JPH04133205A - Lighting fixture - Google Patents

Abstract

PURPOSE:To enhance the irradiation efficiency by supporting a louver in an irradiation opening by the two ends in longitudinal direction, and thereby enlarging the open end at each side edge intersecting perpendicularly to the longitudinal of the louver. CONSTITUTION:When a louver 31 is installed at an irradiation opening 12 provided in the body 11 of a lighting fixture, one end of the louver 31 is fitted in this irradiation opening 12, and a hooking piece 39 at this end of louver 31 is inserted in and hitched at a hole 40 in an end plate at one end of the fixture body 11, and the other end of the louver 31 is fitted in the irradiation opening 12. Then a detaining member 41 at the other end of the louver 31 is rotated, and a detent piece 42 is allowed to project to be detained with a detaining hole 43 in the fixture body 11. Thereby the louver 31 is supported in the condition being fitted in the opening 12. With this lighting fixture, it is possible to enlarge the open end at each side edge intersecting perpendicularly to the longitudinal of the louver 31 to the degree approx. the same as the width of the opening 12, and the irradiation efficiency can be enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a lighting fixture in which a louver body is attached to an irradiation opening of a fixture body housing a lamp.

(Prior Art) This type of lighting equipment uses a straight tube type lamp, as the structure described in Japanese Patent Publication No. 63-16844 is known, and the equipment body housing this lamp is A long irradiation opening is provided on the lower surface of the lamp in the longitudinal direction, and a louver body is attached to the irradiation opening of the device body so that it can be opened and closed.

The louver body is provided with mounting brackets on both sides of the louver body in a direction perpendicular to the longitudinal direction of the louver body, so that it can be attached to the main body of the appliance in an openable and closable manner. The lamp can be replaced through the irradiation opening by removing or shifting the louver body from the irradiation opening of the instrument body.

(Problems to be Solved by the Invention) In this type of lighting equipment, a louver body is attached to the irradiation opening, so the irradiation efficiency changes in proportion to the opening area of the louver body. That is, if the opening area of the louver body is large, the irradiation efficiency improves, and conversely, if the opening area is small, the irradiation efficiency decreases. In particular, the opening width of the louver body in the direction perpendicular to the longitudinal direction of the lamp has a large effect on the irradiation efficiency.

However, in conventional lighting fixtures, the mounting brackets are provided on both sides of the louver body in a direction perpendicular to the longitudinal direction of the louver body, so space is required to accommodate the mounting brackets on both sides of the louver body. The opening width was narrower than the width of the irradiation aperture in the main body of the device, resulting in poor irradiation efficiency.

The present invention has been made in view of these points, and it is an object of the present invention to improve the irradiation efficiency by increasing the opening width of the louver body in the direction orthogonal to the longitudinal direction of the lamp, which particularly has a large effect on the irradiation efficiency. The purpose is to provide lighting equipment that can

[Structure of the invention]

(Means for Solving the Problems) The present invention provides a lamp having a cap at at least one end of a straight pipe portion, a device body that accommodates the lamp and has an irradiation opening long in the longitudinal direction of the lamp, and an irradiation device for the device body. a louver body which is attached to the opening so as to be openable and closable, and supporting means for supporting the louver body so as to be openable and closable within the irradiation opening of the instrument main body are provided at both ends of the louver body in the longitudinal direction; The opening ends of both side edges perpendicular to the longitudinal direction are provided to have approximately the same width as the irradiation opening of the instrument main body.

(Function) In the present invention, by providing support means at both ends of the louver body in the longitudinal direction to support the louver body so as to be openable and closable within the irradiation opening of the instrument body, both side edges perpendicular to the longitudinal direction of the louver body are provided. The opening end of the louver is enlarged to the extent that it is almost the same width as the irradiation aperture of the main body of the louver, in other words, the opening width of the louver body is increased in the direction orthogonal to the longitudinal direction of the lamp, which greatly affects the irradiation efficiency. Improve efficiency.

(Embodiments) Hereinafter, configurations of embodiments of the present invention will be described with reference to the drawings.

The figure shows a ceiling-embedded lighting fixture, in which two straight tube lamps 3 having bases 2 at both ends of a straight tube tIfS1 are used.

Reference numeral 11 denotes a device main body, which is formed in the shape of a long box frame along the longitudinal direction of the lamp 3, and has an irradiation opening 12 formed on its lower surface, and a ceiling surface (not shown) on its lower peripheral edge. An edge frame portion 13 is formed to be joined to. A support plate 14 is installed inside the appliance main body 11, and lamp sockets 15 to which the caps 2 of the lamps 3 are connected are provided at both ends of the lower surface of the support plate 14, respectively.

Further, reference numeral 21 denotes a reflector, which is formed to expand downward along the reverse slope shape of the vertical louver of the louver body, which will be described later, and is attached to the lower surface of the support plate 14 corresponding to the position of each lamp 3 with screws 22. ing.

Reference numeral 31 denotes a louver body, which is assembled in a lattice shape with a vertical louver 32 provided along the longitudinal direction of the lamp 3 and a plurality of horizontal louvers 33 installed orthogonally inside the vertical louver 32. It is attached to the irradiation opening I2 of the main body 11 so that it can be opened and closed. The vertical louver 32 has an opposite slope that expands downward, and its upper end joins flush with the opposite slope of the reflector 21. On the other hand, the horizontal louver 33 has an opposite slope that expands downward. However, the upper end is slightly short so as not to interfere with the lamp 3.

Further, on the outside of the open ends of both ends of the louver body 31 in the longitudinal direction, a frame portion 34 having a hollow-shaped cross section is provided integrally with the horizontal louver 33, and on the other hand, both side edges perpendicular to the longitudinal direction of the louver body 31 are provided. A folded piece 35 is provided at the opening end of the vertical louver 32 so that the width thereof is approximately the same as the width of the irradiation opening 12 of the instrument body 11.

At both ends of the louver body 31 in the longitudinal direction, support means 36 and 37 are provided that support the louver body 31 in the irradiation opening 12 of the instrument body 11 so as to be openable and closable. The support means 36 at one end is formed by cutting and raising a hook piece 39 horizontally from the frame portion 34 and having a hook-shaped hook portion 38 at the tip.
The equipment itself! It engages in a hooking hole 40 provided in the end plate at one end of 1. On the other hand, the support means 37 at the other end includes a locking body 41 rotatably provided on the frame portion 34, and a locking piece protruding from the side of the locking body 41 as the locking body 41 rotates. 42 is frame 3
4, and is removable from a locking hole 43 provided in the end plate at the other end of the instrument main body 11.

Next, the operation of this embodiment will be explained.

First, in order to attach the louver body 31 to the irradiation opening 12 of the instrument body 11, one end of the louver body 31 is inserted and fitted into the irradiation opening 12, and the hook piece 39 at one end of the louver body 31 is attached to one end of the instrument body 11. Insert it into the hooking hole 40 of the end plate and hang it,
Next, the other end of the louver body 31 is fitted into the irradiation opening 12, and the locking body 41 at the other end of the louver body 31 is rotated to protrude the locking piece 42 to lock the instrument body 11. It engages with the hole 43. Thereby, the louver body 31 is supported while being fitted within the irradiation opening 12.

When replacing the lamp 3, etc., rotate the locking body 41 of the louver body 31, remove the locking piece 42 from the locking hole 43, and remove the hook part of the hook piece 39 at one end of the louver body 31. By rotating the other end of the louver body 31 downward about the center, the irradiation opening 12 is opened, and the lamp 3 can be replaced through the irradiation opening 12.

In the lighting fixture configured in this way, the opening ends of the side edges perpendicular to the longitudinal direction of the louver body 31 can be made large to the extent that they are approximately the same width as the irradiation opening 12 of the fixture body 11, that is, In particular, the opening width of the louver body 31 in the direction orthogonal to the longitudinal direction of the lamp 3, which greatly affects the irradiation efficiency, can be increased, and the irradiation efficiency can be improved.

Specifically, the effective dimensions of the irradiation opening 12 of the instrument body 11 are approximately 1200 x 300 mm, and the width IFl required at the edge of the louver body 31 where the support means is provided.
z++n+, and the width of the edge without support means is 5mm+, the opening area of the louver body 31 is conventionally (1200-
5X2)X (300-+5X2) =3213
00, whereas in this example, (120θX15
X2)

Note that support means 36 are provided at both ends of the louver body 31 in the longitudinal direction.
．． 37, an installation space is required, but the space is the same or slightly increased compared to the conventional one, and the reduction in the aperture area is small and the effect of reduction in irradiation efficiency is small.

In the above embodiment, a lighting device using a straight tube type lamp 3 having caps 2 at both ends was shown, but for example, a single cap type lamp with a luminous tube portion bent into a substantially U-shape may be used. It can also be applied to illuminated lighting equipment.

Furthermore, the support means 36 and 37 provided at both ends of the louver body 31 in the longitudinal direction may be, for example, springs, and are not limited thereto.

〔Effect of the invention〕

According to the present invention, support means for supporting the louver body in an openable and closable manner within the irradiation opening of the instrument main body are provided at both ends of the louver body in the longitudinal direction, and the open ends of both side edges perpendicular to the longitudinal direction of the louver body are provided. By increasing the width of the louver body to almost the same width as the width of the irradiation aperture in the fixture body, the louver body opening width can be increased, especially in the direction perpendicular to the lamp's longitudinal direction, which greatly affects irradiation efficiency, improving irradiation efficiency. can be done.

[Brief explanation of drawings]

1 and 2 are sectional views showing one embodiment of the lighting device of the present invention, and FIG. 3 is a perspective view. 2. Base, 3. Lamp, 11. Appliance body, 12.
- Irradiation opening, 31... Louver body, 36. 37... Support means.

Claims (1)

[Claims] (1) A lamp having a cap at at least one end of a straight pipe part, a fixture body that houses the lamp and has a long irradiation opening in the longitudinal direction of the lamp, and a louver body that is detachably attached to the irradiation opening of the fixture body. Supporting means for supporting the louver body so as to be openable and closable within the irradiation opening of the instrument body are provided at both ends of the louver body in the longitudinal direction, and openings on both side edges perpendicular to the longitudinal direction of the louver body are provided. A lighting fixture characterized in that the end is provided with approximately the same width as the irradiation opening of the fixture body.