in the first embodiment and the second embodiment are given the same reference numerals. Components in the first embodiment and the second embodiment that correspond to each other have the same names and different symbols.

The support section 220 includes a lower member 221, an upper member 122, and a flange 223. The lower member 221 and the flange 223 are not provided with an accommodation space R. The lower member 221 includes a cylindrical cylindrical portion 221A at the bottom. The lower part of the lamp 110 is exposed from the inside of the cylindrical portion 221A. The outer surface of the cylindrical portion 221A is provided with a plurality of recesses 221AA at equal intervals along the circumferential direction of the outer surface. Other configurations of the lower member 221 and flange 223 are similar to those of the lower member 121 and flange 223 of the first embodiment. For example, the lower member 221 includes a recess (not shown) equivalent to the recess 121A.

In the second embodiment, the rotation restricting portion 230 is an attachment member that is attached to the cylindrical portion 221A of the support portion 220 in a snap manner. The rotation regulating section 230 includes an operating member 231 that is operated by an operator, and an action member 233 that is integrally molded with the operating member 231 and has a cylindrical shape and acts on the lamp 110 . The operating member 231 includes a flange 231A projecting from the lower end of the cylindrical action member 233, and four claws 231B projecting upward from the flange 231A. The upper surface 233A of the action member 233 has a spherical shape matching the spherical surface 114A of the lamp 110. Therefore, the upper surface 233A is in surface contact with the spherical surface 114A.

The operator holds the flange 231A of the operating member 231 of the rotation regulating part 330, inserts the action member 233 into the cylindrical part 221A of the support part 220 from below, and hooks the claw 231B into the recess 221AA of the cylindrical part 221A. By this operation, the rotation restricting section 230, which is an attaching member, is attached to the support section 220 in a snap manner. When the rotation regulating section 230 is attached to the support section 220, the upper surface 233A of the action member 233 comes into surface contact with the spherical surface 114A of the lamp 110. As a result, the upper surface 233A is pressed against the spherical surface 114A of the lamp 110, and the lamp 110 is pressed by the upper surface 233A against the inner surface constituting the housing space N of the support section 220. In this way, the action member 233 functions as a pressing portion that presses the lamp 110 against the inner surface of the support portion 320. The rotation of the lamp 110 is restricted by the pressing by the action member 233.

Also in the second embodiment, the operation for regulating the rotation of the lamp 110 can be easily performed by operating the operation member 231 of the rotation regulating section 230 from below the ceiling 10 . Moreover, the rotation of the lamp 110 can be regulated with a simple configuration. Furthermore, the rotation of the lamp 110 can be regulated by a simple snap-type operation.

(Third embodiment)
As shown in FIG. 7, a lighting device 300 according to the third embodiment includes a support section 320 and a rotation restriction section 330 instead of the support section 220 and rotation restriction section 230 of the second embodiment. Note that a description of other configurations of the lighting device 300 will be omitted. In FIG. 7, common or equivalent members in the first and second embodiments and the third embodiment are given the same reference numerals. Components that correspond to each other in the first and second embodiments and the third embodiment have the same names and different symbols.

The support section 320 includes a lower member 321, an upper member 122, and a flange 223. The lower member 321 includes a cylindrical portion 321A at the bottom, which has a cylindrical shape and is threaded on the inner surface. The lower part of the lamp 110 is exposed from the inside of the cylindrical portion 321A. Other configurations of the lower member 321 are similar to the lower members 121, 221 of the first and second embodiments. For example, the lower member 321 includes a recess (not shown) equivalent to the recess 121A.

In the third embodiment, the rotation restricting portion 330 is an attachment member that is screwed onto the cylindrical portion 321A of the support portion 320. The rotation regulating section 330 includes an operating member 331 that is operated by an operator, and an operating member 333 that is integrally molded with the operating member 331 and has a cylindrical shape and acts on the lamp 110 . The operating member 331 consists of a flange extending from the lower end of a cylindrical operating member 333. The outer surface of the action member 333 is threaded and is screwed into the cylindrical portion 321A of the support portion 320. The upper surface 333A of the action member 333 has a spherical shape matching the spherical surface 114A of the lamp 110. Therefore, the upper surface 333A is in surface contact with the spherical surface 114A.

The operator holds the operation member 331 of the rotation regulating section 330 and inserts the action member 333 into the cylindrical section 321A of the support section 320 from below. Further, the operator rotates the rotation restricting portion 330 and threads the action member 333 into the cylindrical portion 321A. Through this operation, the rotation restricting section 330 is attached to the supporting section 320 by screwing. When the rotation regulating section 330 is attached to the support section 320, the upper surface 333A of the action member 333 comes into surface contact with the spherical surface 114A of the lamp 110. Therefore, the upper surface 333A is pressed against the spherical surface 114A of the lamp 110, and the lamp 110 is pressed by the upper surface 333A against the inner surface constituting the accommodation space N of the support section 320. In this way, the action member 333 functions as a pressing portion that presses the lamp 110 against the inner surface of the support portion 320. The rotation of the lamp 110 is restricted by the pressing by the action member 333. Note that the lamp 110 does not rotate around an axis that extends in the vertical direction from the point C by the protrusion 114B, as in the first embodiment. Therefore, even if the lamp 110 rotates with the operating member 333 of the rotation regulating section 330 in contact with the lamp 110, it is difficult to rotate with the lamp 110.

According to the third embodiment as well, the rotation of the lamp 110 can be easily controlled by operating the operating member 331 of the rotation regulating section 330 from below the ceiling 10 . Moreover, the rotation of the lamp 110 can be regulated with a simple configuration. Furthermore, the rotation of the lamp 110 can be restricted by a simple operation of rotating the rotation restriction section 330.

(Modified example)
The first to third embodiments described above can be modified as appropriate. For example, the lighting devices 100, 200, and 300 may be attached to an attachment target such as a wall. Note that in this case as well, the direction in which the lighting device 100 and the like illuminate is downward. For this reason, the vertical direction in which the wall extends is defined as the above-mentioned front-back direction or left-right direction, and the horizontal direction is defined as the up-down direction. The shapes etc. of the lighting devices 100, 200, 300 can be changed as appropriate.

When the lighting devices 100, 200, and 300 are attached to an attachment target such as the ceiling 10 or a wall, all of them may enter inside the attachment target. For example, the entire lighting device 100, 200, 300 is positioned above the lower surface 11 of the ceiling 10 in a state where the screw 131 or the operation member 231 or 331 can be operated through an opening provided in the ceiling 10. You may.

(Lighting device disclosed by the present disclosure)
The configurations of lighting devices exemplifying the first to third embodiments and modifications described above are listed below.

(1) A lighting device (e.g., lighting device 100, 200, 300) is attached to an object to be mounted with at least a portion thereof penetrating above the lower surface (e.g., lower surface 11) of the object to be mounted (e.g., ceiling 10). Installed. The lighting device has a spherical surface (e.g., spherical surface 114A) on its outer surface, and includes a lamp (e.g., lamp 110) that emits illumination light P to the lower side of the object when the lighting device is attached to the object. The lighting device includes a support part (eg, support part 120) that rotatably supports the lamp by supporting the spherical surface of the lamp. The lighting device includes a rotation regulating section (eg, rotation regulating section 130, 230, 330) that is attached to the support section and regulates rotation of the lamp. The rotation regulating section includes operating members (for example, screws 131, operating members 231, 331) that can be operated from below the mounting target when the lighting device is mounted on the mounting target. The rotation regulating section includes an operating member (for example, operating member 133, 233, 333) that acts on the spherical surface of the lamp in conjunction with the operation of the operating member to restrict the rotation of the lamp. Thereby, the operation for regulating the rotation of the lamp can be performed from the lower side of the object to which the lighting device is attached, and the operation can be performed easily.

(2) The support part includes a support body (for example, a combination of the lower members 121, 221, 321 and the upper member 122), and a flange (for example, the flange 123, 223) that protrudes from the support body and is attached to the attachment target. ) and may also be provided. The operating member may be configured to be operable from below the flange. This makes it easier to operate the operating member.

(3) The support portion may have a housing space (for example, housing space N) that houses the lamp. The operating member may include a rotating body (for example, a screw 131) whose rotating shaft extends in the vertical direction and is rotated by a rotating operation from below the attachment target. The action member (for example, the action member 133) is configured to move linearly in the left-right direction orthogonal to the up-down direction in conjunction with the rotation of the rotating body, and to press the lamp against the inner surface constituting the accommodation space of the support section. It's okay. With this configuration, the lamp can be firmly fixed so as not to rotate by a simple operation of rotating the rotating body.

(4) Comprising a support body (for example, a combination of the lower members 121, 221, 321 and the upper member 122) and a flange (for example, the flange 123) that protrudes from the support body and is attached to the attachment target. It's okay. Further, the operation member is a screw (for example, the screw 131) whose head (for example, the head 131A of the screw 131) is located below the flange, passes through the flange, and is rotated by operation from the lower side of the object to be attached. There may be. The rotation regulating portion includes a moving member (for example, moving member 132) that is screwed onto the screw at a position above the flange and moves in the vertical direction, which is the direction in which the rotation axis of the screw extends, as the screw rotates. It's okay. The action member (for example, action member 133) may have an inclined surface (for example, inclined surface 133CA) that contacts the moving member at a position above the flange and is inclined in a direction that approaches the screw side as it goes downward. good. The moving member may be configured to move downward by rotation of the screw, thereby pushing the inclined surface and moving the action member linearly in a direction perpendicular to the rotation axis and toward the lamp. With the simple operation of rotating a screw, you can firmly fix the light fixture to prevent it from rotating. Furthermore, by arranging the mechanism for moving the action members including the moving members and the like above the flange, the appearance of the lighting device can be improved.

(5) The acting member may be configured to act on the lamp by moving in a direction toward the center of the spherical surface of the lamp (for example, point C). This can make it difficult for the lamp to rotate unintentionally.

(6) The rotation regulating section (for example, the rotation regulating section 230, 330) is supported by operation on the operating member, which has the operating member (for example, the operating member 231, 331) that is operated from the lower side of the attached object. It may also be an attachment member attached to the section. The support portions (for example, the support portions 220 and 320) may have a housing space (for example, a housing space N) that accommodates the lamp. The mounting member may include a pressing portion as an action member (for example, action members 233, 333) that presses the lamp against the inner surface constituting the housing space of the support portion when the mounting member is attached to the support portion. good. With such a configuration, rotation of the lamp can be regulated with simple operation and a simple configuration.

(7) The rotation regulating section (for example, the rotation regulating section 230) may be configured to be attached to the support section by a snap type. This makes it possible to control the rotation of the lamp with a simple snap-type operation.

(8) The rotation regulating section (for example, the rotation regulating section 330) may be configured to be attached to the support section by screwing. Thereby, the rotation of the lamp can be easily restricted by the screwing operation.

10 ceiling, 11 bottom surface, 100, 200, 300 lighting device, 110 light fixture, 114 housing, 120, 220, 320 support section, 130, 230, 330 rotation regulating section, 131 screw (operation member), 231, 331 operation member , 132 Moving member, 133, 233, 333 Action member, 133C Pressing portion, 132B, 133CA Inclined surface, 114A, 133CB Spherical surface, C Point, P Illumination light, N, R Accommodation space, S Optical axis.

Claims (8)

A lighting device that illuminates the lower side and is attached to the object to be attached with at least a portion extending above the lower surface of the object to be attached on the opposite side in the illumination direction ,
a lamp having a spherical outer surface and emitting illumination light to the lower side of the attachment target when the lighting device is attached to the attachment target;
a support part that rotatably supports the lamp by supporting the spherical surface of the lamp;
a rotation regulating section attached to the support section and regulating rotation of the lamp;
The rotation regulating portion includes an operating member that can be operated from a lower side of the mounting target when the lighting device is mounted on the mounting target, and a direction toward the spherical surface of the lamp in conjunction with the operation of the operating member. an action member that moves linearly to restrict rotation of the lamp;
lighting equipment. The support part includes a support part main body, and a flange that extends from the support part main body and is attached to the attachment target,
The operating member is operable from below the flange.
The lighting device according to claim 1. The support part has a housing space that houses the lamp,
The operating member includes a rotating body whose rotating shaft extends in the vertical direction and is rotated by a rotational operation from below the attachment target,
The action member moves linearly in a left-right direction perpendicular to the up-down direction in conjunction with the rotation of the rotating body, and presses the lamp against an inner surface of the support portion that constitutes the accommodation space.
The lighting device according to claim 1 or 2. The support part has a support part main body, and a flange that extends from the support part main body and is attached to the attachment target,
The operating member is a screw whose head is located below the flange, passes through the flange, and is rotated by the operation from below the attachment target,
The rotation regulating part includes a moving member that is screwed into the screw at a position above the flange and moves in the vertical direction, which is the direction in which the rotation axis of the screw extends, as the screw rotates,
The action member contacts the moving member at a position above the flange, and has an inclined surface that is inclined in a direction that approaches the screw side as it goes downward;
The moving member moves downward by rotation of the screw to push the inclined surface and linearly move the action member in a direction perpendicular to the rotation axis and toward the lamp;
The lighting device according to claim 3. The acting member acts on the lamp by moving in a direction toward the center of the spherical surface of the lamp.
The lighting device according to any one of claims 1 to 4. The rotation regulating portion is an attachment member that is attached to the support portion by an operation on the operation member, the rotation restriction portion having the operation member that is operated from the lower side of the attachment target,
The support part has a housing space that houses the lamp,
The attachment member includes, as the action member, a pressing portion that presses the lamp against the inner surface of the support portion that constitutes the housing space when the attachment member is attached to the support portion.
The lighting device according to claim 1. The rotation regulating part is attached to the supporting part by a snap type.
The lighting device according to claim 6. The rotation regulating part is attached to the supporting part by screwing.
The lighting device according to claim 6.

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