JP2009158175A - Lighting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting device with a spiral glass arc tube, enabling safe and efficient installation of arc tubes having different base positions due to production tolerances and wattage differences. <P>SOLUTION: The lighting device includes a fluorescent lamp 5 of a spiral glass tube form having one pair of bases 23 at both outer ends of the tube and sockets 11 mounted on a device body 3 to electrically and mechanically connect the bases 23 of the fluorescent lamp 5. The sockets 11 are provided on the device body 3 so that the sockets can move from a place where the socket is connected to the base 23 along the axis line of the fluorescent lamp 5 and to the straight direction. This structure can absorb all displacements including the positional errors of the sockets and the bases due to wattage difference and production tolerances. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a lighting device using a fluorescent lamp.

Conventionally, as shown in FIG. 4, a fluorescent lamp 200 is proposed that includes an arc tube 201 in which a series of discharge paths are formed of a double spiral spiral glass tube on substantially the same plane.
The fluorescent lamp 200 is of a double base type, and is provided with a pair of bases 203 at both ends of a double spiral shape. The fluorescent lamp 200 having such a structure has a thickness about the tube diameter of the arc tube 201, and can provide a thin design as a lighting fixture, and is also substantially surface emitting. It can be employed in many scenes (see, for example, Patent Document 1).

JP 2006-12484 A

By the way, in general, the size of a fluorescent lamp increases as the wattage increases. In a straight tube type or a circular shape, there are standards for length and diameter according to the wattage. Also in the spiral illumination device shown in FIG. 4, the position of the pair of caps 203 is changed depending on the wattage. In addition, the position of the base 203 changes due to individual differences in the manufacture of fluorescent lamps. In this case, there is no directionality, there is displacement in every direction, and a problem occurs in workability. Furthermore, the possibility that a partial load is applied to the arc tube of the fluorescent lamp is increased, which causes a problem in safety.
For example, if the fluorescent lamp is forcibly attached to the luminaire body despite the large positional deviation, the fluorescent lamp may be damaged due to the difference in the base position, and output control with different wattage is possible. In such a case, an excessive current flows and there is a problem such as a significant decrease in the life of the fluorescent lamp.

  The present invention has been made to solve the conventional problems, and in an illuminating device having an arc tube composed of a spiral glass tube, it is possible to move a base position due to variations in manufacturing of a fluorescent lamp or a change in wattage. On the other hand, it aims at providing the illuminating device which can respond efficiently and safely.

  An illuminating device of the present invention includes a fluorescent lamp having a pair of caps at an outer peripheral end of a spiral glass tube, and a socket that is provided on a fixture body and electrically and mechanically connects the caps of the fluorescent lamps. In the lighting fixture, the socket has a configuration that is provided in the fixture main body so as to be movable in the fluorescent lamp axis direction and the orthogonal direction from the connection position with the base.

  With this configuration, the socket is movable in the fluorescent lamp axis direction and the orthogonal direction from the connection position with the base, so that the socket can be displaced due to a change in wattage or individual differences. It absorbs by being, can suppress the breakage of the fluorescent lamp, and can mount the fluorescent lamp with good workability and safety.

  Moreover, the illuminating device of this invention has the structure provided in the instrument main body so that the said socket is movable to the direction facing the said instrument main body.

  With this configuration, the socket is movable in the direction facing the instrument body, so that it can be moved in all directions. In addition to the positional deviation between the socket and the base due to changes in wattage or individual differences, all It is possible to cope with the displacement by moving the socket, and it is possible to suppress the breakage of the fluorescent lamp, and it is possible to mount and handle the fluorescent lamp more efficiently and safely.

  Moreover, the illuminating device of this invention has the structure which provided the elastic member between the said socket and the said instrument main body.

  With this configuration, the elastic member between the socket and the instrument main body absorbs all positional deviations such as a positional deviation between the socket and the base due to a change in wattage or individual differences. Therefore, breakage of the fluorescent lamp can be suppressed, and the fluorescent lamp can be mounted and handled more efficiently and safely.

  In the present invention, the socket of the lighting device is configured to be provided in the fixture main body so as to be movable in the fluorescent lamp axis direction and the orthogonal direction from the connection position with the base, and further, the specific configuration of this movable configuration is elastic. Since it is a member, it is possible to absorb all positional deviations such as a positional deviation between the socket and the base due to a change in wattage or individual differences. Accordingly, it is possible to provide a lighting device that can suppress the breakage of the fluorescent lamp, and has an effect that the fluorescent lamp can be mounted and handled more efficiently and safely.

Hereinafter, an illumination device according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is an exploded perspective view showing an illuminating device according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of the illuminating device of FIG. 1 taken along line AA without a fluorescent lamp, and FIGS. These are the fragmentary sectional views which show the form of the holding structure of a socket, respectively.
In each drawing, for convenience of explanation, the irradiation surface is shown facing upward. Therefore, when using the illuminating device 100 in a suspended state, the vertical positional relationship is reversed.

As shown in FIG. 1, the illuminating device 100 of embodiment which concerns on this invention is comprised from the main body 3, the fluorescent lamp 5, and the transparent cover 7 which make | form a substantially circular thin box shape. When these are assembled, the lighting device 100 is obtained.
The fluorescent lamp 5 is a series of discharge paths, which are substantially spirally wound in a double spiral shape, a pair of caps 23 disposed at both ends of the spiral arc tube 21, and both caps 23. Alternatively, it includes a bridge 25 that holds and fixes the arc tube 21 in the vicinity thereof and suppresses breakage of the arc tube 21.

  The bridge 25 is not an essential component of the arc tube 21, but this can stabilize the arrangement of the base 11 and improve the strength of the fluorescent lamp 5. Further, on the bridge 25, it is desirable to provide a filler between the base 11 and the adjacent arc tubes 21 or between the adjacent arc tubes 21. Thereby, the intensity | strength of the arc_tube | light_emitting_tube 21 can be increased and the heat dissipation of the lamp base 11 which generate | occur | produces can be aimed at.

Inside the main body 3, there is provided a flat base 15 that holds the fluorescent lamp 5 and is painted white and also serves as a reflector. The base 15 includes a pair of sockets 11 that are electrically connected to a pair of caps 23 of the fluorescent lamp 5 and a pair of fluorescent lamp support springs 13 that support the bridge 25 and fix the fluorescent lamp 5 to the base 15. It is done. On the back side of the base 15 with respect to the fluorescent lamp 5, as shown in FIG. 2, there is provided a space for wiring the lighting device 27 that supplies power to the fluorescent lamp 5 and the lamp line 28.
Further, the transparent cover 7 is made of, for example, polycarbonate resin and has translucency, and a hooking claw 9 is provided on the edge of the transparent cover 7 in the direction of the main body 3, and the hooking claw 9 is provided on the base 15. The transparent cover 7 is detachably fixed to the main body 3 by being engaged with the engaging holes 18.

Next, with reference to FIG. 2, a description will be given of how to deal with the positional deviation.
2 is a cross-sectional view taken along line AA in FIG. 1 in a state in which the fluorescent lamp 5 is not attached to the main body 3, and the position of the socket 11 on the fluorescent lamp 5 arrangement side on the base 15 is, for example, It is a position X (illustrated by a solid line and an alternate long and short dash line) to which a base 23 of a 20 W fluorescent lamp is attached. The socket 11 is fixedly supported on the base 15 by a fixing screw 29. Although not shown, the position of the fluorescent lamp support spring 13 also follows the position of the socket 11.
In addition, the transparent cover 7 which is a light projection side is the upper side in FIG. Further, a lighting device 27 together with a lamp wire 28 is provided on the back side of the base 15 with respect to the socket 11 in a state of being built in the main body 3.

The socket 11 is provided with a mechanism that is movable with respect to the fixed position X as in a configuration example described later, and is movable up to a range of a position Y (illustrated by a dotted line). When there is a manufacturing error in the base 23 of the fluorescent lamp 5 or when the base position is moved by changing the wattage, the fluorescent lamp 5 is adjusted within the range from the position X to the position Y, and an excessive stress is applied to the fluorescent lamp 5. It is not to take. That is, when the fluorescent lamp 5 is attached, the position of the socket 11 can be adjusted by moving the socket 11 with respect to the base 23, and good workability can be provided.
The range of the position Y follows the configuration of the movable mechanism of the socket 11, but it is preferable that the required range includes at least an error range at the time of manufacturing the fluorescent lamp or a variation range of the base position due to a change in wattage.

In this way, it is possible to use a plurality of fluorescent lamps 5 having different wattages, that is, use of the main body 3 having the same configuration, to support a fluorescent lamp having a plurality of wattages.
The shape of the main body 3 is a cylindrical shape corresponding to the shape of the fluorescent lamp in FIGS. 1 and 2, but is not limited to this, and the shape of the fluorescent lamp such as an elliptical shape or a polygonal shape is used. It does not have to be compatible.

  Furthermore, when the size of the fluorescent lamp 5 is specified by the wattage of the fluorescent lamp 5, the position of the socket 11 is also determined at the same time. Therefore, the wattage of the fluorescent lamp 5 can be specified by following this socket 11 position. In the lighting device 27, output control corresponding to the wattage of the fluorescent lamp can be performed according to the position of the socket 11 after the moving installation. Accordingly, it is possible to prevent an excessive current from flowing through the fluorescent lamp.

  And as a lighting control apparatus, it can respond to the output control in the fluorescent lamp from which a wattage differs with one inverter by utilizing a multi inverter. That is, the lighting device 27 provided on the back side of the base 15 with respect to the fluorescent lamp 5 can use a multi-inverter capable of supporting a plurality of wattages. In this case, a socket position setting means for specifying the wattage according to the position of the socket 11 and controlling the output control of the multi-inverter which is the lighting device 27 according to the specified wattage is provided. This socket position setting means is provided in the multi-inverter, and can set the set wattage by hand in the assembly process.

Next, the movable configuration of the socket 11 will be described with reference to FIG.
FIG. 3A shows a partial cross section of the socket 11 in the lighting device 100.
As described above, the socket 11 is fixed to the base 15 by the fixing screw 29. At this time, the fixing screw 29 is configured to fix the fixing portion 11 b disposed in the base portion 11 a of the socket 11 to the base 15. In the base portion 11a, a movable spring 11c is disposed between the inner surface of the base portion 11a and the outer surface of the fixed portion 11b, and holds the socket 11 in a movable state.

  As described above, when there is a manufacturing error in the base 23 of the fluorescent lamp 5 or when the base position is moved by changing the wattage, the socket 11 is moved in accordance with the position of the base 23. At this time, the fixed portion 11b stays at the same position on the base 15 by the fixing screw 29, and only the upper socket 11 is moved from the base portion 11a by the action of the movable spring 11c, and the displacement is adjusted within the range from the position X to the position Y. The base 23 is connected to the socket 11.

In this way, by connecting the movable spring 11c while absorbing the positional deviation, the fluorescent lamp 5 is not subjected to excessive stress. That is, when the fluorescent lamp 5 is attached, the position of the socket 11 can be adjusted by moving the socket 11 with respect to the base 23, and good workability can be provided.
Further, the function of adjusting the positional deviation works effectively even after the fluorescent lamp 5 is attached to the main body 3. In other words. The pair of caps 23 have an action / reaction caused by the stress of the fluorescent lamp 5, and the action / reaction is absorbed / adjusted by the movable spring 11c so that the fluorescent lamp 5 is centered in a stress balanced state. It is possible to keep the stable state even after the fluorescent lamp is attached.

  In addition, at the time of such misalignment adjustment, a switching in the lighting device 27 is performed by providing a position detection rod or an electrical position detection means that moves together with the socket between the lighting device 27 and the socket 11. It is also possible to carry out output control based on the wattage.

  FIG. 3B shows another embodiment of the movable configuration of the socket 11, in which the movable spring 11 c of FIG. 3A is replaced with a movable rubber 11 g. Although it is substantially the same as the movable spring 11c in terms of operation, since the vibration absorbing function is high, the stability after installing the fluorescent lamp can be further improved.

  As the movable configuration of the socket 11, the movable spring 11c may be eliminated, and the fixed screw 29 may be configured to slide on the base 15.

  As described above, the illuminating device according to the present invention is configured to be provided in the instrument main body so as to be movable in the fluorescent lamp axis direction and the orthogonal direction from the connection position with the base. Since the structure is an elastic member, it is possible to absorb all the positional deviations such as the positional deviation between the socket and the base due to the change in wattage or individual differences. Therefore, breakage of the fluorescent lamp can be suppressed, and it is useful as an illuminating device capable of mounting and handling the fluorescent lamp more efficiently and safely.

It is a disassembled perspective view which shows the illuminating device of embodiment which concerns on this invention. It is sectional drawing of the AA line in the state without the fluorescent lamp of an illuminating device. (A) (b) is a fragmentary sectional view which shows the form of the holding structure of a socket, respectively. (A) is a top view which shows the conventional illuminating device, (B) is a side view which shows the conventional illuminating device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Lighting fixture 3 Main body 5 Fluorescent lamp 7 Transparent cover 11 Socket 11a Base part 11b Fixed part 11c Movable spring 11g Movable rubber 13 Fluorescent lamp support spring 15 Base 21 Light emitting tube 23 Base 25 Bridge 27 Lighting device 29 Fixed screw

Claims (3)

In a lighting fixture comprising a fluorescent lamp having a pair of caps at the outer peripheral end of the spiral glass tube, and a socket provided in the fixture main body for electrically and mechanically connecting the cap of the fluorescent lamp,
The socket is provided in the fixture main body so as to be movable in the fluorescent lamp axis direction and the orthogonal direction from the connection position with the base.   The lighting fixture according to claim 1, wherein the socket is provided in the fixture main body so as to be movable in a direction opposite to the fixture main body.   The lighting apparatus according to claim 1, wherein an elastic member is provided between the socket and the apparatus main body.

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