JP2009176656A - Lighting apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting apparatus achieved in the reduction of a thickness even if a plane spiral type fluorescent lamp is used. <P>SOLUTION: Since a lamp support spring 18 holding a fluorescent lamp 20 supports a base 23, the heat of the base 23 heated by a filament 25 can be released to an apparatus body 12 through the lamp support spring 18, and a temperature rise of the base 23 can be suppressed. Furthermore, the lamp support spring 18 covers the panel 13 side of a portion 22b corresponding to the filament 25 at the arc tube end, heat from the filament 25 heating the panel 13 can be shielded, and thereby, the spacing between the fluorescent lamp 20 and the panel 13 can be made small, thus achieving the thin thickness of the lighting apparatus 10. <P>COPYRIGHT: (C)2009,JPO&INPIT

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.

Conventionally, a fluorescent lamp in which a discharge path is swirled in a double spiral shape is known (see, for example, Patent Document 1).
As shown in FIGS. 7A and 7B, in the fluorescent lamp 100 described in Patent Document 1, the tubular discharge path swirls in a double spiral shape along substantially the same plane with the longitudinal center portion 101a as the center. The arc tube 101 is provided, and a bridge 102 is provided on the back surface (on the side opposite to the light emitting surface) to connect both end portions 101b and 101b of the arc tube 101 through the central portion 101a. A base 103 is provided at the center of the bridge 102 so as to protrude from the back side, and a lamp pin 104 is provided at the center of the base 103. Further, a plurality of arc tube holding members 102 a and 102 a are provided through the fluorescent lamp 100 from the bridge 102, and hold an intermediate portion of the arc tube 101. Further, a pair of holding handles 103a and 103a are provided so as to protrude from the base 103 to the back side.

In addition, filaments (not shown) are hermetically sealed inside both ends 101b and 101b of the arc tube 101, and are installed between electrode lead wires (not shown). The electrode lead wire extends to the base 103 along the bridge 102 and is connected to the lamp pin 104.
JP 2007-273334 A (FIG. 2)

  However, when the fluorescent lamp 100 described in Patent Document 1 described above is used in a lighting fixture, the arc tube end portion 101b on which the filament is provided becomes hot when it is turned on. There is a problem that it is necessary to provide a sufficient space between the lamp 100 and the thinning of the lighting fixture is hindered.

  The present invention has been made to solve the conventional problems, and an object of the present invention is to provide a lighting apparatus that can be thinned even when a flat spiral fluorescent lamp is used.

  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. A fluorescent lamp comprising a base, a lamp pin provided in the base and extending along the axial direction of the arc tube, and a bridge for connecting and supporting the pair of bases; and the lamp pin electrically connected to the lamp pin A lamp socket for supplying electric power to the fluorescent lamp, 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, and an attachment to the instrument body And a panel covering the front surface of the fluorescent lamp, wherein the lamp support spring holds the base and at the end of the arc tube It has a configuration which covers the panel side of the portion corresponding to the Iramento.

  With this configuration, since the lamp support spring that holds the fluorescent lamp holds the base, the heat of the base heated by the filament can be released to the instrument body through the lamp support spring, and the temperature rise of the base can be suppressed. In addition, since the support spring covers the panel side of the portion corresponding to the filament at the end of the arc tube, the heat from the filament heating the panel can be cut off, and the distance between the fluorescent lamp and the panel is reduced. Further, it is possible to reduce the thickness of the lighting fixture.

  Further, the lighting fixture of the present invention has a configuration in which the lamp support spring is in contact with the base on the side opposite to the panel side and does not cover a portion corresponding to the filament at the end of the arc tube. .

  With this configuration, the lamp support spring is in contact with the base, so that the heat of the base can be released to the fixture body and the temperature rise can be suppressed, and the part corresponding to the filament is not covered on the opposite side of the panel, so the fluorescent lamp Can be easily attached to the lamp support spring.

  Further, in the lighting fixture according to the present invention, the lamp support spring includes a base holding portion that holds the base from a side surface, and a shielding portion that covers the panel side of the portion corresponding to the filament at the arc tube end. And the said shielding part has the structure protruded by the same curved surface along the said filament side from the said base holding | maintenance part.

  With this configuration, since the base holding part of the lamp support spring contacts and holds the base of the fluorescent lamp, the heat of the base can be released to the instrument body to suppress the temperature rise, and the shielding part corresponds to the filament. Since the panel side of the part is covered, it is possible to prevent the panel from being heated by the heat of the filament.

  In the present invention, since the lamp support spring holding the fluorescent lamp holds the base, the heat of the base heated by the filament can be released to the instrument body through the lamp support spring, and the temperature rise of the base can be suppressed. In addition, since the support spring covers the panel side of the portion corresponding to the filament at the end of the arc tube, the heat from the filament heating the panel can be cut off, and the distance between the fluorescent lamp and the panel is reduced. Thus, it is possible to provide a lighting fixture having an effect that 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 supporting spring, FIG. 4B is a plan view, FIG. 4C is a side view, and FIG. Is a perspective view showing the mounting position of the lamp support spring, FIG. 5B is a perspective view showing a state in which the flat spiral fluorescent lamp is held by the lamp support spring, and FIG. 6A is a reflection plate of the flat spiral fluorescent lamp. FIG. 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, which is the surface facing the flat spiral fluorescent lamp 20 in the instrument body 12, the base of the flat spiral fluorescent lamp 20 is attached. A lamp support spring 18 is provided to hold 23.

  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.

  4A to 4C, the lamp support spring 18 includes a base holding portion 18a that holds the base 23 from the side surface, and a portion 22b corresponding to the filament 25 at the end of the arc tube 22 on the panel 13 side. A shielding part 18b covering (upper), and the shielding part 18b protrudes from the base holding part 18a along the filament 25 side on the same curved surface. The lamp support spring 18 is preferably made of metal having good thermal conductivity and good heat dissipation.

  The upper end portions of the base holding portion 18a and the shielding portion 18b are provided with a folded portion 18e that is folded outward to make it easy to attach the flat spiral fluorescent lamp 20 to the lamp support spring 18. The base holding part 18a is provided integrally with the support part 18c and the base part 18d, and the base part 18d is attached to the reflecting plate 16 by screws, for example. Before the flat spiral fluorescent lamp 20 is mounted, the lamp support spring 18 is attached to the flat spiral fluorescent lamp 20 so as to be offset in the direction of arrow A in FIG. Is attached in the direction of the arrow A and is securely held.

  Further, the lamp support spring 18 is in contact with the base 23 on the side opposite to the panel 13 side (lower side in FIG. 6B) and does not cover the portion 22b corresponding to the filament 25 at the end of the arc tube 22. It is desirable to do. That is, the shielding portion 18b covers the outside (that is, the side opposite to the center of the flat spiral fluorescent lamp 20) and the upper portion (that is, the panel 13 side) of the portion 22b corresponding to the filament 25, but does not cover the inside and the bottom side. To. Accordingly, the flat spiral fluorescent lamp 20 can be easily attached and detached by the lamp support spring 18. In addition, since the range covered with the shielding part 18b is limited to the part 22b corresponding to the filament 25, the appearance is not impaired.

  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, the base 23 is held by the base holding part 18a of the lamp support spring 18, and the part 22b corresponding to the filament 25 is covered by the shielding part 18b (see FIG. 5B). ). Thereafter, the handle 17e of the lamp socket 17 is operated to close the open / close lid 17d (see FIGS. 6A to 6C).

  According to the lighting fixture 10 described above, since the lamp support spring 18 that holds the flat spiral fluorescent lamp 20 holds the base 23, the heat of the base 23 heated by the filament 25 is passed through the lamp support spring 18 to the main body of the fixture. 12 and the temperature rise of the base 23 can be suppressed. Moreover, since the support spring 18 covers the panel 13 side of the portion 22b corresponding to the filament 25 at the end of the arc tube 22, the heat from the filament 25 for heating the panel 13 can be blocked (FIG. 6A). , (B)), by reducing the distance between the flat spiral fluorescent lamp 20 and the panel 13, the lighting fixture 10 can be thinned.

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 as seen from the B direction in (A). Perspective view of lamp socket (A) is a front view of the lamp support spring, (B) is a plan view, and (C) 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. (A) is a sectional view showing a conventional flat spiral fluorescent lamp, and (B) is a side 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 18a Cap holder 18b Shield 20 Flat spiral fluorescent lamp (fluorescent lamp)
21 lamp pin 22 arc tube 23 base 24 bridge 25 filament 22b part corresponding to filament

Claims (3)

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 fluorescent lamp having a lamp pin extending along the axial direction of the arc tube and a bridge for connecting and supporting the pair of caps;
A lamp socket that is electrically connected to the lamp pin to supply power to the fluorescent lamp;
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 fixture body and covering the front surface of the fluorescent lamp, and a lighting fixture comprising:
The lamp support spring holds the base and covers the panel side of the portion corresponding to the filament at the arc tube end.   2. The lighting apparatus according to claim 1, wherein the lamp support spring is in contact with the base on the side opposite to the panel side and does not cover a portion corresponding to the filament at the end of the arc tube. The lamp support spring has a base holding part that holds the base from the side surface, and a shielding part that covers the panel side of the portion corresponding to the filament of the arc tube end,
The lighting apparatus according to claim 1, wherein the shielding part protrudes from the base holding part along the filament side along the same curved surface.

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