JPH017931Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a louvered fluorescent lamp fixture, and in particular to a structure for improving the light distribution and making the shape more compact and highly flexible. .

[Conventional technology]

For this purpose, the inventor of the present invention
No. 58-158750, the plan view of which is shown in FIG. In the fluorescent lamp fixture with a louver, the fluorescent lamp includes a square louver 2 in which each cell is formed into a square of the same size and is supported by a square louver frame 1. However, we propose that the main feature is at least one straight tube fluorescent lamp 3 arranged parallel to each of the four sides of the louver.

This configuration has an extremely biased light distribution (perpendicular to the lamp axis) that occurred in the conventional product configuration in which the straight tube fluorescent lamp 3 was disposed only in one direction with respect to the louver 2 as shown in Figure 6. The difference between the light distribution in the direction and the light distribution in the direction parallel to the lamp axis has been eliminated.

[Problem that the invention attempts to solve]

However, in the previously proposed device, the straight tube fluorescent lamp 3 is arranged parallel to each of the four sides of the louver 2, so the external shape of the fixture is at least the full length of the straight tube fluorescent lamp 3. It was inevitable that it would become larger. Another drawback was that it could not accommodate rectangular shapes. Furthermore, if a 20W straight tube fluorescent lamp is used in a place where a 200V power supply is used in order to downsize the lamp, the voltage must be stepped down, making it relatively expensive. In response to this problem, the object of the present invention is to provide a highly flexible fluorescent lamp fixture with a louver, which can be adapted to smaller and rectangular fixture external shapes and has no bias in light distribution.

[Means for solving problems]

The lighting equipment of this invention has a main body with an opening at the bottom, and an even number of vertical and horizontal cells, each of which is formed into a square of the same size, adjacent to the bottom of an annular fluorescent lamp disposed inside the main body. The annular fluorescent lamp is characterized in that it is provided with a louver consisting of eyes, and the annular fluorescent lamp is arranged so as to be equally divided into the four squares, one for every two squares in the vertical and horizontal directions of the louver.

[Effect]

In this design, the light source is an annular fluorescent lamp, so even if the wattage is relatively large, the outside size is small, so the outside size of the fixture can be made small. Since the light from the louver is distributed in each direction, if the vertical and horizontal grids of the entire louver are even numbers, even if the external shape of the fixture is rectangular, it is possible to eliminate bias in the light distribution.

〔Example〕

FIG. 1 is a longitudinal sectional view showing an embodiment of this invention.
Figure 2 is a plan view of the same, and in these figures, 1 is a louver frame, and its external shape has an aspect ratio of approximately 1:2.
It forms a rectangle. The louver 2 is supported by the louver 1 and is made up of squares of the same size, 2 vertically and 4 horizontally.

Reference numeral 21 indicates the edge of the louver. Reference numerals 4 and 4' indicate 40W annular fluorescent lamps, which are placed above the louver 2 in the vicinity of the louver 2, two each in the vertical and horizontal directions, one in every four squares in total. Since the center 0 of the ring overlaps the center of the intersection 22 of the louver's rim 21, the ring of the lamp 4 is equally divided into each grid. Further, the base portions 5, 5' of each lamp 4, 4' are disposed directly above and opposite to the louver rim 21.
6 is a lamp holding spring, which is attached to the reflector plate 7;
This is also placed directly above the louver's ledge 21. 8 is a lamp socket, 9 is internal wiring, 10 is a rectangular box-shaped appliance body, and 11 is a ceiling to which the appliance of the present invention is attached.

In the louvered fluorescent lamp fixture configured as described above, the annular fluorescent lamp 4 itself is a light source with little directionality in light distribution in the horizontal angular direction;
This is the part of the lamp that is close to the bases 5, 5' and has a slightly lower amount of light because it is arranged equally close to each square of the louver 2 and with the bases 5, 5' of both lamps facing each other. 41 are also equally distributed in each direction through the louver 2 when viewed as a whole fixture, and as a result, the light distribution also has no directionality in the horizontal angular direction. In addition, when using an annular fluorescent lamp, the lamp base 5 tends to be an eyesore.
Since the lamp holding spring 6 is disposed directly above and close to the louver ridge 21, it is hidden by the louver ridge 21 and becomes inconspicuous.

The rectangular external shape of the fixture for two 40W annular fluorescent lamps in this example has an external dimension of approximately 400 mm x 800 mm, but if you compare this with the fixture with the configuration shown in Figures 5 and 6, you will notice the difference between square and rectangular external shapes. There is, but
In the example shown in Figure 5, when the lamps are four 20W straight tube fluorescent lamps plus one 40W annular fluorescent lamp, the external size is approximately 800 mm square, and the area is approximately twice that of the example shown in Figure 2. The total amount of light is 1
It becomes 1/8. Also, in the one shown in Figure 6, the lamp is
When using four 20W straight tube fluorescent lamps, the external size is approximately
The area is 600 mm square, the area is 9/8 of the embodiment of the present invention shown in Fig. 2, and the total amount of lamp light is 7/8. Therefore, the amount of light per unit area in the embodiment of the present invention is 145% of that in FIG. 5 and 129% of that in FIG. 6, making it possible to obtain a compact fixture with a large amount of light. more lamps
The power supply is reduced by using a 40W annular fluorescent lamp.
Even in the case of 200V, it is possible to configure components such as stabilizers at a lower cost.

Although the above example shows an example using two 40W annular fluorescent lamps, even if three or four lamps are used as in the configurations shown in Figures 3 and 4, the results will be similar to the corresponding conventional products. In comparison, it is possible to achieve a smaller size and an increase in the amount of light per unit area. Furthermore, if the annular fluorescent lamp is rated at 40W, it will be advantageous against a 200V power supply, but there is no need to limit it to this if it is a 100V power supply.

[Effect of idea]

As explained above, the present invention uses a louvered fluorescent lamp fixture, in which a plurality of annular fluorescent lamps are arranged equally in the squares of the louver, thereby reducing the difference in illuminance between adjacent fluorescent lamps and creating a uniform light irradiation surface. is obtained, the light distribution has no directionality in the horizontal angular direction, it is small, the amount of light per unit area is large, and the configuration can be made into a rectangular shape with high flexibility.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of a lighting fixture showing one embodiment of the present invention, Fig. 2 is a bottom view of the example shown in Fig. 1, and Fig.
4 are bottom views of a lighting fixture showing another embodiment of the present invention, and FIGS. 5 and 6 are bottom views of conventional lighting fixtures for comparison with the present invention. 2 is a louver, 21 is a louver arm, 4 is an annular fluorescent lamp, 5 is a lamp base, and 6 is a lamp holding spring. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A device body with an opening at the bottom, a plurality of annular fluorescent lamps disposed within the device body, and a plurality of circular fluorescent lamps disposed at the bottom of the annular fluorescent lamps, each square having In a louvered fluorescent lamp fixture equipped with a louver formed into a square of the same size and consisting of an even number of squares in each length and width, the annular fluorescent lamp is placed in each of the four squares, two in the length and width of the louver, one in total.
A louvered fluorescent lamp fixture characterized in that the ring of the lamp is equally divided into each cell. (2) The louvered fluorescent lamp fixture according to claim 1 of the utility model registration claim, characterized in that when the lamp is attached via a lamp holding spring, the lamp holding spring is disposed above the ledge of the louver. . (3) The fluorescent lamp fixture with a louver according to claim 1 of the utility model registration claim, characterized in that the lamp base is disposed directly above the rim of the louver. (4) The louvered fluorescent lamp apparatus according to claim 3, wherein the lamp caps of each lamp are not arranged in the same direction.