JP2006059663A - Lighting lamp - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting lamp which can be utilized for various usages and has a long-life and by which a sufficient illuminance can be obtained. <P>SOLUTION: The lighting lamp 100 is composed of a case 20 in which a substrate 10 mounted with a plurality of surface mounting diodes 1 and a drive circuit 2 for driving the surface mounting diodes 1 and a heat radiating insulating sheet 11 for radiating the heat of the substrate 10 are housed. The drive circuit 2 makes the surface mounting diodes 1 emit light by a flashing period that is not sensed by a human body, and uses the light emitted by the surface mounting diodes as a lighting light through a cover 21 formed of a member which transmits or diffuses the light. The substrate 10 is a substrate in which a flexible substrate and a plurality of substrates are connected and is formed in a prescribed shape. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an illumination lamp using a light emitting diode.

  Conventional illumination lamps are generally light bulbs or fluorescent lamps. In recent years, as described in Patent Document 1 and Patent Document 2, illumination lamps using light emitting diodes have been developed as liquid crystal displays for vehicle lamps and portable terminals.

Japanese Patent Laid-Open No. 2004-127689 JP 2001-318882 A

  However, conventional lighting fixtures such as light bulbs and fluorescent lamps have a problem that their lifetime is short, and miniaturization and portability are difficult. In addition, conventional lighting fixtures such as light bulbs and fluorescent lamps are formed in a predetermined shape, and there is a problem that they are limited to specific applications (flashlights, indoor lights, lanterns, etc.).

  On the other hand, illumination lamps using conventional light-emitting diodes have a long life and can be miniaturized and portable. However, as in liquid crystal displays such as vehicle lamps and portable terminals of Patent Document 1 and Patent Document 2, Is often used for applications that do not require much, and there is a problem that it is difficult to obtain sufficient illuminance. Moreover, the conventional illumination lamp using a light emitting diode also has a problem regarding heat generation of the light emitting diode.

  Therefore, the present invention provides an illuminating lamp that can be used for various purposes and can obtain a sufficient illuminance with a long lifetime.

Means and effects for solving the problems

  An illuminating lamp according to the present invention stores a substrate, a plurality of surface-mount diodes that emit illumination light disposed on a mounting surface of the substrate, the substrate and the surface-mount diode, and the mounting surface of the substrate. And a housing provided with a cover made of a material that transmits and diffuses light on the opposite surface, and the surface-mounted diode is caused to emit light at a blinking cycle that is not perceived by a human body by a driving circuit.

  According to this, a plurality of surface mount diodes arranged on a substrate are housed in a casing having a cover made of a material whose surface facing the mounting surface of the substrate transmits and diffuses light, and used as an illumination lamp. Therefore, it can be miniaturized and portable, has a long life, and can obtain sufficient illuminance.

  Moreover, the illuminating lamp according to the present invention may be configured to have two or more housings and to be opened and closed via a hinge portion in a manner in which the housings face each other.

  According to this, since the illumination lamp is formed in a foldable shape that can be opened and closed, it can be used as a thin illumination lamp that can be carried.

  Moreover, the illuminating lamp according to the present invention may be a flexible substrate in which the substrate is formed in a predetermined shape.

  According to this, since the substrate is a flexible substrate formed in a predetermined shape, the shape of the illumination lamp can be freely formed and can be used for applications other than the specific application.

  Moreover, the illuminating lamp according to the present invention may include a plurality of the substrates, and may be formed in a predetermined shape by connecting the plurality of substrates to each other.

  According to this, since a plurality of substrates are connected to each other (for example, interdigital) and formed into a predetermined shape, the shape of the lighting lamp can be freely formed and used for applications other than a specific application. Can do.

  Furthermore, in the illuminating lamp according to the present invention, the substrate may have a heat radiating means.

  According to this, since the substrate has a heat radiating means (for example, a heat radiating insulating sheet), it is possible to suppress the heat generation of the illumination lamp due to the driving of the plurality of surface mount diodes.

  Hereinafter, the best mode for carrying out the illumination lamp according to the present invention will be described with reference to a specific example with reference to the drawings. In addition, the surface mount diode used in the illumination lamp according to the embodiment described below is controlled so as to be repeatedly turned on and off at intervals that are not perceived by the human body by the drive circuit.

  First, the illumination lamp which concerns on 1st embodiment is demonstrated below based on FIGS. 1-3. FIG. 1 is a schematic cross-sectional view of the illumination lamp according to the first embodiment. FIG. 2 is a schematic view of a substrate when a flexible substrate is used. FIG. 3 is a schematic view of a substrate when a plurality of substrates are connected.

  As shown in FIG. 1, the illuminating lamp 100 includes a housing 20 that houses a plurality of surface-mounting diodes 1 and a substrate 10 on which a driving circuit 2 that drives the surface-mounting diodes 1 is mounted, and a heat radiation insulating sheet 11. Is done. The illumination lamp 100 is a thin fixed illumination lamp provided on a wall, ceiling, or road, a thin movable illumination lamp such as an advertising tower or a guide lamp, and a portable illumination such as a flashlight depending on the purpose of use (application). It can be applied to the form of a lamp.

  The surface-mount diodes 1 are arranged on the substrate 10 in a vertical and horizontal matrix. The surface mount diodes 1 are arranged in such a number that a predetermined illuminance is ensured according to the purpose of use (application). As the surface mount diode 1, for example, a white light emitting diode can be considered. The white light emitting diode is formed, for example, by applying a YAG phosphor on the surface of a blue light emitting diode. A part of blue light passes through the phosphor layer, and the rest collides with the phosphor to produce yellow light. Then, the mixed color (white) is emitted. In the present embodiment, the white light-emitting diode is described. However, the present invention is not limited to this, and it is possible to apply all types of light-emitting diodes that emit a suitable mixed color as illumination light. it can. Further, the arrangement form of the surface mount diode 1 does not have to be a matrix, and may be appropriately changed according to the purpose of use (use). That is, for example, it may be arranged in an annular shape or a straight line like a circular or rod-like fluorescent lamp.

  The substrate 10 is a printed circuit board, and the surface mount diode 1 and the drive circuit 2 are arranged on the mounting surface. In addition, the board | substrate 10 may be suitably changed according to a usage purpose (application), such as circular shape or an annular shape, and according to the arrangement form of the surface-mount diode 1. Here, the substrate 10 on which the surface mount diode 1 is arranged is not limited to a printed circuit board, but may be a flexible substrate 10 as shown in FIG. The flexible substrate 10 is a flexible substrate that can be bent. For example, the flexible substrate 10 is a substrate using a polyimide film using polyimide instead of an insulating plate. In this case, the substrate 10 can be freely formed according to the purpose of use (application). That is, the flexible substrate 10 is not limited to the form as shown in FIG. Further, it is not necessary to form the substrate planarly, and it may be formed in a three-dimensional manner like a lantern shape or a light bulb shape. Therefore, even if it replaces with the existing fluorescent lamp and light bulb currently used, it can be used without a sense of incongruity.

  Further, as shown in FIG. 3, a plurality of printed circuit boards 10 may be connected to each other in a comb shape. That is, in FIG. 1, a fixed illumination lamp in which the illuminance is specified in advance by arranging all the surface-mount diodes on one substrate. On the other hand, in FIG. 3, a unit board on which a predetermined number of surface mount diodes such as a single or a plurality of surface mount diodes are arranged can be added, and by increasing or decreasing the number of unit boards, a surface mount diode of a quantity corresponding to the size of the room and the required illuminance It can be set as a fixed illumination lamp provided with.

  For example, the drive circuit 2 is disposed on the mounting surface of the substrate 10 on which the surface-mount diode 1 is disposed. The drive circuit 2 is disposed on the mounting surface of the substrate 10, but is not limited thereto and can be changed as appropriate. The drive circuit 2 is a circuit that drives the surface-mounted diode 1, and controls the surface-mounted diode 1 to be turned on / off to cause the surface-mounted diode 1 to emit light at a blinking cycle that is not sensed by the human body. That is, the driving circuit 2 switches power from an AC power source such as a commercial power source or a DC power source such as a battery at a high speed and supplies it as driving power for the surface mount diode 1. The drive circuit 2 is connected to an AC power supply or DC power supply (not shown), and is configured to supply power from the AC power supply or DC power supply (not shown) to the surface-mount diode 1. The supply of power to the drive circuit 2 may be controlled by a power switch or the like (not shown).

  The heat radiation insulating sheet 11 is integrally disposed so as to be in contact with the surface on the back side of the surface on which the surface mount diode 1 and the drive circuit 2 of the substrate 10 are disposed. Then, heat generated by driving the surface mount diode 1 is dissipated. The heat radiation insulating sheet 11 is made of, for example, a silicone rubber having good insulation with a special filler blended in order to improve heat radiation. Further, the heat dissipation means of the substrate 10 is not limited to the heat dissipation insulating sheet 11, but a highly heat-dissipating paint (such as SiC) applied to the substrate as a film, a substrate itself (heat dissipating substrate) formed of a material with high heat dissipation, It may be a heat sink or fan.

  The housing 20 accommodates the substrate 10 on which the plurality of surface mount diodes 1 and the drive circuit 2 are mounted, and the heat dissipation insulating sheet 11. The housing 20 can be formed of a material according to the purpose of use (application), but the surface of the printed circuit board 10 facing the mounting surface on which the surface mounting diode 1 is mounted receives light emitted from the surface mounting diode 1. The cover 21 is formed of a member (polycarbonate or the like) that transmits and diffuses. The housing 20 may be appropriately changed according to the purpose of use (application), such as a rectangular shape, a circular shape, or an annular shape, and according to the arrangement form of the surface-mount diode 1 and the printed circuit board 10. good.

  Next, an illumination lamp according to a second embodiment will be described below based on FIG. FIG. 4 is a schematic view showing an illumination lamp according to the second embodiment. In addition, the same code | symbol is attached | subjected about the site | part same as the illumination lamp 100 which concerns on embodiment of 1st invention, and the description is abbreviate | omitted.

  As shown in FIG. 4, the illuminating lamp 200 is intended to be used as a portable openable / closable thin book-shaped illuminating lamp, and a plurality of surface-mounted diodes 1 and a drive circuit 2 for driving the surface-mounted diodes 1 are mounted. It is comprised from the two housings | casings 22 and 23 which are the structures similar to the housing | casing 20 which accommodated the board | substrate 10 and the thermal radiation insulation sheet 11. FIG. The two housings 22 and 23 are configured to be openable and closable via the hinge portion 24 in such a manner that the surfaces on which the surface mount diode 1 is mounted (that is, the respective covers 21 of the housings 22 and 23) face each other. Thus, it is configured to be a book shape.

  Further, the illumination lamp 200 is configured to include a power cord 2a that is connected to an AC power source on a side surface of the housing 23, and is surface-mounted via the drive circuit 2 that each of the housings 22 and 23 has power from the AC power source. Supply to the diode 1. Here, the hinge part 24 is configured such that the inside thereof can be wired so that the power from the power cord 2 a can be supplied to the drive circuit 2 included in the housing 22. In FIG. 2, the power cord 2 a is configured on the side surface of the housing 23, but is not limited thereto and can be changed as appropriate. The drive circuit 2 is provided on the substrate 10 accommodated in each of the housings 22 and 23, but is not limited thereto. That is, one drive circuit 2 may be provided on the substrate 10 accommodated in either one of the housings 22 and 23, and the surface-mount diode 1 mounted on each substrate may be driven.

  Thus, according to the illuminating lamp 100 according to the first embodiment and the illuminating lamp 200 according to the second embodiment, the plurality of surface-mount diodes 1 arranged on the substrate 10 are opposed to the mounting surface of the substrate 10. The surface is housed in a housing 20 having a cover 21 made of a material that transmits and diffuses light, and is used as an illumination lamp. Therefore, it can be miniaturized and portable, has a long life, and can obtain sufficient illuminance.

  Moreover, according to the illuminating lamp 100 according to the first embodiment and the illuminating lamp 200 according to the second embodiment, the heat radiation insulating sheet 11 is mounted on the surface of the printed circuit board 10 on which the surface mounting diode 1 and the driving circuit 2 are disposed. It is arrange | positioned integrally so that the surface of the back side of may be contacted. Therefore, heat generation of the illumination lamp due to driving of the plurality of surface mount diodes 1 can be suppressed.

  Furthermore, according to the illuminating lamp 200 according to the second embodiment, the illuminating lamp 200 is formed in a book shape in which the casing 22 and the casing 23 can be opened and closed via the hinge portion 24. Therefore, it can be used as a thin illumination lamp that can be carried.

  As mentioned above, although this invention is described in said preferable embodiment, this invention is not restrict | limited only to it. It will be understood that various other embodiments may be made without departing from the spirit and scope of the invention. Furthermore, in this embodiment, although the effect | action and effect by the structure of this invention are described, these effect | actions and effects are examples and do not limit this invention. In addition, the specific examples illustrate the configuration of the present invention and do not limit the present invention.

  For example, the illumination lamp of the present invention can have various forms depending on the purpose of use (use). For example, as shown in FIG. 5, an illumination lamp 300 similar to the illumination lamp 100 according to the first embodiment is installed at one end (the left end in FIG. 5) of a book cover 301 formed in a book shape. Thus, an illumination lamp that enables reading in a dark place by irradiating illumination light onto the book 302 set on the book cover 301 may be used.

  Further, for example, as shown in FIG. 6, the illumination lamp 200 according to the second embodiment connects the two housings 22 and 23 via the hinge 24 part so as to be opened and closed. The number is not limited to two. That is, as illustrated in FIG. 6, an illumination lamp 400 in which a plurality of housings 25 to 28 are connected to each other through hinge portions so as to be openable and closable may be used.

It is a schematic sectional drawing of the illumination lamp which concerns on 1st embodiment. It is the schematic of a board | substrate at the time of using a flexible substrate. It is the schematic of the board | substrate at the time of connecting a some board | substrate. It is the schematic which shows the illumination lamp which concerns on 2nd embodiment. It is the schematic which shows the illuminating lamp which concerns on other embodiment. It is the schematic which shows the illuminating lamp which concerns on other embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Surface mount diode 2 Drive circuit 10 Board | substrate 11 Radiation insulation sheet 20 Case 21 Cover 22 Case 23 Case 24 Hinge part 100 Illumination lamp 200 Illumination lamp 300 Illumination lamp 400 Illumination lamp

Claims (5)

A substrate,
A plurality of surface-mount diodes that emit illumination light disposed on the mounting surface of the substrate;
A housing that houses the substrate and the surface-mount diode and includes a cover made of a material that transmits and diffuses light on a surface facing the mounting surface of the substrate;
And the surface mount diode is caused to emit light at a blinking cycle that is not perceived by the human body by a driving circuit. Having two or more housings,
The illumination lamp of Claim 1 comprised so that opening and closing was possible via the hinge part in the aspect which the said housing | casings faced.   The illumination lamp according to claim 1, wherein the substrate is a flexible substrate formed in a predetermined shape. A plurality of the substrates;
The illumination lamp according to claim 1, wherein the plurality of substrates are connected to each other to be formed into a predetermined shape. The said board | substrate has a thermal radiation means, The illuminating lamp as described in any one of Claims 1-4 characterized by the above-mentioned.

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