JP2002023657A - Illuminator for display and its manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an illuminator for display which has an easily replaceable light source and prevents the destruction of the light source and to provide its manufacturing method. SOLUTION: The front aperture of an illuminator main body 10 which has its front opened and is formed like a rectangular parallelepiped is covered with: a square display unit 20 which has a width approximately equal to that of the illuminator main body 10 and has a height shorter than that of the illuminator main body 10; and a lamp holder unit 30 which is arranged along the upper edge of a display panel 21 of the display unit 20. The display unit 20 is provided with a light guide plate on the rear side of the display panel 21. The lamp holder unit 30 holds a cold cathode fluorescent lamp in a position facing the upper end edge of the light transmission plate 21. The lamp holder unit 30 is freely detachably attached to the illuminator main body 10 with the display unit 20 on the illuminator main body 10. Connection terminals connected to lead lines at both ends of the cold cathode fluorescent lamp are inserted and connected to connectors 50 and 50 arranged in the illuminator main body 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display lighting device and a method for manufacturing the same.

[0002]

2. Description of the Related Art In recent years, in various display lighting devices,
A light source using a cold cathode fluorescent lamp that is smaller and has higher luminance than a hot cathode fluorescent lamp has been provided. For example, as for a guide light which is a kind of display lighting equipment, a so-called high-brightness guide light using a cold cathode fluorescent lamp as a light source is provided.

As shown in FIGS. 65 and 66, this type of high-intensity guide light has a fixture body 10 'having a front opening.
A light guide plate type (or panel type) high-luminance induction device including a display unit 20 ′ attached to the front of the appliance body 10 ′ and a lamp holder unit 30 ′ holding the cold cathode fluorescent lamp 3. Lights are provided. Here, a lighting device 4 for lighting the cold cathode fluorescent lamp 3 and the like are housed in the appliance body 10 '. The display unit 20 ′ has a display panel 21 and a light guide plate 22 disposed on the rear surface side of the display panel 21, and the light from the cold cathode fluorescent lamp 3 disposed opposite to the upper end edge of the light guide plate 22. Light guide plate 2
While being guided to the lower edge of the light guide plate 22 by total reflection within the light guide 2, the light is incident on a light diffusion unit provided on the rear surface of the light guide plate 22, and of the light diffused by the light diffusion unit, light directed to the display panel 21 is displayed. It is emitted in front of 21. Further, the lamp holder unit 30 'includes a cold cathode fluorescent lamp 3, a reflector (not shown), and a lamp holder 31' as a unit main body holding these. By the way, the lead wires 83 of the harness 80 are soldered to both ends of the cold cathode fluorescent lamp 3 in the high-brightness induction lamp shown in FIGS. 65 and 66 (59 in FIG. 67 is soldered). ), And both ends to which the lead wires 83 are soldered are covered with caps 81 made of an insulating material. Therefore, at the time of construction or replacement of the lamp, the constructor holds the vicinity of the caps 81 at both ends of the cold cathode fluorescent lamp 3 with both hands. Here, the connector 82 of the harness 80 is connected to the connector 84 connected to the lighting device 4 via the electric wire 54 in the appliance main body 10 ′. The lamp holder unit 30 'is attached to the display unit 20', and the display unit 20 'to which the lamp holder unit 30' is attached is attached to the appliance body 10 '.

In the above-described high-brightness induction lamp, the effective light emission length L1 of the cold cathode fluorescent lamp 3 and the right and left sides of the light guide plate 22 are increased as shown in FIG. The width L2 in the direction is substantially the same.

Further, as shown in FIG. 69, a lamp holder 57 for arranging the cold cathode fluorescent lamp 3 on the rear side of a display panel (not shown) in the fixture body 10 'is used as a high-intensity guide lamp. There is also provided an internally illuminated high-brightness induction lamp that is disposed and emits the light of the cold cathode fluorescent lamp 3 disposed in the apparatus main body 10 'directly to the front of the display panel. In this type of high-brightness induction lamp, the vicinity of both ends of the cold cathode fluorescent lamp 3 described above is held by hand and the lamp holder 57 in the appliance body 10 'is held.
The cold cathode fluorescent lamp 3 is attached to the
2 is connected to the connector 84 (FIG. 70) provided on the instrument body 10 side.
Connection). Here, the connector 84 is connected to the lighting device 54 via the electric wire 54.

A high-brightness induction lamp having a display panel on both sides is provided with two cold cathode fluorescent lamps 3 as shown in FIG. 71, so that the vicinity of both ends of the cold cathode fluorescent lamp 3 is held by hand. After being mounted on the lamp holder 57, the lead wires 83 of the harness 80 are wired by a plurality of wire lining tools 58.

[0007]

However, in the above-described conventional high-intensity induction lamp, since the cold cathode fluorescent lamp 3 to which the harness 80 is connected is directly handled by the builder, the cold cathode fluorescent lamp 3 is damaged. There was a fear that it would. Moreover, the harness 8
After the connector 82 of No. 0 is connected to the connector 84 of the appliance body 10 ′, post-processing of the electric wires 83 and 54 is necessary. However, post-processing of the electric wires 83 and 54 differs depending on the installer, and the leakage current increases. There was fear.

When the display unit 20 'to which the lamp holder unit 30' is attached is attached to the fixture body 10 ', the display unit 20' is removed from the fixture body 10 'when the cold cathode fluorescent lamp 3 is attached or replaced. Since the display unit 20 'is relatively heavy, the display unit 20' to which the lamp holder unit 30 is attached may fall. For this reason, it is conceivable to provide a fall prevention mechanism for the display unit 20 'in the appliance body 10'. However, if the fall prevention mechanism is provided, there is a problem that workability is deteriorated.

When the display unit 20 'to which the lamp holder unit 30' is attached after the connector 82 and the connector 84 are connected is attached to the appliance main body 10 ', each pair of the connectors 82 and 84 is connected. Since it is difficult to perform a wiring process for separating the high-voltage line and the low-voltage line in the electric wires 83 and 54, there is a problem that the leakage current increases.

Further, in the above-described light guide plate type high-brightness induction lamp, the effective light emission length L1 of the cold cathode fluorescent lamp 3 is substantially the same as the width L2 of the light guide plate 22, so that the width of the lamp holder unit 30 is reduced. There was a problem that the size was larger than that of the main body 10 'and the appearance was not clear.

The electric wires 83 of the harness 80 are connected to both ends of the cold cathode fluorescent lamp 3 by soldering. However, in the case of the fixing method using solder, the cold cathode fluorescent lamp 3 needs to be aged. was there.

In the above-described light guide plate type high-brightness induction lamp, the cold cathode fluorescent lamp 3 is disposed on the inner peripheral surface side of the reflector, and substantially the entire outer peripheral surface of the reflector is made of a synthetic resin molded product. Since the lamp is fixed by the lamp holder 31 ′, the heat radiation is poor, and the luminous efficiency of the cold cathode fluorescent lamp 3 is reduced as the temperature of the cold cathode fluorescent lamp 34 rises.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a display lighting apparatus capable of easily replacing a light source and preventing damage to the light source, and a method of manufacturing the same. is there.

[0014]

According to a first aspect of the present invention, a lighting device for lighting a light source is provided in a rectangular parallelepiped appliance body having a front opening, and a rectangular display unit having a light guide plate is provided on the front surface of the appliance body. A display lighting device provided along with the light guide plate and facing the end face of the light guide plate, wherein the lighting device turns on the light source to illuminate a display panel, and the display unit holds the light source and holds the display unit. A display unit having a light guide plate having a relatively heavy weight at the time of construction or replacement of a light source at the time of installation or replacement of a light source. The lamp holder unit holding the light source can be attached and detached without removing the light source from the fixture body. Since it handle Rukoto without lamp holder unit, it is possible to prevent breakage of the light source it becomes easy replacement of the construction and the light source. Further, since there is no need to attach and detach the display unit to and from the instrument body when exchanging the light source, there is no danger of the display unit dropping, and there is no need to provide a means for preventing the display unit from falling. High safety even without drop prevention means.

According to a second aspect of the present invention, in the first aspect of the present invention, the lamp holder unit is removable by being moved in a direction substantially perpendicular to the display surface of the display unit. The lamp holder unit can be attached and detached by utilizing the space that has been widened, and the attachment and detachment of the lamp holder unit is easy and the operability is good. In addition, the replacement of the lamp holder unit is facilitated.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the lamp holder unit includes a connection terminal directly connected to a connector arranged on the appliance body. The connection structure between the connection terminal of the holder unit and the connector arranged on the fixture body side can be simplified, and the structure for holding the lamp unit in the fixture body can be simplified, so that the cost can be reduced. Moreover, since it is not necessary to connect the light source and the connector provided on the appliance body with electric wires, the leakage current of the electric wires can be reduced when the lighting device turns on the light source in a high-frequency lighting system.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the connector is arranged in the instrument body so as not to project from the instrument body, and the connection terminal projects from the lamp holder unit and is inserted into the connector. Because it is connected, it is not necessary to protrude the terminal from the appliance body side equipped with a power supply, etc., and it is possible to increase safety, especially when the lighting device turns on the light source by a high frequency lighting method. it can.

According to a fifth aspect of the present invention, in the fourth aspect of the present invention, the connection terminal protrudes from a portion near both ends in the longitudinal direction, and the lamp holder unit has an operating recess for removing from the fixture body in the longitudinal direction. Are provided on both side surfaces of the connector, and the electric shock prevention legs overlapping with the connection terminal in the longitudinal direction are protruded from a portion between the operation concave portion and the connection terminal. It is possible to prevent the driver or coin for removal from coming into contact with the connection terminal by the electric shock prevention leg, and the electric shock can be prevented, so that the safety is high.

According to a sixth aspect of the present invention, in the third aspect of the present invention, the light source is a straight tube type lamp, and the connection terminal is connected to the light source held by the lamp holder unit in the lamp holder unit. Since the projection protrudes from a portion inside the portion corresponding to both ends, the difference between the width of the lamp holder unit in the direction along the longitudinal direction of the light source and the width of the display unit can be reduced,
The appearance is improved.

According to a seventh aspect of the present invention, in the first aspect of the present invention, the lamp holder unit comprises a cold cathode fluorescent lamp as the light source, a reflector surrounding the cold cathode fluorescent lamp, and both ends of the cold cathode fluorescent lamp. A pair of connection terminals respectively connected to the respective lead wires provided and directly connected to the connectors arranged on the appliance body, a unit body made of a synthetic resin in which the cold cathode fluorescent lamp and the reflection plate are housed, and a unit body. Since it includes a cold cathode fluorescent lamp and a pair of synthetic resin holder blocks that support the reflection plate and the connection terminal, the lamp holder is compared with a conventional lamp holder unit in which a harness is connected to a cold cathode fluorescent lamp. The configuration of the unit can be simplified.

According to an eighth aspect of the present invention, in the invention of the seventh aspect, since the lamp holder unit is provided with a heat radiation space above the cold cathode fluorescent lamp in the unit main body, the lamp holder unit can be directly mounted on the ceiling. Even in this case, the temperature rise of the cold cathode fluorescent lamp can be suppressed, and a decrease in the luminous efficiency of the cold cathode fluorescent lamp can be suppressed.

According to a ninth aspect of the present invention, in accordance with the seventh aspect of the present invention, since the unit main body has a heat radiating hole formed at a position above the cold cathode fluorescent lamp, the unit body is generated by the cold cathode fluorescent lamp. The heat can be efficiently radiated, the temperature rise of the cold cathode fluorescent lamp can be suppressed, and the decrease in the luminous efficiency of the cold cathode fluorescent lamp can be suppressed.

According to a tenth aspect of the present invention, in the eighth aspect of the invention, the lamp holder unit is provided with a thin lamp supporting portion for supporting both ends of the cold cathode fluorescent lamp, so that heat radiation is improved. As a result, the temperature rise of the cold cathode fluorescent lamp can be suppressed, and a decrease in the luminous efficiency of the cold cathode fluorescent lamp can be suppressed.

According to an eleventh aspect of the present invention, there is provided the method of manufacturing a display lighting device according to the seventh aspect, wherein the pair of holder blocks are formed at a position interval supporting the connection terminal of the cold cathode fluorescent lamp to a runner at the time of molding. The unit is formed integrally with the unit body so as to be connected by the unnecessary portion to be formed, and a molded product including the pair of holder blocks, the unit body, and the unnecessary portion is placed on a pallet for assembly and connected. A cold cathode fluorescent lamp provided with terminals, a reflecting plate, characterized in that the unnecessary portion is cut off and incorporated into the holder block in the order of the unit body separated from the holder block, and a cold cathode fluorescent lamp provided with connection terminals, a reflecting plate, The unit body can be assembled to the pair of holder blocks from one direction, facilitating assembly work, and the unit body and the pair of holder blocks are integrally formed Since performing assembled molded article is placed on the pallet, such as lost or placement error of the holder blocks can be prevented, it is possible to reduce the cost can improve the working efficiency.

According to a twelfth aspect of the present invention, there is provided a method of manufacturing a display lighting device according to the seventh aspect, wherein a mold gate for integrally molding the unit main body and the pair of holder blocks is formed on the unit main body. A central portion of the molding section and each holder block molding section for molding both holder blocks are respectively provided, and a resin reservoir is provided on a runner that communicates the main body molding section and each holder block molding section, and the pair of holder blocks are provided. Molded integrally with the unit body to be connected by unnecessary parts formed on the runner at the position interval supporting the connection terminal of the cold cathode fluorescent lamp,
A molded product comprising the pair of holder blocks, the unit body and the unnecessary portion is placed on a pallet for assembly, and a cold cathode fluorescent lamp provided with connection terminals, a reflector, and the unnecessary portion are separated from the holder block. It is characterized in that it is assembled in the holder block in the order of the separated unit main body, and the cold cathode fluorescent lamp with the connection terminal, the reflector, and the unit main body can be assembled to the pair of holder blocks from one direction, facilitating the assembly work In addition, since the molded product obtained by integrally molding the unit body and the pair of holder blocks is mounted on a pallet and assembled, it is possible to prevent the holder blocks from being lost or misplaced, thus improving work efficiency. And cost can be reduced. In addition, since a resin reservoir is provided in a runner that communicates the main body molding section and each holder block molding section, a weld line can be prevented from being generated in the unit main body and the holder block, and the unit main body and the holder block can be prevented from forming. Appearance and mechanical strength can be enhanced.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In this embodiment, FIGS.
The following is an example of a high-intensity guide light (hereinafter, abbreviated as a guide light) having the configuration shown in FIG. Hereinafter, the high-luminance guide light of the present embodiment will be described with reference to FIGS. 1 to 35.

As shown in FIGS. 1 to 5, the guide light according to the present embodiment has a rectangular parallelepiped appliance body 10 having a front opening.
Rectangular (in this embodiment, square) display panel 21
A display unit 20 that covers most of the front opening of the appliance body 10 and a remaining portion of the front opening of the appliance body 10 that is not covered by the display unit 20 and that has the straight-tube cold-cathode fluorescent lamp 3 as a light source. Display unit 20 so as to cover
And a lamp holder unit 30 disposed along the upper edge of the lamp holder unit.

Hereinafter, the instrument body 10 will be described first.

A lighting device 4 for lighting the cold-cathode fluorescent lamp 3 in a high-frequency lighting system is provided in the appliance body 10. Further, an emergency power supply block 6 having a storage battery as an emergency power supply for supplying power to the lighting device 4 when a commercial power failure occurs is provided in the appliance body 10. Here, the lighting device 4 is connected to a terminal block 7 connected to a commercial power supply via an electric wire (not shown), and also connected to the emergency power supply block 6 via two electric wires 52. Usually, the cold cathode fluorescent lamp 3 is turned on by being supplied with a commercial power supply, and the power is supplied by a storage battery to turn on the cold cathode fluorescent lamp 3 when the commercial power supply goes out.

The appliance body 10 is made of a synthetic resin, and has a cutout knockout portion which forms a power supply hole for inserting an electric wire (not shown) from a commercial power supply connected to the terminal block 7 into the appliance body 10. 11 and 11 are formed on the upper wall and the rear wall, respectively. The rear wall of the instrument body 10 is formed with a releasable knockout portion 13 ′ that forms a mounting hole through which a mounting screw used for directly attaching to the wall surface is inserted. In addition, the upper wall of the instrument body 10 has two releasable knockout portions 13 and 13 that form a mounting hole for inserting a mounting screw used when directly attaching to the ceiling surface.
Are formed apart from each other in the left-right direction. Therefore, when the apparatus main body 10 is mounted on a ceiling surface, on a wall surface, or the like, by forming a power supply hole and a mounting hole as necessary, a power supply hole into which a power line is not inserted and a mounting hole through which a mounting screw is not inserted are generated. Can be prevented, and the aesthetic appearance can be enhanced. In addition, a metal reinforcing bracket 8 is disposed in the front of the rear wall in the fixture body 10, and the lighting device 4 is connected to a screw-type ground terminal (not shown) provided on the reinforcing bracket 8. They are connected via electric wires (not shown).

An L-shaped engagement member, which is substantially parallel to the lower wall of the device main body 10 and protrudes from the rear surface of the panel case 23 of the display unit 20, is provided on each inner surface at the front of both side walls of the device main body 10. The lower edge of the mating piece 24 contacts the upper surface and the display unit 20
A restricting piece 18a for restricting downward movement of the engaging piece 24 is substantially parallel to the front edge of the instrument body 10 and is formed integrally and continuously from the front edge of the restricting piece 18a. Two L-shaped locking pieces 18 each comprising an overlapping holding piece 18b protrude.

On the other hand, as shown in FIG. 6, the display unit 20 is provided with a display panel 21 made of an acrylic resin having a light-transmitting property on which a symbol for guiding to the evacuation opening is written, and a display panel 21 on the rear side. A light guide plate 22 made of a transparent acrylic resin for guiding the light of the cold cathode fluorescent lamp 3 to the display panel 21
A reflection sheet 25 disposed on the rear surface of the light guide plate 22;
Display panel 21, light guide plate 22, and reflection sheet 25
And a panel case 23 made of synthetic resin. Here, the front of the upper part of the light guide plate 22 is
The two positioning projections 22a, 22a are projected, and the positioning projections 22a, 22a
(Not shown) into which a hole is inserted. Further, the panel case 23 is formed of the same material as the instrument body 10, and the above-mentioned L-shaped engaging pieces 24 are respectively provided on the left and right ends on the rear surface of the panel case 23 by two in the vertical direction. It is protruding. In the display panel 21, the color of the hatched portion in FIG. 3 is green. Further, the light guide plate 22 is formed so that the thickness becomes thinner toward the lower side in the vertical direction.

The panel case 23 has a left-right width substantially equal to the left-right width of the appliance body 10 and has a square mounting base 23a having a vertical width slightly smaller than the vertical width of the appliance body 10.
And a holding frame 23 that is continuously and integrally protruded forward along three sides excluding the upper side in a peripheral portion of the front surface of the mounting base 23a.
b.

Guide grooves 23c for slidably holding the display panel 21 are formed on the inner surfaces of the holding frame 23b at the left and right ends. on the other hand,
The display panel 21 has side pieces 21a protruding rearward from both left and right end edges, and a guide rib 21b protruding from the outer surface of each side piece 21a to be slidably introduced into the guide groove 23c. I have. Therefore, the display panel 21 is held by the panel case 23 by introducing the guide ribs 21b into the guide grooves 23c from above the holding frame 23b of the panel case 23 and sliding the guide ribs 21b downward. Here, the movement of the display panel 21 in the downward direction, the front-back direction, and the left-right direction is regulated by the panel case 23. Accordingly, the display unit 20 can appropriately replace the display panel 21 by preparing a plurality of types of display panels having different symbols described in advance.

In order to attach the display unit 20 to the instrument body 10, the position of the instrument body 10 and the display unit 20 in the left-right direction is set such that the rear surface of the panel case 23 abuts on the front edges of both side walls of the instrument body 10. The lower surface of the display unit 20 is positioned higher than the lower surface of the instrument body 10 so that the engagement pieces 24 corresponding to the locking pieces 18 protruding from the inner surfaces of both side walls of the instrument body 10 are shifted upward. While being displaced upward, the display unit 2 is brought into contact with the rear surface of the panel case 23 against each front edge of both side walls of the instrument body 10.
0, the lower edge of each engagement piece 24 comes into contact with the upper surface of the restriction piece 18a of each locking piece 18 and the front surface of each engagement piece 24 Holding piece 1
8b, the display unit 20 is in contact with the rear surface of the device main body 1.
0, the display unit 2 for the instrument body 10
The movement of 0 in the left-right direction, the downward direction, and the front-back direction is regulated. In the state where the display unit 20 is temporarily held in the appliance body 10 in this manner, a gap slightly smaller than the vertical width of the lamp holder unit 30 is formed between the plane including the upper surface of the appliance body 10 and the upper edge of the display panel 21. It is formed. The lamp holder unit 30 includes the display unit 2
In a state in which 0 is attached to the instrument body 10, it is detachably attached to the front face of the instrument body 10 so as to close this gap and cover the front opening of the instrument body 10 together with the display unit 20. To remove the display unit 20 from the fixture body 10, the lamp holder unit 30 is
With the display unit 20 removed from the
What is necessary is just to slide to the position where the 8 and the holding piece 18b do not overlap, and remove it forward. The width of the holding frame 23b is
It is smaller than the width (up and down width) of the lamp holder unit 30.

As shown in FIGS. 13 to 20, the lamp holder unit 30 is integrally formed with a front plate 31a located on the front side of the fixture body 10 and continuously from the upper end edge of the front plate 31a toward the rear. An upper plate 31b, a pair of side plates 31c projecting rearward from both side edges of the front plate 31a, and a metal (for example, aluminum) reflecting plate projecting downward at both ends of the upper plate 31b. A lamp holder 31, which is a unit body made of synthetic resin, is formed integrally with a pair of support stands 35, 35 for supporting the cold cathode fluorescent lamp 3 and the cold cathode fluorescent lamp 3. In the lamp holder unit 30, both ends of the cold-cathode fluorescent lamp 3, which is a straight tube lamp, are supported by a pair of supports 35 of the lamp holder 31 (see FIGS. 30 and 31). The connection terminals 36, 36 respectively connected to the lead wires 3b, 3b protruding from both ends are held by holder blocks 40, 40 made of synthetic resin which are detachably connected to the support bases 35, 35 from the lower surface side. It protrudes rearward of the lamp holder 31. The reflection plate 32 has a U-shaped cross section with an open lower surface, and is supported by the support bases 35 and 35 so as to surround the cold cathode fluorescent lamp 3. Here, the cold cathode fluorescent lamp 3 and the reflecting plate 32 are connected between the lamp holder 31 and the holder blocks 40, 40 by connecting the pair of holder blocks 40, 40 to the support bases 35, 35 of the lamp holder 31. Will be retained.

In short, the lamp holder unit 30 is
The connection terminals 36, 36 respectively protrude rearward from both ends in the longitudinal direction. Here, the lead wire 3b of the cold cathode fluorescent lamp 3 is formed by connecting the lead wire 3b and the connection piece 36b of the connection terminal 36 to a U-shaped splice band 37 (FIG. 1).
6) (see FIG. 34). Further, the lamp holder unit 30 holds the cold cathode fluorescent lamp 3 at a position where the cold cathode fluorescent lamp 3 is arranged at a position facing the upper end edge of the light guide plate 24 in a state of being attached to the fixture body 10. Lamp holder 3
1 is a synthetic resin as described above,
And the same color as the panel case 23.

The reflecting plate 32 has a U-shaped cross section and extends from each end edge of the main piece 32a as shown in FIG.
2b and 32c are extended, respectively, and the extension piece 32b closer to the front plate 31a than the extension piece 32c farther from the front plate 31a of the lamp holder 31 is projected from the main piece 32a. Are extended, and the extension piece 32b is
It is designed to overlap with the front of the upper part. Further, the panel case 23 is formed with a reflection groove 23d where the extension piece 32c faces at a position above the upper surface of the light guide plate 22, so that the light loss of the cold cathode fluorescent lamp 3 can be reduced. it can.

The holder block 40 is shown in FIGS.
As shown in FIG. 7, a U-shaped support portion 41 for supporting the end of the cold cathode fluorescent lamp 3, fixed pieces 42 and 43 extending from the distal ends of both legs of the support portion 41, and a connection terminal 36 are provided. A base 44 on which a slit 44a to be inserted is formed;
4 to prevent electric shock.

Here, the cold cathode fluorescent lamp 3
Table 46 having a holding recess 46b for holding the end of
Is protruding. The fixed piece 42 has two fixed pieces 4.
When the base plates 2 and 43 are inserted into the support base 35 from below the lamp holder 31, a coupling claw 42 a that protrudes from a locking hole 35 b (see FIGS. 15 and 16) provided in the support base 35 is protruded. . The coupling claw 42a is inclined so that the amount of protrusion from the fixing piece 42 becomes smaller as it approaches the tip of the fixing piece 42. At the time of assembling, after the fixing piece 42 is bent,
Since a click sound is generated when the connecting claw 42a is locked in the locking hole 35b, it can be confirmed by a sound that the holder block 40 has been connected to the lamp holder 31.

When the holder block 40 is assembled, the reflector 32 is inserted between the fixed pieces 42 and 43 in the direction of arrow B in FIGS. 26 and 27 from above in FIGS. 22 and 26. Insertion grooves 42b and 43b (see FIG. 27) for guiding the reflection plate 32 to a fixed position in the support portion 41 are formed on the opposing surfaces of the fixing pieces 42 and 43. Can be easily installed.

The connection terminal 36 is shown in FIG. 28 and FIG.
As shown in FIG. 9, one end in the longitudinal direction is bent to form a bent piece 36.
a is formed, and a narrow connecting piece 36b extends from the center of the distal end edge of the bent piece 36a. Furthermore, connection terminal 3
6, a dowel 3 which is a pair of press-fit projections is provided on one surface in the thickness direction.
6c and 36c are protruded, and arrow Z in FIG.
Of the base 44 of the holder block 40 in the direction of
a. That is, the slit 44a of the base 44
The dowels 36c, 36c are pressed into the slits 44a along both side edges of the projection 43c (see FIG. 23) protruding from the inner peripheral surface of the slit 43a. Therefore, after the connection terminal 33 is inserted into the slit 44a of the base 44, the dowels 36c, 36c are pressed against the inner peripheral surface of the slit 44a, so that the connection terminal 36 is fixed to the base 44. Positioning of the lamp holder unit 30 in the mounting / detaching direction (the vertical direction in FIG. 23) is performed. Also, the connection terminal 36
On both side edges in the width direction, auxiliary pieces 36d are protrudingly provided.
The connection terminal 36 is inserted into the positioning groove 44d formed continuously with the position 4a, whereby the connection terminal 36 is positioned in the mounting / detaching direction of the lamp holder unit 30. Therefore, the connection terminal 36 can be prevented from falling out of the slit 44a of the base 44 when the lamp holder unit 30 is attached to and detached from the fixture body 10, and the cold cathode fluorescent lamp 3
Can be prevented from being applied to the lead wire 3b.
The auxiliary piece 36d is a carrier part necessary for molding the connection terminal 36 with a progressive die.

The cold cathode fluorescent lamp 3 is fragile and fragile. However, in this embodiment, as shown in FIG. 31, a thin rib protruding from a protruding base 46 provided on the support portion 41 of the holder block 40 is used. Since the end of the cold cathode fluorescent lamp 3 is sandwiched between 46a and the thin rib 35d provided on the support 35, the load on the cold cathode fluorescent lamp 3 is reduced by the deformation of the holder block 40 and the support 35. The cold cathode fluorescent lamp 3 can be absorbed, the stress applied to the cold cathode fluorescent lamp 3 can be reduced, and the cold cathode fluorescent lamp 3 can be fixed without being damaged within the component tolerance range and the assembly tolerance range.

By the way, in the guide light of this embodiment, FIG.
As shown in FIG. 5, the width L2 of the light guide plate 22 in the left-right direction is slightly larger than the effective light emission length L1 of the cold cathode fluorescent lamp 3, so that the width of the lamp holder unit 30 in the left-right direction and the display unit
Since the width in the left-right direction of 0 is set to be the same, the appearance of the entire guide light can be enhanced. Here, the light guide plate 22
The width L2 of the cold cathode fluorescent lamp 3 in the left-right direction is set to the effective emission length L1
If it is set to be slightly larger than this, the light intensity becomes insufficient at both ends of the display panel 21 in the left-right direction, and the brightness becomes small.
In the present embodiment, the support piece 41 a that supports the end of the cold cathode fluorescent lamp 3 in the holder block 40 is attached to the cold cathode fluorescent lamp 3.
Notch 4 for guiding light near the end of the light guide plate 22 to the light guide plate 22
1b, and a guide surface 4 for guiding the light of the cold cathode fluorescent lamp 3 to the end of the light guide plate 22 on the surface facing the cutout portion 41b.
1a (see FIG. 22), the light of the cold cathode fluorescent lamp 3 is guided as shown by an arrow in FIG.
Insufficient light from the cold cathode fluorescent lamp 3 to both right and left ends of the display panel 2 can be prevented, and the uniformity of the luminance of the display surface of the display panel 21 can be increased.

The lamp holder unit 30 includes a support 35
On the rear surface of the upper part of the device, guide pieces 33, 33 having an L-shaped cross section and arranged along the inner surfaces of the left and right corners in the upper part of the instrument body 10 are continuously and integrally protruded rearward. I have. Further, the base 44 of the holder block 40 described above.
Are connected to the support base 35 of the lamp holder 31 and below each of the guide pieces 33, 33, each terminal 3
Each connection terminal 36, 36
The electric shock prevention legs 45, 45 overlapping with are provided. In short, the electric shock prevention leg 45 protrudes from a portion closer to the side plate 31c of the lamp holder 31 than the connection terminal 36.
Here, the projecting dimension of the electric shock prevention leg 45 from the rear surface of the lamp holder 31 is set to about half of the guide pieces 33, 33.

On the other hand, inside the upper part of both side walls of the fixture body 10, the connection terminals 3 of the lamp holder unit 30 are connected to the lighting device 4 via electric wires 53, 53, respectively.
6 and 36 are connectors 50 and 50 inserted and connected from the front.
Is arranged. Here, each connector 50 has a terminal insertion opening 50b opened at both longitudinal end surfaces of an insulating cover 50a formed in a rectangular parallelepiped shape.
A flag-shaped terminal (not shown) in which the connection terminal 36 inserted from the terminal insertion port 50b is connected to a portion corresponding to the terminal insertion port 50b is accommodated in 0a. put it here,
Each connector 50 is attached to the appliance body 10 so that gaps 51, 51 into which the above-described electric shock prevention legs 45 are inserted from the front are formed between the cover 50a and each side wall of the appliance body 10. . Accordingly, it is not necessary to provide the lamp holder unit 30 with the harness 80 as in the prior art, and as shown in FIG.
The connector 50 and the lighting device 4 are connected in the appliance main body 10 by providing the lead wire holding portion 14 for holding the electric wires 53 in a separated state so as not to generate a leakage current, at the appropriate place. Since the wiring position of the electric wire 53 can be standardized, there is no need to lengthen the electric wire 53 extra in consideration of workability and the like, and the electric wire 53 can be laid before shipping from the factory. There is no need for a trader to perform wiring processing when mounting the lamp holder unit 30, which facilitates the construction and prevents the leakage current from differing by the installer. Here, a pair of electric wires 53, 53 for connecting each connector 50 and the lighting device 4 are provided.
Is that the electric wire on the low voltage side is longer than the electric wire on the high voltage side (in FIG. 4, the electric wire 53 connected to the connector 50 on the left side is the electric wire on the low voltage side).
Since the distance between 53 can be made relatively large, leakage current can be reduced. In addition, the appliance body 10 provided with a power supply
The terminal can be prevented from protruding from the terminal, and safety can be improved.

By the way, when the lamp holder unit 30 is attached and detached, the connection terminal 36 cannot be seen by the installer. However, in the lamp holder unit 30, the protrusion of the guide piece 33 is set to be larger than the protrusion of the connection terminal 36. Therefore, when the lamp holder unit 30 is attached to the appliance body 10, before the connection terminal 30 is connected to the connector 50, first, the distal end of the guide piece 33 moves along the inner peripheral surface of the appliance body 10 (in addition, The distal end of the guide piece 33 has a chamfered surface facing the upper wall and the side wall of the instrument body 10 and is thinner than the base end.) Then, the proximal end of the guide piece 33 is attached to the instrument body. 10 are guided along the upper wall and the side wall of the connector 10, and the connection terminals 36 are guided by guide surfaces 50 c provided around the terminal insertion opening 50 b in the insulating cover 50 a of the connector 50.
Is guided, the connection between the connection terminal 36 and the connector 50 can be performed smoothly, and the connection between the connection terminal 36 and the connector 50 can be performed reliably and safely. Here, in the guide light of the present embodiment, since the connector 50 is fixed at a fixed position in the fixture main body 10, the positional accuracy of the guide piece 33 of the lamp holder unit 30 is important. For this reason, in order to improve the dimensional accuracy of the lamp holder 31 in the longitudinal direction, the meat stealing part 31 as shown in FIG.
f is provided on the lower surface of the upper plate 31b of the lamp holder 31 along the longitudinal direction. Therefore, it is possible to reduce the influence of the difference in cooling speed of the molded product to be the lamp holder 31 on the positional accuracy of the guide piece 33, and to improve the molding accuracy.

The lamp holder 31 is provided with an operation concave portion 31e for detaching the lamp holder unit 30 from the appliance body 10 at the rear of the side plate 31c. Operation recess 3
1e, the inner peripheral surface of a plane parallel to the front end edge of the instrument body 10 is formed in an arc shape, and as shown in FIG. 11, the tip of the flathead screwdriver 55 is inserted into the recess 31e for operation. The lamp holder unit 30 is rotated in the direction of the arrow to apply a force in a direction away from the appliance body 10, or as shown in FIG.
The lamp holder unit 30 can be detached from the fixture body 10 by inserting a part of 6 into the recess 31e for operation and applying a force in a direction in which the lamp holder unit 30 separates from the fixture body 10. . In short, in the guide light of the present embodiment, the lamp holder unit 30 is detachable from the fixture main body 10 with the display unit 20 attached to the fixture main body 10. When the lamp holder unit 30 is attached and detached, the external force in the horizontal direction acts in the thickness direction of the connection terminal 36 as shown by an arrow in FIG. 18, so that the connection terminal 36 does not fall out of the slit 44a, and There is no overload on the lead wire 3b of the lamp 3.

Here, the lamp holder unit 30
Connect a part of the electric shock prevention legs 45, 45 to the connection terminals 36, 36.
When the lamp holder unit 30 is detached, the tip of the flathead screwdriver 55 or the coin 56 is removed.
Can be prevented from hitting the connection terminals 36, 36. Therefore, when the lamp holder unit 30 is to be removed while current is flowing to the cold cathode fluorescent lamp 3, the tip of the flat-blade screwdriver 55 is connected to the connection terminal 36. It is possible to prevent an electric shock due to contact with a part or a coin 56 and to prevent the connection terminals 36, 36 from being damaged. In addition, since the inner peripheral surface of the operation concave portion 31e is formed in the above-described arc shape, it is possible to suggest to the installer that the lamp holder unit 30 can be removed using a coin, and also viewed from the side. The discomfort at the time can be eliminated. In the present embodiment, the lamp holder unit 30 is attached to the fixture body 10 from the front of the fixture body 10 and can be removed from the fixture body 10 to the front. It is only necessary to move the lamp holder unit 30 in the front-back direction on the front side (that is,
It is only necessary to move the lamp holder unit 30 in a direction substantially orthogonal to the display surface of the display panel 21). Even if there is a wall or a wall, it does not hinder the work of attaching and detaching the lamp holder unit 30 to and from the fixture body 10.

In the guide lamp of this embodiment, however, the cold cathode fluorescent lamp 3 is protected by the lamp holder 31, the support 35 and the reflector 32, and is replaced every lamp holder unit 30 when replacing the lamp. Since there is no excessive external force applied to the cold cathode fluorescent lamp 3 during construction,
The breakage of the cold cathode fluorescent lamp 3 can be prevented. Moreover, at the time of construction or replacement of the cold cathode fluorescent lamp 3, the appliance body 1
Since the lamp holder unit 30 can be attached or replaced while the display unit 20 is attached to the display unit 20, the fall prevention mechanism (fall prevention means) for preventing the display unit 20 from falling without fear of the display unit 20 falling. ) Does not need to be provided, and there is no possibility of breakage of the cold cathode fluorescent lamp 3, so that the workability is improved.

Since a part of the lower part of the front plate 31a of the lamp holder 31 is positioned so as to overlap the upper part of the display panel 21 in the front-rear direction, the lower part of the front plate of the lamp holder 31 is displayed lower. An inclined surface is formed such that the amount of protrusion from the panel 21 is reduced. The upper part of the display panel 21 is pressed by a part of the lower end of the lamp holder 31, and the display unit 20 is moved to the fixture body 10.
Can be fixed.

In this embodiment, a square display unit 20 having a left-right width substantially equal to the left-right width of the appliance main body 10 and a vertical width smaller than the vertical width of the appliance main body 10 and a display panel of the display unit 20 are provided. A portion in which the front opening of the appliance main body 10 is covered with the lamp holder unit 30 disposed along the upper edge, and the outer peripheral shape of the display unit 20 and the lamp holder unit 30 surrounds the front opening in the appliance main body 10. Along the outer peripheral shape of. Thus, in the present embodiment, a clean appearance can be achieved, and the uniformity of the luminance of the display surface of the display panel 21 can be increased.

The characteristic value (for example, luminous efficiency) of the cold-cathode fluorescent lamp 3 may decrease as the lamp temperature rises during lighting. However, in this embodiment, the lamp holder 31 is used.
Are supported at both ends in the longitudinal direction of the reflection plate 32 by a support base 35, and the reflection plate 32 is provided at an intermediate portion of the lamp holder 31.
Projecting piece 34 in which holding groove 34a into which is inserted is formed
20 (see FIG. 20), a space for heat radiation is provided between the upper plate 31b of the lamp holder 31 and the reflector 32 by bringing the reflector 32 closer to the light guide plate 22.
As compared with the case where the entire outer peripheral surface of the second member 2 is in close contact with or close to the molded product, the area of the reflector 32 exposed to the space is relatively large, and the heat dissipation of the reflector 32 can be improved.
The temperature rise of the cold cathode fluorescent lamp 3 can be suppressed, and the cold cathode fluorescent lamp 3
Of the luminous efficiency can be suppressed. Further, by providing the support projection 34 formed integrally and integrally with the upper plate 31b and the front plate 31a at an intermediate portion of the lamp holder 31 in the longitudinal direction, the lamp holder 3 can obtain good heat radiation performance.
1 can be increased in strength.

Hereinafter, a device for assembling the lamp holder unit 30 will be described.

As shown in FIGS. 36 and 37, the assembling apparatus has two elevators 74 and 75 separated from each other on a floor or the like, and a free roller is provided between a lower portion and an upper portion of the elevators 74 and 75, respectively. Conveyors 72, 73
Has been erected. The pallet 60 is conveyed on the free roller conveyors 72 and 73, and the work is conveyed while being placed on the pallet 60 shown in FIG. 39 indicates a cold cathode fluorescent lamp 3 on a pallet 60.
1 shows a lamp holder for holding the lamp. The arrow shown in FIG. 36 indicates the moving direction of the pallet 60.

As shown in FIG. 38, the assembling apparatus 70 can assemble the holder block 40, the connection terminal 36, the cold cathode fluorescent lamp 3, the splice band 37, and the lamp holder 31 in the same direction. Improve,
The assembly jig can be simplified.

Here, the assembling apparatus 70 performs an assembling operation on the pallet 60 conveyed on the upper free roller conveyor 73, and the lamp holder 31 and the holder block 40 are connected by the unnecessary part 39. The molded product B, the pair of connection terminals 36, 36, and the cold cathode fluorescent lamp 3 as shown in FIGS. 46 and 47 are supplied to the pallet 60 shown in FIG. 39, and are mounted as shown in FIGS. 40 and 48. A device 76 (see FIG. 36) and a caulking device 77 (see FIG. 36) for connecting the lead wire 3b of the cold cathode fluorescent lamp 3 and the connection piece 36b of the connection terminal 36 by a splice band 37 as shown in FIG. As shown in FIG. 42, a cutting device for cutting the unnecessary portion 3b '(see FIG. 49) of the lead wire 3b of the cold cathode fluorescent lamp 3 and cutting the unnecessary portion 39 (see FIG. 50) of the molded product B. A cold cathode fluorescent lamp 3 (hereinafter, referred to as a lamp with a connection terminal) to which a connection 78 (see FIG. 36) and the above-mentioned connection terminal 36 are connected, as shown in FIG.
2. The lamp holder 31 is connected to a pair of holder blocks 40 and 4.
0 and an assembling device 79 (see FIG. 36). In short, the pallet 60 on which components such as the molded product B are placed is conveyed on the upper free roller conveyor 73, whereby the lamp holder unit 30 is completed.
As shown in FIG. 44, the pallet 60 on which only the lamp holder 61 is disposed circulates on the lower free roller conveyor 72. Therefore, the lead time of the assembling apparatus 70 is determined by the number of pallets 60 to go around and the tact of each process.

The pair of holder blocks 40 and 40 are formed integrally with the lamp holder 31 so as to have a positional relationship for supporting the connection terminal 36 of the cold cathode fluorescent lamp 3. Since the holding portion for holding the molded product B while maintaining the positional relationship between the holder blocks 40, 40 is provided, the molded product is placed on the pallet 60 without worrying about the arrangement of the lamp holder 31 and the holder blocks 40, 40. B can be set, the working time can be shortened and the working efficiency can be improved, and even if the molded product B is set on the pallet 60, the holder blocks 40, 40 can be set.
Since the positional relationship between the lamp holder 31 and the lamp holder 31 is maintained, it is possible to prevent erroneous setting positions and loss of parts.
Further, since the holder block 40 has a slightly different size for each type of guide light, if the holder block 40 and the lamp holder 31 are separately molded, holder blocks of other types will be mixed. Although there is a danger, since the lamp holder 31 and the holder blocks 40, 40 are integrally formed and the molded product B is set on the pallet 60,
Mixing of other types of holder blocks can be prevented.

In short, the above-described lamp holder unit 3
0, the pair of holder blocks 40, 40
Are connected by an unnecessary portion 39 formed on a runner at the time of molding at a position interval supporting the connection terminal 36 of the cold cathode fluorescent lamp 3 so that the lamp holder 31 as a unit main body is connected.
A molded product B comprising a pair of holder blocks 40, 40, a lamp holder 31, and an unnecessary portion 39 is placed on a pallet 60 for assembly, and a cold cathode fluorescent lamp 3 provided with a connection terminal 36 is formed. , Reflector 32 and unnecessary part 39 are separated from holder blocks 40 and 40 to separate lamp holder 3.
1, the cold cathode fluorescent lamp 36 provided with the connection terminal 36 and the reflector 3
2. The lamp holder 31 can be assembled to the pair of holder blocks 40, 40 from one direction to facilitate the assembling operation, and the lamp holder 31 and the pair of holder blocks 40, 40 are integrally molded. Since B is mounted on the pallet 60 for assembly, the holder blocks 40, 40 can be prevented from being lost or misplaced, so that work efficiency can be improved and cost can be reduced.

Also, the lamp holder 31 as a unit body
The gate of a mold (not shown) for integrally molding the pair of holder blocks 40 and 40 is formed at the center of the main body molding portion for molding the lamp holder 31 and for each holder block for molding both holder blocks 40 and 40. And a resin reservoir is provided in a runner that communicates the main body molding section and each holder block molding section, and a pair of holder blocks 40, 40 are connected to the connection terminals 3 of the cold cathode fluorescent lamp 3.
Unnecessary part 3 formed on runner at a position interval supporting support 6
9, the resin holder is provided in a runner that communicates the main body forming section and each holder block forming section with each other, so that the lamp holder 31 is formed. In addition, it is possible to prevent weld lines from being generated in the holder blocks 40, 40, and it is possible to enhance the appearance and mechanical strength of the lamp holder 31 and the holder blocks 40, 40.

The above-mentioned runners 39, 39 are provided with a box D having a plurality of storage chambers as shown in FIG.
Has a function of connecting the lamp holder 31 and the holder blocks 40, 40 when being stored in the pallet 60 and transported to the pallet 60, and is separated without leaving a mark on the molded product B in the assembling process. can do.

In the guide lamp of the present embodiment, a space is provided between the upper plate 31b of the lamp holder 31 and the reflection plate 32 as described above to suppress the temperature rise of the cold cathode fluorescent lamp 3. However, as shown in FIG.
A plurality of heat radiating holes 31d may be provided in one upper plate 31b, and an inner wall 31g may be provided in a portion overlapping the heat radiating holes 31d and the reflector 32 in the vertical direction.

The lead wire 3b of the cold cathode fluorescent lamp 3 and the connection piece 36b of the connection terminal 36 are connected by crimping a splice band 37, as shown in FIGS.
As shown in FIG. 4, a connection terminal 36 'having a slit 36g which is open to the leading edge and into which the lead wire 3b is inserted is formed.
The insertion groove 35e into which the one end side of the connection terminal 36 'is inserted may be formed in the support 35. Here, on both side edges along the longitudinal direction of the connection terminal 36 ', a support base 35 is provided.
A connecting claw 36f for preventing the insertion terminal 35 'from coming out of the insertion groove 35e of the support base 35 is provided.
e can be prevented from falling off. The slit 36g of the connection terminal 36 'is formed so as to be wider at the distal end of the connection terminal 36' as it approaches the leading edge, so that the slit 36g is inserted when the connection terminal 36 'is inserted into the insertion groove 35e. The lead wire 3b can be easily inserted into 35e.

In the guidance of the above embodiment, the instrument body 1
Although the display unit 20 and the lamp holder unit 30 are provided on one surface of the device main body 0, the display unit 20 and the lamp holder unit 30 may be provided on both surfaces of the appliance main body 10. In this case, FIG. 55 and FIG. 56
The two flag-shaped terminals (not shown) may be housed in the connector 50 shown in FIG. 4 and connected to the connection terminals 36 inserted from both sides in the longitudinal direction. Here, when the lamp holder unit 30 is completely attached to the fixture body 10 when the lamp holder unit 30 is attached to the fixture body 10, the side of the electric shock prevention leg 45 is attached to the fixture body 10.
Is provided with a concave portion 45a in which the dowel 15 protruding from the inner surface of the second member is detachably engaged. Therefore, since a click sound is generated when the lamp holder unit 30 is completely attached to the fixture body 10, the installer confirms with the clock sound that the lamp holder unit 30 is completely attached to the fixture body 10. , Lamp holder unit 3
0 can be prevented from being incompletely mounted. FIG.
5 and FIG. 56, the same components as those in the above embodiment are denoted by the same reference numerals. In addition, the dowel 15 in the appliance body 10 and the concave portion 45a in the electric shock prevention leg 45 may be provided in the guide light of the above-described embodiment.

In the above embodiment, the attachment / detachment of the lamp holder unit 30 to / from the fixture main body 10 is performed.
The lamp holder 31 is located on the front side of the upper part of the fixture body 10 as shown in FIG.
A flange portion 31h provided on the rear surface side forms a slide portion 10b into which the slide member is slidably inserted, and as shown in FIG. 58, the lamp holder unit 30 is slid in the left-right direction on the front side of the appliance body 10 to be detached. May be adopted. Further, as shown in FIG. 59, a bearing portion 10c for rotatably holding a shaft portion 31i protruding rearward from the lamp holder unit 30 is provided on the front side of the upper portion of the appliance body 10, and as shown in FIG. The shaft 31i is connected to the bearing 10c.
Alternatively, a configuration may be adopted in which the lamp holder unit 30 is rotated in a state where the lamp holder unit 30 is temporarily held and the lamp holder unit 30 is attached to and detached from the fixture body 10. As shown in FIGS. 61 and 62, a guide portion 20b is provided on the upper surface of the display unit 20 so that the distance from the ceiling increases toward the front, and the side wall 31 of the lamp holder 31 in the lamp holder unit 30 is provided.
The lower part of the lamp holder unit 3 is provided with an inclined portion 31j such that the distance from the upper wall 31a becomes smaller toward the rear.
A configuration may be adopted in which 0 is attached to and detached from obliquely below the front side of the instrument body 10.

[0066]

According to the first aspect of the present invention, a lighting device for lighting a light source is provided in a rectangular parallelepiped appliance body having a front opening, and a rectangular display unit having a light guide plate is provided along the front surface of the appliance body. A lighting device for display, wherein the light source is provided so as to face an end surface of the light guide plate, and the lighting device turns on the light source to illuminate a display panel. In the attached state, the apparatus main body is provided with a detachable lamp holder unit, and at the time of construction or replacement of the light source, the light source is removed without removing the display unit having the relatively large light guide plate from the apparatus main body. Since the held lamp holder unit can be attached and detached, the installer does not directly touch the light source unit during installation or replacement of the light source. Since it handle, there is an effect that it is possible to replace the construction and light source to prevent damage to the light source becomes easy. Further, since there is no need to attach and detach the display unit to and from the instrument body when exchanging the light source, there is no danger of the display unit dropping, and there is no need to provide a means for preventing the display unit from falling. There is an effect that the safety is high even if no fall prevention means is provided.

According to a second aspect of the present invention, in the first aspect of the present invention, the lamp holder unit is removable by being moved in a direction substantially perpendicular to the display surface of the display unit. The lamp holder unit can be attached and detached by utilizing the space that has been widened, and the attachment and detachment of the lamp holder unit is easy and the operability is good. In addition, the lamp holder unit can be easily replaced.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the lamp holder unit includes a connection terminal directly connected to a connector arranged on the appliance body. The connection structure between the connection terminal of the holder unit and the connector arranged on the fixture body side can be simplified, and the structure for holding the lamp unit in the fixture body can be simplified, so that the cost can be reduced. Moreover, since it is not necessary to connect the light source and the connector provided on the appliance body with electric wires, there is an effect that the leakage current of the electric wires can be reduced when the lighting device turns on the light source in a high-frequency lighting method.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the connector is arranged in the appliance main body so as not to protrude from the appliance main body, and the connection terminal projects from the lamp holder unit and is inserted into the connector. Because it is connected, it is not necessary to protrude the terminal from the appliance body side equipped with a power supply, etc., and it is possible to increase safety, especially when the lighting device turns on the light source by a high frequency lighting method. There is an effect that can be.

According to a fifth aspect of the present invention, in the fourth aspect of the present invention, the connection terminal protrudes from a portion near both ends in the longitudinal direction, and the lamp holder unit has an operation recess for removing from the fixture body in the longitudinal direction. Are provided on both side surfaces of the connector, and the electric shock prevention legs overlapping with the connection terminal in the longitudinal direction are protruded from a portion between the operation concave portion and the connection terminal. An electric shock prevention leg can prevent a driver or a coin for removal from coming into contact with the connection terminal, and the electric shock can be prevented, so that there is an effect that the safety is high.

According to a sixth aspect of the present invention, in the third aspect of the present invention, the light source is a straight tube type lamp, and the connection terminal is connected to the light source held by the lamp holder unit in the lamp holder unit. Since the projection protrudes from a portion inside the portion corresponding to both ends, the difference between the width of the lamp holder unit in the direction along the longitudinal direction of the light source and the width of the display unit can be reduced,
This has the effect of improving the appearance.

According to a seventh aspect of the present invention, in the first aspect of the present invention, the lamp holder unit comprises a cold cathode fluorescent lamp as the light source, a reflector surrounding the cold cathode fluorescent lamp, and both ends of the cold cathode fluorescent lamp. A pair of connection terminals respectively connected to the respective lead wires provided and directly connected to the connectors arranged on the appliance body, a unit body made of a synthetic resin in which the cold cathode fluorescent lamp and the reflection plate are housed, and a unit body. Since it includes a cold cathode fluorescent lamp and a pair of synthetic resin holder blocks that support the reflection plate and the connection terminal, the lamp holder is compared with a conventional lamp holder unit in which a harness is connected to a cold cathode fluorescent lamp. There is an effect that the configuration of the unit can be simplified.

According to an eighth aspect of the present invention, in the invention of the seventh aspect, since the lamp holder unit is provided with a heat radiation space above the cold cathode fluorescent lamp in the unit main body, the lamp holder unit can be directly mounted on the ceiling. Even in this case, there is an effect that the temperature rise of the cold cathode fluorescent lamp can be suppressed, and a decrease in the luminous efficiency of the cold cathode fluorescent lamp can be suppressed.

According to a ninth aspect of the present invention, in the invention of the seventh aspect, since the unit body has a heat radiating hole formed at a position above the cold cathode fluorescent lamp, the unit body is generated by the cold cathode fluorescent lamp. There is an effect that heat can be efficiently radiated, a temperature rise of the cold cathode fluorescent lamp can be suppressed, and a decrease in luminous efficiency of the cold cathode fluorescent lamp can be suppressed.

According to a tenth aspect of the present invention, in the invention of the eighth aspect, since the lamp holder unit is provided with a thin lamp supporting portion for supporting both ends of the cold cathode fluorescent lamp, heat radiation is improved. Thus, there is an effect that the temperature rise of the cold cathode fluorescent lamp can be suppressed, and a decrease in the luminous efficiency of the cold cathode fluorescent lamp can be suppressed.

According to an eleventh aspect of the present invention, there is provided a method of manufacturing a display lighting device according to the seventh aspect, wherein the pair of holder blocks are used as runners at the time of molding at a position interval for supporting a connection terminal of a cold cathode fluorescent lamp. The unit is formed integrally with the unit body so as to be connected by the unnecessary portion to be formed, and a molded product including the pair of holder blocks, the unit body, and the unnecessary portion is placed on a pallet for assembly and connected. A cold cathode fluorescent lamp provided with terminals, a reflecting plate, characterized in that the unnecessary portion is cut off and incorporated into the holder block in the order of the unit body separated from the holder block, and a cold cathode fluorescent lamp provided with connection terminals, a reflecting plate, The unit body can be assembled to the pair of holder blocks from one direction, facilitating assembly work, and the unit body and the pair of holder blocks are integrally formed Since performing assembled molded article is placed on the pallet, such as lost or placement error of the holder blocks can be prevented, there is an effect that it is possible to reduce the cost can improve the working efficiency.

According to a twelfth aspect of the present invention, there is provided a method of manufacturing a display lighting device according to the seventh aspect, wherein a mold gate for integrally molding the unit main body and the pair of holder blocks is provided. A central portion of the molding section and each holder block molding section for molding both holder blocks are respectively provided, and a resin reservoir is provided on a runner that communicates the main body molding section and each holder block molding section, and the pair of holder blocks are provided. Molded integrally with the unit body to be connected by unnecessary parts formed on the runner at the position interval supporting the connection terminal of the cold cathode fluorescent lamp,
A molded product comprising the pair of holder blocks, the unit body and the unnecessary portion is placed on a pallet for assembly, and a cold cathode fluorescent lamp provided with connection terminals, a reflector, and the unnecessary portion are separated from the holder block. It is characterized in that it is assembled in the holder block in the order of the separated unit main body, and the cold cathode fluorescent lamp with the connection terminal, the reflector, and the unit main body can be assembled to the pair of holder blocks from one direction, facilitating the assembly work In addition, since the molded product obtained by integrally molding the unit body and the pair of holder blocks is mounted on a pallet and assembled, it is possible to prevent the holder blocks from being lost or misplaced, thus improving work efficiency. And cost can be reduced. In addition, since a resin reservoir is provided in a runner that communicates the main body molding section and each holder block molding section, a weld line can be prevented from being generated in the unit main body and the holder block, and the unit main body and the holder block can be prevented from forming. There is an effect that appearance and mechanical strength can be increased.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an embodiment.

FIG. 2 is a perspective view of the same.

FIG. 3 is a partially cutaway front view of the same.

FIG. 4 is a partially broken front view of the same.

FIG. 5 is a partially broken side view of the same.

FIG. 6 is an exploded perspective view of the display unit in the above.

FIG. 7 is an explanatory diagram of how to attach the lamp holder unit to the appliance main body in the above.

FIG. 8 is an enlarged view of a main part of FIG. 7;

FIG. 9 is an explanatory diagram of how to attach the lamp holder unit to the appliance body in the above.

FIG. 10 is an explanatory view showing how to attach the lamp holder unit to the appliance body in the above.

FIG. 11 is an explanatory diagram of how to remove the lamp holder unit from the appliance main body in the above.

FIG. 12 is an explanatory diagram of how to remove the lamp holder unit from the fixture main body in the above.

FIG. 13 is a perspective view of the lamp holder unit as viewed from the front side.

FIG. 14 is a perspective view of the same lamp holder unit as viewed from the rear side.

FIG. 15 is an exploded perspective view of the lamp holder unit in the same.

FIG. 16 is an exploded perspective view of the lamp holder unit in the same.

FIG. 17 is a partially broken bottom view of the lamp holder unit in the above.

FIG. 18 is an enlarged view of a main part N of FIG. 17;

FIG. 19 is a partially broken bottom view of the lamp holder unit in the above.

FIG. 20 is a cross-sectional view of the lamp holder in the above.

FIG. 21 is a perspective view of the holder block in the above.

FIG. 22 is a cross-sectional view of the holder block in the above.

FIG. 23 is a plan view of the holder block in the above.

FIG. 24 is a sectional view of the holder block in the above.

FIG. 25 is an explanatory diagram of functions of the holder block in the above.

FIG. 26 is an explanatory diagram of how to attach a reflection plate to the holder block in the above.

FIG. 27 is an explanatory diagram of how to attach a reflection plate to the holder block in the above.

28 (a) is a front view, FIG. 28 (b) is a partially cutaway side view, and FIG. 28 (c) is a top view.

FIG. 29 is an explanatory diagram of how to attach a connection terminal to the holder block in the above.

FIG. 30 is a partially broken sectional view of the lamp holder unit in the above.

FIG. 31 is an enlarged view of a main part M of FIG. 30;

FIG. 32 is an explanatory diagram of a main part in the above.

FIG. 33 is a perspective view showing a state where a connection terminal is connected to the cold cathode fluorescent lamp in the above.

FIG. 34 is a side view showing a state where the connection terminal is connected to the cold cathode fluorescent lamp in the above.

FIG. 35 is an exploded perspective view of FIG. 33.

FIG. 36 is a schematic configuration diagram of the assembling apparatus.

FIG. 37 is an explanatory view of the assembling apparatus.

FIG. 38 is a schematic explanatory view of a manufacturing method using the assembling apparatus.

FIG. 39 is an explanatory diagram of the manufacturing method.

FIG. 40 is an explanatory diagram of the manufacturing method.

FIG. 41 is an explanatory diagram of the manufacturing method.

FIG. 42 is an explanatory diagram of the manufacturing method.

FIG. 43 is an explanatory diagram of the manufacturing method.

FIG. 44 is an explanatory diagram of the manufacturing method.

FIG. 45 is an explanatory diagram of the manufacturing method.

FIG. 46 is an explanatory diagram of the manufacturing method.

FIG. 47 is an explanatory diagram of the manufacturing method.

FIG. 48 is an explanatory diagram of the manufacturing method.

FIG. 49 is an explanatory diagram of the manufacturing method.

FIG. 50 is an explanatory diagram of the manufacturing method.

FIG. 51 is an explanatory diagram of a method for transporting a molded product of the above.

FIG. 52 is a cross-sectional view of a main part of another configuration example of the above.

FIG. 53 is an exploded perspective view of another configuration example of the lamp holder unit of the above.

54 shows connection terminals in FIG. 53, (a) is a front view, and (b) is a top view.

FIG. 55 is an exploded perspective view of a main part of another configuration example of the above.

FIG. 56 is a partially cutaway side view of another configuration example of the above.

FIG. 57 is an explanatory diagram of how to attach the lamp holder unit to the appliance body in another configuration example of the above.

FIG. 58 is an explanatory view showing how to attach a lamp holder unit to a fixture body in another configuration example of the above.

FIG. 59 is an explanatory view showing how to attach the lamp holder unit to the fixture body in another configuration example of the above.

FIG. 60 is an explanatory view showing how to attach a lamp holder unit to an appliance body in another configuration example of the above.

FIG. 61 is an explanatory view showing how to attach the lamp holder unit to the fixture body in another configuration example of the above.

FIG. 62 is an explanatory diagram of how to attach the lamp holder unit to the fixture body in another configuration example of the above.

FIG. 63 is an explanatory diagram of how to attach the lamp holder unit to the appliance body in another configuration example of the above.

FIG. 64 is an explanatory diagram of how to attach the lamp holder unit to the appliance body in another configuration example of the above.

FIG. 65 is a partially broken front view showing a conventional example.

FIG. 66 is an exploded perspective view of the same.

FIG. 67 is an explanatory diagram of the cold cathode fluorescent lamp in the above.

FIG. 68 is an explanatory diagram of how to attach the cold cathode fluorescent lamp in the above.

FIG. 69 is an explanatory diagram of how to attach the cold cathode fluorescent lamp in the above.

FIG. 70 is an explanatory view of a main part of the above.

FIG. 71 is an explanatory diagram of how to attach a cold cathode fluorescent lamp in another conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 3 Cold cathode fluorescent lamp 10 Instrument main body 20 Display unit 21 Display panel 30 Lamp holder unit 31 Lamp holder 32 Reflector 36 Connection terminal 45 Electric shock prevention leg 50 Connector

Claims (12)

[Claims] A lighting device for lighting a light source is provided in a rectangular parallelepiped appliance body having a front opening, and a rectangular display unit having a light guide plate is provided along a front surface of the appliance body, and an end face of the light guide plate. A lighting device for display, wherein the light source is provided in opposition to the lighting device, and the lighting device turns on the light source to illuminate a display panel, wherein the lighting device holds the light source and the display unit is attached to a device main body. A display lighting device comprising a main body and a detachable lamp holder unit. 2. The display lighting apparatus according to claim 1, wherein the lamp holder unit is detachable by moving in a direction substantially perpendicular to a display surface of the display unit. 3. The display lighting device according to claim 1, wherein the lamp holder unit includes a connection terminal directly connected to a connector arranged on the device main body. 4. The connector is arranged in the device main body so as not to protrude from the device main body, and the connection terminal is:
The display lighting device according to claim 3, wherein the display lighting device protrudes from a lamp holder unit and is inserted and connected to the connector. 5. The connection terminal protrudes from a portion near both ends in the longitudinal direction, and the lamp holder unit has operation concave portions provided on both side surfaces in the longitudinal direction for removing the lamp holder unit from the appliance main body. 5. The display lighting device according to claim 4, wherein an electric shock prevention leg overlapping the connection terminal protrudes from a portion between the operation concave portion and the connection terminal. 6. 6. The lamp according to claim 1, wherein the light source is a straight tube-type fluorescent lamp, and the connection terminal is located at a position inside the lamp holder unit that is inside a region corresponding to both ends of the light source held by the lamp holder unit. The display lighting device according to claim 3, wherein the display lighting device protrudes. 7. The apparatus body connected to a cold cathode fluorescent lamp as the light source, a reflector surrounding the cold cathode fluorescent lamp, and lead wires provided at both ends of the cold cathode fluorescent lamp, respectively. A pair of connection terminals respectively connected directly to the connectors arranged in the unit, a unit body made of synthetic resin in which the cold cathode fluorescent lamp and the reflecting plate are housed, and the cold cathode fluorescent lamp, the reflecting plate and the connection incorporated in the unit body The display lighting device according to claim 1, further comprising a pair of synthetic resin holder blocks that support the terminals. 8. The display lighting apparatus according to claim 7, wherein a space for heat radiation is provided above the cold cathode fluorescent lamp in the unit main body of the lamp holder unit. 9. The display lighting apparatus according to claim 7, wherein the unit main body is provided with a heat radiating hole at a position above the cold cathode fluorescent lamp. 10. The display lighting apparatus according to claim 8, wherein the lamp holder unit is provided with a thin lamp supporting portion for supporting both ends of the cold cathode fluorescent lamp. 11. The manufacturing method of a display lighting device according to claim 7, wherein the pair of holder blocks are formed on a runner at the time of molding at a position interval supporting a connection terminal of a cold cathode fluorescent lamp. The molded article composed of the pair of holder blocks, the unit body, and the unnecessary part is placed on a pallet for assembly, and is cooled with a connection terminal. Cathode fluorescent lamp,
A method for manufacturing a display lighting device, characterized in that a reflector plate and the unnecessary part are separated and incorporated into a holder block in the order of a unit body separated from the holder block. 12. The method of manufacturing a display lighting device according to claim 7, wherein a gate of a mold for integrally molding the unit main body and the pair of holder blocks is formed at a central portion of a main body molding portion for molding the unit main body. And the holder block forming section for forming both holder blocks, and a resin reservoir is provided on a runner that communicates the main body forming section and each holder block forming section, respectively, and the pair of holder blocks are formed of a cold cathode fluorescent lamp. It is molded integrally with the unit main body so as to be connected by unnecessary parts formed on the runner at a position interval supporting the connection terminal, and assembles a molded product including the pair of holder blocks, the unit main body, and the unnecessary part. Placed on a pallet for use, and separated from the holder block by separating the cold cathode fluorescent lamp, the reflector, and the unnecessary part provided with the connection terminals. A method of manufacturing a display lighting device, wherein the display lighting device is incorporated into a holder block in the order of a unit body.