JPH0455373Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a lighting fixture that is incorporated into, for example, a bookshelf of a study desk.

[Conventional technology]

2. Description of the Related Art It is known that a study desk or the like equipped with a bookshelf has a lighting fixture built into the lower surface of the shelf board of the bookshelf to illuminate the desk surface.

By the way, in this type of lighting equipment, there is a desire to adjust the lighting angle so that the light distribution on the desk surface can be adjusted. As a specific adjustment means, for example, as seen in ``Japanese Patent Publication No. 62-3521,'' a reflector that reflects the light from a fluorescent lamp downward, or a shade that accommodates a fluorescent lamp is used as a shelf board. It is conceivable to pivot the reflector plate or shade so that it can rotate at a certain angle, and change the direction of the reflector plate or shade.

[Problem that the invention attempts to solve]

However, according to the configuration of this prior art, when adjusting the illumination angle, the screws are warmed up, the reflector or shade is rotated to the desired position, and then the screws are tightened again to adjust the reflector or shade. The shade must be positioned and fixed. For this reason, it takes time and effort to adjust the lighting angle, and it also requires special screws and screw holes for fixing, which makes the structure of the pivot parts of the reflector and shade complicated, leading to problems such as high costs. be.

Moreover, since this lighting fixture is intended to illuminate a relatively narrow and limited area, such as a desk surface, there is no need to steplessly change the lighting angle over a wide range, and improvements can be made in this respect as well. There was room.

Therefore, an object of the present invention is to provide a lighting fixture which can change the lighting angle in two stages with a simple structure and which also allows the lighting angle to be easily adjusted.

[Means for solving problems]

Therefore, the present invention is based on a lighting fixture that includes an elongated shade that accommodates a lamp, and a pair of support members that sandwich and support the end plates at both ends of the shade. and a protruding position protruding outward from between the supporting members, and are pivotally connected at a fixed angle, and the end plate of the shade and the supporting member have a substantially V-shape at the mutually opposing portion. A spring material is interposed in a compressed state, one end of which is rotatably locked at a position off the rotation fulcrum of the end plate, and the other end of which is rotatably locked to a support member. It is characterized in that the shade is pressed and biased toward either the retracted position or the protruding position.

[Effect]

According to this configuration, when the shade is rotated from the storage position to the protrusion position, or conversely from the protrusion position to the storage position, the V-shaped spring material is gradually compressed. When the rotation angle of the shade exceeds the maximum compression point of this spring material, the spring material rotates in the direction of rotation of the shade using the other end as a fulcrum, and the direction of action of the reaction force of this spring material becomes the rotation of the shade. Changes along the direction of motion. Therefore, the shade is pressed and biased in the rotation direction by the reaction force of the spring member during the rotation, and is selectively positioned and held at either the protrusion position or the retracted position.

Therefore, simply rotating the shade determines the rotating position of the shade in two stages, making it easier to adjust the lighting angle than before, and requiring less effort. .

In addition, as mentioned above, since the shade is held in the retracted position or the protruding position by the reaction force of the spring material, there is no need for special screws for positioning as in the past, and the pivot part of the shade is The structure of can be simplified.

〔Example〕

The present invention will be explained below based on an embodiment shown in the drawings.

As shown in FIG. 3, the lighting equipment indicated by the reference numeral 1 in the figure is, for example, a bookshelf 4 installed on the desk surface 3 of the study desk 2.
is integrally incorporated into. The bookshelf 4 has a shelf board 6 installed between a pair of left and right side boards 5, and support members 7 are attached to the mutually opposing surfaces of these side boards 5, respectively. The support member 7 has a shape in which a flange wall 9 facing the side plate 5 is integrally formed on the peripheral edge of a flat board 8, and this support member 7 has screws ( (not shown) is inserted, and the insertion end thereof is screwed into the side plate 5, thereby being fixed to the bookshelf 4.

An instrument main body 11 is pivotally supported between these left and right support members 7 so as to be rotatable at a certain angle.
This instrument body 11 includes a shade 12 made of synthetic resin. The shade 12 in this example has a length of 1 m.
It has the shape of an elongated gutter in the front and back, and both ends and one side along the longitudinal direction are open over the entire length. The openings at both ends of the shade 12 are respectively closed by left and right end plates 13, and the end plates 13 are rotatably supported on the support member 7 via a pivot shaft 14 extending in the horizontal direction.

Therefore, the shade 12 has a pivot point 14 as a fulcrum, and has a retracted position where it enters between the support members 7 as shown in FIG. 4, and a protrusion position where it protrudes forward from between the support members 7 as shown in FIG. When the shade 12 is rotated to the protruding position, one opening of the shade 12 faces downward.
It faces desk surface 3.

A straight tube-shaped fluorescent lamp 15 is arranged inside the shade 12 along its longitudinal direction.

On the other hand, an arcuate guide groove 16 centered on the pivot 14 is formed on the surface of the support member 7 facing the shade 12 . A protrusion 17 protruding from the end plate 13 of the shade 12 is slidably fitted into the guide groove 16, and between the protrusion 17 and the base plate 8 of the support member 7, the shade 12 is moved to the storage position. Alternatively, a spring member 18 is interposed to press and bias toward either the protruding position. As shown in FIG. 2, the spring material 18 is a wire material formed into a substantially V-shape, and in the case of this embodiment, a multi-layered coil portion 19 has a coil portion 19 wound at both ends in a shape that expands toward each other. It has a pair of extending arms 20a, 20b. Ring-shaped locking portions 21a and 21b are formed at the tips of these arm portions 20a and 20b, respectively, and one of the locking portions 21a is locked to the tip end surface of the protrusion 17. At the same time, the other locking portion 21b
is secured to the back surface of the board 8.

To explain the locking structure of the locking portions 21a and 21b on behalf of the protrusion 17 side, as shown in FIGS. It is installed protrudingly. A locking portion 21a is fitted onto the outer periphery of the support shaft 22 so as to be rotatable around the axis, and a flange portion on the outer peripheral surface of the distal end of the support shaft 22 prevents the locking portion 21a from coming off. 23 is provided protrudingly. Therefore,
The spring material 18 has locking portions 21a and 21b at both ends thereof.
is pushed into the outer periphery of the support shaft 22 over the flange 23, thereby being supported across the protrusion 17 and the substrate 8, and the locking portion 21b on the substrate 8 side
As shown in FIG. 1, is located near the middle of the guide groove 16 on the opposite side of the guide groove 16 from the pivot point of the shade 12. In this way, the locking parts 21a and 21b are connected to the support shaft 2.
2, the arm portions 20a, 2
0b are pushed toward each other, and a load is applied to the coil portion 19 in the winding direction. At this time, the reaction force generated in the arm portions 20a and 20b causes the shade 12 to move to the retracted position or the protruding position. It is pressed toward one of these positions and is selectively positioned and held in either of these positions.

Further, when the shade 12 is rotated to the retracted position and the extended position, the protrusion 17 comes into contact with the end edge of the guide groove 16 and functions as a stopper to prevent excessive rotation of the shade 12. A buffer rubber 24 made of, for example, chloroprene rubber is adhered to the circumferential surface of the protrusion 17, which abuts the terminal edge of the guide groove 16 on the storage position side.

The buffer rubber 24 may not only be bonded to the protrusion 17 but may also be provided at the end edge of the guide groove 16 as the case may be.

In such a configuration, when the shade 12 currently in the retracted position is rotated in the direction of the arrow toward the protruding position as shown in FIG. Since the coil portion 20a is close to the other arm portion 20b, a force is applied to the coil portion 19 in a direction to further tighten the coil portion, and the spring material 18 is compressed. When the rotation angle of the shade 12 exceeds the maximum compression point of the spring material 18, the groove material 18 is moved to the other arm portion 20b, as shown by the imaginary line in FIG.
It rotates approximately 90 degrees counterclockwise about the locking portion 21b of the spring member 18 as a fulcrum, and one arm portion 20a is located in front of the rotation fulcrum of the spring member 18. Therefore, since the reaction force of the spring material 18 acts forward, the shade 12
is pressed forward about the pivot 14 as a fulcrum.
Due to this pressing, the protrusion 17 comes into contact with the terminal edge of the guide groove 16, and the shade 12 is positioned and held at the protruding position.

Conversely, when the shade 12 in the protruding position is rotated toward the retracted position, the shade 12 is rotated in the same way as above.
When the rotation angle of 2 exceeds the maximum compression point of the spring material 18, the spring material 18 rotates approximately 90 degrees clockwise about the locking portion 21b of the other arm portion 20b as a fulcrum.
Rotate. Therefore, since one arm portion 20a is located above the rotational fulcrum of the spring member 18, the reaction force of the spring member 18 acts upward, and the shade 12 is pressed upward with the pivot 14 as the fulcrum. Ru. This pressing causes the protrusion 17 to come into contact with the end edge of the guide groove 16, and the shade 12 is positioned and held at the retracted position.

Therefore, according to the above configuration, simply shade 1
By simply rotating the shade 12, the shade 12 can be selectively positioned and held in either the retracted position or the extended position, so the illumination angle can be easily adjusted in two stages. It requires less effort than before.

Further, since the shade 12 is held in the retracted position or the protruding position by the reaction force of the spring material 18, there is no need for positioning screws or screw holes, and the structure of the pivot portion of the shade 12 is simplified accordingly. can be converted into

In addition, in this embodiment, a cushioning rubber 24 is bonded to the protrusion 17 of the shade 12 that fits into the guide groove 16, which comes into contact with the end edge of the guide groove 16 when the shade 12 is rotated to the storage position. Therefore, even if the shade 12 is vigorously rotated to the retracted position by the reaction force of the spring material 18, the protrusion 17 will not hold the cushioning rubber 2.
4 and comes into contact with the guide groove 16,
It is possible to absorb and alleviate the impact and impact sound when the shade 12 is stored.

At the same time, the locking portions 21a, 2 of the spring material 18
1b to the end plate 1 of the shade 12, for example with screws.
3 and the base plate 8, the locking parts 21a and 21b of the spring material 18 rotate relative to the end plate 13 and the base plate 8 when the shade 12 rotates. There is a possibility that the spring material 18 may become loose and come off.

However, in the above embodiment, the locking portions 21a, 2
A support shaft 2 with 1b protruding from the substrate 8 and the end plate 13
The support shaft 22 is rotatably fitted onto the outer periphery of the support shaft 22, and a collar 23 for preventing slipping off is provided protruding from the outer peripheral surface of the distal end of the support shaft 22, so that when the shade 12 rotates, the spring material 18
The shield 12 can be reliably pressed and biased without coming off.

Further, the locking portions 18a and 18b are simply the support shaft 22.
Because it only needs to be pushed into the outer periphery, installation is completed more easily than when tightening with screws, and there is no need for special screws, which has the advantage of reducing the number of parts and providing the product at a lower cost.

In the above embodiment, the spring material is made of a wire rod, but it may also be made of a band-shaped metal plate bent into a V-shape, or the coil portion between the pair of arm portions may be omitted.

Furthermore, the lighting equipment according to the present invention is not limited to being used as a study desk, but may be used by being attached to the top of a blackboard, for example.

[Effects of the invention] According to the invention described above, the shade can be positioned and held in either the retracted position or the extended position and the illumination angle can be selected in two stages by simply rotating the shade. can be adjusted to
It requires less effort than before.

In addition, since there is no need for screws or screw holes to fix the rotating position of the shade, the structure of the pivot part of the shade can be simplified, which has the advantage of being able to be provided at a lower cost. .

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a side view of the lighting device, FIG. 2 is a front view of the spring material, and FIG. 3 is a perspective view of the lighting device rotated to the protruding position. Figure 4 is a perspective view of the lighting fixture in a state where it has been rotated to the storage position, Figure 5 is a side view of the spring material attachment part, and Figure 6 is a view taken from the direction of the arrow in Figure 5. be. 7... Support member, 12... Shade, 13... End plate, 15... Fluorescent lamp, 18... Spring material.

Claims (1)

[Claims for Utility Model Registration] A long and narrow shade that accommodates a lamp, and a pair of supporting members that sandwich and support the end plates at both ends of the shade. The shade is pivotally connected to a protruding position protruding outward from between the support members so as to be rotatable at a certain angle, and a substantially V
The spring member is compressed and has one end rotatably locked at a position away from the rotational fulcrum of the end plate, and the other end is rotatably locked to the support member. 1. A lighting fixture, characterized in that the shade is equipped with a spring material and is biased toward either a retracted position or a protruded position.