JP2010055789A - Portable illumination device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable to uniformly irradiate light from a wide area, by enlarging an area of a solar battery to enlarge generated power, shortening charging time of the battery, thinning it to be convenient for portability, and widening an area of a light source. <P>SOLUTION: The portable illumination device is provided with an outer package case 1, a chargeable battery 4 incorporated in the package case 1, a solar cell 2 charging the battery 4, and a light source lit by the battery 4. The outer package case 1 is of a plate shape consisting of a first face 11 and a second face 12 opposed to each other. The solar cell 2 is arranged on the first face 11 and a panel light source 3 irradiating light from a given area is arranged on the second face 12, with the solar cell 2 and the panel light source 3 in a posture opposed to each other. Further, the portable illumination device incorporates the battery 4 at the periphery part of the package case 1 and located outside the solar cell 2 and the panel light source 3. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to portable illumination for charging a built-in battery with a solar battery and lighting a light source.

Illumination that turns on a light source by charging a battery built in a solar battery can be lit using natural energy effectively. In addition, there is a feature that can be conveniently used in a state where power is not supplied due to a disaster such as an earthquake or a typhoon, or at leisure. Portable lighting that can be used for this purpose has been developed. (See Patent Document 1)
Japanese Utility Model Publication No. 63-194401

  The portable illumination described in Patent Document 1 incorporates a fluorescent lamp and a solar battery so that the entire shape of the exterior case is a columnar shape, and incorporates a battery and a circuit board at one end. If the area of the illumination with this structure is increased by widening the solar cell, the outer case becomes thick and inconvenient to carry. If the outer case is made thin and convenient for carrying, the width of the built-in solar cell is reduced and the area is reduced. A solar cell with a small area requires a small amount of generated power and takes time to charge the battery.

The present invention has been developed for the purpose of solving this drawback. An important object of the present invention is to provide a portable illumination that is thin and convenient to carry while enlarging the area of the solar cell to increase the generated power and shortening the charging time of the battery.
Further, another important object of the present invention is to provide a portable illumination that can irradiate light uniformly from a wide area by widening the area of the light source.

Means for Solving the Problems and Effects of the Invention

In order to achieve the above-mentioned object, the portable illumination of the present invention has the following configuration.
The portable illumination includes an outer case 1, a rechargeable battery 4 built in the outer case 1, a solar battery 2 that charges the battery 4, and a light source that is turned on by the battery 4. The outer case 1 has a plate shape having a first surface 11 and a second surface 12 facing each other, and the solar cell 2 is applied to the first surface 11 and light from a predetermined area is applied to the second surface 12. The panel light source 3 to irradiate is arrange | positioned, and the solar cell 2 and the panel light source 3 are arrange | positioned as the attitude | position facing each other. Further, the portable illumination is located on the outer periphery of the outer case 1 and outside the solar cell 2 and the panel light source 3 and incorporates the battery 4.

  The above portable illumination has a feature that it is thin and convenient to carry while increasing the generated power by increasing the area of the solar cell and shortening the charging time of the battery. It consists of a plate having a first surface and a second surface facing the outer case, a solar cell on the first surface, and a panel light source that emits light from a predetermined area on the second surface. The solar cell and the panel light source are arranged so as to face each other, and the flat portion for storing the solar cell and the panel light source is thinned. Further, the outer periphery of the outer case does not contain the solar cell and the panel light source. This is because the battery is housed in the outer peripheral portion to make the battery housing thinner. Since the solar cell and the panel light source can be made thin in a planar shape, the outer case can be made thin while increasing both areas by arranging them so as to face each other. Further, by storing the battery in an outer peripheral portion that does not incorporate the solar battery and the panel light source, this part can also be thinned as a structure in which the battery, the solar battery, and the panel light source are not stacked. For this reason, the entire outer case can be made thin and the areas of the solar cell and the panel light source can be increased, so that it can be used very conveniently. Panel light sources that can be used in large areas can be used conveniently as lanterns by uniformly irradiating light from a wide area.

In the portable illumination of the present invention, the exterior case 1 is provided with an opening 15 extending along the outside of the flat portion 10 on which the solar cell 2 and the panel light source 3 are arranged, and the outside of the opening 15 is used as the grip 5. The battery 4 can be built in the grip 5.
The above portable lighting can incorporate a battery by effectively utilizing the space formed inside the grip while holding the grip and carrying it conveniently.

In the portable illumination of the present invention, the outer case 1 has a quadrangular shape, a grip 5 is provided along one side of the quadrangle, and the flat surface portion 10 has a quadrangular shape. Can be provided.
The portable lighting described above can be conveniently carried in a well-balanced manner by gripping the grip with the solar cell and panel light source as a large square.

The portable illumination of the present invention can be provided with a beam light source 6 at one end of the grip 5 of the outer case 1.
This portable illumination can uniformly irradiate a wide area with a panel light source and brightly irradiate a specific area with a beam light source.

In the portable illumination of the present invention, the exterior case 1 can include a buffer bar 7 made of a rubber-like elastic body along the side edge on the opposite side of the grip 5.
Even if the above portable illumination is accidentally dropped while being gripped and carried, the shock can be absorbed by a buffer bar made of a rubber-like elastic body. For this reason, it is possible to prevent a failure due to a drop impact.

  Embodiments of the present invention will be described below with reference to the drawings. However, the embodiment described below exemplifies portable illumination for embodying the technical idea of the present invention, and the present invention does not specify portable illumination as follows.

  Further, in this specification, in order to facilitate understanding of the scope of claims, numbers corresponding to the members shown in the examples are indicated in the “claims” and “means for solving problems” sections. It is added to the members. However, the members shown in the claims are not limited to the members in the embodiments.

  The portable illumination shown in FIGS. 1 to 6 is lit by an outer case 1, a rechargeable battery 4 built in the outer case 1, a solar battery 2 for charging the battery 4, and the battery 4. A light source.

  The exterior case 1 shown in the figure has a plate shape having a first surface 11 and a second surface 12 facing each other, and has an overall shape of a quadrangle. Further, the exterior case 1 shown in the figure is provided with a grip 5 along one side of the quadrangle. The exterior case 1 is provided with an opening 15 so as to extend along the outside of the flat portion 10 on which the solar cell 2 and the panel light source 3 are arranged, and the outside of the opening 15 is used as a grip 5. The exterior case 1 shown in the figure has an overall shape of a rectangle and a planar portion 10 of a square. An opening 15 having an inner width into which a hand can be inserted is provided outside the square flat portion 10 in parallel with the short side of the rectangular outer case 1, and the grip 5 is provided outside the opening 15. The grip 5 has a circular or oval cross-sectional shape so that it can be easily grasped by hand and can easily accommodate the cylindrical battery 4 therein.

  The planar portion 10 of the exterior case 1 is provided with opening windows 13 and 14 for exposing the solar cell 2 and the panel light source 3 on the first surface 11 and the second surface 12. The exterior case 1 shown in the figure has a rectangular opening window 13 on the first surface 11 and is fixed so that the rectangular solar cell 2 is exposed, and the opening window 14 on the second surface 12 is also square. A rectangular panel light source 3 is fixed to the frame. Further, in the illustrated illumination, the opening windows 13 and 14 are square, and the square solar cell 2 and the panel light source 3 are fixed here.

  Portable illumination can increase the area of the solar cell 2 to quickly charge the large-capacity battery 4, and the panel light source 3 can be enlarged for bright illumination. The rectangular outer case 1 can be equipped with a solar cell 2 having a side length of 15 cm to 25 cm and a rated output of 2 W to 3 W.

  The solar cell 2 is fixed to the exterior case 1 so as to close the opening window 13 provided on the first surface 11 in a watertight manner. The solar cell 2 has a rubber-like elastic packing 21 sandwiched between the outer peripheral edge surface and the inner surface of the outer case 1, or between the outer peripheral edge surface and the outer case 1 inner surface. It caulks and it fixes so that the opening window 13 may be obstruct | occluded watertight. Furthermore, the exterior case 1 shown in the figure has a translucent plate 22 fixed to the outer surface of the opening window 13. The translucent plate 22 is a translucent plate that transmits sunlight and is, for example, a plastic plate such as an acrylic plate. The translucent plate 22 is fixed by bonding its outer peripheral edge to a step 16 provided along the opening window 13 of the outer case 1. The translucent plate 22 is fixed so as to close the opening window 13 in a watertight manner by caulking between the surface of the stepped portion 16.

  The panel light source 3 irradiates light by arranging a plurality of light sources and diffusing it over a wide area. A panel light source 3 shown in FIGS. 5 to 8 includes a point light source 30 including a plurality of white light emitting diodes 30 </ b> A arranged vertically and horizontally, a reflecting plate 31 that reflects light from the point light source 30, and the reflecting plate 31. And a light diffusing plate 32 disposed on the surface. In the panel light source 3 shown in the figure, an insulating substrate 33 formed by fixing a plurality of light emitting diodes 30A is stored in a storage portion 34A provided on an inner plate 34, and a reflecting plate 31 and a diffusion plate 32 are stacked on the insulating substrate 33. Thus, the storage portion 34 </ b> A of the inner plate 34 is closed by the diffusion plate 32.

  In the illustrated panel light source 3, 3 × 3 chip-type light emitting diodes 30 </ b> A are fixed to the surface of the reflector 31. The chip-type light emitting diode 30A irradiates light uniformly at a wide angle without focusing the light. Illumination with the point light source 30 as the light emitting diode 30A is brighter by reducing the power consumption of the battery 4, and can be irradiated for a long time. For example, in a state where nine light emitting diodes 30A are lit, a battery to be described later can be built in and lighted for about 9 hours, or the lighted light emitting diodes 30A can be switched to five and lighted for about 15 hours. One light emitting diode 30A can be lit for 35 hours. However, in the illumination of the present invention, a bean ball can be used as the point light source instead of the light emitting diode.

  The reflecting plate 31 is provided with a concave portion 31A on the surface, and the point light source 30 is arranged at the center of the concave portion 31A. The reflection plate 31 has a reflection layer on the surface. The reflection plate 31 can be formed of plastic, and the surface thereof can be metal-plated to provide a reflection layer. The reflective layer can be formed by pressing a metal plate such as stainless steel or plating the surface of the metal plate. The reflection plate 31 is provided with a through hole 31B at the center of the recess 31A, and the light emitting diode 30A of the point light source 30 is disposed here. The light emitting diode 30 </ b> A is fixed to the insulating substrate 33 fixed to the back surface of the reflecting plate 31 and is disposed in the through hole 31 </ b> B of the reflecting plate 31. The insulating substrate 33 is a printed circuit board, and as shown in FIG. 8, the light emitting diode 30 </ b> A is fixed at a predetermined position on the surface on which the reflection plate 31 is laminated. Furthermore, although not shown, this insulating substrate 33 is mounted with a dedicated electronic component that realizes the block circuit diagram of FIG.

  The diffusing plate 32 is a translucent plate having a concavo-convex surface, and scatters light emitted from the point light source 30 with the concavo-convex surface. In the panel light source 3 shown in the drawing, two diffusion plates 32 each including a first diffusion plate 32 </ b> A and a second diffusion plate 32 </ b> B are stacked on each other and disposed outside the reflection plate 31. The first diffusion plate 32A is laminated on the side facing the reflection plate 31, and the second diffusion plate 32B is laminated on the side opposite to the reflection plate 31, that is, on the outside.

  The first diffusion plate 32A has a surface facing the reflection plate 31 as a smooth surface and a surface facing the second diffusion plate 32B as an uneven surface. The uneven surface of the first diffusion plate 32A shown in FIGS. 6 and 8 has a plurality of rows of concave grooves 32a provided in parallel to each other. The first diffusion plate 32A radiates light that is incident and transmitted through a smooth surface by being refracted in various directions by the uneven surface. Furthermore, the first diffuser plate 32A diffuses and reflects a part of the light incident from the smooth surface on the uneven surface, and reflects the reflected light on the smooth surface and the reflector plate 31 so as to diffuse it in various directions. Let Accordingly, the first diffusion plate 32A diffuses and emits the light emitted from the point light source 30.

  The second diffusion plate 32B has a surface facing the first diffusion plate 32A as an uneven surface and an outer surface which is the opposite surface as a smooth surface. Since the surface exposed from the outer case 1 is a smooth surface, the second diffusion plate 32B can diffuse transmitted light while preventing the surface from being stained. The uneven surface of the second diffusion plate 32B shown in FIGS. 6 and 7 has a shape in which a large number of quadrangular pyramid-shaped recesses 32b are regularly arranged in the diagonal direction, in FIG. The second diffusing plate 32B radiates light incident from the concavo-convex surface to the outside by being refracted in various directions by the concavo-convex surface. Furthermore, the second diffuser plate 32B diffuses and reflects part of the light incident on the concave and convex surface on the concave and convex surface and reflects the reflected light on the first diffuser plate 32A and the reflective plate 31 in various directions. Spread. Therefore, the second diffusion plate 32A further diffuses the light emitted from the point light source 30 and diffused by the first diffusion plate 32A, and radiates it as uniform light from the outer smooth surface. In particular, the direction of the plurality of rows of concave grooves 32a provided on the uneven surface of the first diffusion plate 32A and the direction of the arrangement of the plurality of concave portions 32b provided on the second diffusion plate 32B are made to intersect each other. The light transmitted through the two diffusion plates 32 can be diffused more effectively.

  As described above, the diffusing plate 32 disposed to face the reflecting plate 31 refracts the light emitted from the point light source 30 in various directions on the concavo-convex surface and partially irradiates a part of the transmitted light. The light is diffusely reflected by the surface, and the light reflected by the diffusion plate 32 is reflected by the reflection plate 31, and is emitted outside while diffusing in various directions. Therefore, the panel light source 3 in which the point light source 30 including the plurality of light emitting diodes 30A is disposed between the reflecting plate 31 and the diffusing plate 32 can diffuse the light from the point light source 30 uniformly and radiate the light to the outside.

  The diffusion plate 32 is manufactured by molding a transparent plastic. As shown in FIG. 8, the first diffusion plate is housed in the housing portion 34 </ b> A of the inner plate 34 built in the outer case 1 with the same outer shape as the reflection plate 31. The inner plate 34 is provided with an inner peripheral wall 34B that protrudes along the outer peripheral edge, and the inner side of the inner peripheral wall 34B serves as a storage portion 34A. The inner plate 34 fixes the insulating substrate 33 to the storage portion 34 </ b> A and stores the reflection plate 31 and the first diffusion plate 32 </ b> A in a stacked state on the insulating substrate 33. As shown in FIGS. 5 to 7, the second diffusion plate 32B has an outer shape larger than the opening window 14 of the second surface 12, and an outer peripheral wall 32x is provided so as to protrude to the inner surface. An O-ring 35 is disposed on the inside. The O-ring 35 is disposed on the outer side of the inner peripheral wall 34B provided on the inner plate 34 and on the inner side of the outer peripheral wall 32x of the second diffusion plate 32B, so that the inner plate 34 and the second diffusion plate 32B are in contact with each other. The space is closed tightly.

  The above diffusion plate 32 is a laminate of two diffusion plates. However, the diffusion plate does not necessarily need to be laminated with two diffusion plates, and may be one or three or more. You can also. Further, the uneven surface of the diffusion plate is not limited to the above-described shape, and can be any other shape that can diffuse the transmitted light in various directions.

  As shown in FIGS. 3 to 6, the outer case 1 includes a first case 1A and a second case 1B, and an inner plate 34 is fixed inside the first case 1A and the second case 1B. The outer case 1 is made of plastic and is divided into a first case 1A and a second case 1B so that the thickness is divided in half. The first case 1A is provided with a first surface 11 having an opening window 13 through which the solar cell 2 is exposed. The second case 1B is provided with a second surface 12 having an opening window 14 through which the panel light source 3 is exposed. The first case 1 </ b> A and the second case 1 </ b> B are provided with a peripheral wall 17 along the outer periphery and the opening 15. 1st case 1A and 2nd case 1B are made into the shape which connects the surrounding wall 17 and closes an inside. The first case 1A and the second case 1B are fixed by screwing a set screw 20 penetrating the second case 1B into a boss 19 provided so as to protrude from the inner surface of the first case 1A.

  The inner plate 34 is made of plastic, is molded into an outer shape substantially equal to the inner shape of the flat portion 10 of the outer case 1, and is fixed to the second case 1B with a set screw 36. However, the inner plate can also be fixed to the first case. In order to fix the inner plate 34, the second case 1B is provided with a boss 18 into which a set screw 36 penetrating the inner plate 34 is screwed so as to protrude from the inner surface. The inner plate 34 is fixed to one surface so that the insulating substrate 33 to which the light emitting diode 30A is fixed, the reflection plate 31, and the diffusion plate 32 are laminated. An O-ring 35 is sandwiched between the diffusion plate 32 and the inner plate 34, and the space between the inner plate 34 and the diffusion plate 32 is closed with a watertight structure. Further, the solar cell 2 is disposed on the surface on the opposite side of the inner plate 34.

  Further, the outer case 1 of FIGS. 1 to 5 fixes a buffer bar 7 made of a rubber-like elastic body along a side edge on the opposite side of the grip 5. The buffer bar 7 is sandwiched between slits 25 provided in the first case 1 </ b> A and the second case 1 </ b> B and is fixed along the bottom edge of the exterior case 1. The outer case 1 of FIG. 5 is provided with slits 25 in the peripheral walls 17 of the first case 1A and the second case 1B in order to sandwich the buffer bar 7. The buffer bar 7 in the figure is formed in a U-shape formed by bending both end portions inward. Therefore, the exterior case 1 is provided with slits 25 from the opposite side edge of the grip 5 to the side surfaces on both sides, and the buffer bar 7 is arranged in the region of the bottom edge of the exterior case 1 and the corners at both ends thereof. . The buffer bar 7 of this shape has a feature that can reliably protect not only the bottom edge of the outer case 1 but also the corner portion. The first case 1 </ b> A and the second case 1 </ b> B are provided with a guide groove 26 that guides the connecting protrusion 7 </ b> A provided along the outer periphery of the buffer bar 7 along the opening edge of the slit 25. The buffer bar 7 is fixed by being sandwiched between the boundaries of the peripheral walls 17 of the first case 1A and the second case 1B so that the connecting ridge 7A is guided to the guide groove 26 of the slit 25 and is not displaced. The buffer bar 7 fixed here protrudes from the surface of the peripheral wall 17 of the exterior case 1. As shown in FIG. 9, the buffer bar 7 protruding from the outer case 1 first collides and absorbs the shock when it is accidentally dropped while being gripped and carried in a vertical posture. In particular, the buffer bar 7 shown in the figure also protrudes from the surface of the corner portion of the outer case 1, so that the shock can be reliably absorbed even when falling with the corner portion facing downward. As described above, the outer case 1 in which the rubber-like elastic buffer bar 7 is fixed can effectively prevent damage due to dropping.

  The grip 5 is hollow and has a storage portion 27 for the battery 4. The storage portion 27 of the grip 5 stores a rechargeable battery 4 made of a cylindrical battery. 3 and 4 accommodates a cylindrical battery made of two nickel metal hydride batteries connected in a straight line in series in the storage portion 27 of the grip 5. The battery 4 is, for example, two nickel metal hydride batteries having a full charge capacity of 2000 mAh to 5000 mAh, preferably 3200 mAh.

  Further, the illumination shown in the figure is provided with a beam light source 6 at one end of the grip 5 and a light switch 41 at the other end. The beam light source 6 is a light emitting diode 6A having a focusing lens. The beam light source 6 irradiates focused light in the axial direction of the grip 5. The light emitting diode 6 </ b> A is fixed to a fixed position of the outer case 1 through the insulating substrate 28. The insulating substrate 28 to which the light emitting diode 6A is fixed is sandwiched between the first case 1A and the second case 1B and fixed in place.

  The light switch 41 is a push button switch and is fixed to the opening at the rear end of the grip 5. The push button switch that is the light switch 41 is operated by pressing a portion exposed from an opening provided at the rear end of the grip 5. The light switch 41 is also sandwiched between the first case 1 </ b> A and the second case 1 </ b> B and is fixed at a fixed position of the outer case 1.

FIG. 10 shows a block circuit diagram of illumination. This illumination includes a solar cell 2, a rechargeable battery 4, a control circuit 40, a panel light source 3, and a beam light source 6. A light switch 41 is connected to the control circuit 40. Further, in the illustrated illumination, the solar cell 2 and the external input connector 42 are connected to the control circuit 40. The external input connector 42 is fixed to the side surface of the outer case 1. The external input connector 42 is connected to an AC adapter (not shown) and supplies power for charging the battery 4. Further, the control circuit 40 in the figure is connected to a USB connector 43 and a USB switch 44 that switches the output state of the USB connector 43. The USB connector 43 and the USB switch 44 are arranged close to each other on the side surface of the exterior case 1. When the USB switch 44 is pressed, the power of the battery 4 is converted into a predetermined voltage by the control circuit 40 and output from the USB connector 43. In the illumination of this circuit diagram, the battery 4 is charged by the solar battery 2, the full charge of the battery 4 is detected, and the charging of the battery 4 is terminated. Further, in a state where the AC adapter is connected to the external input connector 42, the battery 4 is charged with the power input from the AC adapter. Even in this state, charging is stopped when the battery 4 is fully charged. Further, the control circuit 40 changes the lighting state of the panel light source 3 and the beam light source 6 by an ON signal input from the light switch 41 of the push button switch. For example, every time the light switch 41 is pressed, the lighting of the panel light source 3 and the beam light source 6 is switched as follows.
Turn on the beam light source 6 → Turn off the beam light source 6 and turn on the nine light emitting diodes 30A of the panel light source 3 → Turn on the five light emitting diodes 30A of the panel light source 3 → Turn on one light emitting diode 30A of the panel light source 3 ON → Panel light source 3 is turned off.
When the light switch 41 is pressed and held while the beam light source 6 or the panel light source 3 is lit, the lit beam light source 6 and the panel light source 3 are turned off.

  Further, when both the light switch 41 and the USB switch 44 are pressed long, the control circuit 40 sends either or both of the panel light source 3 and the beam light source 6 to the SOS Morse signal (...---...). Flashes repeatedly. This lighting can emit a SOS Morse signal in the event of a distress and inform the distant by light.

It is a perspective view of the portable illumination concerning one Example of this invention. It is the back perspective view which looked at the portable illumination shown in Drawing 1 from the bottom. It is a disassembled perspective view of the portable illumination shown in FIG. It is a disassembled perspective view of the portable illumination shown in FIG. It is the sectional view on the AA line of the portable illumination shown in FIG. It is a BB sectional view of the portable illumination shown in FIG. It is a disassembled perspective view of the panel light source of the portable illumination shown in FIG. It is a bottom perspective view of the panel light source shown in FIG. It is a perspective view which shows the usage example of the portable illumination concerning one Example of this invention. It is a block circuit diagram of the portable illumination concerning one Example of this invention.

Explanation of symbols

1 ... exterior case 1A ... first case
DESCRIPTION OF SYMBOLS 1B ... 2nd case 2 ... Solar cell 3 ... Panel light source 4 ... Battery 5 ... Grip 6 ... Beam light source 6A ... Light emitting diode 7 ... Buffer bar 7A ... Connection protrusion 10 ... Planar part 11 ... 1st surface 12 ... 2nd Surface 13 ... Opening window 14 ... Opening window 15 ... Opening 16 ... Stepped portion 17 ... Peripheral wall 18 ... Boss 19 ... Boss 20 ... Set screw 21 ... Packing 22 ... Translucent plate 25 ... Slit 26 ... Guide groove 27 ... Storage part 28 ... Insulating substrate 30 ... Point light source 30A ... Light emitting diode 31 ... Reflector 31A ... Recess
31B ... Through hole 32 ... Diffusion plate 32A ... First diffusion plate
32a ... concave groove
32B ... Second diffuser plate 32b ... Recess 32x ... Outer peripheral wall 33 ... Insulating substrate 34 ... Inner plate 34A ... Storage section 34B ... Inner peripheral wall 35 ... O-ring 36 ... Set screw 40 ... Control circuit 41 ... Light switch 42 ... External input Connector 43 ... USB connector 44 ... USB switch

Claims (5)

The outer case (1), the rechargeable battery (4) built in the outer case (1), the solar battery (2) that charges the battery (4), and the light source that is lit by the battery (4) A portable illumination comprising:
The outer case (1) has a plate shape having a first surface (11) and a second surface (12) facing each other, and a solar cell (2) is provided on the first surface (11), and a second A panel light source (3) that irradiates light from a predetermined area is disposed on the surface (12) of the solar cell (2) and the panel light source (3) are disposed in a posture facing each other, and A portable illumination which is located on the outer periphery of the outer case (1) and is located outside the solar cell (2) and the panel light source (3) so as to incorporate the battery (4).   The outer case (1) is provided with an opening (15) extending along the outer side of the flat part (10) disposed in the solar cell (2) and the panel light source (3), and the outer side of the opening (15). The portable illumination according to claim 1, wherein the grip (5) is a battery (4) built in the grip (5).   The outer case (1) has a quadrangular outer shape, a grip (5) is provided along one side of the quadrilateral, and the flat surface portion (10) is a quadrilateral, where a rectangular solar cell (2) and a panel light source ( The portable illumination according to claim 2, wherein 3) is provided.   The portable illumination according to claim 2, wherein a beam light source (6) is provided at one end of the grip (5) of the outer case (1).   The portable illumination according to claim 2, wherein the outer case (1) is provided with a buffer bar (7) made of a rubber-like elastic body along a side edge opposite to the grip (5).

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