JPH0455372Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a sliding type lighting fixture that allows the lamp to be moved to an optimal irradiation position on a hand surface such as a desk top.

[Conventional technology]

For example, some study desks equipped with book stands have lighting fixtures attached to the shelves of the stands to illuminate the desk top from above. Among such lighting equipment, one in which the lighting position can be adjusted by a sliding operation has been proposed by the present applicant and has already been filed as U.S. Pat. No. 62-157693.

This prior art is illustrated in FIGS. 6-8. That is, 1 in FIG. 8 is a shelf of a book stand, and a control box 2 having a push switch, an outlet, etc. is attached to the bottom surface of this shelf, and a pair of hollow holes connected to the control box 2 are attached to the shelf 1. A pillar 3 is erected. An arm storage part 4 is attached to the upper end of the support column 3, and a slide arm 5 is stored in the storage part 4 so as to be freely drawn out along the front-rear direction. A connecting body 7 having a handle portion 6 is attached to the front end of the slide arm 5, and a lamp 8 including a lamp (not shown) is connected and supported on this connecting body 7. Therefore, in this lighting fixture, by holding the handle portion 6 and pushing and pulling it back and forth, the slide arm 5 can be moved back and forth with respect to the arm storage portion 4, and the position of the lamp 8 can be optimally adjusted.

In this lighting fixture, a cord 10 connected to the lamp 8 via a connector 9 is routed inside the support 3 through the slide arm 5 and the arm housing 4. Furthermore, a slit 11 is provided at the rear end of the bottom plate 5a of the slide arm 5.
is formed, and code 1 is inserted into this slit 11.
0 is locked and inserted, the code 10
is operated together with the slide arm 5 and allows the movement of the slide arm 5.
It is housed in the space 12 between the Note that 5b in FIGS. 6 and 7 is a sliding leg formed on the bottom plate 5a to secure the above-mentioned space 12.

[The problem that the idea aims to solve]

However, in this prior art, the cord portion 10a is simply stored in the space 12 formed between the bottom plate 4a of the arm storage part 4 and the bottom plate 5a of the slide arm 5.
As the slide arm 5 is pushed and pulled, the cord portion 10a can be bent freely without any restriction. Therefore, code part 10
Depending on the way a is bent, there is a problem in that the cord is bent excessively and its deterioration is accelerated.

One possible solution to this problem is to use a so-called curled cord, which is made by curling the cord in a spiral shape to give it elasticity, but this cord is expensive, so we will not discuss it above. The solution was inappropriate for practical use.

An object of the present invention is to provide a sliding lighting fixture capable of inexpensively improving the bending durability of the cord.

[Means to solve the problem]

In order to achieve the above object, the sliding lighting device of the present invention is provided with a wide cord insertion opening in the width direction of the arm at the rear end of the sliding arm, and an arm storage that allows the sliding arm to be freely pulled out and stored. a cord stopper is provided at the rear end of the section and the front end of the slide arm, and
The slide arm is provided with a regulating protrusion for regulating the bending direction of the cord near the cord loose insertion opening, and an engaging protrusion is provided between the regulating protrusion and the cord stopper of the slide arm. The cord is provided closer to one side wall of the slide arm than the regulating convex portion, and the cord is fixed to both the cord stoppers, respectively, and the cord portion between these cord stoppers is connected to the one side wall of the slide arm and the above cord. The cord is passed between the engagement convex portion and the regulating convex portion and the other side wall of the slide arm, and is loosely inserted into the cord insertion opening.

[Effect]

In this invention, when the slide arm is pulled out,
Accordingly, the cord that had been bent inside the slide arm stretches, allowing the slide arm to be pulled out. At this time, the regulating convex part of the slide arm comes into contact with the middle of the cord part located between the engaging convex part of the slide arm and the cord stop part of the arm storage part, and this cord part is straightened by the drawer. In addition to preventing the cord from bending in the middle, the cord is also restricted from bending in the middle. The engaging convex portion pushes the cord portion rearward when the pulled out slide arm is pushed in and stored in the arm storage portion. Then, the cord portion, whose intermediate portion has been bent in advance by the regulating convex portion, bends greatly within the slide arm away from the regulating convex portion, and the cord is therefore deformed so as to be compressed. Further, the cord loose insertion opening provided at the rear end of the slide arm absorbs the displacement of the cord portion along the arm width direction due to pushing and pulling of the slide arm, thereby making it possible to extend and contract the cord as described above. The above-mentioned extension and contraction of the cord is caused by the action of each cord stopper, cord loose insertion port, regulating protrusion, and engaging protrusion, which allows the cord to move inside the slide arm each time the slide arm is slid. It is reproduced in

〔Example〕

An embodiment of the present invention will now be described with reference to Figs. 1 to 5.

Reference numeral 21 in FIG. 5 is a book stand installed on the study desk, and a stand-shaped instrument main body 23 is attached to the center of the shelf 22 below the book stand. A control box 24 is attached. The fixture body 23 and the control box 24 form a lighting fixture for desk lighting, and the control box 2
4 has a built-in stabilizer (not shown), and is also provided with a push switch 25, an outlet 26, and the like.

As shown in FIG.
, an arm storage section 28 provided at the upper end of this support column 27 , a slide arm 29 housed in this storage section 28 so as to be freely drawn out, and a lamp 31 connected to the front end of this arm 29 via a connecting body 30 . and,
It is formed from a two-core vinyl cord 32 that electrically connects the lamp 31 and the control box 24.
Note that the arrow direction in FIG. 4 indicates the direction in which the slide arm 29 moves.

The support column 27 is provided by screwing its lower end to the shelf board 22. As shown in FIG. 1, the arm storage portion 28 is formed from a storage portion base 28a and a storage portion cover 28b connected to the upper surface of the storage portion base 28a with screws 33. The front end of this arm storage portion 28 is open. Further, at the rear end of the arm storage section 28, a cord stopper 34 and a cord holding piece 35 are provided at approximately the center in the width direction of the storage section base 28a.
are integrally provided in a protruding manner, and a communication hole 36 that communicates with the inside of the support column 27 is formed. In this embodiment, the cord stopper 34 is formed by a pair of clamping pieces, and its upper end is closed by the inner surface of the housing cover 28b to prevent the cord 32 from coming off upward. .

As shown in FIG. 1, the slide arm 29 includes an arm base 37 made of synthetic resin and having a substantially rectangular box shape with an open upper surface, and a screw 39 that is screwed into a screw receiving boss 38 provided on the arm base 37. It is formed from an arm lid 40 that is attached through the arm lid 40. The slide arm 29 is provided with a cord stopper 41 consisting of, for example, a pair of clamping pieces at approximately the center of its front end in the width direction, and is provided with a cord loose insertion opening 42 at its rear end. The cord loose insertion opening 42 is formed wide along the width direction of the slide arm 29, and in the case of this embodiment is formed as a notch with an open top surface. Let the whole thing open,
The entire open portion may be used as a cord loose insertion port. The upper end of the cord stopper 41 is closed by the inner surface of the arm lid 40 to prevent the cord 32 from coming off upward.

The arm base 37 is provided with a regulating protrusion 43 for regulating the bending direction of the cord 32 near the cord loose insertion opening 42 thereof. In this embodiment, the convex portion 43 is formed by a diagonal wall that projects obliquely forward from the rear wall of the arm base 37, but instead of this, it may be formed by a boss provided forwardly from the rear wall. It may be formed with a convex portion.
Note that 44 in FIGS. 1 to 3 is a stopper formed by extending a portion of the rear wall upward. This stopper 44 prevents the slide arm 29 from slipping out from the arm storage section 28 when it is caught on a stopper receiver (not shown) provided on the storage section cover 28b when the slide arm 29 is pulled out.

Furthermore, an engagement protrusion 45 is integrally provided on the arm base 37 and protrudes between the cord stopper part 41 and the regulation protrusion 43. This convex portion 45 is closer to one side wall 37 of the arm base 37 than the regulating convex portion 43.
It is located close to a. In this embodiment, the engaging protrusion 45 is formed by a boss.
Instead of this, it may be a rib, or even integrated with the cord stopper 41 and made into a rib shape as a whole.

Further, a connecting head portion 46 is integrally formed at the front end of the arm base 37, and the connecting body 30 is connected to this. The connecting body 30 is connected to be rotatable in the vertical direction around a pivot 47 (see FIGS. 2 and 3), and can be fixed at any rotation angle by tightening the brake knob 48. However, this rotating structure can be omitted. The connecting body 30 is connected to the handle portion 30.
It has a. Therefore, the handle portion 30a
By grasping and pushing and pulling the slide arm 29, the slide arm 29 can be moved back and forth via the connecting body 30.

The lamp 31 is formed by attaching a rod-shaped fluorescent lamp 31b, a lamp socket (not shown), a glow lamp, etc. inside a horizontally long shade 31a. A longitudinally central portion of the shade 31a of this lamp 31 is connected to the connecting body 30.

The lamp side cord 49 included in this lamp 31 includes:
As shown in FIGS. 2 and 3, a cord 32 is connected via a connector 50. This code 3
2 passes through the slide arm 29 and connects to the communication hole 3.
6 and is led into the support 27 and wired.

Moreover, the cord 32 is press-fitted and fixed into the pair of cord stoppers 34, 41. Moreover, the cord portion 32 between the cord stoppers 34 and 41
a is an engaging convex portion 45 as shown in FIGS. 1 to 3.
and one side wall 37a of the arm base 37, and between the regulating convex portion 43 and the other side wall 37b of the arm base 37, and the cord insertion opening 42
is wired through. This cord portion 32a is expanded and contracted when the slide arm 29 is moved back and forth, thereby making it possible to adjust the position of the lamp 31.

In other words, when the slide arm 29 is pushed in, as shown in FIG.
2a is a slide arm 2 bent into a substantially S-shape.
It is contained within 9. When the slide arm 29 is pulled forward together with the lamp 31 via the connecting body 30 from this state, the cord portion 32a that has been curved between the cord stopper 34 and the engagement protrusion 45 is stretched. , slide arm 29
Allows sliding movement.

A state in which the slide arm 29 is pulled out to the maximum is shown in FIG. In this state, the cord portion 32a is connected to the cord stopper 34 and the regulating protrusion 43.
Due to the positional relationship between the cord portion 32a and the engaging convex portion 45, the cord portion 32a is wired in contact with them, so that the intermediate portion of the cord portion 32a is pushed by the regulating convex portion 43 and is not directed toward the one side wall 37a of the arm base 37. This prevents the cord from being bent toward the other side wall 37b of the arm base 37 with respect to the straight line B connecting the cord stopper 34 and the engagement protrusion 45.

Further, when the slide arm 29 is pushed in from the state shown in FIG. 3, the engaging convex portion 45 pushes the cord portion 32a backward, and the reaction force causes the cord stopper 34 to push the cord portion 32a forward. become. The acting directions of these forces are not on the same line but are shifted in the width direction of the slide arm 29, and the middle part of the cord portion 32a is bent in advance by the regulating convex portion 43, so that the cord portion 32a is inside the slide arm 29. In this case, it is smoothly curved so that it bulges out greatly toward the other side wall 37b, and is not bent excessively. Moreover, the cord stopper portion 3 of the cord portion 32a at that time
The displacement on the 4th side is absorbed within the cord loose insertion opening 42 of the slide arm 29. For this, code part 3
2 is not freely deformed outside the slide arm 29, and the cord portion 32 is bent into a substantially S-shape and stored within the slide arm 29, as shown in FIG.

The above-mentioned expansion and contraction operation of the cord portion 32a is as follows.
This is reproduced every time the slide arm 29 is slid.

Therefore, as described above, the code portion 32
Since the cord portion 32a is expanded and contracted with good reproducibility and is also expanded and contracted within the slide arm 29, there is no risk that the cord portion 32a will be caught in the sliding portion of the slide arm 29 and the arm storage portion 28. Therefore, it goes without saying that smooth sliding movement of the slide arm 29 can be guaranteed with high reliability. In addition, since the cord portion 32a is not greatly curved and excessively bent as described above, its bending durability can be improved. Moreover, there is no need to use a so-called curl cord for the cord 32, and a commonly used low-cost two-core vinyl cord 32 can be used, so it can be implemented at low cost without increasing the cost of the sliding lighting fixture. can.

Furthermore, in this embodiment, the wiring of the cord portion 32a can be done from above the arm base 37, and the arm cover 40 can also be attached from above, so that assembly is easy.

[Effect of idea]

According to the present invention configured as described above, the cord is fixed to the cord fixing parts provided in the slide arm and the arm storage part, respectively, and the movement of the cord part between these fixing parts is controlled by the code provided in the arm. The regulating protrusion and the engaging protrusion restrict the cord, and the cord loosely inserted at the rear end of the arm allows the cord to be curved greatly as a whole, and this bending deformation can always be reproduced in the same state. The durability of the cord can be improved since there is no bending, and there is no need to adopt an expensive curled cord for this cord, and a commonly used two-core vinyl cord can be used, so it can be implemented at a low cost.

[Brief explanation of the drawing]

1 to 5 show an embodiment of the present invention,
Figure 1 is an exploded perspective view of the main parts, Figure 2 is a plan view showing the cord wiring structure with the slide arm retracted, and Figure 3 is a plan view showing the cord wiring structure with the slide arm pulled out. , Fig. 4 is an overall perspective view, Fig. 5 is a perspective view of the book mounted on a book stand, Figs. 6 to 8 show conventional examples, and Fig. 6 is a partially cutaway bottom view. ,
FIG. 7 is a sectional view taken along the line A--A in FIG. 6, and FIG. 8 is a perspective view of the whole. 27... Support column, 28... Arm storage section, 29...
...Slide arm, 31...Lamp, 32...Cord, 32a...Part of the cord, 34...Cord stop, 37a...One side wall, 37b...Other side wall,
41... Cord stopper, 42... Cord loose insertion slot,
43...Restriction convex portion, 45...Engagement convex portion.

Claims (1)

[Scope of Claim for Utility Model Registration] A slide arm is stored in an arm storage section provided at the upper end of the column so that it can be freely pulled out, and a cord connected to a light fixture attached to the front end of this arm is
In a sliding type lighting fixture in which the wiring is routed through the slide arm and into the support column, the rear end of the slide arm is provided with a wide cord insertion opening in the width direction of the arm, and the front end of the slide arm and the arm storage area are provided. A cord stopper is provided at each rear end of the slide arm, and a regulating protrusion for regulating the bending direction of the cord is provided on the slide arm near the cord loose insertion opening, and the regulating protrusion and the An engaging convex portion is provided between the cord retaining portion of the slide arm and the engaging convex portion closer to one side wall of the slide arm than the regulating convex portion, and the cords are respectively fixed to both of the cord retaining portions, and both cord retainers are provided. Pass the cord between the sections between one side wall of the slide arm and the engaging protrusion, and also pass it between the other side wall of the slide arm and the regulating protrusion and insert it loosely into the cord loose insertion hole. A sliding lighting fixture characterized by being inserted and wired.