JPH01236006A - Portable case having internal illumination - Google Patents

Abstract

PURPOSE:To obtain a portable case having an internal illumination which is the most suitable for this type of goods is not bulky, is difficult to be damaged and, hence, by making an EL element to emit light in impressing a voltage on a phosphor into a light source and making it into an illuminating device whose light-emitting surface faces to the inner space. CONSTITUTION:An illuminator 3 to make the EL element formed in a rectangular sheet shape into the light source is sewn in between an outer cloth 2a and an inner cloth 2b at one side to compose the main surface of an outer shell 2 of a handbag 1, and a light-emitting surface 3a is exposed from a rectangular window part 4 provided on the inner cloth 2b to the inner space. A power source case 5a to house a battery 5 is sewn in the intermediate position of a side surface, simultaneously, a light-up switch 6 is sewn close to an opening 1a, the light-up switch 6 is set so as to be made into an off-condition and an on-condition under the closing and opening of the opening 1a of the bag 1, respectively, the voltage of the battery 5 is impressed to the illuminator 3 when said opening 1a is opened, the light-emitting surface 3a is light-emitted, and the internal part of the bag 1 is illuminated.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is a method for making it possible to visually check the inside of various portable storage devices such as band bags, Boston bags, attache cases, portable coolers, etc. even in the dark. Regarding those equipped with internal lighting.

[Conventional technology]

Various existing bags do not have lighting devices, regardless of their size or purpose, and are very inconvenient because the interior cannot be clearly seen in dark places such as on streets at night or in movie theaters. Furthermore, portable coolers used for fishing, hiking, etc. also have the same inconvenience at night.

[Problem to be solved by the invention]

In order to ensure visibility in the dark in the various portable storage devices mentioned above, it is possible to install internal lighting, but the combination of a normal light source such as a light bulb and batteries is bulky, so it is especially difficult to use for band bags. It is not suitable for small-sized storage devices, and the light source is easily damaged by contact with or impact with the stored items.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a portable storage device that is not bulky and has internal illumination that is excellent in intensity.

[Means to solve the problem]

As a result of extensive studies to achieve the above object, the inventors found that an electroluminescent (hereinafter referred to as EL) element, which emits light by applying a voltage to a phosphor, is capable of surface emitting light, and that the entire element It can be formed into a thin sheet with high mechanical strength, and because it consumes very little power, a small battery with a small capacity can be used as a power source, making it ideal for portable storage devices as it is not bulky and does not easily break. They discovered that it is possible to realize internal lighting, and came up with this invention.

That is, the present invention provides a portable storage device with internal illumination, which includes an illumination device whose light source is an EL element that emits light by applying a voltage to a phosphor, and whose light emitting surface fills an internal space, and a power source for the light emission. Related.

[Structure and operation of the invention]

FIG. 1 is a partially cutaway perspective view showing an example of a handbag to which the present invention is applied, and FIG. 2 is a sectional view of the main parts thereof.

This band bag 1 uses an EL element as a light source, which is formed in a rectangular sheet shape between an outer lining 2a and an inner lining 2b on one side, which constitute the main surface of the bag outer shell 2, and is made of leather, outer material, synthetic resin sheet, etc. A lighting device 3 is sewn in,
A rectangular window 4 whose light emitting surface 3a is provided in the lining 2b
It is more exposed to the internal space. Furthermore, a power supply case 5a containing a battery 5 is sewn in between the similar outer lining 2a and inner lining 2b that constitute one side of the bag outer shell 2, and an opening of the bag 1 is sewn in between the outer lining 2a and the inner lining 2b. A lighting switch 6 is sewn in close to the portion 1a, and the lighting device 3, power supply case 5a, and lighting switch 6 are electrically connected by leads &%7.

The lighting switch 6 is set to be in an OFF state when the opening 1a of the bag 1 is closed and to be in an ON state when the opening 1a is opened. is applied, the light emitting surface 3a emits light and the bag 1
to illuminate the interior of.

FIG. 3 is a sectional view showing an example of the structure of the lighting device 3. FIG. In the figure, 8 is a transparent film 8a made of polyethylene terephthalate or the like with a thickness of 0.1 μm formed on one side of the transparent film 8a by a thin film forming means in vacuum such as vacuum evaporation, sputtering, or ion blasting.
~0.4 μm indium-tin composite oxide thin film (
It is a transparent electrode made of a thin film of a transparent conductive material such as ITO film (hereinafter referred to as an ITO film), and a layer of 30 to 80 μm thick
A light-emitting layer 9 with a thickness of approximately 5 to 30 μm, a reflective insulating layer 10 with a thickness of approximately 5 to 30 μm, and a back electrode 11 having a thickness of approximately 0.1 to 1 μm made of an aluminum film formed by the same thin film forming method in vacuum as described above are laminated and dispersed. It constitutes a type EL element.

The lighting device 3 has a total thickness of 0.5 to 1.5 in which the entire EL element portion is covered with front and back transparent moisture-proof sheets 12a and 12b made of polychlorotrifluoroethylene or the like.
The lead wires 7, 7 from the picture electrodes 8, 11 led out from the side of the sheet are connected to the battery 5 and the lighting switch 6 to form a lighting circuit. When the lighting switch 6 is in the ON state, the light emitting layer 9 emits light due to the voltage applied between the picture electrodes 8 and 11, and this light emission is directed towards the transparent electrode 8 side, that is, the light emitting surface 3.
The light is emitted from a for illumination.

Here, the light-emitting layer 9 is generally made of a phosphor powder containing a small amount of a luminescence activating material in a matrix made of a phosphor material such as zinc sulfide (ZnS), such as ZnS:Cu, Cj! (blue-green luminescence), ZnS:Cu, Mn (yellow-orange luminescence), etc. powders are dispersed in a binder with a high dielectric constant such as cyanoethylated polyvinyl alcohol or cyanoethylated sucrose, and includes the above powders and binders. It is formed by applying paint using screen printing or other methods and drying it.

The reflective insulating layer 10 has both the function of reflecting the light emitted from the light emitting layer 9 and restricting it only to the side of the light emitting surface, and the function of increasing the dielectric breakdown voltage of the EL element.
It is made of powder such as aTio3 dispersed in the same binder as the light-emitting layer 9, and is formed by screen printing or the like like the light-emitting layer 9.

As the EL element of the illumination device 3, a dispersion type EL element as illustrated is particularly suitable in terms of flexibility and strength. It is also possible to employ an EL element having a light emitting layer and an insulating layer formed without a binder. Further, the lighting switch 6 may be turned on and off at will by the user without being linked to the opening and closing of the storage device.

This invention is applicable not only to the hunt bag described above, but also to various portable storage devices such as Boston bags and other types of portable bags, portable cases such as attache cases, and portable hooks such as portable coolers. It can be applied in the same way.

〔Effect of the invention〕

The portable storage device of the present invention is equipped with a lighting device whose light-emitting surface faces the interior space using an EL element as a light source, and a power source for the light-emission, so that the interior can be clearly seen even in the dark due to the surface luminescence, making it extremely convenient. Moreover, since the lighting device is not bulky and can be formed into a strong sheet shape, there is an advantage that there is no problem in loading and unloading articles and there is no risk of damage to the light source.

In addition, if the lighting switch interposed between the lighting device and the power source for light emission is configured to turn on and off as the storage device is opened and closed, the interior will automatically open when the storage device is opened in a dark place. While being illuminated, the illumination device remains off when the opening of the storage device is closed, which has the effect of avoiding power consumption due to forgetting to turn off the switch.

〔Example〕

Hereinafter, the present invention will be specifically explained with reference to Examples.

Example A polyethylene terephthalate film with a thickness of 75 μm, on which a transparent electrode made of IT○ film with a thickness of 0.15 μm was previously formed on one side, was pasted on a transparent moisture-proof sheet manufactured by Nitto Electric Industries ■ with a thickness of 0.4 m. Then, on the transparent electrode of this film, a phosphor powder consisting of ZnS:Cu and Cβ was dispersed in cyanoethylated polyhinyl alcohol to a thickness of 6 mm.
A 0 μm light emitting layer and a 30 μm thick reflective insulating layer in which BaTi○3 powder is dispersed in cyanoethylated polyvinyl alcohol are laminated by screen printing, and a thickness is further formed on the reflective insulating layer by resistance heating vapor deposition. A back electrode made of a 1 μm aluminum film was laminated, and a transparent moisture-proof sheet similar to the above was pasted on top of this laminated material, and a light emitting source made of an EL element was encapsulated.Total thickness: 1 yen, length: 100 m, width: 100 m
A lighting device in the form of a square sheet of mm square was produced.

Next, this lighting device is sewn between the outer lining and the lining on one side that make up the main outer shell of the handbag, so that the main part of the light emitting surface is exposed inside the hack through the square window formed in the lining. At the same time, a power supply case incorporating a power source consisting of five 15 x 50 x 1011 O car batteries and a lighting switch that turns on and off as the bag is opened and closed are sewn between the outer and inner linings that make up one side of the bag. A lighting device, a power supply case, and a lighting switch were connected with a lead wire to produce a handbag having the structure shown in FIG. 1 and having internal lighting as shown in FIG. 2.

When this handbag was opened in a dark place, the interior was illuminated with blue-green light, allowing the items stored inside to be clearly and clearly identified.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of a handbag with internal lighting according to the present invention, FIG. 2 is a sectional view of the main part thereof, and FIG. 3 is a sectional view of a lighting device used in the bag. 1... Handbag (portable storage device), 3... Lighting device, 3a... Light emitting surface, 5... Battery (power supply), 6...
...Lighting switch patent applicant Hitachi Maxell, Ltd.

Claims (2)

[Claims] (1) A portable storage device with internal lighting, comprising a lighting device whose light source is an electroluminescent element that emits light by applying a voltage to a phosphor, and whose light emitting surface faces an internal space, and a power source for the light emission. (2) The portable storage device with internal lighting according to claim (1), wherein a lighting switch is interposed between the lighting device and the light emitting power source to turn on and off as the storage device is opened and closed.