JP2010262837A - Luminaire and member for luminaire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a luminaire capable of preventing drop of a louver from a luminaire body, and a member for the luminaire. <P>SOLUTION: The luminaire 1 is provided with a luminaire body 2, a louver 3, an axis member 4, an axis retaining part, a hooked part 6a and a hooking part 6b. The axis member and the axis retaining part support the louver 3 in free rotation to the luminaire body 2 while the hooking part 6b is removed from the hooked part 6a, the luminaire body 2 and the louver 3 include a locking means for locking the rotation of the louver 3 on a first surface 7a crossing a rotation axis of the louver 3 on an inner surface of the luminaire body 2 or a second surface 7b crossing a rotation axis of the louver 3 on an outer surface of the latter 3. Preferably, the locking means locks by contacting a first protrusion 8a fitted to the first surface 7a with a second protrusion 8b fitted to the second surface 7b. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a lighting fixture including a lighting fixture member that controls light distribution of a lamp, and the lighting fixture member.

  A lighting fixture in which a louver that controls light distribution from a lamp is attached to a lighting fixture body is used. In such a lighting fixture, the louver is attached so as to cover the rectangular opening on the lower surface of the lighting fixture body. Therefore, it is necessary to remove the louver when replacing the lamp. However, if the louver is removed from the luminaire main body every time the lamp is replaced, it takes time to replace the lamp. Especially when the luminaire is mounted at a high place, it is necessary to replace the lamp by placing the removed louver in a safe place, and then go back to get the louver.

  In view of this, a device has been devised in which the louver is rotatably attached to the luminaire body so that the lamp can be replaced without removing the louver from the luminaire body. In this luminaire, the louver and the luminaire main body are provided with a portion serving as a shaft, and the other portion is provided with a hooking portion such as a hook member. The portion serving as the axis is formed by a long hole or the like so that the louver can be moved in the horizontal direction with respect to the lighting fixture body. When exchanging the lamp, the louver is moved in the horizontal direction with respect to the lighting fixture, so that the hooking portion such as the hooking member is removed. Then, the louver rotates around the shaft portion, and the lower surface of the luminaire main body is opened. The lighting fixture having such a structure can be easily operated without the need to remove the louver when replacing the lamp and without the need for tools such as a screwdriver. Then, the lighting fixture using the said structure is proposed.

  For example, Patent Literature 1 introduces a lighting fixture in which a light control member can be easily attached and detached with a frame as thin as possible. The lighting fixture includes an fixture body having an opening and storing a lamp in the opening, a louver having an outer frame and housed inside the opening, and an opening surface of the louver at one end side of the louver. The shaft support that holds the louver on the instrument body so that the opening can be opened and closed, and the other end of the louver is attached to and detached from the instrument body by moving the louver substantially parallel to the opening surface. And a mounting portion that can be freely mounted.

  Patent Document 2 introduces a fluorescent lamp apparatus that can easily open and close the louver without attaching or detaching the louver. In this fluorescent lamp fixture, if the whole louver is lifted and then moved horizontally, the locking between the locking notch and the locking receiving hole is released, and the horizontal support shaft moves to the horizontal part, allowing the louver to tilt. The arrangement and shape of the locking notch, the locking receiving hole, the L-shaped slit, and the lateral support shaft are determined so that

  Patent Document 3 has a long hole that receives a shaft attached to the instrument at one end, and includes a shaft holding portion that holds the optional member so as to be slidable in the long diameter direction of the long hole. An optional member of a lighting fixture having a hook portion having a protrusion hooked to a slit at an end portion of the fixture at the end portion is introduced.

  Patent Document 4 describes a lighting fixture in which the fixture body has a pair of protruding pieces and a pair of pins, and the louver has a locking piece and a long hole. In this lighting fixture, the elongated hole has the fixed position where the pin is arranged in a state where the locking piece and the protruding piece are engaged, and the pin is arranged in a state where the engagement of the locking piece and the protruding piece is released. The rotation position is extended so as to be connected by a longitudinal guide portion and a lateral guide portion having a width dimension through which the pin passes.

JP 2005-038790 A JP 2007-012577 A Japanese Patent Laid-Open No. 2007-200789 JP 2008-123987 A

  The above-described louver mounting structures for lighting fixtures described in Patent Documents 1 to 4 each have a shaft portion at one end of the lighting fixture body or the louver and a hook or locking portion at the other end. It is. Many of the hooks or locking portions have a structure that can be easily removed so that they can be easily operated when replacing the lamp. However, a structure that can be easily removed can be said to be a structure that is easy to come off, and if it is not hooked or locked correctly, it can be assumed that the structure can be removed by vibration or the like. In this case, since the shaft portion is fixed to the luminaire main body, the louver does not fall off the luminaire main body. However, when the hook portion is removed, the louver rotates vigorously around the shaft portion, so that the luminaire main body and the louver frame may be damaged or deformed.

  Also, when replacing the lamp of a lighting fixture attached to the ceiling, the hook is usually removed after removing the hooking portion while supporting the louver. Each of the louver mounting structures for lighting fixtures described in Patent Documents 1 to 4 has one hook or locking portion. For this reason, when the hand is removed due to carelessness, or when the hooked portion of the louver is removed before it is supported by the hand, the louver falls over the head while rotating.

  This invention is made | formed in view of the said situation, and aims at provision of the lighting fixture and the member for lighting fixtures which can prevent the dropout of the louver from a lighting fixture main body double.

A lighting fixture according to a first aspect of the present invention includes a lighting fixture main body having an opening, a louver attached to the opening, a shaft member that rotatably supports the louver with respect to the lighting fixture main body, A shaft holding portion for holding the shaft member, a hook portion for hooking the louver to the lighting fixture body, and a hook portion that can hook the hook portion,
The shaft member and the shaft holding portion support the louver so as to be rotatable with respect to the luminaire main body in a state where the hook portion is removed from the hook portion.
The luminaire main body and the louver include a locking unit that locks the rotation of the louver between an outer surface that the louver rotates and an inner surface of the luminaire main body.

The lighting fixture member according to the second aspect of the present invention is attached to a lighting fixture body having an opening,
By the hook part that can be hooked to the hook part and the hook part, it is hooked to the lighting fixture body,
With the hook part removed from the hook part, the shaft member and the shaft holding part that holds the shaft member are supported rotatably with respect to the lighting fixture body.
A locking means for locking the rotation of the lighting fixture member is provided on the outer surface of the lighting fixture member.

  According to the lighting fixture and the lighting fixture member of the present invention, it is possible to prevent the louver from dropping off from the lighting fixture body.

It is a disassembled perspective view which shows the structural example of the lighting fixture which concerns on Embodiment 1 of this invention. FIG. 3 is a perspective view illustrating a configuration example of a lighting fixture according to Embodiment 1. 3 is a front view illustrating a configuration example of a lighting fixture according to Embodiment 1. FIG. FIG. 3 is a left side view illustrating a configuration example of a lighting fixture according to Embodiment 1. It is sectional drawing cut | disconnected by the A-A 'line | wire of FIG. It is an enlarged view of R part of FIG. It is sectional drawing cut | disconnected by the B-B 'line | wire of FIG. It is a front view which shows the state which the louver of the lighting fixture which concerns on Embodiment 1 has latched. It is a left view which shows the state which the louver of the lighting fixture which concerns on Embodiment 1 has latched. It is sectional drawing cut | disconnected by the C-C 'line | wire of FIG. It is an enlarged view of S part of FIG. FIG. 10 is a cross-sectional view taken along line D-D ′ of FIG. 9. FIG. 10 is a front view illustrating a configuration example of a lighting fixture according to Embodiment 2. It is a left view which shows the structural example of the lighting fixture which concerns on Embodiment 2. FIG. It is sectional drawing cut | disconnected by the E-E 'line | wire of FIG. It is an enlarged view of T part of FIG. It is sectional drawing cut | disconnected by the F-F 'line | wire of FIG. It is a front view which shows the state which the louver of the lighting fixture which concerns on Embodiment 2 has latched. It is a left view which shows the state which the louver of the lighting fixture which concerns on Embodiment 2 has latched. It is sectional drawing cut | disconnected by the G-G 'line | wire of FIG. It is an enlarged view of U part of FIG. It is sectional drawing cut | disconnected by the H-H 'line | wire of FIG. FIG. 10 is a front view illustrating a configuration example of a lighting fixture according to Embodiment 3. It is a left view which shows the structural example of the lighting fixture which concerns on Embodiment 3. FIG. It is sectional drawing cut | disconnected by the I-I 'line | wire of FIG. It is sectional drawing cut | disconnected by the J-J 'line | wire of FIG. It is a front view which shows the state which the louver of the lighting fixture which concerns on Embodiment 3 has latched. It is a left view which shows the state which the louver of the lighting fixture which concerns on Embodiment 3 has latched. It is sectional drawing cut | disconnected by the K-K 'line | wire of FIG. It is sectional drawing cut | disconnected by the L-L 'line | wire of FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals. In addition, the ratio of the component drawn in the figure is not an actual ratio. In particular, the protrusions and holes are enlarged to facilitate understanding.

(Embodiment 1)
FIG. 1 shows an exploded perspective view of a lighting fixture according to Embodiment 1 of the present invention. In addition, the lighting fixture 1 which concerns on this invention may be any of the attachment type to a ceiling surface etc., or an embedded type. The luminaire 1 includes a luminaire body 2, a louver 3, and a shaft member 4. The luminaire main body 2 has a rectangular opening on the lower surface. The shape of the louver 3 is in conformity with it so that it can be attached to the opening. In addition, in order to rotate the louver 3 with respect to the luminaire main body 2, the outer frame of the louver 3 is formed to be smaller than the inner frame of the opening of the luminaire main body 2. The shaft member 4 includes a shaft portion 4a and a knob portion 4b. Moreover, the shaft member 4 fixes the lighting fixture main body 2 and the louver 3, and is comprised from the screw, the volt | bolt, and the nut, for example.

  The luminaire main body 2 is composed of a metal housing that houses a lighting circuit and a connector (not shown). Although not shown, a lamp is attached to the socket portion of the luminaire body 2. In addition, a reflector or the like may be provided. The lighting fixture main body 2 is formed with a first shaft holding portion 5a, a hooking portion 6a, and a first protrusion 8a. The first shaft holding portion 5 a is a hole through which the shaft portion 4 a of the shaft member 4 is inserted, and is formed near one end of the two first surfaces 7 a of the lighting fixture body 2. The first surface 7a will be described in detail later.

  The hook 6a is a long hole whose height is larger than the width so that the hook 6b can be inserted and hooked. Two hooks 6 a are formed on the left side of the other end of the luminaire body 2. Although described in detail later, the first protrusion 8a is a substantially U-shaped protrusion facing inward of approximately 1 mm, and the tip thereof is chamfered. The first protrusion 8a extends below the two first surfaces 7a along the lower side with a length slightly shorter than the lower side.

  The louver 3 includes a louver frame 3a composed of two rectangular plates and a plurality of louver pieces 3b arranged at a predetermined interval. Although details are not shown, for example, only the central axis of each louver piece 3b is fixed to the louver frame 3a so that the direction of the louver piece 3b can be changed with respect to the louver frame 3a. The louver frame 3a is formed with a second shaft holding portion 5b, a hooking portion 6b, and a second protruding portion 8b.

  The 2nd axis | shaft holding | maintenance part 5b is a long hole with the width | variety into which the axial part 4a of the axial member 4 can be inserted is larger than height. The second shaft holding portion 5b is formed near one end of the two second surfaces 7b of the louver frame 3a. The second surface 7b will be described later in detail. The hooking portion 6b has a shape protruding partly so as to be hooked on the hooking portion 6a, and has an L-shaped hook shape so as not to come off naturally. The hook 6b is formed at the other end of the louver frame 3a. The second protrusion 8b is a substantially L-shaped protrusion that faces the outside of approximately 1 mm, which will be described in detail later. The second protrusion 8b extends along the upper ends of the two second surfaces 7b with a length slightly shorter than the upper side.

  FIG. 2 shows a perspective view of the lighting apparatus according to Embodiment 1. FIG. FIG. 3 shows a front view of the lighting apparatus according to Embodiment 1. FIG. FIG. 4 is a left side view of the lighting apparatus according to Embodiment 1. That is, the luminaire 1 of FIGS. 2 to 4 shows a state in which the louver 3 is attached to the luminaire main body 2 shown in FIG. 1 and the shaft member 4 is fixed to the luminaire main body 2. At this time, the shaft portion 4 a of the shaft member 4 is inserted into the second shaft holding portion 5 b of the louver 3 and the first shaft holding portion 5 a of the lighting fixture body 2, and the shaft member 4 is fixed to the lighting fixture body 2. The shaft member 4 is fixed so that the louver 3 can be moved in the horizontal direction with respect to the luminaire main body 2 and can be rotated about the shaft member 4 as an axis. A structure in which a long hole is formed on the side of the luminaire main body 2 and the shaft member 4 is fixed to the louver 3 may be used.

  As shown in FIGS. 2 to 4, the hook 6 b of the louver 3 is hooked on the hook 6 a of the luminaire body 2. Since a lamp (not shown) is mounted on the luminaire body 2, light is emitted downward from the opening, but the light distribution is controlled by changing the direction of the louver piece 3 b of the louver 3. Can do.

  FIG. 5 shows a cross-sectional view of the luminaire taken along the line A-A ′ of FIG. 3. FIG. 6 shows an enlarged view of a portion R in FIG. FIG. 7 is a cross-sectional view of the lighting fixture taken along line B-B ′ in FIG. 4. About the louver 3 in these figures, only the louver frame 3a is drawn, and the louver piece 3b is omitted.

  As described above, the first protrusions 8a having a height of about 1 mm are formed on the two first surfaces 7a of the lighting fixture body 2 along the lower side. As shown in FIG. 6, the first protrusion 8a has a U-shape, but the tip of the protrusion is chamfered. Similarly, L-shaped second protrusions 8b having a height of about 1 mm are formed along the upper ends of the two second surfaces 7b of the louver 3. The positional relationship between these protrusions is set so that the vertices of the two protrusions are slightly displaced and the vertices overlap each other as shown in FIG.

  When rotating the louver 3, first, the hook 6b is removed from the hook 6a, and the louver 3 is moved along the long hole of the second shaft holding part 5b. Further, the louver 3 is rotated around the shaft member 4. That is, it is moved and rotated in the X direction shown in FIG. At this time, the louver 3 rotates with Y shown in FIG. 2 as a rotation axis. The two first surfaces 7a of the luminaire main body 2 and the two second surfaces 7b of the louver 3 are orthogonal to the rotation axis Y. That is, the 1st surface 7a in which the 1st projection part 8a is formed is a surface orthogonal to the rotating shaft Y of the louver 3 of the lighting fixture main body 2 inner surface. Further, the second surface 7b on which the second protrusion 8b is formed is a surface orthogonal to the rotation axis Y of the louver 3 on the outer surface of the louver 3. Since the first protrusions 8a or the second protrusions 8b are formed on these surfaces so that the vertices overlap with each other, these protrusions come into contact with each other while the louver 3 is rotating. Locks.

  FIG. 8: shows the front view of the state which the louver of the lighting fixture which concerns on Embodiment 1 has latched. FIG. 9 is a left side view of the state where the louver is locked. FIG. 10 shows a cross-sectional view of the luminaire taken along line C-C ′ of FIG. 8. FIG. 11 shows an enlarged view of a portion S in FIG. FIG. 12 is a cross-sectional view of the lighting fixture taken along line D-D ′ in FIG. 9. Similarly, in these figures, only the louver frame 3a is drawn for the louver 3 in the figure, and the louver piece 3b is omitted.

  As shown in FIGS. 8 to 12, the first protrusion 8 a of the luminaire body 2 and the second protrusion 8 b of the louver 3 come into contact with each other at the end away from the shaft portion, and the louver 3 rotates. The movement is stopped. This is because the vertices of the first protrusion 8a and the second protrusion 8b overlap as shown in FIG. Furthermore, it is because the frictional force between the protrusions works. In addition, when it is desired to completely rotate the louver 3, it can be easily unlocked by applying a force in the rotating direction. This is because the tip of the first protrusion 8a is chamfered. The same applies to the case where the louver 3 is rotated from below to above to cover the opening of the luminaire body 2 again.

  Thus, according to the lighting fixture 1 of this Embodiment 1, the drop-off | omission of the louver from a lighting fixture main body can be prevented double. That is, the louver does not fall due to vibration or the like even when the hooking portion is not correctly hooked. In addition, the louver does not fall overhead due to carelessness when replacing the lamp. In addition, since the locking portion can be easily removed by applying a force in the rotation direction, a tool such as a screwdriver is not necessary when replacing the lamp.

  Moreover, the lighting fixture which can rotate such a louver needs to have a clearance gap between a lighting fixture main body and a louver frame on the structure to rotate, and this clearance gap causes light leakage. There is a case. However, in the first embodiment, as shown in FIG. 5 and FIG. 6, the first surface or the second surface in the state where the first protrusion 8 a and the second protrusion 8 b overlap each other. It extends in each major axis direction. Therefore, light leakage due to the gap between the luminaire body and the louver frame does not occur, and there is no need for secondary processing such as packing for preventing light leakage.

  In the first embodiment, for the purpose of preventing light leakage, the first protrusion is processed along the lower side of the first surface to a length slightly shorter than the lower side, and the second protrusion is formed as the second protrusion. It was processed with a length slightly shorter than the upper side along the upper end of the surface. However, in consideration of the convenience of removing the louver, the first protrusion and the second protrusion may be formed only at the contact location. Further, in consideration of locking stability, the second protrusion of the louver may be inclined and extended so as to contact over the entire protrusion at the time of contact.

  Moreover, the position and shape of the 1st projection part and 2nd projection part which concern on this Embodiment 1 are examples, and are not restricted to the position and shape shown in the figure. For example, the first protrusion may be formed to protrude in an L shape at the lower end of the first surface, or the second protrusion may be formed in a U shape above the second surface. Furthermore, in the first embodiment, as shown in FIG. 11, the first protrusion is formed in a shape with a substantially U-shaped tip chamfered, but only the second protrusion or the first protrusion You may chamfer both protrusions of a 2nd protrusion part.

(Embodiment 2)
In the second embodiment, a case will be described in which the first surface 7a and the second surface 7b are provided with louver locking means other than the contact between the protrusions. The structural example of the lighting fixture 1 which concerns on this Embodiment 2 is the same as that of the lighting fixture 1 shown in FIG. 1 and FIG. 2 of Embodiment 1, and a lighting fixture 1 is the lighting fixture main body 2, It is composed of a louver 3 and a shaft member 4. Details will be described below.

  FIG. 13 shows a front view of the lighting apparatus according to Embodiment 2. FIG. FIG. 14 is a left side view of the lighting apparatus according to the second embodiment. The lighting fixture body 2 according to the second embodiment is the same as the first embodiment with respect to the first shaft holding portion 5a and the receiving portion 6a, but includes a fitting hole 9b instead of the first protrusion 8a. This is different from the first embodiment. The louver 3 is the same as the first embodiment with respect to the second shaft holding portion 5b and the hooking portion 6b, but the embodiment is provided with a convex portion 9a instead of the second protruding portion 8b. Different from 1.

  FIG. 15 is a cross-sectional view of the luminaire taken along line E-E ′ of FIG. 13. FIG. 16 shows an enlarged view of a portion T in FIG. FIG. 17 is a cross-sectional view of the luminaire cut along line F-F ′ in FIG. 14. About the louver 3 in these figures, only the louver frame 3a is drawn, and the louver piece 3b is omitted.

  The fitting hole 9b is a long hole in which a horizontal hole and an inclined hole are combined, and is formed near the hooking portion 6a of the two first surfaces 7a of the luminaire body 2. The convex portion 9a is a rectangular projection formed above the two second surfaces 7b of the louver 3 and near the hooking portion 6b. As shown in FIG. 16, the tip of the protrusion of the convex portion 9a is chamfered. In a state where the louver is hooked by the hooking portion 6a and the hooking portion 6b, as shown in FIGS. 15 to 17, the convex portion 9a protrudes from the hole in the horizontal portion of the fitting hole 9b.

  When the hook 6b is removed from the hook 6a and the louver 3 is horizontally moved and rotated, the louver 3 is locked during the rotation. When the louver 3 is moved / rotated, the convex portion 9 a of the louver 3 protrudes from the fitting hole 9 b of the lighting fixture body 2. That is, the convex portion 9a moves / rotates along the fitting hole 9b. FIG. 18 is a front view showing a state where the louver of the lighting fixture according to Embodiment 2 is locked. FIG. 19 shows a left side view of the state in which the louver is locked. FIG. 20 is a cross-sectional view of the luminaire cut along the line G-G ′ of FIG. 18. FIG. 21 shows an enlarged view of the U portion of FIG. FIG. 22 is a cross-sectional view of the lighting fixture taken along line H-H ′ in FIG. 19. Similarly, in these figures, only the louver frame 3a is drawn for the louver 3 in the figure, and the louver piece 3b is omitted.

  As shown in FIGS. 18 to 22, the convex portion 9 a of the louver 3 is in contact with the lower end of the fitting hole 9 b of the luminaire main body 2, so that the rotation of the louver 3 is stopped. This is also because the frictional force by the convex part 9a and the fitting hole 9b works. The position of the convex portion 9a and the size, position and inclination angle of the fitting hole 9b are designed in advance so that the louver 3 is locked at a predetermined position. When it is desired to completely rotate the louver 3, it can be easily unlocked by applying a force in the rotating direction. This is because the convex portion 9a is chamfered. The same applies to the case where the louver 3 is rotated from below to above to cover the opening of the luminaire body 2 again.

  Thus, according to the lighting fixture 1 of this Embodiment 2, it is possible to prevent the louver from dropping off from the lighting fixture main body. That is, the louver does not fall due to vibration or the like even when the hooking portion is not correctly hooked. In addition, the louver does not fall overhead due to carelessness when replacing the lamp. In addition, since the locking portion can be easily removed by applying a force in the rotation direction, a tool such as a screwdriver is not necessary when replacing the lamp.

  In the second embodiment, the fitting hole is a long hole in which a horizontal hole and an inclined hole are combined. However, the shape of the hole is not limited so long as the convex part can be fitted and moved and rotated. Good. The shape of the convex portion can also be changed according to the fitting hole. The size of the convex portion may be designed so as not to fall by its own weight in accordance with the size and weight of the louver. Moreover, the position of a convex part and a fitting hole can also be changed arbitrarily. In the second embodiment, it is necessary to make a fitting hole in the luminaire body 2 as shown in FIG. 18, but a cover may be formed around the hole in consideration of light distribution and aesthetics. . Or you may form the part of a fitting hole as a recessed part which a convex part can move and rotate.

(Embodiment 3)
In the third embodiment, a case will be described in which louver locking means is provided at a position other than the first surface 7a and the second surface 7b. The luminaire 1 according to the third embodiment is also composed of the luminaire body 2, the louver 3, and the shaft member 4. The structure of the shaft member 4 is the same as that of the first embodiment.

  FIG. 23 shows a front view of a lighting fixture according to Embodiment 3. FIG. FIG. 24 is a left side view of the lighting apparatus according to Embodiment 3. FIG. 25 is a cross-sectional view taken along line I-I ′ of FIG. FIG. 26 is a cross-sectional view taken along the line J-J ′ of FIG. About the louver 3 in these figures, only the louver frame 3a is drawn, and the louver piece 3b is omitted.

  As shown in FIGS. 23 to 26, the lighting fixture main body 2 according to Embodiment 3 is also formed with a first shaft holding portion 5a, a hooking portion 6a, and a first protrusion 8a. . The structure of the first shaft holding portion 5a is the same as that of the first embodiment. The hook 6a is a member having a hole through which the hook 6b can be inserted, and is movable in the Z direction shown in FIG. Two hooks 6 a are formed on the third surface 10 a of the luminaire body 2. Here, the 3rd surface 10a points out the surface facing the outer peripheral surface to which the louver 3 of the lighting fixture main body 2 inner surface rotates. The first protrusion 8a is a protrusion facing inward, and the tip is chamfered. The first protrusion 8a extends below the third surface 10a along the lower side with a length slightly shorter than the lower side.

  The louver 3 includes a louver frame 3a and a louver piece (not shown). In the third embodiment, the louver frame 3a is composed of three rectangular plates, and in a state of being hooked to the lighting fixture body 2, the hook portion side toward the opening of the lighting fixture body 2 has a bottom side. Has the shape of The louver frame 3a is formed with a second shaft holding portion 5b, a hooking portion 6b, and a second protruding portion 8b. Unlike the first embodiment, the shape of the second shaft holding portion 5b is a circular hole similar to the first shaft holding portion 5a through which the shaft portion 4a of the shaft member 4 can be inserted. The position is formed slightly closer to the lower part of the louver frame 3a than in the first embodiment.

  The hooking portion 6b has a shape that is partially protruded so as to be hooked to the hooking portion 6a, and is configured by, for example, a screw as shown in FIG. Two hooking portions 6b are formed on the fourth surface 10b of the louver frame 3a. Here, the 4th surface 10b points out the surface which makes the outer peripheral surface which the louver 3 rotates. The second protrusion 8b is a protrusion facing outward, and extends along the upper end of the fourth surface 10b with a length slightly shorter than the upper side.

  When the hook 6a is moved in the Z direction shown in FIG. 26 to remove the hook 6b and the louver 3 is rotated, the louver 3 is locked during the rotation. At this time, in the third embodiment, it is not necessary to move the louver in the horizontal direction. FIG. 27 shows a front view of a state where the louver of the lighting fixture according to Embodiment 3 is locked. FIG. 28 is a left side view of a state in which the louver of the lighting fixture according to Embodiment 3 is locked. FIG. 29 is a cross-sectional view taken along the line K-K ′ of FIG. 30 is a cross-sectional view taken along line L-L ′ of FIG. 28. Similarly, in these figures, only the louver frame 3a is drawn for the louver 3 in the figure, and the louver piece 3b is omitted.

  As shown in FIGS. 27 to 30, the second protrusion 8 b of the louver 3 is in contact with the first protrusion 8 a of the luminaire body 2, and the louver 3 has stopped rotating. . This is because, as shown in FIG. 30, the first protrusion 8 a and the second protrusion 8 b are in contact with each other at a position where the vertices of the two protrusions are slightly shifted and where the vertices overlap each other. Moreover, it is also because the frictional force by the 1st projection part 8a and the 2nd projection part 8b acts. In addition, it is necessary to design in advance the positions and the heights of the protrusions of the first protrusion 8a, the second protrusion 8b, and the hook 6b so that the first protrusion 8a and the hook 6b do not contact each other. .

  When it is desired to completely rotate the louver 3, it can be easily unlocked by applying a force in the rotating direction. This is because the first protrusion 8a is chamfered. The same applies to the case where the louver 3 is rotated from below to above to cover the opening of the luminaire body 2 again.

  Thus, according to the lighting fixture 1 of this Embodiment 3, the drop-off | omission of the louver from a lighting fixture main body can be prevented double. That is, the louver does not fall due to vibration or the like even when the hooking portion is not correctly hooked. In addition, the louver does not fall overhead due to carelessness when replacing the lamp. In addition, since the locking portion can be easily removed by applying a force in the rotation direction, a tool such as a screwdriver is not necessary when replacing the lamp.

  The positions and shapes of the first protrusions and the second protrusions according to the third embodiment are examples, and are not limited to the positions and shapes shown in the drawings. For example, the lengths of the first protrusion and the second protrusion may be shortened so as not to overlap with the hook portion. Further, for example, the first protrusion may be formed in an L shape projecting from the lower end of the first surface, or the second protrusion may be formed in a U shape above the second surface. Good. Further, in the third embodiment, the tip of the first protrusion is formed in a chamfered shape, but only the second protrusion or both the protrusions of the first protrusion and the second protrusion are chamfered. May be applied.

  In the third embodiment, the second shaft holding portion is not formed as a long hole and the lighting apparatus in which the louver does not slide has been described. However, the lighting in which the louver slides as in the first or second embodiment. It is good also as an instrument. In this case, for example, it is designed so that the tip of the hooking portion contacts the first protrusion on the third surface during rotation. Furthermore, even if the lighting apparatus body is not provided with the first protrusion, the second protrusion is provided only on the louver, and the second protrusion is designed to come into contact with the third surface when the louver is rotated. It can also be stopped.

  In the drawings of the present embodiment, the height of the louver is drawn thick for convenience of explanation, but it may be formed thin in order to widen the lamp installation space of the luminaire body. Moreover, although the louver frame demonstrated the example comprised from the rectangular board of 2 or 3 sheets, you may use the enclosure shape comprised from 4 boards.

  The shaft member described in the present embodiment and the drawings is an example, and any member may be used as long as it is a shaft that can hold the louver rotatably with respect to the lighting fixture. In addition, as for the shaft holding portion, it is only necessary that the lighting fixture main body and the louver be processed so that the louver can be held and rotated. For example, the long hole such as the second shaft holding portion shown in the first and second embodiments does not need to be formed in the louver, and may be formed in the luminaire body. Further, the long hole may be formed in an L shape or a U shape so that the louver can easily rotate.

  In addition, the shape and position of the hook portion and the hook portion shown in the drawing are merely examples, and any shape and position that can be hooked to each other may be used. For example, as for the position, the hooking portion and the hooking portion may be formed on either the luminaire main body or the louver, and may be formed on a surface orthogonal to the rotation axis of each louver. In addition, regarding the shape, the first and second embodiments have described the example in which the hooking portion has a shape like an L-shaped hook, but a structure in which the tip projects into a U-shape may be used. Furthermore, the number of hooks and hooks can be changed as appropriate. For example, in the case of the louver frame as in the third embodiment, a hooking portion and a hooking portion may be provided at the center of another place.

  In addition, in the figure, for the sake of explanation, the hooking portion and the shaft member are drawn so as to protrude from the luminaire main body. However, a cover may be formed around the periphery to improve the appearance. Alternatively, the luminaire main body may have a two-layer structure, and the holes for the hooking portion and the shaft holding portion may be formed only in the inner one layer.

  Although the embodiments of the invention have been described, the present invention is not limited to the above-described embodiments, and various embodiments are possible within the scope of the present invention.

  Other suitable modifications of the present invention include the following configurations.

  In the lighting fixture according to the first aspect of the present invention, preferably, the locking means includes a first surface orthogonal to a rotation axis of the louver on the inner surface of the lighting fixture main body, and the louver on the outer surface of the louver. It is provided in the 2nd surface orthogonal to a rotating shaft.

  More preferably, the locking means engages the louver by contacting a first protrusion provided on the inner surface of the luminaire main body with a second protrusion provided on the outer surface of the louver. It is characterized by stopping.

Preferably, the first protrusion is provided along a lower side at a lower portion of the first surface of the lighting fixture body,
The second protrusion is provided on an upper portion of the second surface of the louver along an upper side.

  Preferably, the first protrusion is a substantially U-shaped protrusion having a height of approximately 1 mm, and the second protrusion is a substantially L-shaped protrusion having a height of approximately 1 mm. It is characterized by being provided in a state where the apexes are shifted and overlapped when locked.

  Furthermore, it is preferable that a chamfer is applied to an end of one of the first protrusion and the second protrusion.

  Preferably, the luminaire main body includes the hook portion, and the louver includes the hook portion.

DESCRIPTION OF SYMBOLS 1 Lighting fixture 2 Lighting fixture main body 3 Louver 3a Louver frame 3b Louver piece 4 Shaft member 4a Shaft part 4b Knob part 5a 1st axis | shaft holding part 5b 2nd axis | shaft holding part 6a Hatching part 6b Hooking part 7a 1st surface 7b 2nd surface 8a 1st projection part 8b 2nd projection part 9a convex part 9b fitting hole 10a 3rd surface 10b 4th surface

Claims (8)

A luminaire main body having an opening, a louver attached to the opening, a shaft member that rotatably supports the louver with respect to the luminaire main body, a shaft holding portion that holds the shaft member, and the louver A hook for hooking the lighting fixture body, and a hook receiving portion for hooking the hook.
The shaft member and the shaft holding portion support the louver so as to be rotatable with respect to the luminaire main body in a state where the hook portion is removed from the hook portion.
The luminaire main body and the louver are provided with locking means for locking the rotation of the louver between an outer surface of the louver rotating and an inner surface of the luminaire main body.   The locking means is provided on a first surface orthogonal to the rotation axis of the louver on the inner surface of the luminaire main body and a second surface orthogonal to the rotation axis of the louver on the outer surface of the louver. The lighting fixture according to claim 1.   The locking means locks the louver by contacting a first protrusion provided on the inner surface of the luminaire body and a second protrusion provided on the outer surface of the louver. The lighting fixture according to claim 1 or 2, characterized in that The first protrusion is provided along a lower side at a lower portion of the first surface of the lighting fixture body,
The lighting apparatus according to claim 3, wherein the second protrusion is provided on an upper portion of the second surface of the louver along an upper side.   The first protrusion is a substantially U-shaped protrusion having a height of approximately 1 mm, and the second protrusion is a substantially L-shaped protrusion having a height of approximately 1 mm. The lighting fixture according to claim 3 or 4, wherein the lighting fixture is provided in a state of being overlapped and overlapping when being locked.   The lighting fixture according to any one of claims 3 to 5, wherein a chamfer is applied to an end of one of the first protrusion and the second protrusion.   The lighting fixture according to any one of claims 1 to 6, wherein the lighting fixture body includes the hook portion, and the louver includes the hook portion. Attached to the luminaire body with an opening,
By the hook part that can be hooked to the hook part and the hook part, it is hooked to the lighting fixture body,
With the hook part removed from the hook part, the shaft member and the shaft holding part that holds the shaft member are supported rotatably with respect to the lighting fixture body.
A member for a lighting fixture, comprising a locking means for locking the rotation of the member for a lighting fixture on an outer surface of the member for a lighting fixture.

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