JP4284156B2 - lighting equipment - Google Patents

Description

  The present invention relates to a lighting fixture with a louver or the like.

  A first conventional example is shown in FIG. Reference numeral 100 is a ceiling, 101 is a total bar, 102 is an instrument body, 103 is a lamp socket, and 104 is a louver. In the first conventional example, the louver needs to be removed when replacing the lamp.

  A second conventional example is shown in FIG. Portions common to FIG. 12 are denoted by the same reference numerals. This enables lamp replacement without removing the louver 104 (Patent Document 1).

A third conventional example is shown in FIG. Portions common to FIG. 12 are denoted by the same reference numerals. The lamp can be replaced without removing the louver 104 by rotating the louver 104 (Patent Document 2).
JP 56-50003 A Japanese Utility Model Publication No. 55-44521

  The first conventional example has a drawback in that workability is poor because the louver 104 needs to be removed and replaced when replacing the lamp as described above. In addition, the reflection of the louver 104 is reflected on the reflection plate portion of the total bar 101, and the aesthetic appearance is not good. Furthermore, since the illumination line is fixed, the irradiation direction cannot be changed, and the illuminance cannot be changed. Further, if the louver 104 is provided over the entire width of the instrument, the efficiency of the instrument is deteriorated.

  In the second and third conventional examples, the lamp can be replaced without removing the louver. However, the irradiation direction cannot be changed.

  Accordingly, an object of the present invention is to provide a luminaire that can change the irradiation direction of a light distribution control member including a louver and can replace a lamp without removing the light distribution control member.

Luminaire of the present invention includes an instrument body having a lamp socket and fixture, the lamp the fixture is disposed in front of the lamp to be mounted on the socket and a light distribution control member having an abutting contact surface ,
A shaft provided on one of the light distribution control member and the fixture and rotatably supporting the light distribution control member on an axis of the lamp of the instrument body;
A base end is attached to the other of the light distribution control member and the fixture, and has a bent portion for bearing the shaft in the middle, and a distal end is a free end that can be detached from the shaft, and the light distribution control member is A mounting spring that pulls toward the instrument body and causes the abutment surface to abut against the fixture;
The fixture has a contact surface so that the light distribution control member can be positioned at any one of a plurality of predetermined rotation angles about the axis to set the direction of light emitted from the lamp. A plurality of contact portions that are in contact with each other are formed continuously in a rotation direction of the light distribution control member, and the plurality of light distribution control members when the contact surface is locked to one of the lock portions. At least one of the predetermined rotation angles is characterized in that the lamp is exposed to the front to the extent that the lamp can be replaced .

  According to the lighting apparatus of the present invention, it is possible to replace the lamp without removing the light distribution control member including the louver when replacing the lamp, and it is possible to change the direction of the irradiation light by moving the light distribution control member. it can. Furthermore, if the function that allows lamp replacement without separating the light distribution control member from the fixture body can be used to change the direction of light emitted from the lamp by moving the louver, lamp replacement and louver It is possible to change the direction of the light emitted from the lamp by moving the same by the same operation of one member, so that the operability can be improved.

  When the light distribution control member is rotated by a predetermined angle around the axis of the lamp, the distance between the louver and the lamp can be made substantially constant even if the louver is moved. can do.

  Further, by using the mounting spring, the rotation angle of the louver can be fixed and the louver can be held at the same time, and further exchange is possible.

  An embodiment of the present invention will be described with reference to FIGS. The lighting fixture includes a lamp 1, a light distribution control member 2, and a fixture body 3.

  The lamp 1 is a straight fluorescent lamp.

The light distribution control member 2 uses a louver and is disposed in front of the lamp 1. In the embodiment, as shown in FIG. 5, for example, a metal louver frame 4, for example, a metal louver member 5 attached to the inside of the louver frame 4 with screws 6, and screws 7 on the inside of both ends of the louver frame 4. A louver frame mounting spring 8 is mounted. A fall prevention string may be added. The louver frame 4 has a rectangular shape large enough to enclose the lamp 1 and a lamp socket described later. For example, the louver member 5 hangs in a single body by cutting and raising a large number of louver pieces 10 on a flat plate. On both sides of the louver member 5, the rising pieces 11 are bent and attached to the louver frame 4 with fitting screws 6. The louver frame mounting spring 8 is formed, for example, by bending a leaf spring into a substantially U-shape, further forming a U-shaped bent portion 12 for bearing on the upper piece, and bending the tip 13 in the opposite direction. As shown in FIG. 6, contact surfaces 42 are provided inside both ends of the louver frame 4.

  The instrument body 3 supports the lamp 1 and the light distribution control member 2. In the embodiment, it is formed by a long member having an inverted U-shaped cross section, and a ballast 14, a terminal block 15, and an electronic starter 16 are attached to the inside thereof by screws 17-19. For example, metal mounting legs 20 are attached to the lower surface sides of both ends of the instrument body 3, and for example, a metal lifting prevention tool 21 with return claws 21 a is attached to both ends of each mounting leg 20. A socket base 30 is attached to both ends of the instrument body 3 with screws 32, and a lamp socket 23 is attached to each socket base 30. The lamp 1 is mounted in the lamp socket 23. A reflector 24 is disposed between the lamp sockets 23 and is attached to the instrument main body 3 by a screw such as a decorative thumbscrew 25, for example. End plates 27 provided with holes 26 penetrating the lamp socket 23 are attached to both ends of the instrument body 3 by screws 28. Further, the upper end of, for example, a metal fixture 33 for attaching the louver frame 4 to the socket base 30 is attached by screws 34 through the end plate 27. The fixture 33 is coaxial with the lamp shaft, has a shaft 35 projecting outward just on the back side of the lamp socket 23, and has a horizontal locking portion 36 at the lower end edge and inclined locking portions 37 and 38 on both sides thereof. And formed. The inclination angle of the inclined locking portions 37 and 38 is set to 25 degrees with respect to the horizontal locking portion 36, for example. Reference numeral 50 denotes a power supply bushing provided in the through hole 51 through which the power supply line of the instrument body 3 passes.

  The instrument body 3 is supported by a total bar 40 on the system ceiling. A pair of parallel total bars 40 are suspended from a ceiling housing (not shown), and the instrument main body 3, the reflector 24, the lamp 1, the light distribution control member 2, and the like are accommodated between the total bars 40. Both ends are locked to the upper surface of the total bar 40, and the anti-lifting tool 21 with the return claw 21a is engaged with the inner piece of the total bar 40. The ceiling board 55 is mounted outside the total bar 40.

  Thus, in the system ceiling fixture composed of the total bar 40 of the system ceiling and the lighting fixture, for example, the shape of the louver (2) is set to about 1/3 of the fixture width of about 190 mm, about 60 mm, The dimensions are set so that the space 56 between the total bar 40 and the louver (2) can be reached. An arrow 57 is a ventilation path by convection heat. In this case, the louver is fixed by using an attachment spring 8 as follows, and is constituted by an irradiation direction setting means provided with a rotation function.

  That is, the irradiation direction setting means comprises a fixture 33 having a shaft 35 and an attachment spring 8 as will be described later, and functions to attach the light distribution control member 2 to the lamp 1 so as to be movable. At the same time, the light distribution control member 2 is positioned at a predetermined irradiation position of the lamp 1 to set the direction of light emitted from the lamp 1. In this case, at least one position of the light distribution control member 2 positioned by the irradiation direction setting means exposes the lamp 1 to the extent that the lamp 1 can be replaced. In the embodiment, the light distribution control member 2 is rotatably supported by a shaft 35 disposed on the axis of the lamp 1, and the irradiation direction setting means positions the light distribution control member 2 at a predetermined rotation angle. That is, the irradiation direction setting means is provided on the mounting spring 8 that has the bent portion 12 that supports the shaft 35 and draws the light distribution control member 2 toward the instrument main body, and the louver frame 4 of the light distribution control member 2, for example. The formed contact surface 42 and a fixture 33 provided on the instrument main body 3 are provided. The fixture 33 attracts the light distribution control member 2 by the contact surface 42 being drawn by the attachment spring 8 and contacting. A plurality of locking portions 36 to 38 that are positioned at a predetermined rotation angle are formed continuously in the rotation direction of the light distribution control member 2.

  The light distribution control member 2 is attached by inserting the louver frame fixture 33 into the end of the louver frame 4 as shown by the arrows in FIGS. It fits so that it may be caught in the bending part 12. FIG. At this time, due to the action of the spring 8 elastically engaging the shaft 35 and pulling the louver frame 4, the contact surface 42 of the louver frame 4 is locked to one of the locking portions 36 to 38, and the horizontal position and two types of The louver frame 4 is positioned at one of the inclined positions. In the inclined locking portions 37 and 38, the lamp 1 can be attached and detached from the side where the louver (2) is opened by the inclination. Further, by rotating the louver frame 4, the contact surface 42 can be slid along the locking portions 36 to 38 and moved to any of the locking portions 36 to 38. On the other hand, the louver (2) is removed by raising the tip of the mounting spring 8 with a jig such as a screwdriver and sliding the louver frame 4.

  FIG. 10 is a light distribution curve in a posture in which the louver (2) is locked to the horizontal locking portion 36, and it can be seen that the illuminance on the floor surface or the desk surface directly under each lighting fixture is high. FIG. 11A shows an example of a specific light distribution curve when the lamp luminous flux is 1000 lm.

  FIG. 9 is a light distribution curve when the louver (2) is inclined by 25 degrees, and it can be seen that the illuminance of the floor surface or the desk surface at a position between the two lighting fixtures is high. FIG. 11B is a specific light distribution curve when the lamp luminous flux is 1000 lm.

  According to this embodiment, the lamp can be replaced without removing the louver when the lamp is replaced. In addition, the reflection of the louver on the reflecting surface of the total bar (reflecting plate) is eliminated, and the device has a design that does not impair the beauty. Further, for example, as shown in FIG. 9, it is possible to increase the illuminance by concentrating light from the two illumination lines in a central portion where there is no illumination line. In addition, the louver portion can be narrowed while maintaining the light shielding angle, and the efficiency of the appliance can be increased. The louver can be attached with the spring 8 with one touch, and the louver can emit light in a predetermined angle direction with one touch.

  In the present invention, the light distribution control member 2 is not limited to a louver but may be a panel or the like. Further, the light distribution control member may be moved horizontally as well as rotated. Further, the shaft 35 may be provided on the louver side, and the spring 8 may be provided on the fixture side.

It is sectional drawing of one embodiment of this invention. It is sectional drawing along the longitudinal direction. It is a side view. It is a bottom view. It is a whole exploded perspective view. It is a perspective view of the process of attaching a louver frame to a fixture. It is explanatory drawing seen from the side surface of the attachment state. It is sectional drawing of an attachment state. It is a light distribution curve figure of a louver rotation state. It is a light distribution curve figure of the state of the horizontal posture of a louver. (A) is the light distribution curve figure of the horizontal state of a louver, (b) is the light distribution curve figure of an inclination state. It is a schematic sectional drawing of the 1st prior art example. It is a schematic sectional drawing of the 2nd prior art example. It is a bottom view of the third conventional example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lamp 2 Light distribution control member 3 Apparatus main body 8 Mounting spring 12 Bending part 23 Lamp socket 33 Fixing tool 35 Shafts 36-38 Locking part 42 Contact surface

Claims (1)

A fixture main body having a lamp socket and a fixture, and a light distribution control member having a contact surface disposed on the front surface of the lamp mounted on the lamp socket and contacting the fixture ,
A shaft provided on one of the light distribution control member and the fixture and rotatably supporting the light distribution control member on an axis of the lamp of the instrument body;
A base end is attached to the other of the light distribution control member and the fixture, and has a bent portion for bearing the shaft in the middle, and a distal end is a free end that can be detached from the shaft, and the light distribution control member is A mounting spring that pulls toward the instrument body and causes the abutment surface to abut against the fixture;
The fixture has a contact surface so that the light distribution control member can be positioned at any one of a plurality of predetermined rotation angles about the axis to set the direction of light emitted from the lamp. A plurality of contact portions that are in contact with each other are formed continuously in a rotation direction of the light distribution control member, and the plurality of light distribution control members when the contact surface is locked to one of the lock portions. At least one of the predetermined rotation angles exposes the lamp to the front surface to the extent that the lamp can be replaced .

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