JPH07220508A - Luminaire - Google Patents

Abstract

PURPOSE:To provide a luminaire in which lower side illuminance of an incandescent lamp is enhanced. CONSTITUTION:A circular fluorescent lamp 2 is arranged on the lower surface of a circular main body 1, and a circular first translucent cover 3 which covers the lower surface of the fluorescent lamp 2 is arranged. A plurality of incandescent lamps 4 are extrusively arranged on the outside from the upper surface of the main body 1, and a ring-shaped second translucent cover 5 which covers the lower surface of the incandescent lamp 4 is arranged. The second translucent cover 5 has a partition 6 which partitions the fluorescent lamp 2 from the incandescent lamp 4. By making the illumination by the incandescent lamp 4 in semi-direct illumination, the lower luminous intensity distribution is increased to satisfy the brightness.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a luminaire using a fluorescent lamp and an incandescent lamp together.

[0002]

2. Description of the Related Art Some of the luminaires of this type are provided with a fluorescent lamp on the lower surface of a main body, a semi-transparent cover covering the lower surface of the fluorescent lamp, and an incandescent lamp on the upper surface of the main body.

[0003]

However, since the incandescent lamp is located on the upper surface of the main body, the incandescent lamp mainly serves as indirect illumination mainly for upward light distribution, which is unsatisfactory for the user in terms of brightness.
It is an object of the present invention to provide a lighting fixture with an incandescent lamp having improved lower surface illuminance. Further, other objects such as how to provide the incandescent lamp due to the configuration incidental to the present invention will become apparent from the detailed description given later.

[0004]

[Means for Solving the Problems] As described in the claims.

[0005]

According to the first aspect of the present invention, the incandescent lamp is used as the semi-indirect illumination so that the downward light distribution is increased and the brightness is satisfied. And since there is a second semi-transparent cover that covers the lower surface of the incandescent lamp, glare is small.
Moreover, since the second translucent cover has a partition (semitransparent) that separates the fluorescent lamp and the incandescent lamp, the appearance of the first translucent cover and the second translucent cover during illumination. In addition, a shadow is not generated by the partition part, or conversely, too much interference light is transmitted through the partition part. According to claim 2, even if the first semitransparent cover is removed, the second semitransparent cover does not drop carelessly, and it is possible to prevent the second semitransparent cover from being inadvertently damaged and to improve safety. It is also appropriate from the viewpoint. According to claim 3, the temperature rise in the first translucent cover can be reduced. According to claim 4, the dazzling of the incandescent lamp light can be more effectively reduced by the uneven pattern, and
When the second semi-transparent cover is attached, the incandescent lamp can be aligned with the uneven pattern as a guide to facilitate the attachment. According to the fifth aspect, since the incandescent lamp is provided outside the main body by the specifying means, the downward light distribution by the incandescent lamp is increased and the brightness is satisfied. Further, it is possible to use an existing main body, and in that case, it is not necessary to develop a new dedicated main body, which contributes to a reduction in manufacturing cost. According to the sixth aspect, the support plate and the ring plate cooperate with each other to cover the upper surface of the main body, so that the appearance is good, and the mutual positioning of the support plate and the ring plate is accurately performed by fitting the arm and the groove. According to claim 7,
The second translucent cover can be attached to the ring plate via the upper end of the partition. According to the eighth aspect, the cord processing connected to the incandescent lamp can be appropriately performed. In other words, the passage of the cord can be secured, the appearance is not visible from the outside, and it is safe. According to the ninth aspect, since the incandescent lamp is provided outside the main body, the downward light distribution by the incandescent lamp is increased and the brightness is satisfied. Further, it is possible to use an existing main body, and in that case, it is not necessary to develop a new dedicated main body, which contributes to a reduction in manufacturing cost. According to the tenth aspect, the support plate and the ring plate cooperate with each other to cover the upper surface of the main body, so that the appearance is good, and the mutual positioning of the support plate and the ring plate is accurately performed by fitting the arm and the groove. According to the eleventh aspect, the cord processing connected to the incandescent lamp can be appropriately performed. In other words, the passage of the cord can be secured, the appearance is not visible from the outside, and it is safe.

[0006]

EXAMPLES Next, examples of the present invention will be described, but they are merely specific examples adopted based on the present invention, and the present invention is limitedly interpreted based on matters peculiar to the examples only. However, the technical scope of the present invention should be determined on the basis of the matters shown in the claims or the matters substantially equivalent to the matters.

In the illustrated embodiment, an annular fluorescent lamp 2 is provided on the lower surface of a circular main body 1, a circular first semi-transparent cover 3 is provided on the lower surface of the fluorescent lamp 2, and an upper surface of the main body 1 is provided. A plurality of incandescent lamps 4 are provided so as to project outward from the incandescent lamp 4, and a second translucent cover 5 having a ring shape that covers the lower surface of the incandescent lamp 4 is provided. The second translucent cover 5 includes the fluorescent lamp 2 and the incandescent lamp 4. This is a ceiling-mounted luminaire having a partition 6 for partitioning the space between and. Then, the fluorescent lamp 2 and the incandescent lamp 4 are simultaneously turned on by a remote control transmitter or the like, or only one of them is turned on.

According to this structure, the illumination by the incandescent lamp 4 is semi-indirect illumination, whereby the downward light distribution is increased and the brightness is satisfied. The second translucent cover 5 that covers the lower surface of the incandescent lamp 4 reduces glare. Moreover, since the second semi-transparent cover 5 has the partition portion 6 (semi-transparent) for partitioning the fluorescent lamp 2 and the incandescent lamp 4, the first semi-transparent cover 3 and the second semi-transparent cover 3 at the time of illumination. The appearance of the semitransparent cover 5 is not shaded by the partition 6 or, conversely, too much interference light is transmitted through the partition 6. This is useful in luminaires where appearance is important.

A screw 8 is fixed to the lower surface of the main body 1 through a support 7 having a substantially V shape, and a knob 9 passing through the center hole of the first semitransparent cover 3 is screwed into the screw 8. The first translucent cover 3 is supported. The fluorescent lamp 2 is supported by a holder 10 protruding from the main body 1. As the first semi-transparent cover 3 and the second semi-transparent cover 5, those made of milky white synthetic resin, or those made of transparent synthetic resin with fine irregularities to make them semi-transparent are suitable. First translucent cover 3
Different translucent materials may be used, such as a milky white synthetic resin material for the second translucent material and a transparent synthetic resin semitransparent material with fine irregularities for the second translucent cover 5.

A gap 11 is provided at the boundary between the first semitransparent cover 3 and the second semitransparent cover 5 to reduce the temperature rise in the first semitransparent cover 3. The second semi-transparent cover 5 has an uneven pattern 12 located directly below the incandescent lamp 4.
By providing the above, it is possible to more effectively reduce the glare of the light of the incandescent lamp, and moreover, when the second semi-transparent cover 5 is mounted, alignment with the incandescent lamp 4 can be performed with the concavo-convex pattern 12 as a guide, so that the mounting is easy. You can do it.

As a specific example for providing a plurality of incandescent lamps 4 protruding outward from the upper surface of the main body 1, a circular support plate 13 provided at the center of the upper surface of the main body 1 radially protrudes to the outside of the main body 1. The incandescent lamp 4 is provided through the plurality of arms 14 and the socket 15. With this configuration, since the incandescent lamp 4 is provided outside the main body 1, the downward light distribution by the incandescent lamp 4 is increased and the brightness is satisfied. Also, the existing main body 1 can be used. In that case, it is not necessary to develop a new dedicated body, which contributes to a reduction in manufacturing cost.

The support plate 13 is fixed to the upper surface of the main body 1 with screws 16, and the inner end of the arm 14 is fixed to the lower surface side of the support plate 13 with screws 17. A ring plate 19 having a groove 18 for accommodating the arm 14 is provided on the outer periphery of the support plate 13. Ring board 1
9 is fixed between the arm 14 and the main body 1.
The arm 14 is fixed to the ring plate 19 by screwing the screw 20 into the boss 21 in the groove 18. A cord 23 connected to the incandescent lamp 4 is housed in the opening 22 on the lower surface of the arm 14. Since the support plate 13 and the ring plate 19 cooperate with each other to cover the upper surface of the main body 1, the appearance is good, and the mutual positioning of the support plate 13 and the ring plate 19 is accurately performed by fitting the arm 14 and the groove 18. Further, the cord processing connected to the incandescent lamp 4 can be appropriately performed. That is, the passage of the cord 23 can be secured, and it is not visible from the outside and has a good appearance and is safe. The cord 23 is connected to the socket 15 from the inside of the main body 1 through the inside of the arm 14.

The mounting means for indirectly attaching and detaching the upper end of the partition 6 to the main body 1 is a ring plate 1 provided on the upper surface of the main body 1.
The inward edge 25 of the upper end of the partition 6 is locked to the locking protrusion 24 provided on the outer periphery of the partition 9. At the time of locking, the second semi-transparent cover 5 is pushed up, and the locking protrusion 24 is passed through the notch 26 that is formed by cutting out a part of the edge 25,
From there, the second semi-transparent cover 5 is rotated to perform the operation. When the rotation is advanced, the locking convex portion 24 comes into contact with the downward stopper 27 provided on a part of the edge portion 25, and the locking is completed. At this time, since the concavo-convex pattern 12 of the second semi-transparent cover 5 comes directly under the incandescent lamp 4, the user only has to check the alignment between the concavo-convex pattern 12 and the incandescent lamp 4, which serves as a guide for the alignment and the locking work. Is easy. In addition, another stopper 28
Prevents reverse rotation of the second semi-transparent cover 5. That is, the second semi-transparent cover 5 can be rotated only in one direction when it is attached, and the second semi-transparent cover 5 can be removed only when it is rotated in one direction. The groove 1 in which the arm 14 is housed
The lower surface of the outer end of 8 protrudes to the outside of the ring plate 19, that is, in a high-level conception, the ring plate 19 has an outwardly protruding portion, so that the partition 6 in the second translucent cover 5 is formed.
The upper surface of the edge portion 25 at the upper end of the second contacting portion is projected, and the second semi-transparent cover 5 is locked in the upward direction without rattling. Thus, the second semi-transparent cover 5 has the ring plate 19
When the first semitransparent cover 3 is removed, the second semitransparent cover 5 does not drop carelessly, and the second semitransparent cover 5 can be prevented from being accidentally damaged. It is also appropriate from a safety point of view. If the ring plate 19 is not provided, the arm 14 that supports the incandescent lamp 4 may function as the protrusion. Further, when the first semi-transparent cover 3 is removed, the second semi-transparent cover 5 can be removed without removing the fluorescent lamp 2, which is convenient for cleaning the second semi-transparent cover 5 in which dust easily collects. This is because the inner diameter of the circumferential edge portion 25 is larger than the outer diameter of the large-diameter fluorescent lamp 2 on the upper side.

Next, the mounting means for allowing the upper end of the partition 6 to be directly attached to and detached from the main body 1 has an outer diameter of the main body 1 larger than that shown in the drawing, and the locking projection 24 is provided on the outer periphery of the main body 1. It may be assumed that a locking protrusion corresponding to the above is provided. The gap 11 provided at the boundary between the first semitransparent cover 3 and the second semitransparent cover 5 is a portion other than the convex portion 29 provided at the opening edge of the lower surface of the second semitransparent cover 5. That is, the convex portion 2
9 is in contact with the outer peripheral upper surface of the first semi-transparent cover 3, and the first semi-transparent cover 3 has a convex portion 29 on the second semi-transparent cover 5.
The first translucent cover 3 is attached to the first semi-transparent cover 3 for stability.

[0015]

As described above, according to the present invention, it is possible to improve the illuminance on the lower surface of an incandescent lamp in a lighting device that uses both a fluorescent lamp and an incandescent lamp.

[Brief description of drawings]

FIG. 1 is a half sectional view showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the upper portion.

FIG. 3 is an exploded perspective view of the same.

FIG. 4 is a sectional view of the arm portion.

[Explanation of symbols]

 1 Main body 2 Fluorescent lamp 3 First semi-transparent cover 4 Incandescent lamp 5 Second semi-transparent cover 6 Partition 11 Gap 12 Concavo-convex pattern 13 Support plate 14 Arm 18 Groove 19 Ring plate 22 Opening 23 Code

Claims (11)

[Claims] 1. A fluorescent lamp is provided on the lower surface of the main body, a first translucent cover is provided to cover the lower surface of the fluorescent lamp, an incandescent lamp is provided so as to project outward from the upper surface of the main body, and the lower surface of the incandescent lamp is covered. A luminaire having a second semi-transparent cover, the second semi-transparent cover having a partitioning part for partitioning the fluorescent lamp and the incandescent lamp. 2. The lighting device according to claim 1, wherein the upper end of the partition portion is provided with a mounting means capable of being directly or indirectly attached to and detached from the main body. 3. The lighting device according to claim 1, wherein a gap is provided at a boundary between the first translucent cover and the second translucent cover. 4. The lighting device according to claim 1, wherein the second translucent cover is provided with an uneven pattern located directly below the incandescent lamp. 5. The luminaire according to claim 1, wherein the incandescent lamp is provided via a plurality of arms radially protruding from a support plate provided at the center of the upper surface of the main body to the outside of the main body. 6. The luminaire according to claim 5, wherein a ring plate having a groove for accommodating the arm is provided on the outer periphery of the support plate. 7. The luminaire according to claim 6, wherein the partition means has an upper end capable of being attached to and detached from the ring plate. 8. The lighting device according to claim 5, wherein a cord to be connected to the incandescent lamp is housed in the opening of the lower surface of the arm. 9. A luminaire comprising a fluorescent lamp provided on the lower surface of a main body, and an incandescent lamp provided via a plurality of arms radially protruding from a support plate provided at the center of the upper surface of the main body to the outside of the main body. 10. The luminaire according to claim 9, wherein a ring plate having a groove for accommodating the arm is provided on the outer periphery of the support plate. 11. The luminaire according to claim 9, wherein a cord to be connected to the incandescent lamp is housed in the opening on the lower surface of the arm.