JP2009183026A - Charger for portable electric apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a charger which protects a solar battery panel, and suppresses poor appearance resulting from a technological means for the protection, and a defect in the appearance of the solar battery panel. <P>SOLUTION: The charger 1 for a portable telephone comprises: a case 2; the solar battery panel 25; a spacer 19; an accumulator 28; a charging connector 21; and a charging/discharging control device. The case 2 containing the panel 25 comprises a cover member 11 and a base member 3 connected to the cover member. The cover member 11 has a lenticular lens (panel cover) 18 which transmits sunlight, and has a large number of micro lenses (transmission light control protrusions) 18a which reduces the visibility of the panel 25. The rear surface of the lens 18 and the light-receiving surface of the panel 25 opposite to the rear surface are prevented from brought into contact with each other by the spacer 19. The accumulator 28 for accumulating power generated by the panel 25 and the charging/discharging control device are stored in the case 2. The power generated by the panel 25 is accumulated in the accumulator 28 through the charging/discharging control device, and the power of the accumulator 28 is fed to the portable telephone in using the charging connector 21. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a charger used for charging a portable electric device such as a mobile phone, and more particularly to a charger for a portable electric device including a solar cell panel that obtains charging power by photoelectric conversion.

2. Description of the Related Art Conventionally, some mobile phone chargers are provided with a solar cell panel (solar panel). In this type of charger, a solar cell panel is disposed so as to cover substantially the entire surface of a body incorporating a storage battery, a control device for charging and discharging, and the like (see, for example, Patent Document 1).
Japanese Patent No. 3580806 (paragraphs 0011, 0019, FIGS. 1 to 3, 10, and 11)

  In the conventional charger, the solar cell panel exposed on the front surface of the body is easily damaged, and the solar cell panel is easily directly impacted when the charger is dropped.

  Then, although this inventor came to develop the charger which incorporates a solar cell panel in a case and protects this panel, it turned out that the subject which should be improved in the following points.

  In other words, a solar cell panel has a predetermined number of photoelectric conversion elements connected in series and arranged on one side of an insulating substrate, and the entire insulating substrate is buried and sealed in a black synthetic resin that passes a wavelength for photoelectric conversion. Therefore, due to the manufacturing process, discoloration or bleeding may occur on the surface (light receiving surface) of the solar cell, resulting in poor appearance.

  By the way, in the charger with a built-in solar cell panel, the case part facing the solar cell panel is made transparent to allow sunlight to pass, so the appearance of the solar cell panel is poor as described above In this case, the appearance defect is easily observed. Therefore, even if it is a solar cell panel with sufficient power generation performance, if the appearance of this panel is poor, the appearance of the charger is deteriorated, and the merchantability is adversely affected. Therefore, such a charger must be eliminated by visual inspection. Therefore, since the solar cell panel that can be used for the charger needs to be selected in advance by visual inspection, it tends to be difficult to effectively use the resources of the solar cell panel.

  Moreover, in a charger with a built-in solar cell panel, the solar cell panel is brought into contact with the transparent case part of the case that allows sunlight to enter so that the solar cell panel does not rattle. It is preferable. However, since the back surface of the transparent case portion and the surface (light receiving surface) of the solar cell panel have high smoothness, moire (interference fringes) may occur due to these contacts. In addition, the transparent case portion and the black solar cell panel may be partially in contact with each other due to the influence of temperature and humidity, and a black mottled pattern may be generated such that the contact portion appears in a line shape. . Visual observation of these moire and mottled patterns also deteriorates the appearance of the charger, and thus adversely affects the commerciality of the charger. Therefore, it is desirable to prevent this from happening.

  The objective of this invention is providing the charger for portable electric equipment which can suppress the fall of the appearance which can protect a solar cell panel from the technical means for this protection, and the external appearance defect of a solar cell panel. It is in.

  The invention of claim 1 is a solar cell panel that performs photoelectric conversion, and a case that incorporates the solar cell panel, and a cover member that has a translucent panel cover portion that faces the light incident surface of the solar cell panel. And a base member connected to the cover member, and allows the transmission of light having a wavelength for generating power to the solar cell panel over the entire surface of the panel cover portion, and allows a large number of transmissions to make the solar cell panel difficult to see. The case where the light control convex part is provided, a spacer that prevents the back surface of the panel cover part and the light receiving surface of the solar cell panel from contacting each other, and the solar cell panel that is built in the case generates power. A storage battery for storing electric power, a charging connector for supplying the electric power of the storage battery to the outside of the case, and built in the case; Together cause accumulated electrostatic the power to the storage battery, is characterized by comprising a charging and discharging control unit to output the power of the battery during use of the charging connector.

  In the invention of claim 1, since the solar cell panel is built in the case, the solar cell panel can be physically protected by this case. And many transmitted light control convex parts provided over the whole surface of the translucent panel cover part which opposes the solar cell panel of the cover member of a case are the light of the wavelength which generates power in the solar cell panel built in the case. Since the solar panel is allowed to penetrate and the solar panel is difficult to see, the solar panel can receive light such as sunlight that passes through the panel cover when power is generated by the solar panel. When viewed from the side, the light receiving surface of the solar cell panel can be made difficult to see through the panel cover portion. For this reason, even if the light-receiving surface of the solar cell panel is defective in appearance due to discoloration, bleeding, etc., it can be suppressed that it is noticeable and visually deteriorated. Furthermore, since the spacer is provided between the back surface of the panel cover portion and the light receiving surface of the solar cell panel, it is possible to suppress the appearance from being deteriorated as the generation of moire and mottled patterns due to these contacts is suppressed.

  According to a second aspect of the present invention, in the first aspect of the present invention, the spacer is at least one protrusion that is integrally projected from the back surface of the panel cover portion and is in contact with the solar cell panel.

  According to the second aspect of the present invention, since the spacer made of the protrusion is integrated with the panel cover portion, it is advantageous in assembling the charger and supports the solar cell panel so that it does not rattle the panel cover portion of the cover member. It is preferable in that it can be performed.

  According to the charger for portable electric devices of the inventions according to claims 1 and 2, the solar cell panel can be protected, and the technical means for this protection and the appearance of the solar cell panel are deteriorated due to poor appearance. There is an effect that can be suppressed.

  An embodiment of the present invention will be described with reference to the drawings.

  1 to 4, reference numeral 1 denotes a charger for a portable electric device, for example, a charger for a mobile phone (not shown). The charger 1 includes a case 2, a spacer 19, a charging connector 21, a solar battery panel 25, a storage battery 28, and a charge / discharge control device 35.

  The case 2 includes a base member 3 and a cover member 11 connected thereto.

  The base member 3 is made of an integrally molded product made of an opaque synthetic resin, for example. As shown in FIG. 2, FIG. 3 (A), and FIG. 4, the base member 3 has a side wall bent upward at the periphery, and the upper surface is opened. The fitting ribs 4 are respectively formed at a plurality of locations on the inner surface of the side wall 3 a extending in the longitudinal direction of the base member 3. These fitting ribs 4 extend in the vertical direction, and their upper end portions protrude from the upper end of the side wall 3a.

  An upward substrate support rib 5 and battery positioning rib 6 are formed on the inner side of the base member 3, and a plurality of, for example, three connecting projections 7 are projected from the base member 3. As shown in FIG. 2, the back side of the connecting projection 7 is open to the back side of the base member 3. Further, as shown in FIG. 3A, the base member 3 is formed with a connector housing portion 8. The connector housing portion 8 is opened on the back surface of the base member 3.

  A charging connector 21 shown in FIGS. 3A and 4 is detachably accommodated in the connector accommodating portion 8 from the back side of the base member 3. The charging connector 21 has a connecting portion 21a that is detachably inserted and connected to a power receiving portion of a mobile phone (not shown). The cord 21b included in the charging connector 21 is drawn into the case 2 through the connector housing portion 8, and is connected to a charge / discharge control device 35 described later. In FIG. 4, reference numeral 8 a indicates an in-case retracting portion of the cord 21 b formed in the connector housing portion 8. By connecting the connecting portion 21a of the charging connector 21 to a mobile phone, the power stored in the storage battery 28 described later is supplied to the mobile phone.

  In addition, according to the structure in which the case 2 has the connector housing portion 8 as described above, the charging connector 21 in a non-use state can be housed and held in the connector housing portion 8, so that the appearance of the charger 1 is good, and this This is advantageous in that the charging connector 21 does not get in the way when the charger 1 is stored. However, in the present invention, the connector housing portion 8 can be omitted and the case 2 can be reduced in size, and the charging connector 21 can be provided in a state of being pulled out of the case 2.

  The cover member 11 as a whole is made of an integrally molded product of a translucent material such as a transparent acrylic resin. The cover member 11 has a side wall that is bent downward at the periphery, and is made the same size as the base member 3 when viewed from above. As shown in FIG. 7 and the like, a plurality of substrate pressing ribs 12 and a single indicator lamp pressing rib 14 protrude downward from the peripheral rear surface of the cover member 11.

  Three screw receiving bosses 15 project downward from the back surface of the peripheral portion of the cover member 11 so as to correspond to the connecting projections 7. Furthermore, as shown in FIGS. 4, 6, and 7, the cover member 11 has a pressing operation section 16 that is partitioned by a U-shaped slit 16a on the periphery thereof. The pressing operation part 16 can be bent and deformed in the inner direction of the case 2 when pressed from above. As shown in FIGS. 6 and 7, a pressing convex portion 16 b is projected from the back surface of the pressing operation portion 16.

  As shown in FIG. 7, the cover member 11 has a square annular rib 17 that divides the peripheral portion and the inside thereof, and occupies substantially the same region as the inner region surrounded by the rib 17 so as to be translucent. A panel cover portion such as a lenticular lens portion 18 is formed. Therefore, the peripheral part of the cover member 11 also serves as the collar (peripheral part) of the lenticular lens part 18.

  As shown in FIGS. 3A and 3B, the lenticular lens portion 18 includes a lens group in which a large number of transmitted light control convex portions, for example, bowl-shaped microlenses 18a are arranged in parallel on the surface (light incident surface). As shown in FIGS. 2 and 3A, the back surface 18b of the lenticular lens portion 18 is formed as a flat surface. As shown in FIG. 3B, the radius R of the micro lens 18a is in the range of (0.75 ± 1.00) mm, preferably (0.75 ± 0.02) mm. Therefore, the microlenses 18a are arranged at a pitch P of [(0.75 ± 1.00) × 2] mm, preferably at a pitch P of [(0.75 ± 0.03) × 2] mm. When the pitch P of the microlenses 18a is (0.75 ± 0.02) mm, the depth D of the valley formed between the adjacent microlenses 18a is preferably (0.50 ± 0.02) mm.

  When the radius R of the minute lens 18a is smaller than the lower limit value of the dimension range, the mold cost increases as the mold of the lenticular lens portion 18 becomes finer, and the molding cost of the cover member 11 increases. On the contrary, when the radius R of the micro lens 18a is larger than the upper limit value of the dimension range, it is difficult to practically and sufficiently obtain a performance that makes it difficult to visually observe the solar cell panel 25, which is not preferable.

  In this embodiment, the lenticular lens portion 18 is formed integrally with the cover member 11, but instead of this, the cover member 11 includes a frame portion corresponding to the peripheral portion of the cover member 11 and the frame portion. It is also possible to form with a lenticular lens portion 18 that is molded separately and integrated with the frame portion with an adhesive or the like. In this case, the peripheral portion of the cover member 11 can be made of a synthetic resin that does not have translucency. Thereby, the visual observation of the case built-in through the peripheral portion of the cover member 11 can be prevented, and the color of the cover member 11 can be arbitrarily set, so that the design of the charger 1 can be improved.

  In the present embodiment, the spacer 19 protrudes integrally with the back surface 18 b of the lenticular lens portion 18. There may be at least one spacer 19 made of this protrusion, but a plurality of, for example, five locations as shown in FIG. Each spacer 19 is disposed directly behind the saddle-shaped microlens 18a. Alternatively, the spacers 19 may be provided so as to face the valleys between the microlenses 18a across the adjacent microlenses 18a. In this case, the spacer 19 is preferably enlarged by the micro lens 18a so that the spacer 19 is not visually recognized.

  In the present invention, the spacer 19 is not limited to be provided on the lenticular lens portion 18 that forms the panel cover portion. For example, a convex portion protruding from the inner peripheral surface of the annular rib 17 at an intermediate height position may be used as the spacer 19. In this case, the spacers 19 made of convex portions are provided continuously or at intervals along the circumferential direction of the rib 17. Alternatively, it is also possible to apply an adhesive tape or the like having a predetermined thickness on the back surface of the peripheral portion of the lenticular lens portion 18, or preferably on the peripheral portion of the solar cell panel 25 described later, and use it as the spacer 19. However, according to the configuration in which the spacers 19 made of protrusions are formed integrally with the lenticular lens portion 18 as in the present embodiment, there is no need for bonding and the like, which is advantageous in assembling the charger 1 and the lenticular lens. It is preferable at the point which can support the below-mentioned solar cell panel 25 on the back surface 18b of the part 18. FIG.

  The base member 3 and the cover member 11 are combined with each other with their open surfaces. In this combination, the upper end portion of each fitting rib 4 of the base member 3 is engaged with the inner surface of the side wall of the cover member 11 so that the cover member 11 is positioned with respect to the base member 3. . In this state, the base member 3 and the cover member 11 are coupled by the plurality of coupling screws 9 to assemble the case 2. As shown in FIG. 2, the connecting screw 9 is inserted into the connecting convex portion 7 from the back side of the base member 3 and is screwed to the screw receiving boss 15 of the cover member 11.

  In this case 2, the solar cell panel 25, the storage battery 28, the vibration damping member 31, and the charge / discharge control device 35 are incorporated.

  At least one (one in this embodiment) solar cell panel 25 is used. In the solar cell panel 25, a predetermined number of photoelectric conversion elements are connected in series and arranged on one side of an insulating substrate, and the entire insulating substrate is sealed by being embedded in a black synthetic resin that passes a wavelength for photoelectric conversion. Is formed. The solar cell panel 25 is, for example, approximately the same size as the lenticular lens portion 18, is positioned by being fitted inside the annular rib 17, and faces the back surface 18 b of the lenticular lens portion 18. Closely arranged.

  The storage battery 28 stores electric power generated by the solar battery panel 25, and is positioned by the battery positioning rib 6 and accommodated in the base member 3. With this accommodation, the storage battery 28 is disposed below the solar cell panel 25 as shown in FIGS. 2 and 3A.

  The damping member 31 is made of a material that can be elastically deformed, for example, a sponge-like foam of urethane resin or rubber, and is smaller than the storage battery 28. The damping member 31 is, for example, in surface contact with each of the solar cell panel 25 and the storage battery 28 and sandwiched between them in a compressed state. The solar cell panel 25 is pressed against the spacer 19 by the elastic force of the vibration damping member 31, and the storage battery 28 is pressed against the inner bottom surface of the base member 3. The damping member 31 is compressed as the case 2 is assembled by tightening the connecting screw 9 described above.

  Thereby, the solar cell panel 25 and the storage battery 28 are held in the case 2 so as not to rattle vertically. At the same time, due to the frictional force between the solar cell panel 25 and the storage battery 28 and the damping member 31, the solar cell panel 25 and the storage battery 28 are horizontally arranged in the case 2 in FIGS. 2 and 3A. It is held so that it does not rattle. Further, by pressing the solar cell panel 25 against the spacer 19 integrally formed with the lenticular lens portion 18 as described above, the position of the solar cell panel 25 with respect to the lenticular lens portion 18 can be accurately determined with respect to the thickness direction of the case 2. I can decide.

  The charge / discharge control device 35, the solar cell panel 25, the storage battery 28, and the charge connector 21 are electrically connected. The charge / discharge control device 35 is formed by mounting required circuit components 37 (only some of the circuit components are shown in FIG. 4) on the printed wiring board 36, and stores the power generated by the solar cell panel 25 as a storage battery. 28, and a discharging circuit unit for outputting the power of the storage battery 28 in order to charge the mobile phone when the charging connector 21 is used. Furthermore, the charge / discharge control device 35 has a monitor switch 38 for battery monitoring mounted on the printed wiring board 36 and, for example, three indicator lights 39a to 39c.

  As shown in FIGS. 5 and 6, the charge / discharge control device 35 is placed on the substrate support rib 5 of the base member 3, and is sandwiched between the substrate support rib 5 and the substrate pressing rib 12 of the cover member 11. ing.

  The monitor switch 38 is disposed immediately below the pressing convex portion 16b on the back surface of the pressing operation portion 16, and is pressed by the pressing convex portion 16b to be turned on when the pressing operation portion 16 is pressed. When the monitor switch 38 is turned on, the indicator lights 39a to 39c are made to emit light by the power of the storage battery 28. The indicator lamps 39a to 39c are formed of light emitting elements such as LEDs (light emitting diodes). When the power of the storage battery 28 is, for example, 70% to fully charged, all the indicator lights 39a to 39c emit light, and when the power of the storage battery 28 is 30% to 70%, the indicator lights 39a, When 39b is emitted and the power of the storage battery 28 is less than 30%, only the indicator lamp 39c is turned on. Therefore, the user can roughly know the state of the battery capacity of the storage battery 28 from the light emission of the indicator lamp when the monitor switch 38 is turned on.

  In order to make it easy to visually recognize the light emission state, the tip portions of the indicator lights 39a to 39c are slightly outside the case 2 through the mating surfaces of the base member 3 and the side wall of the cover member 11 as shown in FIGS. It is protruding. In this embodiment, since the peripheral portion of the cover member 11 also has translucency, the display performance by light emission is high, and the position of the monitor switch 38 can be seen through, so that the translucent press It is easy to recognize the position of the operation unit 16. Further, the leads of the indicator lamps 39a to 39c are pressed from above by the indicator lamp pressing rib 14 as shown in FIG.

  Since the battery charger 1 having the above-described configuration incorporates the solar cell panel 25 in the case 2, the solar cell panel 25 can be physically protected by the case 2. That is, the cover member 11 can prevent the solar cell panel 25 from being damaged, and the cover member 11 of the case 2 can prevent the solar cell panel 25 from being directly damaged when the charger 1 is dropped. it can. Moreover, since the vibration damping member 31 that presses and holds the solar cell panel 25 against the spacer 19 provided on the cover member 11 can be elastically deformed, an impact acting on the solar cell panel 25 when the charger 1 falls is applied. Further, it can be relaxed by elastic deformation of the damping member 31.

  In the charger 1 having the above-described configuration, the portion of the cover member 11 of the case 2 facing the solar cell panel 25 is a lenticular lens portion 18. The light is refracted by each microlens 18a of the lenticular lens unit 18, so that when the charger 1 is viewed from the front, the light receiving surface (light incident surface) formed from the front surface of the solar cell panel 25 becomes difficult to see.

  For this reason, even if the light-receiving surface of the solar cell panel 25 is defective in appearance due to discoloration, bleeding, or the like, it can be suppressed that the appearance of the charger 1 is deteriorated by being visually recognized. Thereby, even if it is a case where the solar cell panel 25 with a bad external appearance is used, the fall of the commercial property caused by appearance can be suppressed. At the same time, since it becomes possible to use the solar cell panel 25 with poor appearance, the number of solar cell panels 25 discarded due to the poor appearance is reduced, so that resources can be used effectively.

  Moreover, although the solar cell panel 25 is pressed against the lenticular lens portion 18 from the back side as the case 2 is assembled, the solar cell panel 25 hits the spacer 19 and the flat surface of the lenticular lens portion 18. The flat light-receiving surface of the solar cell panel 25 is positioned so as not to be in close contact with the back surface 18b. This suppresses the generation of moire (interference fringes) due to surface contact between the back surface 18b of the lenticular lens portion 18 and the light receiving surface of the solar cell panel 25, and the occurrence of mottled patterns due to the contact between the two surfaces. And since they are not visually observed through the lenticular lens part 18, the fall of the commercial property caused by the appearance of the charger 1 can be suppressed.

  Moreover, since the charger 1 is placed so that the cover member 11 receives sunlight, the sunlight passes through the lenticular lens portion 18 and is received by the solar cell panel 25. Therefore, the solar cell panel 25 generates power. To do. The generated power is stored in the storage battery 28 via the charging circuit unit of the charge / discharge control device 35.

  Therefore, the charging connector 21 is pulled out from the connector housing portion 8 of the case 2 in such a power generation state or a state in which it is confirmed that the power stored in the storage battery 28 is sufficient as the monitor switch 38 is pressed. By connecting to the power receiving unit of the mobile phone, the power of the storage battery 28 is supplied to the mobile phone via the discharging circuit unit of the charge / discharge control device 35 to charge the phone storage battery built in the mobile phone. Can do.

  The present invention is not limited to the one embodiment. For example, as described in the embodiment, the lenticular lens portion (panel cover portion) 18 is a linear saddle-shaped minute parallel to one side of the lenticular lens portion 18 as a transmitted light control convex portion or the other side perpendicular thereto. Although it has the lens 18a, the structure demonstrated below may be sufficient as the translucent panel cover part which opposes the solar cell panel 25. FIG. That is, a panel cover portion in which a large number of transmitted light control convex portions corresponding to microlenses and having a semicircular cross section, a triangular shape, or a trapezoidal shape are provided over the entire surface independently of each other Can be used. In this case, a large number of transmitted light control projections that cause the light transmitted through the panel cover portion to be refracted can be arranged in an arbitrary arrangement, and can be randomly arranged without regularity. It is.

  Further, the panel cover portion (lenticular lens portion 18) has a configuration opposite to that of the above-described embodiment, that is, a configuration in which the surface has a flat surface and a transmitted light control convex group such as a micro lens 18a is provided on the back surface. You can also In this case, it is difficult for dust to adhere to the valleys of the transmitted light control convex portions (microlenses 18a) group, and the surface is easy to clean, so that light transmission through the panel cover portion (lenticular lens portion 18). This is preferable in that the performance is easily maintained over a long period of time.

1 is a perspective view showing a mobile phone charger according to an embodiment of the present invention. Sectional drawing of the charger which follows F2-F2 line in FIG. (A) is sectional drawing of the charger which follows F3-F3 line in FIG. (B) is sectional drawing which expands and shows the F3B part of FIG. 3 (A). The perspective view which decomposes | disassembles and shows the charger of FIG. Sectional drawing of the charger which follows F5-F5 line | wire in FIG. Sectional drawing of the charger which follows F6-F6 line in FIG. The perspective view which shows the cover member which the case of the charger of FIG. 1 had seen from the back side.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Charger, 2 ... Case, 3 ... Base member, 11 ... Cover member, 18 ... Lenticular lens part (panel cover part), 18a ... Micro lens (transmitted light control convex part), 19 ... Spacer, 21 ... Charge connector 25 ... solar cell panel, 28 ... storage battery, 35 ... charge / discharge control device

Claims (2)

A solar cell panel for photoelectric conversion;
A case incorporating this solar cell panel, comprising a cover member having a translucent panel cover portion facing the light incident surface of the solar cell panel, and a base member connected to the cover member The case provided with a plurality of transmitted light control convex portions that allow transmission of light having a wavelength for generating power to the solar cell panel over the entire surface of the panel cover portion and make the solar cell panel difficult to see,
A spacer that prevents the back surface of the panel cover portion and the light receiving surface of the solar cell panel from contacting each other;
A storage battery that stores power generated by the solar cell panel built in the case;
A charging connector for supplying power of the storage battery to the outside of the case;
A charge / discharge control device that is built in the case and stores the power generated by the solar cell panel in the storage battery, and that outputs the power of the storage battery when the charging connector is used,
A charger for a portable electric device, comprising:   2. The charger for portable electric device according to claim 1, wherein the spacer is at least one protrusion that protrudes integrally from the back surface of the panel cover portion and contacts the solar cell panel.

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