JPH046145Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a socket for holding, for example, a U-shaped fluorescent lamp.

[Prior art]

Recently, a U-shaped fluorescent lamp 1 as shown in FIG. 7 has been attracting attention as a light source for general illumination. This fluorescent lamp 1 has both ends 2, 2 adjacent to each other and located in the same direction.
Both end portions 2, 2 are integrally covered with a common base 3, and this base 3 is removably held in a socket 4 attached to the lighting equipment side.

As shown in FIG. 7, the conventional socket 4 has a recess 5 into which the cap 3 is inserted.
Plate springs 7, 7, which are elastically hooked on engaging protrusions 6, 6 protruding from both ends of the base 3, are incorporated in both ends of the base 3.

Therefore, in the conventional socket 4, when the cap 3 is inserted into the recess 5, the leaf springs 7, 7 engage with the protrusions 6, 6.
As a result, the cap 3 is held in the recess 5 without falling out.

[Problem that the invention attempts to solve]

However, with this conventional socket 4, when removing the fluorescent lamp 1, the fluorescent lamp 1 must be pulled out against the biasing force of the leaf springs 7, 7 within the cramped lighting fixture. For this reason, the leaf springs 7, 7
If the biasing force is too strong, when the base 3 is removed from the recess 5, the fluorescent lamp 1 may be overpowered and collide with the inner surface of the lighting fixture, making the work of attaching and detaching the fluorescent lamp 1 troublesome. Of course, there are problems such as the expensive fluorescent lamp 1 being easily damaged.

[Means for solving problems]

Therefore, in the present invention, the socket body that holds the cap of the fluorescent lamp is divided into a pair of holding members that sandwich the cap, and one end of these holding members is rotatably connected via a hinge. , the other ends are removably engaged with each other via an engaging means, and the opposing surfaces of these holding members are in close contact with the outer circumferential surface of the cap when the holding members are engaged with each other, so that the cap is It is characterized in that a clamping surface for clamping is formed, and a flange wall is formed continuously from the clamping surface to abut on the end surface of the cap on the arc tube side and the end surface on the opposite side from the arc tube, respectively.

[Effect]

According to this configuration, if the holding members are disengaged from each other and rotated in a direction away from each other, the cap is released from the clamp and at the same time, the cap is exposed to the outside. There is no need to forcefully pull out the fluorescent lamp in the direction of the lamp axis as in the conventional case, and it can be easily taken out in the direction intersecting the lamp axis.

Therefore, especially when this socket is incorporated into a lighting fixture, it eliminates the problem of the curved part of the fluorescent lamp on the opposite side of the base colliding with the lighting fixture when attaching or removing the fluorescent lamp. This can prevent damage to the fluorescent lamp. At the same time, the clearance between the curved portion of the fluorescent lamp and the inner surface of the lighting fixture can be made as small as possible, and the lighting fixture can also be made smaller and lighter.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 6.

Reference numeral 11 in FIG. 6 is a ceiling-mounted lighting fixture, and a single-capped fluorescent lamp 12 is accommodated inside this lighting fixture 11. The fluorescent lamp 12 of this embodiment includes an arc tube 1 bent into a U shape.
3, the arc tube 13 has both ends 14, 14 having electrodes (not shown) located adjacent to each other in the same direction, and these end parts 14, 1
A U-shaped curved portion 15 is provided at the end opposite to 4. Then, both ends 14, 1 of the arc tube 13
4 is covered with a common base 16 extending between these two end portions 14, 14, and four base pins 17 connected to the electrodes are protruded from the tip surface of this base 16. .

Note that the outer peripheral surface of the cap 16 has the above-mentioned both end portions 1.
Projections 18 for preventing slippage are provided at two locations spaced apart from each other in the direction in which the 4 and 14 are arranged side by side.

Incidentally, such a fluorescent lamp 12 is held horizontally via a socket 20 according to the present invention, and details of this socket 20 will be explained below with reference to FIGS. 2 to 5.

That is, the socket 20 has a socket body 21 made of thermoplastic synthetic resin that holds the base 16,
This socket body 21 is divided into a pair of holding members 22 and 23 which hold the base 16 in a direction perpendicular to the lamp axis O ₁ -O ₁ of the fluorescent lamp 12 . The holding members 22 and 23 are rotatably connected to each other via a hinge 24 at one end side along the direction in which both ends 14 and 14 of the fluorescent lamp 12 are arranged side by side. At the other end on the opposite side, there is an elastically deformable engaging claw part 25 as an engaging means for holding the holding members 22 and 23 in abutting state, and this engaging claw part 25 is releasably engaged. A hook receiving part 26 is provided. Fitting recesses 27 into which the bases 16 fit approximately half each are formed on the mutually opposing surfaces of the holding members 22 and 23.
When 2 and 23 are brought into contact with each other, they face each other and enclose the cap 16, and the bottom surface of the recess 27 is in close contact with the outer peripheral surface 16a of the cap 16, forming a clamping surface 28 that sandwiches the cap 16. I am doing it.

Note that the fitting recess 27 of one of the holding members 22 has a pocket portion 2 for accommodating the protrusion 18 of the base 16.
9 is formed.

One end surface of the fitting recess 27 is connected to the clamping surface 28.
Continuously, the tip surface 1 of the cap 16 on the cap pin 17 side
6b, and this flange wall 30 is provided with protrusions 31 that protrude outward and overlap each other when the holding members 22 and 23 are brought into contact with each other. There is. A pair of grooves 32 are formed on the mating surface of the protrusion 31 at positions facing the cap pins 17, and a power supply fitting 33 into which the cap pins 17 fit is installed in the grooves 32.

Note that this power supply fitting 33 is connected to a lighting circuit via a lead wire 34.

The other end surface of the fitting recess 27 constitutes the other flange wall 35 that is continuous with the clamping surface 28 and comes into contact with the end surface 16c of the cap 16 on the arc tube 13 side. An escape recess 36 for allowing the arc tube 13 to escape is formed at the tip edge.

As shown in FIG.
The holding member 23 is fastened to the lower surface of the holding member 7 by a bolt 38, so that the other holding member 23 is on the movable side and rotates in the vertical direction about the hinge 24 as a fulcrum.

In such a configuration, in order to attach the fluorescent lamp 12 to the socket main body 21, first, the engagement between the engaging claw portion 25 and the claw receiving portion 26 is released, and the movable holding member 23 is rotated downward. The fitting recess 27 of the holding member 22 on the fixed side is opened downward. Then, the cap 14 is inserted into the fitting recess 27 from below, and the two cap pins 17 are fitted into the power supply fitting 33. In this state, if the movable holding member 23 is rotated upward and the engaging claw portion 25 is hooked on the claw receiving portion 26, the remaining two cap pins 17 are fitted into the power supply fitting 33, and at the same time, The outer peripheral surface 16a of the cap 16 is held by the clamping surfaces 27 over its entire circumference, and the flange walls 30 and 35 abut against both end surfaces 16b and 16c of the cap 16. This electrically and mechanically connects the base 16 and the socket 20.

On the other hand, in order to remove the fluorescent lamp 12 from the socket body 21, disengage the engagement claw part 25 and the claw receiving part 26, and move the movable holding member 23 downward, contrary to the above-mentioned installation process. Rotate. Then, the lower half of the cap 16 that had been covered by the holding member 23 is exposed downward, and the grip on the outer circumferential surface 16a of the cap 16 is released, so that the cap 16 is connected to the lamp axis O ₁ -O _{1 .} It can be taken out as it is in the downward direction where it intersects.

Therefore, according to one embodiment of the present invention, by rotating the holding member 23, the base 1 is
6 is released, there is no need to forcibly pull out the fluorescent lamp 12 as in the past.
It can be easily taken out below the socket 20.

Therefore, it is possible to eliminate the problem of the curved portion 15 on the opposite side of the base 16 colliding with the inner surface of the lighting fixture 11 when the fluorescent lamp 12 is attached or detached, thereby preventing damage to the expensive fluorescent lamp 12. It can be prevented.

In addition, the fluorescent lamp 12 can be attached and detached using the lamp shaft O ₁
-O ₁ , the clearance L between the curved portion 15 of the fluorescent lamp 12 and the inner surface of the lighting fixture 11 can be made as small as possible, which makes the lighting fixture 11 smaller and lighter. It becomes possible to

In addition, since the outer peripheral surface 16a of the cap 16 is clamped over its entire circumference, and its movement in the direction of the lamp axis O ₁ -O ₁ is restricted by the flange walls 30 and 35, the cap 16 may not wobble. It can be held firmly without any problems.

That is, in the conventional socket 4 described above, a space is provided between the cap 3 and the recess 5 of the socket 4 to facilitate insertion and removal of the cap 3.
The fluorescent lamp 1 sometimes swings in a direction intersecting the lamp axis, and therefore it is necessary to supplementally support the end of the fluorescent lamp 1 on the opposite side from the base 3 with a lamp holder.

However, according to the above configuration, since the base 16 is firmly held, the lamp holder supporting the curved part 15 can be omitted, and therefore, the shadow of the lamp holder does not appear on the light emitting part, and the lamp is not lit. This has the advantage of improving the appearance of the time.

Note that the fluorescent lamp according to the present invention is not limited to a U-shape; for example, the luminous tube may be further bent into a U-shape between both ends and the bent portion in a direction intersecting the lamp axis. , it may have a shape in which U-shaped curved portions are provided at three locations between both ends.

[Effect of idea]

According to the present invention described in detail above, since the fluorescent lamp can be easily taken out in the direction crossing the lamp axis direction, when this socket is incorporated into a lighting equipment and used, when the fluorescent lamp is attached or detached, This eliminates the problem that occurs when the curved portion on the opposite side of the cap collides with the lighting equipment, and prevents damage to the fluorescent lamp. Further, the clearance between the curved portion of the fluorescent lamp and the lighting fixture can be made as small as possible, which has the advantage that the lighting fixture can be made smaller and lighter.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is an exploded perspective view of the socket, FIG. 2 is a sectional view showing the state in which the base is inserted, FIG. 3 is a front view of the socket, and FIG. 4 is a front view of the socket. The plan view of the socket, FIG. 5, is indicated by V- in FIG.
FIG. 6 is a cross-sectional view showing the outline of the lighting fixture, and FIG. 7 is an exploded perspective view of a conventional socket. 12... Fluorescent lamp, 13... Arc tube, 14
... Both ends, 15 ... Curved part, 16 ... Base, 21
... Socket body, 22, 23 ... Holding member, 2
4... Hinge, 25, 26... Engaging means (engaging claw, claw receiver), 27... Clamping surface, 30, 35...
...flange wall.

Claims (1)

[Claims for Utility Model Registration] An arc tube having a U-shaped curved portion at at least one location between the two ends, and the two ends of the arc tube are located adjacent to each other in the same direction; and this arc tube. A socket for a single-cap type fluorescent lamp consisting of a cap that integrally covers both ends of the socket, the socket body that holds the cap being divided into a pair of holding members that sandwich the cap; One end of the member is rotatably connected via a hinge, while the other end is removably engaged with each other via an engaging means, and the holding members are engaged with each other on opposing surfaces of the holding members. At the same time, a clamping surface is formed in close contact with the outer circumferential surface of the cap to clamp the cap, and a clamping surface is continuously formed on the end surface of the cap on the arc tube side and the end surface on the opposite side from the arc tube. A single-capped fluorescent lamp socket characterized by having flange walls that abut each other.