JP5127044B2 - lighting equipment - Google Patents

Description

  The present invention relates to a luminaire having a fluorescent lamp in which a tubular discharge path is swirled in a double spiral along substantially the same plane with a central portion in the longitudinal direction as a center.

  2. Description of the Related Art Conventionally, there is known a lighting fixture that holds an arc tube of a fluorescent lamp with a lamp support spring (see, for example, Patent Documents 1 and 2).

  As shown in FIG. 7, the lighting fixture 100 described in Patent Document 1 includes a fixture main body 101, and a large-diameter annular fluorescent lamp 102 and a small-diameter annular fluorescent lamp 103 that are detachably attached to the fixture main body 101. Are concentrically. A single base 104 is attached to the large-diameter and small-diameter annular fluorescent lamps 102 and 103. A bridge 105 is provided between the arc tubes of the large-diameter and small-diameter annular fluorescent lamps 102 and 103. These annular fluorescent lamps 102 and 103 are held on the instrument body 101 by a plurality of lamp support springs 106.

  Further, as shown in FIGS. 8A to 8C, in the fluorescent lamp 110 described in Patent Document 2, the tubular discharge path has a double spiral shape along substantially the same plane with the longitudinal center portion 111a as the center. And a bridge 112 that connects both ends 111b and 111b of the arc tube 111 through the central portion 111a on the back surface (the side opposite to the light emitting surface). A base 113 is provided at the center of the bridge 112 so as to protrude rearward, and a lamp pin 114 is provided at the center of the base 113. Further, a plurality of arc tube holding members 112 a and 112 a are provided through the fluorescent lamp 110 from the bridge 112, and hold an intermediate portion of the arc tube 111. Further, a pair of holding handles 113a and 113a are provided so as to protrude from the base 113 to the back side.

Also, tungsten filament coil electrodes 115 and 115 are sealed as electrodes inside both ends 111b and 111b of the arc tube 111, and are laid between electrode lead wires (not shown). The electrode lead wire extends to the base 113 along the bridge 112 and is connected to the lamp pin 114. At both ends 111b and 111b of the arc tube 111, arc tube holding portions 116 and 116 are provided.
Japanese Patent Laid-Open No. 2000-231823 (FIG. 1) JP 2007-273336 A (FIG. 2)

  However, in the lighting fixtures described in Patent Documents 1 and 2 described above, when the fluorescent lamps 102, 103, and 110 are turned on, the ends of the arc tube provided with the filament become high temperature. There is a problem that it is necessary to provide a sufficient space between the cover that covers the front surface and the fluorescent lamps 102, 103, and 110, which hinders thinning of the lighting fixture.

  The present invention has been made to solve the conventional problems, and an object of the present invention is to provide a lighting fixture that can be thinned using a fluorescent lamp.

The luminaire of the present invention includes a light emitting tube in which a tubular discharge path is swirled in a double spiral shape along a substantially same plane with a central portion in the longitudinal direction as a center, and a pair of electrodes provided at both ends of the light emitting tube. and the base, a pair of lamp pins provided in said ferrule, each lamp pin is, while being arranged in a direction perpendicular to the substantially same plane, and a pair of lamp pins extending along an axial direction of the arc tube, and a flat spiral-shaped fluorescent lamp having a bridge connecting support between the pair of the base, along with supplying power to the pair of lamp pins electrically connected to to the fluorescent lamp, for inserting the pair of lamp pins the lamp pins and lamp socket having an insertion groove, wherein the lamp support spring for holding the fluorescent lamp, the lamp socket and the through the lamp support spring fluorescent lamp Includes a fixture main body for holding therein, and a panel for covering the front of the mounted by the fluorescent lamp on the instrument body, each of the pair of lamp pins can protrude one end along the axial direction of the arc tube, the other The end is connected to a filament provided at the inner end of the arc tube, and the longitudinal central portion of the tubular discharge path is the central portion of the arc tube, and the most of the arc tubes The lamp support spring is formed of a material having a good thermal conductivity, and the pair of bases and the pair of bases in the longitudinal direction of the tubular discharge path. be between the coldest point of the arc tube, the Keru you to the ends of the arc tube adjacent to each of said pair of die, the portion corresponding to the filament, and held from the side, further, the lamp support The spring A holding portion having a shape corresponding to the arc of the tube, and a folded portion that is folded outward at the upper end portion of the holding portion so that the flat spiral fluorescent lamp can be easily attached to the lamp support spring. and which, the holding portion has a structure that is attached to the instrument body through the support portion.

  With this configuration, the lamp support spring that holds the fluorescent lamp is formed of a material having good thermal conductivity (for example, a metal such as SK material or SUS), and the end of the arc tube heated by the filament is held. The heat of the tube can be released to the fixture body through the lamp support spring, and the temperature rise of the arc tube can be suppressed. Accordingly, the distance between the fluorescent lamp and the panel can be reduced, and the lighting fixture can be reduced in thickness.

  Moreover, the lighting fixture of this invention has the structure which provided the flame-retardant thin layer which has elasticity in the surface which touches the said arc_tube | light_emitting_tube in the said lamp support spring.

  With this configuration, an elastic flame-retardant (for example, silicon) thin layer (for example, 0.5 mm to 1.0 mm) is provided on the surface of the lamp support spring that contacts the arc tube. It can be in close contact with the arc tube, and the heat of the arc tube can be efficiently transferred to the lamp support spring and further transferred to the fixture body for heat dissipation.

  In the present invention, the lamp support spring for holding the fluorescent lamp is formed of a material having good thermal conductivity, and the end of the arc tube heated by the filament is held. Therefore, the heat of the arc tube is transmitted to the instrument body through the lamp support spring. It is possible to escape, and the temperature rise of the arc tube can be suppressed. Along with this, it is possible to provide a lighting fixture having an effect that the interval between the fluorescent lamp and the panel can be reduced and the lighting fixture can be thinned.

Hereinafter, the lighting fixture of embodiment of this invention is demonstrated using drawing.
FIG. 1 is an exploded perspective view showing a lighting apparatus according to a first embodiment of the present invention, FIG. 2A is a plan view of a flat spiral fluorescent lamp, and FIG. 2B is a view from B direction in FIG. 3 is a perspective view of the lamp socket, FIG. 4A is a front view of the lamp support spring, FIG. 4B is a side view, and FIG. 5A is a mounting position of the lamp support spring. FIG. 5B is a perspective view showing a state in which a flat spiral fluorescent lamp is held by a lamp support spring, and FIG. 6A is a plan view showing a state in which the flat spiral fluorescent lamp is mounted on a reflector. 6B is a side view, and FIG. 6C is a plan view.

  As shown in FIG. 1, a lighting device 10 according to the present invention is used by being fixed to a wall surface 11 such as a ceiling or a wall. For example, a rectangular box-shaped device body 12 and a front opening of the device body 12 are provided. A panel 13 made of a transparent or translucent resin or the like is provided. An electrical component such as a lighting device 14 connected to a commercial AC power supply (not shown) is attached to the bottom plate 12a of the appliance main body 12 near one end, and covers the lighting device 14 and the panel 13. A mounting plate 15 for mounting is provided. The panel 13 is detachably attached by screwing the screw 13a into the screw hole 15a of the attachment plate 15 and tightening.

  Further, a reflector 16 is provided from the center and the other end of the bottom plate 12 to reflect the illumination light of the flat spiral fluorescent lamp 20 as a fluorescent lamp toward the panel 13 and improve the illumination efficiency. A pair of lamp sockets 17 and 17 for mounting the flat spiral fluorescent lamp 20 are attached to the upper surface of the reflection plate 16. These lamp sockets 17 and 17 are connected to the lighting device 14 by power lines (not shown). When the flat spiral fluorescent lamp 20 is mounted on the lamp socket 17 on the upper surface of the reflector 16 that is a surface facing the flat spiral fluorescent lamp 20 in the instrument body 12, the flat spiral fluorescent lamp 20 is held. A lamp support spring 18 is provided.

  As shown in FIG. 2, the flat spiral fluorescent lamp 20 has an arc tube 22 in which a tubular discharge path is swirled in a double spiral shape along the same plane starting from the longitudinal center portion 22a. The central portion 22a of the arc tube 22 has a larger diameter than the other portions and is the coldest point. Bases 23 and 23 are respectively attached to both ends of the arc tube 22, and both the caps 23 and 23 are provided at point-symmetrical positions with respect to the central portion 22 a of the arc tube 22. Both the caps 23 and 23 are connected by a bridge 24 provided on the back surface opposite to the irradiation direction. Each of the caps 23, 23 is provided with a pair of lamp pins 21 protruding in the direction perpendicular to the plane of the flat spiral fluorescent lamp 20 with one end projecting along the axial direction of the arc tube 22, and the other end emitting light. It is connected to a filament 25 (see FIG. 5A) provided at the inner end of the tube 22.

  As shown in FIG. 3, the lamp socket 17 has, for example, a cylindrical main body 17a, and the main body 17a is provided with a lamp pin insertion groove 17b for inserting the lamp pin 21. A pair of conductive plates 17c and 17c are provided inside the lamp pin insertion groove 17b to hold and connect the pair of lamp pins 21 and 21. In addition, an opening / closing lid 17d for closing the lamp pin insertion groove 17b is provided along the outer peripheral surface of the main body 17a.

  As shown in FIGS. 4A and 4B, the lamp support spring 18 includes a holding portion 18a that holds the portion 22b corresponding to the filament 25 at the end of the arc tube 22 from the side surface, and the holding portion 18a. Is attached to the reflecting plate 16 with screws or the like via the support portion 18b and the base portion 18c. Further, the upper end portion of the holding portion 18 a is provided with a folded portion 18 d that is folded outward to facilitate attachment of the flat spiral fluorescent lamp 20 to the lamp support spring 18.

  The lamp support spring 18 is formed of a metal such as SK material or SUS, which has good thermal conductivity and good heat dissipation. Before the flat spiral fluorescent lamp 20 is attached, the lamp support spring 18 is attached to the flat spiral fluorescent lamp 20 so as to be offset from the position of the flat spiral fluorescent lamp 20 in the direction of arrow A in FIG. Is attached in the direction of the arrow A and is securely held.

  In addition, at a portion in contact with the arc tube 22, that is, the holding portion 18a and the folded portion 18d, at least on the surface on the arc tube 22 side (the right surface in FIG. 4B), a flame-retardant material having elasticity, for example, silicon It is desirable to provide a thin layer 19 (for example, 0.5 mm to 1.0 mm thick) formed by, for example. As a result, the lamp support spring 18 can be brought into close contact with the arc tube 22 of the flat spiral fluorescent lamp 20, and the heat of the arc tube 22 is efficiently transferred to the lamp support spring 18 and further transferred to the fixture body 12. It can dissipate heat. FIG. 4 shows the case where the thin layers 19 are provided on both surfaces of the holding portion 18a and the folded portion 18d.

  When attaching the flat spiral fluorescent lamp 20 to the instrument body 12, as shown in FIG. 5 (A), the lamp pins 21, 21 provided on the caps 23, 23 at both ends of the flat spiral fluorescent lamp 20, The lamp socket 17 is positioned in the lamp pin insertion groove 17a. Then, the lamp pin 21 is inserted into the lamp socket 17, and the filament corresponding portion 22b of the arc tube 22 is held by the holding portion 18a of the lamp support spring 18 (see FIG. 5B). Thereafter, the handle 17e of the lamp socket 17 is operated and the open / close lid 17d is closed to fix the lamp socket 17 (see FIGS. 6A to 6C).

  As described above, according to the luminaire 10 described above, the lamp support spring 18 that holds the flat spiral fluorescent lamp 20 is formed of a material having good thermal conductivity, and the end of the arc tube 22 that is heated by the filament 25 is held. Therefore, the heat of the arc tube 22 can be released to the fixture body 12 through the lamp support spring 18, and the temperature rise of the arc tube 22 can be suppressed. In connection with this, the space | interval of the flat spiral fluorescent lamp 20 and the panel 13 can be made small, and thickness reduction of the lighting fixture 10 can be achieved.

In addition, the lighting fixture of this invention is not limited to embodiment mentioned above, A suitable deformation | transformation, improvement, etc. are possible.
For example, in each embodiment mentioned above, although the rectangular box-shaped instrument main body 12 was illustrated, it is not restricted to this, For example, it can apply also to circular box shape etc.

The disassembled perspective view which shows the lighting fixture concerning 1st Embodiment of this invention. (A) is a plan view of a flat spiral fluorescent lamp, (B) is a front view seen from the B direction in FIG. 2 (A). Perspective view of lamp socket (A) is a front view of a lamp support spring, (B) is a side view. (A) is a perspective view showing the mounting position of the lamp support spring, (B) is a perspective view showing a state in which the flat spiral fluorescent lamp is held by the lamp support spring. (A) is a plan view showing a state in which a flat spiral fluorescent lamp is mounted on a reflector, (B) is a side view, and (C) is a plan view. The perspective view which shows the conventional lighting fixture (A) is the perspective view seen from the light irradiation surface side which shows the conventional fluorescent lamp, (B) is the perspective view seen from the opposite side, (C) is a top view

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Lighting fixture 12 Appliance main body 13 Panel 16 Reflecting plate (facing surface)
17 Lamp socket 18 Lamp support spring 19 Thin layer 20 Flat spiral fluorescent lamp (fluorescent lamp)
21 lamp pin 22 arc tube 22a central part 22b part corresponding to filament 23 base 24 bridge 25 filament

Claims (2)

An arc tube in which a tubular discharge path is swirled in a double spiral along substantially the same plane with the central portion in the longitudinal direction as a center, a pair of caps provided at both ends of the arc tube, and a cap provided on the cap A pair of lamp pins, each lamp pin being disposed in a direction orthogonal to the substantially same plane and connecting between the pair of lamp pins and the pair of caps extending along the axial direction of the arc tube A planar helical fluorescent lamp with a supporting bridge;
With supplying power to the fluorescent lamp are connected the pair of lamp pins electrically, the lamp socket having a lamp pins insertion groove for inserting the pair of lamp pins,
A lamp support spring for holding the fluorescent lamp;
An instrument body for holding the fluorescent lamp inside via the lamp socket and the lamp support spring;
A panel attached to the instrument body and covering the front surface of the fluorescent lamp,
Each of the pair of lamp pins has one end protruding along the axial direction of the arc tube, and the other end connected to a filament provided at the inner end of the arc tube ,
The central portion in the longitudinal direction of the tubular discharge path is the central portion of the arc tube, and is also the coldest point where the temperature is the lowest among the arc tubes,
The lamp support spring is formed of a material having good thermal conductivity, and is between each of the pair of bases and the coldest point of the arc tube in the longitudinal direction of the tubular discharge path. the Keru you to the ends of the arc tube adjacent to each of said pair of die, the portion corresponding to the filament, and held from the side,
Furthermore, the lamp support spring is folded back outward at the holding portion having a shape corresponding to the arc of the arc tube and the upper end of the holding portion, so that the flat spiral fluorescent lamp can be easily attached to the lamp support spring. to have a folded portion, the are, the holder luminaires characterized that you have attached to the instrument body through the support portion.   The lighting fixture according to claim 1, wherein a flame-retardant thin layer having elasticity is provided on a surface of the lamp support spring in contact with the arc tube.

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