JP4600135B2 - lighting equipment - Google Patents

Description

  The present invention relates to a lighting fixture provided with a single-piece lamp in a substantially horizontal arrangement.

  Conventional lighting fixtures of this type have been developed for the purpose of compact and high output. Depending on the required light output, the number of lamp bulbs is different from two, four, six, and eight. Although used, for example, four lamp pins provided on the lamp base are all arranged on the same circumference at the center of the base (see Patent Document 1).

  On the other hand, in the one-piece fluorescent lamp that has been developed with the aim of further increasing the output recently, the single-piece fluorescent lamp 50 has a straight line 53 passing through the lamp shaft 54 that is the center of the surface of the lamp base 51 as shown in FIG. Four lamp pins 52 are provided approximately symmetrically with respect to the lamp shaft 54 along the point. The straight line 53 is a central axis of the base in a direction perpendicular to the lamp shaft 54. 55 is a lamp bulb, 56 is a socket engaging part.

  The lamp socket 60 to which the one-piece fluorescent lamp 50 is attached has an insertion hole 61 for inserting the lamp pin 52 of the single-piece fluorescent lamp 50 as shown in FIG. It has the pin receiving part 62 which the lamp pin 52 contacts by rotating in a direction. Reference numeral 63 denotes a locking portion to which the socket engaging portion 56 is engaged by the rotation of the single-piece fluorescent lamp 50. When the lamp pin 52 of the single-piece fluorescent lamp 50 is inserted into the insertion hole 61 and rotated, the socket engaging portion 56 engages with the locking portion 63, and the lamp pin 52 is temporarily not contacted with the pin receiving portion 62 at the initial stage. There is a state, and when the one-piece fluorescent lamp 50 is further rotated, the lamp pin 52 comes into contact with the pin receiving portion 62.

The single-piece fluorescent lamp 50 has an amalgam portion which is a mercury vapor supply source.
JP 2003-272409 A

  In the conventional example, since the four lamp pins are arranged on substantially the same circumference, this single-piece fluorescent lamp is relatively small and light even if it is a luminaire provided with the single-piece fluorescent lamp in a substantially horizontal arrangement. In combination with the above, it is easy to make the contact of the four lamp pins relatively stable and reliable, and a highly reliable lighting apparatus can be obtained.

  On the other hand, when the one-piece fluorescent lamp 50 shown in FIG. 5 is attached to the lamp socket 60, the straight line 53 connecting the lamp pins 52 is temporarily attached to the lamp socket 62 and properly attached as shown in FIG. When the lamp is in a substantially horizontal state, the lamp pin 52 and the pin receiving portion 62 are not in contact with each other in the temporary holding state in the lamp mounting process. As the lamp weight increases, the lamp installation state as described above increases the inclination of the lamp in the lamp installation state, and the inclination causes the lamp pin 52 and the lamp pin 52 as shown in FIG. There was a possibility that loose contact, which is incomplete contact, occurred in the pin receiving portion 62, causing overheating and ignition.

  Accordingly, an object of the present invention is to provide a lighting fixture that can prevent the occurrence of loose contact.

In the lighting fixture according to the present invention, the fixture main body is a ceiling-embedded type, and a ceiling-like reflecting mirror is supported by the fixture main body to form a lamp insertion hole on the side surface. The lamp socket is mounted on the lamp body, which is held by the instrument main body outside the reflecting mirror and is horizontally inserted into the lamp inserting hole from the reflecting mirror so as to face the lamp inserting hole. The lamp socket is Due to the fact that mounting the single capped lamp having a socket engaging unit which has a plurality of lamp pins in point symmetry to the rotating center substantially along a straight line passing through the rotation center of the surface of the lamp base .
The lamp socket has a plurality of insertion holes into which the plurality of lamp pins are inserted and the lamp pins are formed to be rotatable,
By rotating the one-piece lamp in one direction with the plurality of lamp pins being inserted, the one-piece lamp has a pin receiving portion in contact with the lamp pin in the insertion hole, and the lamp pin is moved by the rotation of the one-piece lamp. A locking portion that engages with the socket engaging portion at a position that does not contact the pin receiving portion and a position that contacts the pin receiving portion;
The plurality of insertion holes are arranged so that the straight line of the one-piece lamp in the inserted state is in a substantially vertical direction.

  In the above-described configuration, the one-piece lamp has an amalgam portion arranged in the direction perpendicular to the rotation center axis direction of the one-piece lamp in a direction perpendicular to the arrangement direction of the lamp pins.

  According to the lighting apparatus of the present invention, in the lamp socket mounted state, the plurality of insertion holes are arranged so that the straight line of the single-piece lamp is in a substantially vertical direction. Even when the lamp is tilted, the loose contact can be prevented without the lamp pin coming into contact with the pin receiving portion.

  Further, since the position of the amalgam portion is positioned horizontally with the lamp axis, a constant light output can be obtained with little change of the amalgam temperature.

  A first embodiment of the present invention will be described with reference to FIGS. That is, in this lighting fixture, the fixture body 3 is embedded in the embedded hole 2 of the ceiling 1. The instrument body 3 is composed of a column (not shown), a frame 5 and a main body top plate 6, and is locked to the back surface of the ceiling 1 by a fixture (not shown) provided on the column. A frame 5 that is connected to the support hole and supports the reflecting mirror (plate) 4 having a cylindrical shape is inserted into the embedded hole 2, and the frame 5 is locked to the edge of the embedded hole 2. A lamp socket 7 facing the side surface of the reflecting mirror 4 is attached to the lower surface of the main body top plate 6 attached to the upper end of the column of the fixture main body 3, and a lighting device mounting plate 8 is further attached to the main body top plate 6. A lighting device 9 and a terminal block 10 are attached to the main body. A lamp insertion hole 11 is formed at a position facing the lamp socket 7 of the reflecting mirror 4, and a one-piece lamp, for example, a one-piece fluorescent lamp 12 is disposed in the reflecting mirror 4 through the lamp insertion hole 11, and the lamp cap 13 is connected to the lamp socket. 7 is attached.

  The single-piece fluorescent lamp 12 has the same configuration as that shown in FIG. 5, has a lamp shaft 14 at the center of the surface of the lamp base 13, and has an inward hook-shaped socket engagement with the peripheral part of the surface of the lamp base 13. A plurality of portions 15 are provided so that four lamp pins 16 are provided symmetrically with respect to the lamp shaft 14 along a straight line 17 passing through the lamp shaft 14 between the socket engaging portion 15 and the lamp shaft 14. A straight line 17 is a base axis of the base passing through the lamp shaft 14 of the lamp base 13 in a direction orthogonal to the axial direction of the lamp shaft 14.

  The lamp socket 7 has a concave portion 20 that fits the lamp shaft 14 at the center, a locking portion 21 that engages with the socket engaging portion 15 is formed at the peripheral portion, and an insertion hole 22 into which the lamp pin 16 is inserted is provided. It is formed corresponding to the lamp pin 16. The insertion holes 22 are short long holes near the lamp shaft 14 and long long holes far from the lamp shaft 14, and each form an arc centered on the recess 20. In the state in which the lamp socket 7 is attached to the fixture body 3, the four insertion holes 22 are arranged so that the straight line 17 of the single-piece fluorescent lamp 12 is in a substantially vertical direction. Further, by arranging a pin receiving portion 23 in the insertion hole 22 and rotating the single-piece fluorescent lamp 12 in one direction, the lamp pin 16 comes into contact with the pin receiving section 23 and power can be supplied to the single-piece fluorescent lamp 12. Become.

  Further, when the one-piece fluorescent lamp 12 is rotated with the lamp pin 16 inserted into the insertion hole 22, the socket engaging portion 15 engages with the locking portion 21, and the lamp socket 7 and the lamp base 13 are connected. In the initial stage of engagement, a temporary holding state in which the lamp pin 16 is not yet in contact with the pin receiving portion 23 is formed.

  When the single-piece fluorescent lamp 12 is temporarily held, the lamp pin 16 is also a pin of the lamp socket 7 even when the single-piece fluorescent lamp 12 is tilted vertically downward with the lamp socket 7 as a fulcrum due to its own weight. Occurrence of loose contact can be prevented without contacting the receiving portion 23.

  A second embodiment of the present invention will be described with reference to FIG. In the first embodiment, the amalgam portion 25 is disposed in the lamp base 13 of the single-piece fluorescent lamp 12 at a position approximately 90 degrees in terms of the direction in which the lamp pins 16 are arranged, that is, in a direction perpendicular to the straight line 17. It is a thing.

  In a state where the single-piece fluorescent lamp 12 is installed in the lamp socket 7, the position of the amalgam portion 25 provided in the lamp base 13 is positioned substantially horizontally with the lamp shaft 14. The one-piece fluorescent lamp 12 and the lamp socket 7 can be mounted only in a state of being rotated 180 degrees around the lamp shaft 14, and the amalgam portion 25 is positioned on the left and right with respect to the straight line 17. For this reason, even if the user does not confirm the position of the amalgam portion 25, the position of the amalgam portion 25 in the lamp base 13 is positioned horizontally with the lamp shaft 14. Therefore, there is little change in the amalgam temperature and there is no output variation. Even when a plurality of fixtures and lamps are attached, a constant light output can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial perspective view showing a single base fluorescent lamp and a lamp socket according to a first embodiment of the present invention. It is a schematic sectional drawing of a lighting fixture. It is a front view explaining the state by which the one-piece lamp | ramp was temporarily hold | maintained at the lamp socket. A 2nd embodiment is shown, (a) is a partial fracture side view of a single cap lamp, and (b) is a partial fracture front view showing the surface of the lamp cap. A prior art example is shown, (a) is a side view of a single cap lamp, and (b) is a front view showing the surface of the lamp cap. (A) is a partial enlarged front view of a conventional one-piece lamp in a normal mounting state, and (b) is a partial enlarged surface view in a state where the one-piece lamp is tilted due to the lamp's own weight in the temporary holding state of the lamp.

Explanation of symbols

7 Lamp socket
12 Single base fluorescent lamp 13 Lamp base 14 Lamp shaft
15 Engagement part
16 Lamp pin
17 Straight 22 Insertion hole
23 Pin receiving part
25 Amalgam Club

Claims (2)

A ceiling-embedded instrument body, a ceiling-like cylindrical reflector that is supported by the instrument body and has a lamp insertion hole formed on its side surface, and is held by the instrument body outside the reflector to the lamp insertion hole And a lamp socket for mounting a lamp that is horizontally inserted into the lamp insertion hole from the inside of the reflecting mirror, and the lamp socket is arranged along the straight line passing through the rotation center of the surface of the lamp base. in luminaire mount the single capped lamp having a socket engaging unit which has a plurality of lamp pins in point symmetry to the dynamic center,
The lamp socket has a plurality of insertion holes into which the plurality of lamp pins are inserted and the lamp pins are formed to be rotatable,
By rotating the one-piece lamp in one direction with the plurality of lamp pins being inserted, the one-piece lamp has a pin receiving portion in contact with the lamp pin in the insertion hole, and the lamp pin is moved by the rotation of the one-piece lamp. A locking portion that engages with the socket engaging portion at a position that does not contact the pin receiving portion and a position that contacts the pin receiving portion;
The plurality of insertion holes are arranged such that the straight line of the one-piece lamp in the inserted state is in a substantially vertical direction.   2. The illumination according to claim 1, wherein the one-piece lamp has an amalgam portion disposed in a direction perpendicular to a rotation center axis direction of the one-piece lamp in a direction perpendicular to the arrangement direction of the lamp pins. Instruments.

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