JP2010073334A - Portable led lamp - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an LED lamp that normally functions as a lighting lamp of an installation type or the like or functions as an emergency lamp during a power outage, and can be used as a flashlight when detached from a socket. <P>SOLUTION: The LED lamp 1 can be used as an installation type luminaire by attaching it to a socket installed on a ceiling like an incandescent lamp. The LED lamp is configured such that a power supply is switched to a built-in emergency power supply 14 by a charge switching circuit 13 during a power outage so as to function as an emergency lamp by maintaining a lighting state that an LED 5 emits light. In that state, the operation of a manually operated switch 6 becomes effective, thereby allowing the LED lamp 1 to be used like a flashlight by detaching the LED lamp 1 from the socket. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an LED lamp that is used by being attached to a socket or the like installed on the ceiling of a room, and the like. About.

In recent years, instead of incandescent bulbs and fluorescent tubes, LED lamps that consume less power and have a long lifetime have begun to spread. Patent Document 1 proposes an LED lamp having a base portion that can be attached to a socket to which an incandescent bulb is attached so that it can be used in place of an existing incandescent bulb. Patent Document 2 proposes an emergency lighting device that is equipped with a battery and causes the LED to emit light when a power failure occurs. On the other hand, Patent Document 3 proposes an LED lamp that can be used in place of a light bulb for a flashlight.
JP 2005-222750 A Japanese Patent Laid-Open No. 09-260070 JP 2005-116379 A

  Here, the flashlight cannot be used in an emergency such as a power failure unless it is placed in an easy-to-understand place, so it must be placed where it can be seen. However, since it is not used at all times, it often gets in the way if it is placed in a visible place. Even if the location is known, it is extremely inconvenient to search for a flashlight in the dark when a power failure occurs.

  In view of such a point, the problem of the present invention is that it can function as an illumination lamp at all times, function as an emergency light in an emergency such as a power failure, and be carried and used as a flashlight as it is. It is to propose an LED lamp that can be used.

In order to solve the above problems, the LED lamp of the present invention is
A lamp case for gripping,
A base part for supplying AC power attached to the rear end of the lamp case;
A lamp cover attached to the front end of the lamp case;
An LED covered by the lamp cover;
An emergency power supply for lighting the LED built in the lamp case;
An AC / DC converter that converts an alternating current supplied through the base portion into a direct current and supplies the direct current to the LED;
And a manual operation switch for turning on and off the power supply from the emergency power supply to the LED.

  Similar to the incandescent lamp, the LED lamp of the present invention can be used as a stationary illumination lamp by screwing a base into a socket attached to the ceiling, wall, etc. of the room. It can also be removed from the socket and used as a flashlight.

  Here, the LED lamp of the present invention has a switching circuit that controls on / off of the power supply from the emergency power supply to the LED, and the switching circuit always supplies power from the emergency power supply to the LED. The supply is kept off, and when the power supply from the AC power supply is cut off, the supply is switched on.

  When the LED lamp is used as a stationary lighting fixture attached to a room, etc., if the power supply from the AC power supply is cut off in the event of an emergency such as a power failure, the lighting state is maintained by the emergency power supply. . Therefore, the LED lamp functions as an emergency light.

  Further, in the event of a power failure, the lit LED lamp can be removed from the socket and carried as a flashlight. Since the LED lamp is turned on, unlike the case of searching for a flashlight in the dark at the time of a power failure, there is no need to search for the LED lamp, and the operation of removing the LED lamp from the socket can be performed quickly and easily.

  Next, in the portable LED lamp of the present invention, the switching circuit is configured to supply power from the emergency power supply to the LED by the manual operation switch in a state where power supply from the AC power supply is cut off. It is characterized by enabling on / off operation.

  When the LED lamp is removed and used, the power supply from the AC power supply is cut off, and the power supply is switched to the built-in emergency power supply by the switching circuit. Therefore, after removal, the operation of the manual operation switch becomes effective, and the LED lamp can be used in the same manner as a normal flashlight by turning on and off with the manual operation switch.

  Next, in the LED lamp of the present invention, the emergency power source is a rechargeable power source that is charged by power supplied from the AC power source side. Since it can always be kept in a charged state in a state where it is used as a normal lighting fixture, it is possible to prevent the adverse effect of not functioning due to a dead battery.

  Moreover, the LED lamp of the present invention is characterized in that the base part can be screwed and fixed to a socket part of an incandescent bulb. This is convenient because the LED lamp of the present invention can be used in place of the existing incandescent lamp.

  The LED lamp of the present invention can be used as a lighting fixture such as an installation type similar to a normal incandescent lamp by being attached to a socket installed on the ceiling of the room, etc., and used as a flashlight when removed from the socket Can do. Therefore, it is possible to eliminate the inconvenience that it is impossible to use because the location is unknown in an emergency, and that it is necessary to secure a visible location as a location for the flashlight.

  Embodiments of an LED lamp to which the present invention is applied will be described below with reference to the drawings.

  FIG. 1 is a perspective view showing an LED lamp according to the present embodiment. The LED lamp 1 includes a cylindrical lamp case 2 made of a material such as a heat-resistant resin, and a base portion 3 serving as an AC power input portion is coaxially attached to the rear end of the lamp case 2. The base part 3 has the same dimensions as the base part of a normal incandescent lamp, and can be attached instead of the incandescent lamp.

  A lamp cover 4 that spreads forward is coaxially attached to the front end of the lamp case 2. The lamp cover 4 is made of, for example, resin, and includes a reflecting mirror portion 4 a having a curved inner peripheral reflecting surface, and a diffusion plate 4 b that seals the injection opening on the front surface. A plurality of LEDs 5 are arranged in the central portion of the lamp cover 4.

  The lamp case 2 functions as a grip portion for gripping the LED lamp 1, and a manual operation switch 6 for switching on / off is disposed on the outer peripheral surface of the lamp case 2. As will be described later, the operation of the manual operation switch 6 becomes effective in a state where the LED lamp 1 is disconnected from the AC power supply.

  FIG. 2 is a schematic block diagram showing an LED drive control circuit of the LED lamp 1. The LED drive control circuit 10 includes a rectifier circuit 11 including an AC / DC converter, to which an alternating current, for example, an alternating current of 100 volts is supplied via the base part 3. In the rectifier circuit 11, the alternating current is converted into a direct current of a predetermined voltage, and the converted direct current is supplied to the charging / switching circuit 13 via the input detection circuit 12. When the supply of the direct current from the rectifier circuit 11 is interrupted, the input detection circuit 12 supplies an interruption detection signal 12S1 to the charging / switching circuit 13. Further, the input detection circuit 12 supplies the cutoff release detection signal 12S2 to the charging / switching circuit 13 when the supply of the direct current from the rectifier circuit 11 is resumed.

  An emergency power source 14 is connected to the charging / switching circuit 13 and is normally driven by a direct current supplied from the rectifier circuit 11 and causes the LED 5 to emit light using the direct current. When the shutoff detection signal 12S1 is input from the input detection circuit 12, the power source is switched to the emergency power source 14, and the LED 5 is driven using the emergency DC current while being driven by a DC current of a predetermined voltage supplied therefrom. Make it emit light. Further, when the shutoff release detection signal 12S2 is input from the input detection circuit 12, the power source is switched to the AC power source side again and driven by the DC current supplied from the rectifier circuit 11, and the LED 5 is caused to emit light using the DC current. Let

  In this example, the emergency power supply 14 is a rechargeable power supply, for example, a secondary battery. When the AC power source is used as the LED driving power source, the charging / switching circuit 13 charges the emergency power source 14 with the DC current supplied from the rectifying circuit 11 and always maintains the fully charged state.

  Here, the manual operation switch 6 is connected to the charging / switching circuit 13, and when the manual operation switch 6 is operated, a switching signal 6 </ b> S is supplied to the charging / switching circuit 13. When the interruption detection signal 12S1 is input from the input detection circuit 12 and the emergency power supply 14 is used as the LED drive power supply, the charging / switching circuit 13 receives the switching signal 6S by the operation of the manual operation switch 6. The power supply from the emergency power supply 14 to the LED 5 is switched off. In this state, when the manual operation switch 6 is operated again and the switching signal 6S is input, the charging / switching circuit 13 switches on the power supply from the emergency power supply 14 to the LED 5. In the normal state in which the cutoff release detection signal 12S2 is input from the input detection circuit 12 and the power source is switched to the AC power source side, the input operation of the manual operation switch 6 is invalidated.

  Instead of the incandescent lamp, the LED lamp 1 having this configuration can be attached to a socket (not shown) of the incandescent lamp and used as a normal installation type lighting fixture. When an emergency such as a power failure occurs during use and the supply of alternating current is interrupted, the power source is switched to the built-in emergency power source 14 and the lighting state is maintained.

  In this state, when the portion of the lamp case 2 of the LED lamp 1 is grasped and the LED lamp 1 is removed from the socket, the LED lamp 1 can be used as a flashlight which is a portable lighting device. In the state where the emergency power supply 14 is used, the operation of the manual operation switch 6 is valid, and when the manual operation switch 6 is operated, the LED lamp 1 in the lit state can be switched to the off state. When the manual operation switch 6 is operated again, it can be switched to a lighting state and can be handled in the same manner as a normal flashlight.

  When the LED lamp 1 is screwed into the removed socket again after the power failure is released, it functions again as a normal installation-type lighting fixture. That is, when an alternating current is supplied through the cap portion 3, the cutoff release detection signal 12S2 from the input detection circuit 12 is input to the charging / switching circuit 13, and the power source is switched from the built-in emergency power source to the AC power source side. The manual operation switch 6 returns to the invalid state.

  As described above, the LED lamp 1 functions as a stationary lighting fixture attached to the ceiling or wall of a room, and functions as a flashlight by being removed.

  In addition, since the drive power source is switched to the built-in emergency power source at the time of a power failure, the lighting state can be maintained and it can be used as illumination at the time of a power failure. In this case, the lit LED lamp can be removed and used as a flashlight, so there is no need to search for the flashlight in the dark. Also, you don't have to forget where the flashlight is and look for it in the dark.

  Furthermore, since LED lamps are normally used as stationary lighting fixtures, they do not need to be kept in place like flashlights, and are easy to use so that they can be easily used in an emergency. This is convenient because it does not cause a negative effect of getting in the way as usual.

(Other embodiments)
The above embodiment is an example of a case where the lamp is used as a stationary lamp attached to a ceiling, a wall, etc. For example, the LED lamp of the present invention may be used as a lamp of a desk lamp that is mounted on a table or the like. Of course it is possible.

  In the above embodiment, a plurality of LEDs 5 are connected in series. It is also possible to use a single LED 5, and it is also possible to use a plurality of LEDs connected in series connected in parallel. Further, as LEDs, red, green, and blue LEDs can be used to emit color light other than white light. Of course, it is also possible to use LEDs of other luminescent colors.

  Next, it is also possible to arrange a manual operation switch and an automatic changeover switch in series on the drive power supply line from the emergency power supply 14 to the LED 5. In this case, the automatic changeover switch may be kept in the off state so that the automatic changeover switch is turned on when the alternating current is interrupted. In this case, the manual operation switch may always be urged to be turned on by a spring force or the like, and may be turned off only when the manual operation switch is operated.

It is an external view of the LED lamp to which this invention is applied. It is a schematic block diagram of the LED drive control circuit of the LED lamp of FIG.

Explanation of symbols

1 LED lamp 2 Lamp case 3 Base 4 Lamp cover 5 LED
6 manual operation switch 6S switching signal 10 LED drive control circuit 11 rectifier circuit 12 input detection circuit 12S1 cutoff detection signal 12S2 cutoff release detection signal 13 charging / switching circuit 14 emergency power supply

Claims (5)

A lamp case for gripping,
A base part for connecting an AC power source attached to a rear end of the lamp case;
A lamp cover attached to the front end of the lamp case;
An LED covered by the lamp cover;
An emergency power supply for lighting the LED built in the lamp case;
An AC / DC converter that converts an alternating current supplied through the base portion into a direct current and supplies the direct current to the LED;
A portable LED lamp comprising: a manual operation switch operated to turn on and off power supply from the emergency power supply to the LED. The portable LED lamp according to claim 1,
It has a switching circuit for on / off control of power supply from the emergency power supply to the LED
The portable LED lamp characterized in that the switching circuit always keeps the power supply from the emergency power supply to the LED off and switches on when the power supply from the AC power supply is cut off. The portable LED lamp according to claim 2,
The switching circuit enables the power supply from the emergency power supply to the LED to be turned on / off by the manual operation switch in a state where the power supply from the AC power supply is cut off. LED lamp. The portable LED lamp according to any one of claims 1 to 3,
The portable LED lamp, wherein the emergency power source is a rechargeable power source charged by power supplied from the AC power source side. The LED lamp according to any one of claims 1 to 4,
A portable LED lamp, wherein the base part can be screwed and fixed to a socket part of an incandescent bulb.

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