JPS5919281Y2 - Direct-mounted lighting fixtures - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a fluorescent light fixture used for wall lighting and the like.

Recently, as shown in the cross section of FIG. 1, this type of lighting equipment has been developed with a lamp socket 1 and a reflector mounting device (not shown) projecting obliquely and a lighting device (not shown) built into the lighting device body 2. The reflector shade 4 is pivotally supported by a reflector attachment device so that the center of the lamp 3 supported by the lamp socket 1 that penetrates the lamp socket 1 becomes the rotation axis, They have come to be used primarily for school blackboard lighting, replacing the traditional hanging blackboard lights.

One of the reasons for this is that they are less eye-catching than hanging-type ones.

However, for that purpose, it is desirable to have a device with even less overhang from the ceiling surface 5, and with this configuration, the insertion hole 41 of the lamp socket becomes visible from the rear of the lighting device as the reflective shade rotates. , it was necessary to take measures to prevent light leakage from this hole to the rear.

Furthermore, the structure of the instrument body 2 also tends to be complicated.

The purpose of this invention is to eliminate these drawbacks and provide a structure that eliminates light leakage from the lamp socket insertion hole, significantly reduces the overall height of the fixture, and simplifies the configuration. It is characterized in that it is integrally formed as a fitting for the shade and the case, and the case is used as a light leakage prevention device.

An embodiment of this invention will be described in detail below with reference to FIGS. 2 to 4. 1 has mounting grooves (not shown) on both side legs.
3 is a straight tube fluorescent lamp, and 5 is a ceiling.

Reference numeral 6 denotes a mounting rack having a channel-shaped cross section, and a lighting component (not shown) is mounted on the lower surface 61 of the mounting rack.

Reference numeral 62 designates an embossed lamp that is machined on the back surface 63 of the mounting rack so that it can be mounted with a slight gap between the back surface 63 of the mounting rack and the ceiling surface 5.

Reference numeral 7 denotes an end plate fixed to both ends of the mounting rack 6, consisting of a side wall 71 and an upper side 72 and a lower side 73 bent in the same direction from the upper and lower edges of the side wall 71 so as to sandwich the mounting rack 6;
The upper side 72 is attached to the mounting rack, and the side wall 71 has a front protrusion 74 and a rear protrusion 75 that protrude forward and backward from the upper side 72 and the lower side 73, and the lamp socket 1
When the lamp 3 is attached to a fixture, a hole-shaped reflective shade attachment part 79 is machined in the front protrusion 74 of the side wall 71, which corresponds to the central axis of the lamp 3.

The lower side 73 has a screw hole 7 near the center as a case mounting part.
8, and the edges of the side walls of the upper side 72 and the lower side 73 on the side of the front protrusion 74 are bent inward so as to face each other to form lamp socket attachment parts 76 and 77, and the lamp socket 1 is fixed by inserting the mounting grooves (not shown) of both side legs into the lamp socket mounting parts 76 and 77.

Reference numeral 8 denotes a case, which is composed of a lower side 81, a side wall 82, an upper edge 83 bent from the upper end of the side wall 82 in the same direction as the lower side, and a tip edge 84 bent downward from the edge of the lower side 81.
Elongated holes 85 in the direction orthogonal to the longitudinal direction are machined near both ends of the plate, and the upper edge 83 is hung on the back surface 63 of the mounting rack, and the elongated holes 85 on the lower side are used to connect the screws that are the case attachment part on the lower side of the end plate. It is fixed in hole 78 with screw 9.

Reference numeral 4 denotes a reflective shade, which has a reflective shade end plate 42 and a mounting hole 43 on the end plate surface, and its cross-sectional shape is partially or entirely a parabola or an ellipse whose focal point coincides with the mounting hole 43. 43, it is pivotally attached to a reflective shade mounting hole 79 provided on the end plate side 71 by screws and nuts (not particularly shown).

41 is an insertion hole for the lamp socket.

Since this invention is constructed as described above, the lamp socket insertion hole 41 of the reflective shade is obstructed by the leading edge 84 of the case and cannot be seen from the rear of the lighting fixture.

With the reflective shade 4 set in its rotational position, move it to the tip edge 84 of the case.
By moving the case horizontally so that it is in close contact with the back of the reflective shade, light leakage can be completely prevented.

Since the lamp socket 1 projects horizontally from the end plate 7, the back surface of the reflector shade 4 approaches the ceiling 5, and the height of the entire luminaire is set approximately equal to the height of the reflector shade 4.

If the reflective shade 4 is formed into a thin shape as shown in the figure, the entire lighting device can be made thin as well.

The case 8 is temporarily fixed by hanging the upper edge 83 on the back surface 63 of the mounting rack, so that the case 8 can be easily installed, but such a structure can be freely disposed of.

Furthermore, since the case 8, lamp socket, and reflector 4 are all attached using the end plate 7, the number of parts can be consolidated and greatly reduced, resulting in a significant cost reduction effect.

[Brief explanation of drawings]

Figure 1 is a cross-sectional view of a conventional fluorescent light fixture, Figure 2
Figures 4 through 4 are diagrams showing embodiments of this invention.
The figure is a cross-sectional view, FIG. 3 is a perspective view of the end thereof, and FIG. 4 is an exploded perspective view of FIG. 3. In the diagram, 1 is a lamp socket, 4 is a reflective shade, 6 is a mounting rack,
7 is an end plate, 76 is a lamp socket attachment part, 78 is a case attachment part, 79 is a reflective shade attachment part, and 8 is a case.

Claims (1)

[Scope of utility model registration request] A mounting rack with built-in lighting components attached to the ceiling,
A hole-shaped reflective shade mounting part is provided in the front hollow part of the side wall that is fixed to both ends of the mounting rack and closes the end of the mounting rack, and the mounting rack is sandwiched between the upper and lower edges of the side wall. an end plate having an upper side and a lower side bent into a U-shape, and a lamp socket mounting portion bent so as to face from the side edges of the front projection on the upper side and the lower side; and a front projection of the side wall. a reflective shade that is rotatably supported by a hole-shaped reflective shade mounting part provided in the lamp socket and has a lamp socket insertion hole; A lamp socket is bent into an L-shape, and its lower side is attached to the case attachment part provided on the lower side of the end plate so as to be slidable toward the reflective shade, and the lower side is attached to the lower side of the mounting rack. and a case having a distal end edge which bends the lower end of the lower end downwardly to block light leakage from the lamp socket insertion hole.