JPH0643940Y2 - Lighting equipment for learning desk - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is a lighting device mounted on a shelf and illuminating the desk in a learning desk with a shelf. The present invention relates to a lighting device for front and rear slide type learning desks.

[Conventional technology]

The horizontal lighting fixture fixed under the shelf of the learning desk with shelves illuminates the back of the desk brightly, but the illuminance may be insufficient in front of the desk. Therefore, a front-rear slide type lighting device in which a lighting fixture is attached under the shelf board so that the lighting fixture can be moved back and forth in parallel and the illuminance distribution on the desk can be easily changed is popular because it is convenient for learning. .

The horizontally long lighting fixture in the above-mentioned front-back slide type lighting device is generally supported by a rail under a shelf plate so as to be movable back and forth by a constant stroke, and the forward and backward movement of the lighting fixture is generally performed manually. .

In this lighting device, when one end of a horizontally long lighting fixture is pulled by hand to move the lighting fixture forward, the force for moving the lighting fixture is biased to one end that is pulled by hand, and the other end simultaneously moves forward. It becomes difficult and the luminaire may not move forward smoothly. The same may occur if the luminaire is pushed back by pushing one end by hand.
So, pull any part of the horizontally long lighting fixture by hand,
Alternatively, the lighting device is devised so that it can be moved back and forth smoothly even if it is pressed, and a specific example thereof will be described with reference to FIGS. 9 to 12. The illuminating device shown in the same figure has a horizontally long illuminating device (2) mounted along the lower surface of a shelf board (1) of a learning desk with shelves so as to be movable back and forth by a constant stroke.
Both ends of the shelf plate (1) are fixed by a pair of shelf side plates (3) and (3), and a lighting device (2) is provided on the inner surface of the pair of shelf side plates (3) and (3).
Pair of rail members (4a) that support the front and rear movably
(4b) is fixed with screws. The lighting fixture (2) is a horizontally long box-shaped fixture body (5) in which an incandescent lamp (6) and its reflection shade (7), a straight tube fluorescent lamp (8) and its lighting means (9) are housed. The decorative curtain plate (10) is fixed to the front surface of the instrument body (5). The device body (5) integrally has laterally extending projections (11) (11) on both end surfaces, and the projections (11) (11) are provided on the inner surfaces of the pair of rail members (4a) (4b). The lighting fixture (2) is slidably supported by the rail members (4a) and (4b) in the front row by being slidably fitted in the recessed grooves (12) (12) formed laterally.

Rack gears (13a) and (13b) are formed in the lower rear part of the inner surface of the pair of rail members (4a) and (4b) as means for moving the lighting fixture (2) smoothly back and forth manually.
The following rotating shaft (14) and pinion gears (15a) (15b) are attached to the lighting fixture (2). As shown in FIG. 12, the rotating shaft (14) of the luminaire (2) is rotatably supported by the lower rear part of the luminaire body (5) in parallel with the longitudinal direction of the luminaire body (5). Pinion gears (15a) and (15b) are fixed to both ends of the pinion (5) protruding from both ends. To install the lighting fixture (2), use a pair of pinion gears (15a) (15b) and a pair of rack gears (13a) (1a) of rail members (4a) (4b).
It is performed by meshing with 3b).

Therefore, if the one end of the luminaire (2) directly below the shelf (1), for example, toward the right in FIG. 9 is pulled with one hand, the luminaire (2) will try to move forward with its right end and rotate with this advance. The pinion gear (15b) on the right side of the shaft (14) rolls on the rack gear (13b) of the corresponding rail member (4b) to rotate the rotary shaft (14), and this rotation causes the pinion gear (15a) on the left side to rotate. The left end of the lighting fixture (2) is pushed forward by rotating on the rack gear (13b) of the left rail member (4a). In other words, when one end of the lighting fixture (2) is pulled, the pulling force is transmitted along the rotation axis (14) and pushes out the other end of the lighting fixture (2). Even, it smoothly translates forward. Further, when pushing one end of the forwarded luminaire (2), the luminaire (2) smoothly moves backward in parallel due to the action of the rotating shaft (14).

[Problems to be solved by the device]

The rotating shaft and the rack and pinion mechanism at both ends of the rotating shaft for manually and smoothly moving the oblong lighting fixture back and forth under the shelf of the learning desk have no functional problems, but the number of constituent parts is large, and the lighting There is the inconvenience of making the device complicated and expensive.

Therefore, an object of the present invention is to realize a simplified structure and a low cost of a slide type lighting device before and after it is attached to a shelf of a learning desk with a shelf.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention supports a horizontally long lighting fixture under a shelf board of a learning desk with a shelf so that both ends of the lighting fixture can be moved back and forth by a constant stroke by a pair of opposed rail members fixed to the shelf. In the luminaire, a long shaft body extending parallel to the longitudinal direction of the luminaire and rotatably supported by the luminaire, and approximately 90 ° in the same direction from both ends of the shaft body.
A pair of arm members that are bent and that extend along both end surfaces of the lighting fixture, and a pair of projecting end portions that project outward from the tips of both arm portions are attached, and a pair of shaft members is attached. A vertical groove is formed at a fixed location of the rail member facing each other so that both projecting end portions of the shaft member are vertically slidably fitted.

[Action]

When one end of the lighting fixture is manually advanced under the shelf, the shaft main body of the shaft member rotates with this advance, and both arms move forward with the protruding end part that fits into the vertical groove of the rail member as a fulcrum. The oscillating rotation causes the shaft body to press one end of the luminaire opposite to the one pulled by the hand of the luminaire, and the luminaire smoothly moves forward. When pushing one end of the advanced luminaire by hand to retract it, the shaft member moves in the opposite direction to the forward movement, and the luminaire is smoothly moved backward. As the shaft member that smoothly and parallelly moves such a lighting device back and forth, a single piece having a simple structure in which one rod is bent is used.

〔Example〕

Examples will be described below with reference to FIGS. 1 to 8.

In the lighting device of FIGS. 1 and 2, (20a) and (2a)
0b) is a pair of rail members fixed to the shelf side plates (3) (3) at both lower ends of the shelf plate (1), and (21) is a pair of rail members (20a) (20b) with both ends being forward and backward. A horizontally long luminaire supported by a fixed stroke so that (22) is a luminaire (21).
It is a shaft member made of a single steel bar connected to, and is used as a means for smoothly translating the lighting fixture (21) back and forth as described later. The luminaire (21) is a horizontally elongated box-shaped luminaire body (23) as shown in FIG. 5, in which a light source and its lighting means are housed as in the conventional case. Are given the same reference numerals. The tool body (23) integrally has projections (24) (24) extending laterally on both end surfaces, and the projections (24) (24) are paired with a pair of rail members (20).
The lighting fixture (21) is attached to the underside of the shelf plate so as to be movable back and forth by slidably fitting into the concave grooves (25) and (25) formed laterally on the inner surfaces of a) and (20b).

As shown in FIG. 4, the shaft member (22) is approximately 90 degrees in the same direction from both ends of the long straight shaft body (22a) and the shaft body (22a).
° A pair of bent arms (22b) (22c) and each arm (22b
b) Approximately 9 outwards from the tip of (22c) parallel to the shaft body (22a).
It consists of protruding ends (22d) (22e) bent at 0 °. The shaft member (22) is provided at the rear of the main body (23) of the lighting fixture (21).
They are connected as shown in FIG. That is, for example, the shaft main body (22a) is arranged in parallel on the upper back surface of the device main body (23) and rotatably fixed by the bearing metal fittings (26) (26), and both arm parts (22b) (22c) are fixed. Hang it along both ends of the body (23) so that it can swing back and forth.

The pair of rail members (20a) (20b) have the same shape,
Explaining one of them from FIG. 3, the rail member (20a)
At the lower rear of the inner surface, the protruding end (22
d) The vertical groove (27a) in which the vertical groove (27a) is slidably fitted, and the vertical groove (27
It has a lateral groove (28) extending from the upper end of (a) to the front end of the rail member (20a). The lateral groove (28) is a guide groove for inserting the protruding end portion (22d) of the shaft member (22) into the vertical groove (27a) and is not always necessary. In addition, (29) (2
9) is a wood screw for fixing the rail member (20a) to the shelf side plate (3).

The lighting fixture (21) is attached below the shelf plate (1) as follows. Insert the projections (24) (24) at both ends of the instrument body (23) having the shaft member (22) into the recessed grooves (25) (25) of the pair of rail members (20a) (20b) from the front, The protruding ends (22d) (22e) at both ends of the member (22) are connected to the rail members (20a) (20b).
Insert it into the lateral grooves (28) (28) and push the lighting fixture (21) to the most retracted position. In this final retracted position, the arm members (22b) (22c) of the shaft member (22) are tilted rearward as shown in FIG. 2, and the projecting end portions (22d) (22e) are corresponding rail members (20
a) It drops into the upper part of the vertical groove (27a) (27b) of (20b) and locks. After that, the luminaire (21) moves back and forth between the last retracted position and the most advanced position shown by the chain line in FIG. 6 determined by a special stopper (not shown), and during this time, the shaft member (22).
The protruding ends (22d) (22e) of the rail members (20a) (20b)
It moves up and down in the vertical grooves (27a) (27b).

When the lighting device (21) in the final retracted position is moved forward by pulling one end on the right side of FIG. 1 by hand, the right end of the lighting device (21) is moved forward to move the shaft member (22). By lowering the vertical groove (27b) while the right end protruding end (21e) is locked in the vertical groove (27b) of the right rail member (20b), the shaft body (2
2a) moves forward together with the lighting fixture (21) while rotating. The rotational force of the shaft body (22a) causes the left end protruding end (22d) to press the vertical groove (27a) of the left rail member (20a) rearward, and the reaction force causes the left arm (22b) to move. It swings and rotates forward, and the left end of the shaft body (22a) presses the lighting fixture (21) forward.
Therefore, even if one end of the horizontally long lighting fixture (21) is pulled by hand, the pulling force acts on the other end via the shaft member (22) and the lighting fixture (21) smoothly moves forward. Move in parallel with. When the luminaire (21) reaches the most advanced position, the shaft member (22) is held in a posture in which the arms (22b) (22c) are tilted forward as shown in FIG. (22d) (2
2e) vertically moves the vertical grooves (22a) and (22b) once, and stops at the original upper limit position. If you push the forward lighting fixture (21) by hand,
The shaft member (22) moves in the opposite direction of the forward movement, and the lighting fixture (21)
Move back smoothly.

7 and 8 show an embodiment in which the rail member (20) for movably supporting the lighting fixture (21) back and forth is modified. The rail member (20) shown in this embodiment is formed by extending the guide groove (30) downward from the tip of the lateral groove (28) and extending the vertical groove (27) upward from the lower end of the guide groove (30). It is a thing. In this case, one end of the shaft member (22) has a protruding end (22
d) The vertical groove (2
7) and when the luminaire (21) is moved back and forth, the projecting end (22d) becomes a vertical groove (2d) as shown by the arrow in FIG.
Only 7) moves up and down to regulate swinging rotation of the shaft member (22). Here, the vertical length of the vertical groove (27) is set so that the protruding end portion (22d) of the shaft member (22) is aligned with the vertical groove (27) when the lighting device (21) is in the most retracted position and the most advanced position. If you regulate so that it hits the upper end surface, the upper end surface of the vertical groove (27) will be the lighting fixture (21).
It becomes a stopper that regulates the last retracted position and the most advanced position, eliminating the need for a special stopper.

The present invention is not limited to the above-described embodiment, and for example, the projecting end portions of both ends of the shaft member may be a rotating body such as a roller connected to the tip portion of the arm portion.

[Effect of device]

As in the present invention, the shaft member used for the means for smoothly translating the horizontally long lighting fixtures back and forth under the shelf of the study desk is a simple and inexpensive structure such as a bar steel bending process. Therefore, it is possible to provide the front and rear slide type lighting device for a learning desk, which has a small number of parts and the number of assembling steps, has a simple structure, and can easily reduce the cost.

[Brief description of drawings]

1 is a partial front view including a partial cross section and a partially omitted portion showing an embodiment of the present invention, FIG. 2 is an enlarged cross sectional view taken along the line AA in FIG. 1, and FIG. 3 is FIG. FIG. 4 is a perspective view of a rail member shown in FIG. 4, FIG. 4 is a partially enlarged perspective view of a shaft member in the lighting device of FIG. 1, FIG. 5 is a partial perspective view of a lighting fixture of the lighting device of FIG. 1, and FIG. It is a sectional side view which shows the operation | movement relationship of the rail member and shaft member in FIG. FIGS. 7 and 8 are for explaining another embodiment of the present invention. FIG. 7 is a perspective view of a rail member, and FIG. 8 is a side sectional view showing an operational relationship between the rail member and the shaft member. Is. FIG. 9 is a partial front view including a partially omitted portion of a conventional lighting device for a learning desk, and FIG. 10 is a sectional view taken along the line BB of FIG.
FIG. 11 is an enlarged sectional view taken along the line CC of FIG. 9, and FIG. 12 is a partial perspective view of a lighting fixture in the lighting device of FIG. (1) …… Shelves, (20), (20a), (20b) …… Rail members, (21a) …… Lighting fixtures, (22) …… Shaft members, (22a) …… Shaft body, (22b) ), (22c) ... arm, (22d), (22e) ... protruding end, (27), (27a), (27b) ... vertical groove.

Claims (1)

[Scope of utility model registration request] 1. A pair of rail members fixed to both lower ends of a shelf board in a learning desk with shelves and a horizontally long lighting fixture in which both ends are supported by a pair of rail members so as to be movable back and forth by a constant stroke. And a long shaft body extending parallel to the longitudinal direction of the luminaire and rotatably supported by the luminaire, and bent at approximately 90 ° in the same direction from both ends of the shaft body to both end surfaces of the luminaire. A pair of arm portions is provided, and a pair of projecting end portions projecting outward from the tips of both arm portions is provided with one shaft member, and the pair of rail members are opposed to each other at fixed locations. A lighting device for a learning desk, wherein the projecting ends of both ends of the shaft member have vertical grooves that are slidably fitted in the vertical direction.