JP2000231825A - Fluorescent lamp luminaire for system ceiling - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fluorescent lamp luminaire for a system ceiling easily altered into a type having an increased number of lamp tubes and to provide a fluorescent lamp luminaire for a system ceiling, in particular, requiring no dedicated fixing brackets for the increase of lamp tubes. SOLUTION: A pair of ceiling beams 1 are provided and juxtaposed with each other along a ceiling surface. A support rack 2 is provided and mounted on the upper side of the ceiling beams 1. One box-shaped luminaire body 11 with opened bottom is provided and mounted on the upper-side middle part of the support rack 2. A reflector 7 with its bottom opened is provided and mounted on the lower side of the support rack 2. One straight-tube type fluorescent lamp 14 is provided and disposed on the lower side of the reflector 7. A pair of lamp sockets 9 are provided and mounted on the opposite end parts of the luminaire body 11 for detachably supporting the fluorescent lamp 14. A main engagement means 13 (more specifically, this is a general term for engagement pieces 13, 13) is provided on the upper side of the support rack 2 and detachably engages with the luminaire body 11 mounted on the upper side middle part of the support rack 2. Stand-by engagement means 13a, 13b are provided for detachably engaging a pair of juxtaposed luminaire bodies presenting the same structure as the luminaire body 11 with the luminaire body 11 on the middle part removed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluorescent lamp apparatus for a system ceiling including a pair of ceiling beams juxtaposed parallel to each other along a ceiling surface.

[0002]

2. Description of the Prior Art Fluorescent lighting fixtures for system ceilings are known which include a pair of ceiling beams juxtaposed parallel to one another along the ceiling surface. It is also known that when a new accessory such as a louver or a cover is added to a device that does not have the accessory, the accessory becomes darker.

[0003]

Conventionally, in the case of a multi-flash type with the addition of an accessory, a multi-flash type fixture body is fixed by using a fixing bracket for a multi-flash. However, it is burdensome to use a dedicated fixture for increasing the number of lights, which is disadvantageous in terms of cost and delivery time. SUMMARY OF THE INVENTION It is an object of the present invention to provide a fluorescent light fixture for a system ceiling, which can be easily increased in lighting type. In particular, it is an object of the present invention to provide a fluorescent light fixture for a system ceiling which does not require a special fixture for additional lighting.

[0004]

According to the present invention, there is provided a pair of ceiling beams juxtaposed parallel to each other along a ceiling surface. A support table is provided above each of the ceiling beams.
The apparatus includes a single box-shaped device main body having an open bottom surface mounted on an upper portion and a central portion of the support base. A bottom-opening reflector mounted below the support base; One straight tube fluorescent lamp is provided below the reflector. The apparatus includes a pair of sockets mounted on both ends of the apparatus main body, the lamp sockets detachably holding the fluorescent lamp. A main engaging means is provided on the upper side of the support base for detachably engaging the instrument main body mounted on the upper central portion. A pre-engaging means is provided for detachably engaging a pair of juxtaposed instrument bodies having the same structure as the instrument body except for the instrument body at the central portion.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A description will be given with reference to FIGS. 1 and 2 show a normal mode, and FIG. 3 shows a multi-flash mode. 1 to 3 according to the present invention includes a pair of ceiling beams 1 juxtaposed parallel to each other along a ceiling surface. A support 2 is provided above each ceiling beam 1. It has one box-shaped appliance main body 11 with an open bottom surface mounted on the upper and central part of the support base 2. A bottom-open reflector 7 is provided below the support 2. Reflector 7
And a single straight tube-type fluorescent lamp 14 disposed below. It has a pair of sockets mounted on both ends of the apparatus main body 11, and includes a lamp socket 9 for detachably holding the fluorescent lamp 14. On the upper side of the support base 2, there is provided main engaging means 13 (more precisely, generically referred to as engaging pieces 13) for detachably engaging the instrument body 11 mounted on the upper central portion. Preliminarily engaging means 13a, 13b for detachably engaging a pair of juxtaposed instrument bodies 11a, 11b having the same structure as the instrument body 11 except for the instrument body 11 at the central portion.

In the normal mode shown in FIGS. 1 and 2, one instrument body 11 is used. In the lighting mode of FIG. 3, two fixture bodies 11a and 11b are used. The original 11 is used as 11a, for example. 11b is newly added. 14a is a straight tube fluorescent lamp corresponding to the appliance main body 11a, and 14b is a straight tube fluorescent lamp corresponding to the appliance main body 11b. The straight-tube fluorescent lamp 14a in the normal mode is replaced with the straight-tube fluorescent lamp 14a.
4b may be diverted. 1 to 3 will be supplemented. The ceiling beam 1 is a part that also serves to support a ceiling material (not shown). Since the general-purpose ceiling beam 1 has an inverted T-shaped cross section, it is also called a T-bar. The support base 2 is formed by connecting a pair of support fittings 21 in a frame shape with a pair of auxiliary beams 3. The support 2 is detachably mounted on the top of the ceiling beam 11 using the feet 4a and the holding springs 4b. The reflector 7 has a lamp hole 5 and a spare lamp hole 6 for additional lighting. Reference numeral 8 denotes a set screw for fixing the reflection plate 7 to the support 2. The end of the straight tube type fluorescent lamp 14 is detachably attached to the lamp socket 9 through the lamp hole 5. Spare lamp hole 6 for additional lighting
Is a so-called knock hole which is closed with a closing lid but can be removed by appropriately tapping the closing lid. Reference numeral 10 denotes a lighting device in the appliance body 11. The main body of the main engagement means 13 is a pair of engagement pieces 13 (the same part number 13 is used for convenience of illustration). The distal end of the engaging piece 13 is detachably engaged with the receiving hole 12 formed near the open edge of the instrument body 11. The attachment / detachment is performed by appropriately bending the instrument body 11. The main body of the preliminary engagement means 13a is a pair of engagement pieces 13a.
The appliance body 1 when the leading end of the engagement piece 13a is in the multi-flash mode
1a is detachably engaged with the receiving hole 12a. The main body of the preliminary engagement means 13b is a pair of engagement pieces 13b. Engagement piece 13
b is detachably engaged with the receiving hole 12b of the instrument body 11b in the multi-flash mode.

[0007] Instrument body 11, receiving hole 12, main engagement means 13
· Engaging piece 13 and instrument body 11a · Receiving hole 12a · Preliminary engaging means 13a · Engaging piece 13a and instrument body 11b · Receiving hole 12
b, preliminary engagement means 13b, and engagement piece 13b are similar. Thus, the average position of the pair of engagement pieces 13 belonging to the main engagement means 13 is located at the center of the support 2 (more precisely, the center in the short direction of the support 2) and belongs to the preliminary engagement means 13a. The average position of the pair of engagement pieces 13a is closer to the right side (see FIG. 2).
And the average position of the pair of engagement pieces 13b belonging to the preliminary engagement means 13b is closer to the left side thereof. The device main body 11 in the normal mode straddles the left engagement piece 13a belonging to the preliminary engagement means 13a and the right engagement piece 13b belonging to the preliminary engagement means 13b. In the multi-flash mode, the appliance body 11a straddles the right engagement piece 13 belonging to the main engagement means 13. The device main body 11b in the multi-flash mode straddles the left engaging piece 13 belonging to the main engaging means 13. In the normal mode, one straight tube-type fluorescent lamp 1 belonging to the fixture body 11
4 for one lamp. At the time of multiple lighting mode, the appliance body 11a
· Two straight tube fluorescent lamps 14a and 14 belonging to 11b
This is for two lamps using b.

FIG. 3 shows a multi-flash mode, in which an accessory 15 is arranged below the reflector 7. The accessory 15 shown is a louver. Although it becomes dark due to the louver 15, the darkness is reduced by increasing the number of lamps (multiple lamps) by the straight tube fluorescent lamps 14a and 14b. In some cases, a modification from the normal mode in FIG. 2 to the multi-flash mode in FIG. 3 is performed on site. The multi-flash device is a fluorescent lamp device that can perform this, but the conversion from the normal mode to the multi-flash mode according to the present invention can be easily performed. Remove the original fixture body 11 / straight tube type fluorescent lamp 14 and use them as the fixture body 11a / straight tube type fluorescent lamp 14a, and add additional components to become the fixture body 11b / straight tube type fluorescent lamp 14b, It only has to be changed as shown in FIG. The embodiment of FIG. 4 will be described. The reflector 7 of FIG. 4 has a socket hole 50 and a spare socket hole 60 at both ends at the top. The spare socket hole 60 is a knock hole that can be appropriately punched. The lamp socket 9 of the appliance body 11 is inserted into the socket hole 50.
Enters. The spare socket hole 60 is provided for a multi-flash mode. The lamp hole 5 and the spare lamp hole 6 of FIG. 1 are changed to the socket hole 50 and the spare socket hole 60 of FIG. 4, and the same effect is obtained. Other items are the same as those in FIGS.

The embodiment of FIG. 5 will be described. In FIG. 1 and the like, a part of the support fitting 21 is cut and raised to form the engagement piece 13 and the like. Instead, it is effective to use another metal fitting 130 formed with the engagement piece 13 and the like as shown in FIG. Other items are the same as those in FIGS.

[0010]

According to the present invention, it is possible to obtain an inexpensive fluorescent lamp fixture for a system ceiling, which can be easily increased in lamp shape. In addition, since a dedicated fixture for increasing the number of lights is not required, and the trouble of preparing the same is not required, the increase in the number of lights can be achieved in a short period of time.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a fluorescent lamp fixture for a system ceiling according to the present invention.

FIG. 2 is an enlarged sectional view thereof.

FIG. 3 is a sectional view similar to FIG.

FIG. 4 is an exploded perspective view of a device showing another embodiment according to the present invention.

FIG. 5 is an exploded perspective view of a main part of a device showing another embodiment according to the present invention.

[Explanation of symbols]

1: ceiling beam, 2: support stand, 5: lamp hole, 6: spare lamp hole for additional lamp, 7: reflector, 8: set screw, 9: lamp socket, 11 / 11a / 11b: fixture body, 12: Receiving hole, 13: main engagement means, 13a / 13b: preliminary engagement means, 14 / 14a / 14b: straight tube fluorescent lamp, 15:
Accessories, 21: support bracket

Claims (1)

[Claims] A pair of ceiling beams arranged in parallel with each other along the ceiling surface, a support base mounted above each of the ceiling beams, and mounted above and at the center of the support base. A bottom-open box-shaped device main body, a bottom-open-type reflector attached to the lower side of the support, and a single straight tube-shaped member disposed below the reflector; A fixture socket comprising a fluorescent lamp, a pair of sockets attached to both ends of the fixture main body, the lamp sockets detachably holding the fluorescent lamp, and the fixture body attached to an upper central portion above the support base. A main engagement means for removably engaging the main body, and a pair of releasably engaging a pair of juxtaposed utensils having the same structure as the utensil main body except for the utensil main body at the central portion. For system ceiling characterized by having engaging means Fluorescent light fixtures.