JPH0243226Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a lighting device for a desk.
The purpose of this is to allow the lighting equipment to be stored under the shelf of the shelf installed at the rear of the desk so that it does not get in the way when lighting is not being used, and to be able to store the lighting equipment under the shelf board of the shelf installed at the rear of the desk. To improve illumination efficiency by rotating a lighting fixture forward with respect to a shelf board and illuminating at a position projecting forward from the shelf board.

[Prior art and problems to be solved] Conventionally, when lighting a desk by attaching a lighting fixture to a shelf installed at the rear of the desk, the lighting fixture usually protrudes forward from the shelf and becomes an obstruction. In order to prevent this, lighting equipment was attached to the back of the shelf board at the required height. However, in this case, the irradiation angle of the light from the lighting equipment to the area to be illuminated becomes narrow, resulting in poor lighting efficiency.Furthermore, if books, etc. are stored under the shelf board to which the lighting equipment is attached, the books, etc. will get in the way. There was a problem that the lighting efficiency was further reduced. In addition, since the books and the like stored under the shelves to which the lighting fixtures are attached are illuminated at close range, there have been problems such as the books and the like changing color quickly.

Therefore, recently, a desk lighting device as shown in Japanese Utility Model Application Publication No. 56-22030 has been proposed. This desk lighting system has both ends of the lighting fixture pivoted on a part of the shelf, and an operating handle provided on one of the pivots.
By making it possible to arbitrarily adjust the angle of the lighting fixture using a worm gear device, and by making the irradiation angle of the lighting fixture adjustable, it is possible to illuminate the necessary parts of the desk.

However, although the illumination angle of this desk lighting device can be adjusted, the lighting device remains in its original location and remains far away from the area where the desk is illuminated, making it difficult to provide lighting when needed. In some areas, sufficient brightness could not be obtained.

This invention was made to solve these conventional problems.

[Means for Solving the Problems] The present invention is a lighting device for a desk arranged below a shelf board located at a higher position than the desk top board of a shelf provided at the rear of the desk. A lighting fixture equipped with a light source such as a fluorescent lamp at the front of the lower surface is pivoted so that it can rotate around a horizontal rotation axis located below the shelf and at a position below the rotation axis. The upper end of the first connecting member is rotatably attached to a first horizontal shaft located below the shelf board and fixed at a position rearward from the rotating shaft, and the upper end of the first connecting member is rotatably attached to the side frame of the rotating lighting fixture. The upper end of the second connecting member is rotatably attached to a provided second horizontal shaft, the lower end of the first connecting member and the lower end of the second connecting member are connected with a pin, and this pin connecting portion and the lighting fixture A tension spring is attached between the spring and the rotating shaft of the lighting device, and when the lighting fixture is stored under the shelf board, the upper end of the second connecting member is located between the spring and the upper end of the first connecting member, and the upper end of the second connecting member is located between the spring and the upper end of the first connecting member. The upper end of the second connecting member is positioned in front of the spring and the upper end of the first connecting member is positioned behind the spring when the lighting fixture is rotated forward and protrudes from the shelf board.

[Function] Hereinafter, the function of the desk lighting device of the present invention will be explained.

First, when not lighting the room, store the lighting equipment under the shelf so that it does not get in the way. In this case, in order to maintain the lighting fixture in the stored state, the lighting fixture, the first connecting member, the second connecting member, and the spring are in the following state.

The upper end of the second connecting member is positioned between the spring and the first connecting member, and the first connecting member and the second connecting member are fixed by the tensile force of the spring. Since the rotation axis of the lighting fixture is fixed behind the spring, the lighting fixture is held in the stored state.

When lighting is to be performed, the lighting device is rotated from the stored state to a position below the rotation axis about the rotation axis against the tension of the spring to project forward from the shelf board. Along with this, the upper end of the second connecting member also moves forward together with the second horizontal axis located on the side frame of the lighting fixture. Since the lower end of the first connecting member is pin-coupled to the lower end of the second connecting member, the first connecting member rotates about the first horizontal axis at its upper end as the second connecting member moves.

The lighting fixture, the first connecting member, the second connecting member, and the spring are in the following state when the lighting fixture is in the protruding state.

The upper end of the second connecting member is positioned in front of the spring, and the first connecting member and the second connecting member are fixed by the tensile force of the spring. Since the rotation axis of the lighting fixture is fixed in front of the spring, the lighting fixture is held in a protruding state.

[Example] Hereinafter, an example of this invention will be described in detail based on the drawings.

In the figure, 10 is a desk body, and this desk body 10 has a desk top plate 1 on which an upper extractor 11 is provided on the bottom surface.
Desk side plates 13, 13 are vertically installed on both sides of the table 2, and a sleeve extractor 14 is provided inside the desk side plate 13 on the right side. The guide legs 15, 15 support the desk top plate 12 so that it can be moved up and down. Here, when supporting the desk top plate 12 at a required height position, a protrusion (not shown) provided inside the desk side plate 13 is provided in the vertical guide groove 15a provided in the guide leg 15.
and slide it along the guide groove 15a to connect the pair of insertion holes 13a, 13a... drilled at required intervals in the vertical direction of the desk side plate 13 and the mounting holes (not shown) provided in the guide leg 15. Align the holes, insert the connector 16 through these, and connect the desk side plate 13 and guide leg 1.
5 to support the desk top plate 12 at an appropriate height. When changing the height of the desk top plate 12, the insertion hole 1 of the desk side plate 12 is aligned with the mounting hole of the guide leg 15 and the connector 16 is inserted.
This is done by changing 3a. in this way,
If the height of the desk top plate 12 is freely adjustable, it is convenient because the height can be changed sequentially according to the height and growth of the user, but the desk body 10 used in this invention is of this type. However, the desk top plate 12 may not be raised or lowered.

Reference numeral 20 denotes a shelf installed at the rear of the desk top plate 12, and this shelf 20 has a required number of shelf boards 22 and partition plates 23 between the left and right side boards 21, 21 installed upright on the desk top board 12. is provided, and a back plate 2 is provided on the back side.
The shelf board 22 and the partition board 23 form a storage section for storing books, etc., and various power switches 25 are provided at required positions on the front side of the shelf 20.

Reference numeral 30 denotes a lighting device equipped with a light source 31 such as a fluorescent lamp. When there is no lamp, it is stored under the shelf board 22a, while when lighting is to be performed, it is rotated forward and protrudes forward from the shelf board 22a, and is held in this state by the locking means 40. ing. Here, when attaching the lighting fixture 30 to the front side of the shelf board 22a so as to be able to freely rotate forward, a mounting plate 33 is vertically provided on the lower surface of the shelf board 22a on the side of the side frame 32 of the lighting fixture 30. , a connecting pin 34 which is a horizontal rotating shaft is passed through the mounting plate 33 from the upper end of the front side of the side frame 32, and the mounting plate 33 is
Although the lighting fixture 30 is rotatably attached via the above-mentioned bracket, it is also possible to directly attach the upper end of the front side of the lighting fixture 30 to the front side of the shelf board 22a with a hinge or the like. Further, in this embodiment, the lighting equipment 30
A cover plate 36 with a shade 35 attached to the inside is provided at a portion located on the front side when the is stored under the shelf board 22a, and this cover plate 36 is vertically attached to the front end of the shelf board 22a. The cover plate 36 and the decorative plate 26 are made of the same material as the decorative plate 26, and when the lighting fixture 30 is stored below on the shelf board 22a, the cover plate 36 and the decorative plate 26 are in a continuous state, and the appearance is maintained beautifully. ing. Note that the lighting fixture 30 is located on both side boards 2 of the shelf board 20.
1 and 21, and in this case, the decorative plate 26 is not necessary and only the cover plate 36 is provided.

Next, the locking means 40 used in this embodiment will be explained. In this embodiment, as shown in FIGS. 4A, B, and C, in the gap where the side frame 32 of the lighting fixture 30 and the mounting plate 33 face each other,
A first connecting member 41 is pivotally attached to the mounting plate 33 using a first pin 42 that is a first horizontal shaft. In addition, a second
The connecting member 43 is pivoted by a second pin 44 , which is a second horizontal shaft. Then, the lower ends of each of the connecting members 41 and 43, which are floating ends, are connected by a connecting pin 45 to form a pin joint portion. As a result, a set of link mechanisms is constructed in which the attachment pin 34 and the first pin 42 are fixed nodes, the first connecting member 41 is a lever, and the second connecting member 43 is a connecting rod. The connecting pin 45 is passed through an arc-shaped guide hole 46 drilled in the mounting plate 33, and the third
As shown in the figure, a coil spring 4 is inserted between the mounting pin 34 that protrudes laterally from the mounting plate 33 and the connecting pin 45.
Elastic members such as No. 7 are stretched over each other and maintained in a mutually stretched state by the contraction force.

With the above configuration, the lighting fixture 30 can be configured as follows.
As shown in FIG. 4A, when the connecting pin 45 is stored under the shelf board 22a, the connecting pin 45 is drawn toward the mounting pin 34 by the coil spring 47 and is positioned at the upper edge of the front side of the guide hole 46. maintained. Then, when the lighting fixture 30 is rotated forward from this state, the second pin 44 is rotated forward following this rotation, and the connecting pin 45 is pushed by the second connecting member 43 against the coil spring 47 and is pushed into the guide hole. 46, and slide downward on the back side along the guide hole 46 as shown in FIG. 4B.
reaches the lower end of the back side. Then, when the lighting fixture 30 is further rotated forward, as shown in FIG. This state is maintained by the force, and thereby the lighting fixture 30 is held in a state protruding forward from the shelf board 22a. Moreover, when storing the lighting fixture 30 that protrudes in this way under the shelf board 22a, the reverse operation is performed.

Note that the locking means 40 is not limited to that shown in this embodiment, and any locking means 40 can be suitably used as long as it can hold the lighting fixture 30 protruding forward from the shelf board 22a in that state. For example, it is also possible to omit the guide hole 46.

Further, in this embodiment, as shown in FIG. 2, a sensor 50 of a sonic type or a light beam type is attached to the lower surface of the shelf board 22a behind the lighting fixture 30, so that the lighting fixture 30 protrudes forward from the shelf board 22a. Let me,
When removed from in front of the sensor 50,
When a person comes to the desk, the light source 31 of the lighting fixture 30 is automatically turned on in response to a signal from the sensor 50, and conversely, when the person leaves, the light source 31 is automatically turned off.

Therefore, when the sensor 50 is provided as in this embodiment, when the lighting equipment 30 is stored on the shelf board 22a, it will not be hidden behind the lighting equipment 30 and will not become a hindrance, and it will not be necessary to use the sensor 50 for illumination. When the lighting fixture 30 is projected forward, the light source 31 is automatically turned on and off, and there is no need to forget to turn off the light source 31. However, sensor 5
0 is not necessarily necessary, and its mounting position can be changed as appropriate.

In addition, in this embodiment, the desk top plate 1 of the desk main body 10
2, I explained about a desk with a shelf 20 set up on it,
It is also possible to use a desk such as a writing bicycle, in which a desk top plate erected on the front side of a shelf unit is folded down horizontally from the shelf unit.

[Effects of the invention] As detailed above, in the desk lighting device according to this invention, when the desk is not illuminated, the lighting equipment attached to the shelf board of the shelf provided at the rear of the desk Since the lighting fixtures are stored under the shelves, the lighting fixtures do not protrude forward from the shelves and get in the way, resulting in a clean appearance.

In addition, when lighting a desk, the lighting fixture stored under the shelf is rotated forward, and the lighting fixture is projected forward from the shelf by the first connecting member, the second connecting member, and the spring. I was able to hold it in place to illuminate the desk. Therefore, the lighting equipment is brought closer to the area to be illuminated, the lighting efficiency is increased, and
Even when books, etc. are stored under the shelf board with the lighting fixtures attached, they do not get in the way and reduce lighting efficiency; This also eliminates the possibility of the color changing immediately due to lighting.

Furthermore, in the desk lighting device according to this invention, the lighting device can be moved from a state where it projects forward from the shelf board to under the shelf board by an extremely simple operation of rotating backward against the elastic force of the spring. It can be stored.

[Brief explanation of the drawing]

The drawings all show embodiments of this invention.
The figure is a perspective view of the desk, Figure 2 is a partially enlarged sectional view from the side showing the lighting fixtures stored under the shelf, and Figure 3 is the front view with the lighting fixtures attached to the front side of the shelf. Partial sectional view shown from Figure 4 A, B, C
FIG. 2 is a partial sectional view showing a state in which the lighting fixture is protruded from a state where it is stored under the shelf board to the front of the shelf board. Explanation of symbols, 12... desk top plate, 20... shelf, 2
2...Shelf board, 30...Lighting equipment, 31...Light source,
34... Connecting pin, 40... Locking means, 41...
1st connecting member, 42 ...1st pin, 43...2nd connecting member, 44 ...2nd pin, 45...connecting pin, 4
7...Coil spring.

Claims (1)

[Scope of Claim for Utility Model Registration] A lighting device for a desk arranged below a shelf located at a higher position than the desk top of a shelf provided at the rear of the desk, wherein: A lighting fixture equipped with a light source such as a fluorescent lamp is pivotally supported so as to rotate about a horizontal axis of rotation disposed below the shelf board and at a position below the axis of rotation, and the shelf board The upper end of the first connecting member is rotatably attached to a first horizontal shaft located below and fixed at a position rearward from the rotating shaft, and a second
The upper end of the second connecting member is rotatably attached to the horizontal shaft, the lower end of the first connecting member and the lower end of the second connecting member are connected with a pin, and this pin connecting portion is connected to the vicinity of the rotation axis of the lighting fixture. a tension spring is attached between the shelves; when the lighting fixture is stored under the shelf board, the upper end of the second connecting member is located between the spring and the upper end of the first connecting member; and the lighting fixture is attached to the shelf A lighting device for a desk, characterized in that the upper end of the second connecting member is located in front of the spring and the upper end of the first connecting member is located behind the spring when the second connecting member is rotated and projected forward from the plate.