JPH0238332Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] This invention relates to an edge-light type display lighting fixture that illuminates a display drawn with a fluorescent pen or the like.

[Background technology]

Conventionally, there are display lighting devices of this type as shown in FIGS. 11 to 14. This is a lamp 52 such as an aperture lamp along the edge 51a of the display panel 51 formed of a transparent acrylic plate or the like.
It has been established. The display panel 51 is attached to the lower end of the instrument body 53, and the lamp 52 is attached to the instrument body 53.
It is housed inside. The appliance main body 53 has a cover 54 for lamp replacement on the front side. As shown in FIG. 14, the lamp 52 is of a straight tube shape and has a light emitting part 52a along the longitudinal direction in a part of the circumferential direction.
The remaining portion of the circumferential surface has an inner surface formed as a reflective surface.
The lamp 52 has two terminal pins 52b at both ends. The socket 55 has a pin guide groove 55b which is bifurcated from the lamp pin attachment/removal opening 55a, and by inserting the terminal pin 52b from the lamp pin attachment/extraction opening 55a and twisting the lamp 52 by 90 degrees, the terminal pin 5 can be removed.
2b is attached to the pin connection position.

However, in this conventional structure, since the lamp pin attachment/detachment port 55a of the socket 55 faces the display panel 51 side, in order to make the lamp 52 attachable/detachable, it is necessary to
A large space is required between the socket 55 and the display panel 51. Therefore, when the lamp 52 is installed, the distance L between the lamp 52 and the edge 51a of the display panel 51 becomes long (for example, L≒
30mm), there is a problem of poor light efficiency.

As another conventional example, as shown in FIGS. 15 and 16, there is one in which the lamp 52 is supported by a support spring 60, and the socket 61 is not fixed to the instrument body 53. According to this, the lamp 52 can be brought closer to the display panel 51. However, the direction of the light emitting part 52a of the lamp 52 was not determined, and the 15th
As shown in the figure, the display panel 51 may be tilted. Therefore, light efficiency decreases.

[Purpose of invention]

This idea allows the lamp to be placed close to the display panel without making lamp replacement difficult, and the direction of the lamp can be fixed in the appropriate direction.
The purpose is to provide a display lighting device with high light efficiency.

[Disclosure of invention]

The display lighting device of this invention has a display panel that illuminates a drawn display with light incident from the edge, and a straight tube shape that has a light emitting part along the longitudinal direction in a part of the circumferential direction and has terminal pins at both ends. a lamp, and a pair of sockets that are provided so as to be able to hold the terminal pins of the lamps with the light emitting part facing the edge of the display panel, and in this holding position, the lamp pin attachment/detachment ports face the display panel side. The display lighting apparatus is provided with a socket base having the socket attached to the distal end and supported by the apparatus main body at the proximal end so as to be rotatable in the front-rear direction of the display panel.

According to the structure of this invention, the socket base is rotatable and the socket can be moved back and forth with respect to the display panel when attaching or detaching the lamp, so the lamp can be placed close to the display panel without making it difficult to attach or detach the lamp. can be done. Therefore, the light efficiency is good. Additionally, unlike conventional sockets in which the socket is not supported, the socket is attached to the device body via a socket base, so when the lamp is installed, the direction of the light emitting part is in the correct direction relative to the edge of the display panel. Fixed. For this reason as well, the light efficiency is good.

Embodiment An embodiment of this invention will be described based on FIGS. 1 to 6. This display lighting equipment has a display panel 1 that illuminates a drawn display with light incident from an edge 1a, a light emitting part 2a along the longitudinal direction in a part of the circumferential direction, and terminal pins (not shown) at both ends. The terminal pin of the lamp 2 is provided so that it can be held with the light emitting part 2a facing the edge 1a of the display panel 1, and in this holding position, the lamp pin attachment/detachment opening 3a (FIG. 6) In a display lighting device equipped with a pair of sockets 3 facing toward the display panel 1 side, the socket 3 is attached to the tip and supported by the device main body 5 at the base end so as to be rotatable in the front and back direction of the display panel 1. A stand 6 is provided. 3
0 is a ballast.

Lamp 2 and socket 3 are similar to those described above in conjunction with FIGS. 13 and 14. The display panel 1 is of a single-sided display type, and has a transparent plate 7 made of transparent acrylic resin or the like and a back plate 8 fitted into a U-shaped panel frame 9 (FIG. 2) that is open upward. The display panel 1 has its upper end fixed to the instrument body 5 with fixing screws 4. Back plate 8 is square 10 (5th
Figure) is printed. Note that, as shown in FIG. 7, a double-sided display panel 1' in which a back plate 8 is sandwiched between two transparent plates 7 may be used.

As shown in FIGS. 1 and 3, the instrument body 5
The front side is open, and the open part is closed with a cover 12. The cover 12 has an engaging piece 1 provided on the end cap 13 of the instrument body 5.
4 and the engagement groove 15 of the instrument main body 5, the engaged parts 16 and 17 are removably attached. The end cap 13 engages with the instrument main body 5 through an engaging piece 18 and an engaged portion 19, and is fixed to an end cap base 20 with thumb screws 21 as shown in FIG. The end cap stand 20 is made of an L-shaped metal plate and is attached to the top wall of the device body 5 with fixing screws 22.
It is fixed at

The socket base 6 is made of a steel plate, and is rotatably attached to the end cap base 20 by a support shaft 23 such as a rivet. The socket base 6 is provided with a cut-and-raised piece 6a, and the cut-and-raised piece 6a and the stepped portion 20a of the end cap base 20 form an angle regulating means 24.

Note that a power cord 25 is pulled out from one end cap 13. The appliance main body 5 is suspended by a hanging device (not shown) such as a chain attached to the ceiling wall.

According to this configuration, the light that enters the edge 1a of the light-transmitting plate 7 of the display panel 1 from the light-emitting portion 2a of the lamp 2 illuminates the display drawn on the light-transmitting plate 7 with a fluorescent pen or the like. The socket base 6 is rotatably supported by the end cap base 20, and as shown in FIG. This will be prevented.

When replacing lamp 2, tighten thumbscrew 21.
Loosen the end cap 13 and remove the cover 12.
Remove it (as shown in Figure 1). In this state, the socket base 6 is tilted forward as shown by the chain line in the figure.
The cut and raised piece 6a comes off the stepped portion 20a and rides on the inner surface of the end cap stand 20 due to the cut and raised piece 6a and the elastic piece shape of the end cap stand 20, and is in a press-contact state. This pressing force holds the socket base 6 at an arbitrary angle. In this state, the lamp 2 is attached to and removed from the socket 3, and the lamp is replaced.

In this way, the socket base 6 can be rotated so that the socket 3 can be rotated relative to the display panel 1 when the lamp is attached or detached.
Since the lamps can be moved back and forth, the lamp 2 can be attached to the display panel 1 without making it difficult to attach or detach the lamp.
can be placed close to. Therefore, light efficiency is good. Regarding the attachment and detachment of the lamp 2, the distance between the lamp 2 and the display panel 1 may be set to zero;
Considering the influence of heat on the display panel 1, it is desirable to leave a gap of about 5 mm.

Furthermore, unlike the conventional socket in an unsupported state, the socket 3 is attached to the appliance main body 5 via the socket base 6, so that when the lamp 2 is attached, the direction of the light emitting part 2a is aligned with the display panel. It is fixed in the proper direction with respect to the edge 1a of 1. For this reason as well, the light efficiency is good. In this embodiment, since the cut-and-raised piece 6a and the stepped portion 20a, which serve as the angle holding means 24, are provided, the direction of the socket 3 can be fixed even more reliably. Further, since the socket base 6 is held at an arbitrary angle by the angle holding means 24 at the time of lamp replacement, the lamp replacement work can be easily performed.

8 to 10 show other embodiments. In this example, the angle holding means 24' is comprised of a plurality of countersink-shaped recesses 27 provided on the end cap base 20' and an engaging protrusion 28 provided on the socket base 6' that engages with the recesses 27. It was formed.
The rest is the same as in the previous embodiment.

[Effect of idea]

In the display lighting device of this invention, the socket base is rotatable and the socket can be moved back and forth relative to the display panel when attaching or detaching the lamp, so the lamp can be placed close to the display panel without making it difficult to attach or detach the lamp. can be done. Therefore, the light efficiency is good. Additionally, unlike conventional sockets in which the socket is not supported, the socket is attached to the device body via a socket base, so when the lamp is installed, the direction of the light emitting part is in the correct direction relative to the edge of the display panel. Fixed. For this reason as well, the light efficiency is good.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of an embodiment of this invention when the lamp is replaced; Fig. 2 is a schematic front view of the entire structure;
Fig. 3 is a sectional view of the same in use, Fig. 4 is a side view thereof, Fig. 5 is an enlarged front view of the same, Fig. 6 is a perspective view of the socket base, etc., and Fig. 7 is a display. Sectional view of a modified example of the panel, No. 8
The figure is a cross-sectional view of another embodiment when the lamp is replaced.
FIG. 9 is a partial front view of the same, FIG. 10 is a sectional view of the same in use, and FIG. 11 is a front view of the conventional example.
FIG. 12 is a side view of the same, FIG. 13 is an explanatory diagram of lamp replacement, FIG. 14 is an explanatory diagram of the arrangement relationship between the lamp and the display panel, and FIG. 15 is a partial side view of another conventional example. FIG. 16 is a partial front view thereof. DESCRIPTION OF SYMBOLS 1...Display panel, 1a...Edge, 2...Lamp, 2a...Light emitting part, 3...Socket, 5...
Apparatus main body, 6... socket stand, 20... end cap stand, 24... angle holding means.

Claims (1)

[Scope of utility model registration request] A display panel that illuminates a drawn display with light incident from an edge, a straight tube-shaped lamp having a light emitting part along the longitudinal direction in a part of the circumferential direction and having terminal pins at both ends, and the light emitting part and a pair of sockets that are provided so as to be able to hold the terminal pins of the lamps while facing the edges of the display panel, and in this holding position, the lamp pin attachment/detachment ports face the display panel side. 1. A display lighting device comprising a socket base having a socket attached to a distal end and a base end supported by a device main body so as to be rotatable in the front-rear direction of the display panel.