JP2008269873A - Luminaire for annular fluorescent lamp - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a catch type luminaire for an annular fluorescent lamp capable of preventing occurrence of engagement deviation between a power feeding pin and a pin hole of a catch socket which is caused by reaction force of a lamp support spring even if the outer diameter of a lamp circle of a used annular fluorescent lamp is increased. <P>SOLUTION: In this catch type luminaire 1 for an annular fluorescent lamp, two lamp support springs 12 provided for a luminaire body 7 are arranged on a line passing through a center point of the luminaire body 2 and orthogonal to a line connecting the center point to the catch socket 11 on both its sides at equal distances therefrom, and hold the annular fluorescent lamp at the positions thereof. Accordingly, a force component in a direction for pressing the annular fluorescent lamp 20 toward the power feeding pins 71 from the lamp holding parts 12b of the catch socket 11 is hardly generated, and the power feeding pins 21 are prevented from getting out of the catch socket 11 even when the outer diameter of the lamp circle of the annular fluorescent lamp 20 changes. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an annular fluorescent lamp luminaire, and more particularly to a horizontal catch socket type luminaire for an annular fluorescent lamp.

  Conventionally, an annular fluorescent lamp is mounted on an annular fluorescent lamp luminaire by attaching an annular fluorescent lamp with a lamp support spring (lamp holder) made of elastic strips, which are arranged at three regular angles from the center of the luminaire main body. It was held in the instrument body, and a socket connected to the instrument body via a cord was inserted into the power supply pin of the annular fluorescent lamp held and used.

  However, in this configuration, when attaching / detaching, two operations are required to fix or remove the annular fluorescent lamp to / from the fixture body via the three lamp support springs and to insert / extract the socket from / to the power supply pin of the lamp cap. In addition, since the appliance is often located at a high position from the floor surface, there is a problem that it is not easy to perform the work because it takes time and labor when replacing the lamp.

  Therefore, a catch socket having a power supply pin hole at the position where one of the three lamp support springs of the fixture body is provided is arranged so that the pin hole is parallel to the annular fluorescent lamp mounting surface. With the annular fluorescent lamp aligned with the remaining two lamp support springs, the power supply pin of the lamp is pushed horizontally into the pin hole of the catch socket to fix the annular fluorescent lamp in that position, and remains at the same time. A lamp mounting method called horizontal catch socket type (catch type and abbreviated name) in which the annular fluorescent lamp is pushed into the two lamp support springs and the annular fluorescent lamp is fixed at three points of the catch socket and the two lamp support springs. Has been developed and put to practical use.

  In the case of the catch type, the annular fluorescent lamp is fixed and fed at the same time by simply pushing the annular fluorescent lamp horizontally into the fixture body, and after three lamp support springs are pushed open as before, the lamp is attached. The operation of attaching the socket to the power supply pin is no longer necessary, saving labor and increasing safety. In addition, the number of lamp support springs can be reduced from three to two.

  Usually, the angle between the catch socket and the two lamp support springs on the mounting surface of the fixture body is the same angle (120 degrees) around the fixture center as in the conventional method. Many.

In Patent Document 1 (Japanese Patent Laid-Open No. 2004-134126), two lamp support springs (lamp holders) are arranged at equal intervals from the lamp socket in the circumferential direction of the fixture body, and each lamp support spring is arranged around the fluorescent lamp. It is arranged so that the angle between two virtual straight lines connecting the center of the virtual circle formed by the center line along the direction and each lamp support spring is 30 ° to 90 °, so that the lamp can be easily attached and detached. In addition, a lighting fixture is disclosed in which the lamp does not sway due to vibration of the fixture body.
JP 2004-134126 A

  Although the structure of the lighting fixture described in Patent Document 1 is similar to the catch type, the lamp pin is pushed into the socket from the lower side after the lamp is held by the lamp support spring, and a downward force is applied to the pin portion of the lamp. May add to the socket. The catch type does not come off even if downward force is applied.

  2A and 2B are schematic external views of a conventional catch-type annular fluorescent lamp lighting fixture, in which FIG. 2A is a side view and FIG. 2B is a bottom view. A catch socket that engages with the power supply pin 71 of the lamp cap 72 of the annular fluorescent lamp 70 and supplies power to the power supply pin 71 at a portion surrounded by the annular fluorescent lamp 70 of the fixture main body 7 of the catch-type annular fluorescent lamp lighting device 6. 61 and two lamp support springs 62 (lamp holders) arranged so that each of them including the catch socket 61 is at an angle close to the same angle with the central portion of the instrument body 7 as the center. The lamp support spring 62 includes a base 62 a fixed to the instrument body 7, and a lamp holder 62 b that is connected to the base 62 a and has a semicircular cross section. The lamp holder 62 b The annular fluorescent lamp 70 that opens toward the center and is pressed by the elasticity of the spring toward the center of the instrument body 7 is fixed.

  In the case of the catch-type annular fluorescent lamp lighting fixture 6, when the position of the lamp support spring 62 is 0 ° from the center of the fixture body 7 to the catch socket 61 of the fluorescent lamp, the angle β in FIG. It was common to be at a position that would be °.

  However, since the outer dimensions of the lamp circle of the annular fluorescent lamp 70 vary within the standard range depending on the manufacturer, the outer dimensions of the lamp circle of the attached annular fluorescent lamp 70 are not constant and different.

  When the position of the lamp support spring 62 is set so that the annular fluorescent lamp 70 having the smallest outer diameter of the lamp circle can be stably held, when the annular fluorescent lamp 70 having a large outer diameter is attached, the lamp support spring 62 is supported. The lamp holding part 62b that contacts the annular fluorescent lamp 70 of the spring 62 is pushed out. As a result, the reaction force applied to the side surface of the annular fluorescent lamp 70 from the lamp holding portion 62b of the elastic lamp support spring 62 increases, and the pressing force F shown in FIG. Since the component force y in the vertical direction to the straight line connecting the catch socket 61 and the center of the annular fluorescent lamp 70 is in the opposite direction between the left and right lamp support springs 62, the component force x in the horizontal direction is canceled out. Also acts as a force for pushing the annular fluorescent lamp 70 toward the catch socket 61 side.

  If this pushing force exceeds the holding force between the power supply pin 71 of the annular fluorescent lamp 70 and the pin hole of the catch socket 61, the engagement between the power supply pin 71 and the pin hole of the catch socket 61 is shifted, resulting in poor contact. In the worst case, there is a problem that there is even a possibility of overheating. In an extreme case, the feeding pin 71 may come off from the catch socket 61 and the annular fluorescent lamp 70 may come off the instrument body 7 and fall.

  Further, when the reaction force F increases, it becomes difficult to open the lamp holding portion 62b, and it becomes difficult to attach and remove the annular fluorescent lamp 70 to and from the lamp holding portion 62b.

  An object of the present invention is to provide a catch-type annular fluorescent lamp that does not cause an engagement shift between a power supply pin and a pin hole of a catch socket, which is generated by a reaction force of a lamp support spring, even if the outer diameter of a lamp circle of the annular fluorescent lamp to be used increases. The object is to provide a lamp luminaire.

The lighting apparatus for the annular fluorescent lamp of the present invention,
Each of the lamps includes a catch socket provided on a side of the fixture main body of the lighting fixture that holds the annular fluorescent lamp that faces the inner diameter side of the annular fluorescent lamp, and two lamp support springs that hold the annular fluorescent lamp. The support spring has a lamp holding portion and a base portion connected to the lamp holding portion and fixed to the fixture main body, and the lamp holding portion is a semicircular cross section aligned with the side surface of the annular fluorescent lamp held by the fixture main body. The lamp holding part holds the lamp holding part so that the lamp holding part presses the side surface of the annular fluorescent lamp, and the lamp holding part connects the center point of the fixture body and the center of the catch socket. It is provided on a line that intersects with the line within an angle within a predetermined range centered at 90 ° and passes through the center point.

  The angle within a predetermined range centering on 90 ° may be 90 ° ± 10 °, and desirably 90 ° ± 1 °.

  The lamp holding part is provided on a line passing through the center point intersecting the line connecting the center point of the fixture body and the center of the catch socket within an angle of a predetermined range centered on 90 °. The pressing force of the holding part has almost no component force toward the lamp cap.

  The annular fluorescent lamp illuminator is an annular fluorescent lamp illuminator to which two types of annular fluorescent lamps having different circle diameters can be attached, and a catch socket and a lamp support spring are provided corresponding to each annular fluorescent lamp. It may be done.

  According to the present invention, in the catch-type annular fluorescent lamp lighting fixture, the position of the lamp support spring is set on a line that passes through the center of the fixture body and is substantially orthogonal to the line connecting the catch socket and the fixture body center. Even if the lamp holder of the lamp support spring is pushed out by attaching an annular fluorescent lamp with a large outer casing, the reaction force is directed toward the center of the fixture body, and the component force in the direction of pulling out the feeding pin of the annular fluorescent lamp from the catch socket is Since it hardly occurs, there is an effect that the feeding pin of the annular fluorescent lamp can be prevented from being pulled out from the catch socket.

  Next, embodiments of the present invention will be described with reference to the drawings. 1A and 1B are schematic external views of a catch-type annular fluorescent lamp lighting apparatus according to an embodiment of the present invention, where FIG. 1A is a side view, FIG. 1B is a bottom view, and FIG. 1C is an enlarged side view of a lamp support spring. FIG.

  A catch socket 11 and two lamp support springs 12 (lamp holders) are provided in a portion of the fixture main body 2 in the catch-type annular fluorescent lamp lighting 1 that is close to the annular fluorescent lamp 20.

  The catch socket 11 is provided with a pin hole engageable in a direction parallel to the power supply pin 21 of the lamp cap 22 of the annular fluorescent lamp 20 and the annular fluorescent lamp mounting surface, and the power supply pin 21 is inserted into the pin hole. Thus, power is supplied to the power supply pin 21 and the lamp cap 22 is fixed at that position.

  The two lamp support springs 12 are arranged on both sides at equal distances on a line passing through the center point of the instrument body 2 and perpendicular to the line connecting the center point and the catch socket 11, and hold the annular fluorescent lamp 20 at that position. To do.

  The lamp support spring 12 has a base portion 12a fixed to the fixture body 2 and a lamp holding portion 12b that is connected to the base portion 12a and opens toward the center of the fixture body 2 and has a semicircular cross section. The portion 12a presses the held annular fluorescent lamp 20 toward the center of the fixture body 2 by the elasticity of the lamp support spring 12, and prevents the annular fluorescent lamp 20 from falling off. Here, the annular fluorescent lamp 20 is described as being pressed and held from the outside. However, the lamp support spring 12 has two lamp holding portions 12b facing each other and sandwiches the annular fluorescent lamp 20 from the inside and the outside. It may be.

  In the case of the conventional catch-type annular fluorescent lamp luminaire 6 described with reference to FIG. 2, the lamp support spring 62 is positioned at 0 ° from the center of the luminaire to the fluorescent lamp catch socket as described above. Then, the angle β in FIG. 2 was generally 120 ° to 150 °. However, in the catch-type annular fluorescent lamp luminaire 1 according to the present embodiment, the angle α in FIG. Yes.

  As described above, in the case of the conventional catch-type annular fluorescent lamp lighting device 6, the pressing force of the lamp support spring 62 against the annular fluorescent lamp 70 has a component force toward the lamp cap 72. As the outer dimension of the lamp increases, the pressing force also increases, and accordingly, the component force x that presses the annular fluorescent lamp 70 in the direction of the lamp cap 72 increases, and the power feeding pin 71 may come out of the pin hole of the catch socket 61. .

  In the annular fluorescent lamp 20 of the present embodiment, when the angle α in FIG. 1 is 90 °, the component force x for pressing the annular fluorescent lamp 20 with the pressing force F against the annular fluorescent lamp 20 in the direction of the lamp cap 22 is zero. Even when the diameter of the annular fluorescent lamp 20 increases or decreases, the pressing force F against the annular fluorescent lamp 20 changes, but the component force x remains zero. Strictly speaking, the direction in which the pressing force is applied changes due to the change in the inclination of the portion of the annular fluorescent lamp 20 in contact with the lamp holding portion 62b, and the component force x is generated. No power to pull out from 11.

  The angle α is preferably 90 ° ± 1 °, but even if it is 90 ° ± 10 °, the force in the direction of pulling out the power supply pin is not applied if it is negative, and the force in the direction of pulling out the power supply pin is positive even if it is positive. 12, which is 20% or less of the pressing force F applied to the annular fluorescent lamp 20 from 12, it is not a force to displace the power feeding pin 21 from the catch socket 11.

  Up to this point, the case where the number of the annular fluorescent lamps 20 is one has been described. However, even if the two annular fluorescent lamps 20 having different diameters are combined, A lamp support spring 12 may be provided.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic external view of a catch-type annular fluorescent lamp lighting apparatus according to an embodiment of the present invention, where FIG. . It is a typical external view of the conventional lighting equipment for catch type annular fluorescent lamps, (a) is a side view, (b) is a bottom view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,6 Catch-type annular fluorescent lamp lighting fixture 2,7 Appliance main body 11,61 Catch socket 12,62 Lamp support spring 12a, 62a Base portion 12b, 62b Lamp holding portion 20,70 Annular fluorescent lamp 21,71 Feed pin 22, 72 Lamp cap

Claims (4)

A catch socket provided on a side of the fixture body of the lighting fixture that holds the annular fluorescent lamp that faces the inner diameter side of the annular fluorescent lamp, and two lamp support springs that hold the annular fluorescent lamp,
Each of the lamp support springs has a lamp holding portion and a base portion connected to the lamp holding portion and fixed to the fixture body, and the lamp holding portion of the annular fluorescent lamp held by the fixture body. Having a semicircular cross-sectional shape aligned with a side surface, the base has elasticity, and the lamp holding portion holds the lamp holding portion so as to press the side surface of the annular fluorescent lamp;
The lamp holding portion is provided on a line passing through the center point intersecting a line connecting the center point of the appliance main body and the center of the catch socket within an angle of a predetermined range centering on 90 °. A lighting apparatus for an annular fluorescent lamp characterized by the above. The lighting apparatus for the annular fluorescent lamp according to claim 1,
The annular fluorescent lamp illuminator, wherein an angle in a predetermined range centering on 90 ° is 90 ° ± 10 °. The lighting apparatus for the annular fluorescent lamp according to claim 1,
The annular fluorescent lamp illuminator, wherein an angle in a predetermined range centered on 90 ° is desirably 90 ° ± 1 °. The annular fluorescent lamp lighting device according to claim 1, wherein:
The annular fluorescent lamp lighting fixture is an annular fluorescent lamp lighting fixture to which two types of annular fluorescent lamps having different circle diameters can be attached,
The lighting fixture for annular fluorescent lamps, wherein the catch socket and the lamp support spring are provided corresponding to the respective annular fluorescent lamps.

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