JP3239649U - small portable warning light - Google Patents

Abstract

The present invention provides a safe, lightweight, compact portable warning light capable of short-time charging and long-time operation.
A compact portable warning light uses a lithium ion capacitor as a storage battery, and includes a charging terminal, a charging circuit, a light emission control section, and a light emitting element. Power is supplied to a charging terminal 1 from a USB power source or a mobile battery, and the supplied power passes through a charging circuit 2 and charges a lithium ion capacitor 3 for a short period of time. When used as a small portable warning light, the switch 7 is opened and closed to turn on the light emission control section 4, and the light emission control circuit 8 causes the light emitting element 6 to emit light.
[Selection drawing] Fig. 1

Description

The present invention relates to a charging circuit that uses a lithium-ion capacitor as a storage battery and can charge the battery in a short period of time, and a small portable warning light that can emit light for a long period of time. In particular, it relates to a small portable warning light that can be easily installed by the user.

Warning lights using rechargeable secondary batteries (lithium ion batteries, nickel-metal hydride batteries) and warning lights using disposable primary batteries (dry batteries, button batteries) are widely used.

Although the warning light using the secondary battery has a long operation time and is convenient, it has a problem that it takes a long time to charge the battery before use. For example, there are products that require one to four hours, and even one night, to be fully charged.

When the secondary battery is exhausted during nighttime use, it does not function as a warning light until it is restarted after charging is completed. In this case, it will be recharged with a mobile battery etc. on the spot, but of course it will take a long time to recharge, and the time it will not function as a warning light will be longer, and the surroundings will recognize the existence of the warning light during that time. It is very dangerous to be put in a situation where you cannot do it.

The warning light using the primary battery also has a long operating time, but if it is exhausted during use, it cannot be reused. It is inconvenient because it is necessary to carry a spare primary battery in advance.

Among the secondary batteries, the lithium ion battery is a small, lightweight, and high-performance storage battery, but it is vulnerable to vibration, shock, and deformation. For example, if the lithium-ion battery is deformed due to vibration during long-term bicycle riding or an impact in the event of a fall accident, there is a high probability that the lithium-ion battery will ignite, explode, or emit smoke. As a device to be used, it will always be used in a dangerous state.

In general, warning lights are often used as rear warning lights, so they are often installed at the rear out of the user's field of vision. The conventional product indicates consumption by changing the blinking of the light emitting part, but it is difficult to confirm during actual use. In other words, when the storage battery of the warning light is exhausted and the warning light stops, there is a high possibility that the user will not be able to recognize that the warning light has been turned off and stopped. Furthermore, if this happens, the surroundings will not be able to recognize the presence of the user, which is extremely dangerous.

JP 2014-121139 A JP 2011-164258 A

The present invention uses a lithium-ion capacitor as a storage battery to realize a short-time charge of several minutes to ten minutes. Suggest a warning light.

However, for charging the lithium-ion capacitor, a dedicated charging integrated circuit optimized for the working voltage range and charging current has not spread. Therefore, the present invention proposes a charging circuit that is composed of general electronic components and that is capable of charging in a short period of time.

We propose a small portable warning light that can avoid danger to the human body during use and accidents by using a lithium-ion capacitor as a storage battery that does not ignite, explode, or emit smoke even when impacted or deformed.

Further, the present invention proposes a small portable warning light equipped with a buzzer so that the consumption of the lithium ion capacitor can be recognized by sound other than flashing light.

A compact portable warning light according to a first invention includes a charging terminal for connecting an external power source, a charging circuit for controlling power input to the charging terminal, a lithium ion capacitor charged by the charging circuit, and the lithium ion capacitor. It is characterized by comprising a light emission control section for controlling the output of the ion capacitor and a light emitting element connected to the light emission control section.

The charging circuit of the compact portable warning light according to the second invention includes a constant voltage integrated circuit A, and after the constant voltage integrated circuit A, a plurality of current limiting circuits composed of a combination of a charging current limiting resistor and a semiconductor switch are arranged in parallel. A small portable warning light according to the first idea, characterized in that it is connected to the

The light emission control section of the small portable warning light according to the third invention comprises a constant voltage integrated circuit B with an output on/off control terminal and a light emission control circuit. warning light.

A compact portable warning light according to a fourth aspect is the compact portable warning lamp according to the first aspect, characterized in that the light emission control section is provided with a photodetector that outputs a light/dark signal.

A compact portable warning light according to a fifth aspect is the compact portable warning light according to the first aspect, characterized by comprising a switch that shares the function of turning on/off the power and changing the light emitting operation.

A compact portable warning light according to a sixth aspect is the compact portable warning light according to the first aspect, characterized by comprising a buzzer for informing the user that the lithium ion capacitor is exhausted.

A compact portable warning light according to a seventh aspect is characterized by comprising a heat-shrinkable tube that protects the entire surface of the light-emitting element except for the connection portion of the charging terminal and the light-emitting portion described in the first aspect. A small portable warning light.

A small portable warning light according to an eighth device is the small portable warning light according to the first device, characterized in that the heat-shrinkable tube portion is provided with a hook-and-loop fastener.

The compact portable warning light of the present invention uses a lithium-ion capacitor for the storage battery, realizing short-time charging. can be done.

Furthermore, by using the lithium-ion capacitor, the size and weight can be reduced, and the user can be protected from dangers such as ignition, explosion, and smoke due to impact or deformation in the event of an accident.

In addition, when the lithium-ion capacitor is depleted, a warning sound is generated by a buzzer to notify the user of the depletion. As a result, the user can quickly recharge the battery and continue to use the battery, thereby putting the battery in a dangerous situation. I will not be defeated.

1 is an overall block diagram of a small portable warning light according to the present invention; FIG. Fig. 2 is a block diagram of the charging circuit 2 of the small portable warning light according to the second aspect of the present invention; 1 is an example of substrate mounting of main components of a compact portable warning light according to the present invention; 1 is an external view example of a compact portable warning light according to the present invention; It is an example of the usage pattern of the compact portable warning light according to the present invention.

Fig. 1 is a block diagram of a small portable warning light according to the present invention. Power supplied from a USB power supply or a mobile battery connected to a charging terminal 1 passes through the charging terminal 1 and is converted into voltage and current in a charging circuit 2. After being limited, the lithium ion capacitor 3 is charged. The charging circuit 2 operates with the power supplied to the charging terminal 1, and outputs an on/off signal for displaying charging and charging completion to the constant voltage integrated circuit B5 to cause the light emitting element 6 to emit light to inform the user of the charging state. Let me know. After charging is completed, disconnect the USB power source or the mobile battery from the charging terminal 1, open and close the switch 7 to turn on the light emission control unit 4 of the small portable warning light, and the light emission control circuit 8 detects the light detection element 9. The ambient light/darkness is determined by the light/darkness signal obtained from , and an on/off signal is output to the constant voltage integrated circuit B5 to cause the light emitting element 6 to emit light in a predetermined light emission pattern. When an open/close signal is input from the switch 7 while the light emission control section 4 is operating, the light emission control section 4 sends a new on/off signal from the light emission control circuit 8 to the constant voltage integrated circuit B5 in order to change the light emission pattern. Light emitting element 6 is caused to emit light. When the lithium ion capacitor 3 is exhausted while the compact portable warning light is in operation, a signal is output from the light emission control part 4 to the buzzer 10, and the buzzer 10 emits a warning sound. As for the switch 7, it is preferable to use a switch such as a tact switch which is turned on only when it is pressed.

FIG. 2 is a block diagram of a charging circuit 2 for a small portable warning light according to the present invention. The charging circuit 2 is configured by connecting in parallel a plurality of current control circuits 14 each having a charging current limiting resistor 12 and a semiconductor switch 13 connected in series after the constant voltage integrated circuit A11. The number of parallel connections of the current limiting circuit 14 may be any number. The greater the number of connections, the more detailed control can be performed. The charging circuit 2 monitors the terminal voltage of the lithium ion capacitor 3 and judges the state of charge of the lithium ion capacitor 3 from the terminal voltage. The charging current corresponding to the terminal voltage is realized by switching the semiconductor switch 13 or by changing the combination to change the combined resistance value of the current limiting circuit 14 . The output voltage of the constant voltage integrated circuit A11 is set in advance to the specified maximum charging voltage of the lithium ion capacitor 3, and when charging is nearing completion, the terminal voltage of the lithium ion capacitor 3 and the output voltage of the constant voltage integrated circuit A11 A state of equilibrium is reached. Charging is completed by detecting the voltage when the equilibrium state is reached.

FIG. 3 shows an example of substrate mounting of the main parts of the compact portable warning light according to the present invention. The light-emitting element 6 and the lithium ion capacitor 3 are mounted on the front surface of the substrate 15 and fixed to the substrate 15 with an epoxy resin 16 as a fixing agent. For fixing the light emitting element 6 and the lithium ion capacitor 3 to the substrate 15, materials other than the epoxy resin may be used as long as they can be firmly fixed. The switch 7 , the photodetector 9 , the buzzer 10 and the charging terminal 1 are mounted on the back surface of the substrate 15 . By fixing directly to the front and back of the substrate 15 without using a wiring cord or the like, a compact, lightweight portable warning light can be realized. The arrangement of the main components shown in FIG. 3 is an example of the arrangement and does not necessarily have to be arranged as shown. Also, a plurality of substrates 15 may be used instead of one.

FIG. 4 is an external view of the compact portable warning light 20 according to the present invention when it is completed. The compact portable warning light 20 completed in FIG. 3 is entirely protected by a heat-shrinkable tube 17 except for the light-emitting part of the light-emitting element 6 and the external connection part of the charging terminal 1 for protection of each element. A lightweight and compact portable warning light can be realized by As a means of protection, a protective case made of a material such as a resin case or a metal case may be used. The switch 7 is opened and closed by pushing it through the heat-shrinkable tube 7 . Furthermore, the light of the photodetecting element 9 is made possible by making a hole 18 for lighting in the heat-shrinkable tube 17 . A hook-and-loop fastener 19 can be attached around the heat-shrinkable tube 17 to install and fix the compact portable warning light 20 of the present invention. In FIG. 4, it is shown attached to the side surface, but the attachment position may be changed according to the convenience of the user and the place where the small portable warning light 20 is used. The fixing means is not limited to the hook-and-loop fastener 19, but may be a magnet, a clip, a dedicated stay, or the like.

FIG. 5 shows an example of usage in which the compact portable warning light 20 according to the present invention is attached to a helmet 21. As shown in FIG. The completed compact portable warning light 20 is characterized by being extremely light, weighing only a few grams, so there is no fear of falling off or dropping due to vibrations received during use. Furthermore, with this feature, even if it is attached to the head of a helmet or a hat, it can be used with almost no burden on the neck. Moreover, thanks to the lithium ion capacitor 3, it can be used more safely.

Although a preferred example of use of the present application has been described so far, the present invention is not limited to this example. It has features such as small size, light weight, safety, short charging time, and long operation time, so it can be used for various purposes such as bicycles, bicycle helmets, construction helmets, umbrellas, strollers, clothes for walking and running, and pets. can be considered. Omissions, additions, substitutions, and other modifications of the configuration are possible without departing from the spirit of the present invention while taking advantage of the features of the present invention. The present invention is not limited to the above description, but is defined by the claims of the utility model registration.

REFERENCE SIGNS LIST 1 charging terminal 2 charging circuit 3 lithium ion capacitor 4 light emission controller 5 constant voltage integrated circuit B
6 light emitting element 7 switch 8 light emission control circuit 9 photodetector 10 buzzer 11 constant voltage integrated circuit A
12 Charging current limiting resistor 13 Semiconductor switch 14 Current limiting circuit 17 Heat shrinkable tube 19 Velcro fastener 20 Small portable warning light

Claims (8)

a charging terminal for connecting an external power supply;
a charging circuit that controls power from the charging terminal;
a lithium ion capacitor of a storage battery charged by the charging circuit;
a light emission control unit that controls the output of the lithium ion capacitor;
A compact portable warning light comprising a light emitting element connected to the light emission control section. 2. The charging circuit according to claim 1, further comprising: a constant voltage integrated circuit A; and a charging circuit connected in parallel after the constant voltage integrated circuit A and a plurality of current limiting circuits each composed of a combination of a charging current limiting resistor and a semiconductor switch. Described small portable warning light. 2. The compact portable warning light according to claim 1, wherein said light emission control unit comprises a voltage control integrated circuit B with an output on/off control terminal and a light emission control circuit. 2. The compact portable warning light according to claim 1, further comprising a photodetector for outputting a light/dark signal to said light emission control section. 2. A small portable warning light according to claim 1, comprising a switch that shares the functions of changing the power on/off and lighting behavior. 2. A small portable warning light according to claim 1, further comprising a buzzer to notify the user of the exhaustion of said lithium ion capacitor. 2. The compact portable warning light according to claim 1, further comprising a heat-shrinkable tube that protects the entire surface of the light-emitting device except for the connecting portion of the charging terminal and the light-emitting portion. 2. The compact portable warning light of claim 1, wherein said heat shrink tubing portion comprises a hook and loop fastener.

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