JP2013098162A - Led lighting device adaptable to d through aaaa battery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem of a lighting tool using a light bulb or an LED available on the market, that because its usable battery size is limited, it cannot use batteries of all of five different sizes, giving rise to the advent of a lighting tool which is adaptable to any battery size on hand from a D battery to an AAAA battery in a single tool, so that it can be used in an emergency such as a power outage.SOLUTION: A voltage boost electronic circuit for turning on a white LED with a single battery is mounted on the top face of a double-sided printed board, and butyl rubber bands having superior durability and electrical resistance are put on hooks at four corners of the double-sided printed board having a positive battery pole contact provided on its reverse side and those of a board for a negative battery pole contact of the same size, with a battery held in place between the two boards as a battery holder. In this way, a lighting tool adaptable to any size of battery from a D battery to an AAAA battery can be composed to achieve the above objective.

Description

  The present invention relates to a battery-powered LED lighting device.

  Lighting devices that can use a plurality of batteries of different sizes already exist as products. In addition, there are products in which AA or AA batteries are housed in a plastic case that is the same size as the AA or AA battery, and can be substituted for AA or AA batteries. There is still no device that can be lit to accommodate any one size up to 5 batteries.

  A commercially available lighting device using a light bulb or LED has a specified battery size, and it has been impossible to use batteries of five different sizes. The issue is the emergence of a lighting device that can be used with any battery size, from single batteries to single batteries, so that it can be used urgently during a power failure.

  A double-sided printed circuit board with a voltage boosting electronic circuit for lighting a white LED on a single battery attached to the upper surface of the double-sided printed circuit board and a back surface as a battery positive electrode contact, and a battery negative electrode substrate of the same size A lighting fixture that can be used from single batteries to single batteries by putting a battery holder with a butyl rubber rubber band with excellent durability and electrical insulation on the hooks provided at the corners of the two sheets. The problem was solved by configuring.

  Even if there is no spare battery of the size required for use with existing lighting fixtures, the present invention can illuminate a white LED for a long time if there is one AAA battery to one AAA battery. By simplifying to the minimum, it can be stored in a small space as emergency equipment. It is possible to provide a practical and resource-saving lighting fixture that does not go out of fashion and globally for a long time.

  The perspective view which showed the basic structure of this invention.   The perspective view which showed the use condition and applicable battery of this invention.   The voltage booster circuit diagram for white LED lighting used for this invention.

  FIG. 1 shows the basic structure of the present invention. Among two printed circuit boards of the same size, a booster circuit cover 11 of an upper printed circuit board 7 using a double-sided material has a white battery with 1.5V in one battery. A voltage booster circuit chip component shown in FIG. 3 for lighting the LED is attached. The back surface of the printed circuit board 7 serves as a battery positive electrode contact, and is connected to the upper surface electronic circuit through a through hole. In order to light a white LED with one 1.5V battery, it is necessary to boost the LED to a VF of about 3.3V. Although boosting is the simplest method using a switching regulator device, the present invention does not have a battery reverse insertion prevention structure in order to simplify the battery holder. Most switching regulator devices that are currently available do not support protection against reverse connection of the power supply. Therefore, if a reverse current is applied, the switching regulator device is short-circuited, and if left as it is, the device and the battery are heated. In order to prevent this, if a Schottky barrier diode for blocking reverse current is inserted between the battery and the device, VF of about 0.3 V of the diode is lost, resulting in a large loss, and the inherent high efficiency performance of the device is lost. Therefore, the circuit shown in FIG. 3 was developed in which no current flows even when the power supply is reversely connected, which is necessary for the present invention, and it operates up to a low voltage. This circuit is a voltage booster circuit that directly connects two transistors of different polarities. However, in the present invention, a voltage of about 3 V boosted by itself is applied to the emitter as a power supply for the previous stage, so that the previous stage transistor has a high VBE value. The voltage necessary for the VBE of the next-stage transistor connected via the VCE drop is also maintained when the battery voltage is reduced. As a result, while the bipolar transistor is used, once the circuit starts up at about 0.7V, the white LED continues to be lit even if the battery voltage drops below 0.3V. The red LED 1 provided in the circuit is for informing the location of the device even in the dark by turning on the LED 1 when the battery voltage is 1.35V or more in the switch OFF state and flowing into the LED 1 slightly. Current consumption is negligible and has little effect on battery life. It is lit even when the switch is ON, and the brightness change shows the approximate battery voltage. The D2 4.7V Zener diode is for suppressing the voltage rise to 5V or less even if the output part after D1 rectification becomes unloaded. R2 and R3 are responsible for current limitation of LED1. By storing the battery no-load state voltage in C1 before S1, startup at power-on becomes easy. If the value of R4 is set so that the current consumption of LED2 is 20 mA when the battery is new, the LED is turned on for 50 hours continuously with an alkaline AA battery and for 300 hours continuously with an AA battery until the current of LED2 reaches 5 mA. be able to. The latest 5-mm LED emits light with a luminous intensity of 27 candela even at a rating of 20 mA, which is sufficient to illuminate a range of several meters. The conversion efficiency of this circuit is about 75%. The butyl rubber rubber band 9 excellent in durability and electrical insulation used in the present apparatus can be made into a suitable butyl rubber rubber band by cutting a tube used in a bicycle tire into a width of 2 to 3 mm. Butyl rubber also has ozone resistance and is used for window frame waterproofing, wire coating, tire tubes, and the like.

  The present invention simplifies the structure to the minimum necessary and can be sold at a low price as a resource-saving product of only 10 grams, so it is also suitable for use as one of emergency supplies, Even if a battery of a specific size is sold out, it can be lit with one battery of any stock size. It is also possible to use 3 AA size batteries or less in parallel.

1. Single type 1 battery 2. Single 2 type battery3. 3. AA battery 4. AAA type battery Single 5 type battery6. LR-44 button type battery7. Upper printed circuit board (booster circuit plus battery contact, both sides)
8). Lower printed circuit board (negative battery contact, single side)
9. Butyl rubber rubber band (Bicycle tube is used as a ring)
10. Hook part 11. Boost circuit cover 12. Negative pole joint wire 13. Eyelet TR1 for battery negative electrode TR1 PNP transistor TR2 NPN transistor L1 Inductor LED1 Red LED
LED2 White 5mm LED
D1 Schottky barrier diode D2 4.7V Zener diode C1, C2, C3 Chip type multilayer ceramic capacitors R1, R2, R3, R4 Chip type fixed resistor S1 SPDT Slide type switch

Claims (1)

  A double-sided printed circuit board with a voltage boosting electronic circuit component for lighting a white LED and a white LED mounted on the upper surface of the double-sided printed circuit board, and the back surface as a battery positive electrode contact, and a battery negative electrode substrate of the same size By attaching a rubber band to the hooks provided on the two sheets to form a battery holder, the LED can be lit with a single battery so that it can be adapted to multiple types of batteries of different sizes. Lighting fixture device.

Images