JP2004134126A - Lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting fixture with which a detachment and attachment work of a lamp is easy and rocking of the lamp due to vibration or the like of a fixture main body is negligible. <P>SOLUTION: Two lamp-supporting springs 7 are arranged in a periphery direction of the fixture main body 1 in an equal interval from a lamp socket 3. Further, each lamp-supporting spring 7 is so arranged as to be in an equal interval from the lamp socket 3 in a periphery direction of a fluorescent lamp La, and to set an angle θ2 made by virtual lines M21, M22 connecting a center O2 of a virtual circle formed by a center line along a peripheral direction of the fluorescent lamp La and each lamp-supporting spring 7 to 30° to 90°. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a lighting fixture.
[0002]
[Prior art]
Conventionally, an appliance body attached to a construction surface such as a ceiling, an annular lamp arranged on the lower surface side of the appliance body, and a lamp arranged and held on the lower surface side of the appliance body for connection and holding 2. Description of the Related Art There is known a lighting fixture provided with a lamp socket which is provided on a lower surface side of a fixture body and a lamp supporting spring which holds a lamp together with the lamp socket.
[0003]
As this type of lighting fixture, a lamp is held by one lamp socket and one lamp supporting spring (for example, Patent Document 1), or a lamp is held by one lamp socket and two lamp supporting springs. (For example, Patent Document 2).
[0004]
[Patent Document 1]
JP 2001-76531 A (Pages 3-4, FIGS. 3 and 4)
[Patent Document 2]
U.S. Pat. No. 2,737,635 (FIG. 1 and FIG. 2)
[0005]
[Problems to be solved by the invention]
By the way, in a lighting fixture configured to hold a lamp with two holders, one lamp socket and one lamp support spring, the lamp is largely shaken when the fixture main body is vibrated, and the stability of the lamp is poor.
[0006]
In a lighting fixture configured to hold a lamp with three holders, one lamp socket and two lamp support springs, the holders are arranged at equal intervals in the circumferential direction of the lamp (that is, the circumference of the lamp). (The central angles of the three sectors divided by three virtual straight lines connecting the center of the virtual circle formed by the center lines along the directions and the holders are all 120 °.) Although there is an advantage that the swing of the lamp when vibrated can be reduced, there is a problem that the attaching and detaching work of the lamp is difficult.
[0007]
The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a lighting fixture that allows easy attachment and detachment of the lamp and has less fluctuation of the lamp due to vibration of the fixture body.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 has an appliance body attached to a construction surface such as a ceiling and an annular body arranged on a side opposite to the construction surface in the appliance body. A lamp, a lamp socket arranged on the side opposite to the construction surface of the fixture body for detachably connecting and holding the lamp, and a lamp socket arranged on the opposite side of the construction surface of the fixture body to detachably hold the lamp together with the lamp socket The lamp support springs are arranged at equal intervals from the lamp socket in the circumferential direction of the lamp, and the center of an imaginary circle formed by a center line along the circumferential direction of the lamp and each lamp support spring. The arrangement is such that the angle formed by the two virtual straight lines connecting the support spring is 30 ° to 90 °, so that the lamp can be easily attached and detached, and In addition, the lamp can be stably mounted, and the shaking of the lamp due to the vibration of the instrument body can be reduced.
[0009]
According to a second aspect of the present invention, in the first aspect of the present invention, the lamp socket has a cutout portion through which an electrode pin is inserted when the lamp is attached or detached, at a leading edge of a socket portion into which a lamp base is fitted. The flexure of the lamp support spring can be reduced when attaching and detaching, and the attaching and detaching operation of the lamp is further facilitated.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the lighting fixture of the present embodiment will be described with reference to FIGS.
[0011]
The lighting fixture of the present embodiment is attached to a wiring fixture 90 (see FIGS. 5 and 7) such as a hanging ceiling fixed to a ceiling as a construction surface, and as shown in FIG. The mounting adapter 10 is connected to the main body 90, the metal main body 1 is formed in a disk shape and is arranged to face the lower surface of the ceiling, and a plurality of fixing screws 45 are provided on the lower surface side of the main body 1. The reflecting plate 4 to be coupled, two annular fluorescent lamps La as lamps disposed below the reflecting plate 4, and the fluorescent lamp La disposed between the appliance body 1 and the reflecting plate 4 to light up. The lighting device 2 includes a lighting device 2 for supplying power, and a dome-shaped globe 5 (see FIG. 3) attached to the instrument body 1 so as to cover the fluorescent lamp La and the reflecting plate 4. The reflecting plate 4 is formed by a sheet metal into a bowl shape whose central portion is located below the peripheral portion. The above-described wiring device 90 is not limited to the hooking ceiling, but may be a so-called hooking embedded rosette.
[0012]
The lighting device 2 is an electronic ballast including an inverter circuit and the like, and is configured by mounting circuit components on a circuit board 21 formed of a printed board. That is, the fluorescent lamp La is turned on at a high frequency by converting a low frequency commercial power supply into a high frequency power. This type of electronic ballast is easier to reduce in weight than a lighting device using a copper-iron type ballast such as a choke coil. In addition, a lamp socket (hereinafter, referred to as a first lamp socket) 3 for connecting and holding two fluorescent lamps La is connected to the circuit board 21 via a lamp wire (not shown). The first lamp socket 3 will be described later.
[0013]
A lamp socket (hereinafter, referred to as a second lamp socket) 23 for connecting and holding a bead ball (not shown) and a switch 24 for switching a lighting state are also mounted on the lower surface of the circuit board 21. The switch 24 is a pull switch, and is provided with a drawstring 24a as an operation unit as shown in FIG. Note that the drawstring 24a is passed through the tip of a V-shaped guide 25 attached to the upper surface side of the apparatus main body 1, and each time the drawstring 24a is pulled, the fluorescent lamp La is turned on at high output, The state in which the lamp La is turned on at a low output, the state in which the bean balls are turned on, and the state in which the lamp La is turned off can be cyclically switched.
[0014]
In addition, the circuit board 21 is also connected to a power supply line 9 having a connector (hereinafter, referred to as a first connector) 9 a at an end thereof for electrically connecting to the mounting adapter 10. The power supply line 9 is provided for supplying electric power to the lighting device 2 from a commercial power supply via the wiring device 90 and the mounting adapter 10.
[0015]
The mounting adapter 10 is formed by projecting a pair of hooking blades (not shown) on the upper surface of a cylindrical adapter main body 10a. The adapter main body 10a is a synthetic resin disposed on the lower surface side of the appliance main body 1. It is inserted into a cylindrical portion 81 protruding to the lower surface side at the center of the insulating plate 8 made of aluminum and a cylindrical cylindrical member 6 arranged on the lower surface side of the insulating plate 8. The tubular member 6 is made of a synthetic resin, and is connected to the insulating plate 8 using a plurality of connecting screws 65. Here, an outer flange 6a protrudes from the upper end of the cylindrical member 6, and an insertion hole 6b through which the coupling screw 65 is inserted is formed in the outer flange 6a. As is well known, the hook blade is a blade whose end is bent in an L-shape, and the adapter body 10a is rotated after the hook blade of the mounting adapter 10 is inserted into the blade insertion slot of the wiring device 90. Then, the wiring device 90 is mechanically coupled and electrically connected to the wiring device 90. On the outer peripheral surface of the adapter main body 10a, engaging pieces 10b protruding movably are provided side by side in the diametric direction and the vertical direction of the adapter main body 10a, and the lower engaging piece 10b is provided on the tubular member 6. A receiving portion 61 (see FIG. 7 (a)) is formed so as to be freely engaged and disengaged. The tool main body 1 is connected to the mounting adapter 10 by engaging the engaging piece 10b with the receiving portion 61. .
[0016]
The engagement piece 10b is spring-biased in the projecting direction, and when the pair of operation knobs 10c projecting from the lower surface of the adapter body 10a are operated against the spring force, the engagement piece 10b is disengaged from the receiving portion 61 and attached. The device main body 1 can be removed from the adapter 10. Further, a connector (hereinafter, referred to as a second connector) 10d to which a first connector 9a provided at one end of the power supply line 9 is detachably connected is provided at the center of the lower surface of the adapter body 10a. The second connector 10d is electrically connected to the hooking blade. When the first connector 9a is connected to the second connector 10d in a state where the mounting adapter 10 is connected to the wiring device 90, the second connector 10d is turned on from the commercial power supply. Power is supplied to the device 2.
[0017]
By the way, an outer flange 4a is protruded from a peripheral portion of the reflection plate 4, and an insertion hole 41 through which the fixing screw 45 is inserted is formed in the outer flange 4a. The central portion of the reflection plate 4 is flat and has a circular exposure hole 4b for exposing the lower surface of the mounting adapter 10 located in the cylindrical member 6. Two exposed holes 4d for exposing each of two lamp supporting springs 7 for supporting two fluorescent lamps La are provided on the inclined portion between the central portion formed in a plate shape and the outer flange 4a in the reflecting plate 4, An exposure hole 4c for exposing a part of the first lamp socket 3 is provided. The reflection plate 4 is also provided with an exposure hole 4e facing the second lamp socket 23 and a cutout 4f for passing the power supply line 9. The lamp supporting spring 7 is coupled to the insulating plate 8 by using a mounting screw 77. An insulating wall 82 into which the lamp supporting spring 7 is inserted is formed on the lower surface side of the insulating plate 8. Here, the lamp support spring 7 is arranged in the circumferential direction of the appliance main body 1 at the other end in the diametrical direction of the appliance main body 1 having the first lamp socket 3 as one end side. Further, a central portion of the reflecting plate 4 receives a remote control signal (a wireless signal using infrared rays as a transmission medium) transmitted from a remote control transmitter (not shown) and controls the lighting device 2. There is also provided an exposure hole (not shown) through which a remote control receiver (not shown) for switching the lighting state of the fluorescent lamp La and the bean ball is inserted.
[0018]
The above-mentioned reflecting plate 4 is arranged so as to cover the circuit board 21 of the lighting device 2, and the circuit board 21 is held on the insulating plate 8 by locking claws (not shown) protruding from the lower surface of the insulating plate 8. The insulating plate 8 is spaced apart from the insulating plate 8 by a protrusion (not shown) projecting from the lower surface of the insulating plate 8. Here, when the reflector 4 is coupled to the fixture body 1, a part of the first lamp socket 3 projects to the lower surface side of the reflector 4 through the exposure hole 4c, and is connected and held by the first lamp socket 3. The reflection plate 4 is disposed between the fluorescent lamp La and the device main body 1. A bead ball is inserted into the second lamp socket 23 facing the exposure hole 4e from the lower surface side of the reflection plate 4.
[0019]
As shown in FIG. 3, the globe 5 is formed in a dome shape having a circular opening on the upper surface by a light-transmitting synthetic resin such as an acrylic resin. A tube 5a is provided upright. A plurality of (six in this embodiment) locking claws 5b having a smaller height than the height of the mouthpiece 5a are protruded from the inner peripheral surface of the mouthpiece 5a at predetermined intervals. A receiving member 12 to which the locking claw 5b of the glove 5 can be fitted is attached to a peripheral portion of the lower surface of the instrument body 1. The receiving members 12 are arranged at substantially equal intervals along the circumferential direction of the instrument body 1. Here, the receiving member 12 is connected to the instrument body 1 by a fixing screw 14. The receiving member 12 holds the locking claw 5b of the glove 5 between the lower surface of the device main body 1 and the upper edge of the mouthpiece 5a of the glove 5 against the lower surface side peripheral portion of the device main body 1. When the glove 5 is rotated with respect to the appliance main body 1 in the state in which the glove 5 is held, the locking claw 5b is inserted between the receiving member 12 and the lower surface of the appliance main body 1 so that the glove 5 is formed into a shape for holding the glove 5. I have. Therefore, when the glove 5 is rotated in the opposite direction, the locking claw 5b comes off from the receiving member 12, and the glove 5 can be removed from the instrument body 1. In addition, since the peripheral wall 15 which protrudes downward over the entire periphery of the outer peripheral edge of the disk-shaped appliance body 1 is integrally formed, the rigidity can be increased by providing the peripheral wall 15.
[0020]
By the way, in the first lamp socket 3, a synthetic resin socket main body 31 provided with two socket portions 32 into which the base of the fluorescent lamp La is fitted and which connects and holds the fluorescent lamp La passes through the center of the fixture main body 1. The extension direction of one virtual straight line (that is, the diametric direction of the instrument body 1) is set as the longitudinal direction. Here, the first lamp socket 3 has a hooking claw 36 that is hooked and locked on the periphery of the hooking hole 16 formed on the virtual straight line, and protrudes from the upper surface of the intermediate portion of the socket body 31 in the longitudinal direction. I have. Further, the first lamp socket 3 is provided at a tip end of a holding projection 83 which projects laterally along the virtual straight line from the outer peripheral edge of the insulating plate 8 via a step 84 (see FIG. 6). A lock portion 39 (see FIG. 6) with which the hook 83a is engaged is provided at an end (right end in FIG. 6) of the socket body 31 on the insulating plate 8 side. Here, the hooking claw 36 has a portion protruding upward from the upper surface of the socket body 31 and a direction approaching the center of the appliance body 1 from the tip of the portion (that is, in the juxtaposition direction of the hooking claw 36 and the lock portion 39). It is formed in an inverted L-shape having a portion protruding in a direction approaching the lock portion 39). Further, the holding projection 83 is provided with a holding hook 83a that protrudes in a direction approaching the hook hole 16 and protrudes downward at a distal end portion. Further, the lock portion 39 is constituted by a side wall on the insulating plate 8 side of the fixing concave portion 37 formed at the end of the socket body 31 on the insulating plate 8 side. In order to guide the holding hooks 83a into the fixing recesses 37 when the holding hooks 83a are introduced into the fixing recesses 37, the lower surface of the appliance body 1 becomes closer to the insulating plate 8 at the upper end of the lock portion 39. A guide surface 39a (see FIG. 6) that is inclined so as to increase the distance from the guide surface is formed.
[0021]
Although the insulating plate 8 is connected to the instrument body 1 using a connecting screw (not shown), instead of using the connecting screw, an engaging hole is provided in the instrument body 1 and the insulating plate 8 is engaged. An engagement protrusion that engages with the hole may be provided so as to be coupled to the instrument body 1.
[0022]
Therefore, when attaching the first lamp socket 3 to the appliance main body 1 to which the insulating plate 8 is coupled, the first lamp socket 3 approaches the center of the appliance main body 1 after the hook 36 is inserted into the hook hole 16. When it is slid in the direction (the direction of the arrow B in FIG. 5), the hooks 36 are hooked and locked on the peripheral edge of the hook holes 16, and the holding hooks 83 a are bent while the holding projections 83 are bent. As a result, the holding hook 83a can be easily engaged with the lock portion 39. As a result, the first lamp socket 3 is held by the fixture body 1 and the insulating plate 8.
[0023]
The first lamp socket 3 has a flange portion 38 (see FIGS. 5 and 6) that abuts on the peripheral portion of the exposure hole 4 c on the fixture body 1 side of the reflecting plate 4 from both sides in the width direction of the socket body 31. The first lamp socket 3 is protruded, and the downward movement of the first lamp socket 3 is prohibited by connecting the reflection plate 4 to the appliance main body 1.
[0024]
Each of the socket portions 32 of the first lamp socket 3 is opened obliquely downward, and a notch portion 32b through which an electrode pin (not shown) is inserted at the tip end of the socket portion 32 when the fluorescent lamp La is attached or detached. Is formed. On the other hand, in the lamp supporting spring 7, one ends of C-shaped holding pieces 72, 72 (see FIG. 4) for holding the fluorescent lamps La are connected by spring pieces 71 (see FIG. 4). When replacing the fluorescent lamp La, when removing the fluorescent lamp La, as shown by an arrow C in FIG. When the fluorescent lamp La is removed and the fluorescent lamp La is mounted, the fluorescent lamp La is first fitted into the holding piece 72 of the lamp support spring 7.
[0025]
By the way, the above-mentioned two lamp supporting springs 7 are arranged at equal intervals from the first lamp socket 3 in the circumferential direction of the appliance body 1. The distance between the two lamp support springs 7 in the circumferential direction of the appliance body 1 is set smaller than the distance between the lamp support spring 7 and the first lamp socket 3. More specifically, as shown in FIG. 2, a straight line M1 connecting the center O1 of the appliance body 1 to one of the lamp support springs 7, and a straight line M2 connecting the center O1 of the appliance body 1 to the other lamp support spring 7 As shown in FIG. 10, as the angle θ1 increases, the swing “b” due to vibration of the instrument body 1 decreases and the detachability “a” of the fluorescent lamp La deteriorates, as shown in FIG. By setting the angle [theta] 1 in the range of 30 [deg.] To 90 [deg.], The attaching / detaching operation of the fluorescent lamp La can be relatively easily performed, and the fluctuation of the fluorescent lamp La due to the vibration of the instrument body 1 can be relatively reduced. Therefore, in the lighting fixture of the present embodiment, as shown in FIG. 1, each lamp support spring 7 is equidistant from the first lamp socket 3 in the circumferential direction of the fluorescent lamp La and along the circumferential direction of the fluorescent lamp La. Are arranged such that the angle θ2 between two virtual straight lines M21 and M22 connecting the center O2 of the virtual circle formed by the center lines formed and the respective lamp support springs 7 is 30 ° to 90 ° (that is, the center). The lamp support springs 7 are arranged at positions corresponding to both ends of a virtual sector-shaped arc having an angle of 30 ° to 90 °).
[0026]
Thus, in the lighting fixture of the present embodiment, each lamp support spring 7 is formed by a center line which is equidistant from the first lamp socket 3 in the circumferential direction of the fluorescent lamp La and extends along the circumferential direction of the fluorescent lamp La. Are arranged so that the angle θ2 (= θ1) formed by two virtual straight lines M21 and M22 connecting the center O2 of the virtual circle and the lamp supporting springs 7 is 30 ° to 90 °. The attachment / detachment work can be easily performed, and the fluorescent lamp La can be attached stably (the fluorescent lamp La can be attached with less rattling and inclination and with good balance). Of the fluorescent lamp La can be reduced. Here, the angle θ2 formed by the virtual straight lines M21 and M22 may be set within a range of 30 ° to 90 °, and is preferably set near 45 °.
[0027]
When the angle θ2 is set to a relatively small value such as 30 ° to 45 °, the operating force for attaching and detaching the fluorescent lamp La increases. Since the notch 32b (see FIG. 8) through which the electrode pin passes when the fluorescent lamp La is attached / detached is formed, the bending of the lamp support spring 7 can be reduced when the fluorescent lamp La is attached / detached, and the fluorescent lamp La can be attached / detached. Work becomes easier.
[0028]
【The invention's effect】
The invention according to claim 1 is an apparatus main body attached to a construction surface such as a ceiling, an annular lamp arranged on a side opposite to the construction surface of the appliance body, and a construction surface of the appliance body. A lamp socket, which is disposed on the opposite side to detachably connect and hold the lamp, and two lamp supporting springs, which are disposed on the opposite side of the mounting surface of the fixture body and detachably hold the lamp together with the lamp socket. Each lamp supporting spring is equidistant from the lamp socket in the circumferential direction of the lamp, and is connected to two virtual connecting points between a center of a virtual circle formed by a center line along the circumferential direction of the lamp and each lamp supporting spring. It is arranged so that the angle between the straight lines is 30 ° to 90 °, and the lamp can be easily attached and detached, and the lamp can be stably mounted. There is an effect that it is possible to reduce the fluctuation of the lamp due to the vibration of the fixture body.
[0029]
According to a second aspect of the present invention, in the first aspect of the present invention, the lamp socket has a cutout portion through which an electrode pin is inserted when the lamp is attached or detached, at a leading edge of the socket portion into which the base of the lamp is fitted. The flexure of the lamp support spring can be reduced when attaching and detaching, and there is an effect that the attaching and detaching operation of the lamp is further facilitated.
[Brief description of the drawings]
FIG. 1 is a schematic bottom view showing a main part of an embodiment.
FIG. 2 is a schematic bottom view of a main part showing the same.
FIG. 3 is a schematic exploded perspective view showing the same.
FIG. 4 is a schematic exploded perspective view of a main part showing the same.
FIG. 5 is a schematic sectional view of a main part showing the same.
FIG. 6 is an enlarged view of a main part of FIG. 5, showing the same as above.
7A and 7B show the same as above, wherein FIG. 7A is a schematic sectional view of a main part, and FIG. 7B is a schematic bottom view of a main part.
FIG. 8 is an enlarged perspective view of a main part of the above.
FIG. 9 is an explanatory diagram of how to remove the fluorescent lamp in the above.
FIG. 10 is an explanatory diagram of the lamp detachability and lamp swing in the above.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Instrument main body 3 Lamp socket 4 Reflector 7 Lamp support spring La Fluorescent lamp M21, M22 Virtual straight line O2 Center θ2 Angle

Claims (2)

The fixture body attached to the construction surface such as the ceiling, an annular lamp placed on the opposite side of the fixture body from the construction surface, and the fixture body arranged on the opposite side of the fixture body from the construction surface A lamp socket for detachably connecting and holding the lamp, and two lamp supporting springs disposed on the opposite side of the mounting surface of the fixture body to detachably hold the lamp together with the lamp socket. The angle formed by two virtual straight lines connecting the center of a virtual circle formed by the center line along the circumferential direction of the lamp and each of the lamp supporting springs at equal intervals from the lamp socket in the circumferential direction of the lamp is 30 °. A lighting fixture characterized by being arranged at an angle of about 90 °. 2. The lighting apparatus according to claim 1, wherein the lamp socket has a cutout portion through which an electrode pin is inserted when the lamp is attached or detached, at a leading edge of a socket portion into which a base of the lamp is fitted. 3.

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