JP4572798B2 - head lamp - Google Patents

Description

  The present invention relates to a battery-powered portable lamp, and more particularly to a switch structure provided with a dimming function.

  Since the battery life of a portable electric light powered by a battery is determined by the brightness setting of the light source, Patent Document 1 proposes a dimming function capable of adjusting the brightness according to the scene to be used. This proposal includes a dimming circuit for adjusting the brightness of the light source, and the brightness of the light source can be adjusted by pressing a dimming switch.

In addition, as a method for adjusting the brightness, there is known a method that doubles as a power switch using an IC and a dimming switch.
JP 2005-216621 A

  However, with the configuration of the above patent, it is possible to adjust the brightness according to the scene to be used, but easy switch operability required for portable electric lights and reliable malfunction that does not accidentally switch on during mobile movement It cannot be prevented. In particular, headlamps used in winter mountains, etc. may cause life-threatening accidents if they are taken out of the night bag and turned on when the power is turned on. Thus, there is a problem that it is impossible to provide a highly reliable headlamp without preventing a decrease in battery capacity due to the standby current and the self-discharge of the battery.

In order to solve the conventional problem, a power switch that opens and closes electric energy supplied from a power source, a wall disposed so as to surround the power switch with respect to an operation direction of the power switch, and the wall are covered. configured switch operating force is adjustable power supply Sutchikaba and the power supply switch for controlling the electric energy supplied from the power source through the lighting circuit before and dimming circuit for controlling the brightness of the lighting circuit Kichohikari as It is composed of a dimming switch that sends a signal of brightness strength / weakness to the circuit and a light source that emits light by electric energy from the lighting circuit, and prevents erroneous operation by a wall arranged so as to surround the power switch, The dimming switch having a lighter operating force than the power switch and the power switch are arranged so as to be spaced from each other.

  According to the present invention, with the above configuration, the power switch is surrounded by a wall and a cover for preventing malfunction, the operation force of the dimmer switch is reduced, and the operation direction or the interval between the power switch and the dimmer switch is reduced. By opening it, it is possible to realize a dimming function that does not cause the switch to malfunction and adjusts the brightness when carrying the portable light in a bag, etc. By using a lithium battery with good storage characteristics as the power source, a highly safe headlamp that can be used in winter mountains can be provided.

  An embodiment of the present invention will be described below with reference to FIGS. 1, 2, 3, 4, 5, 6, and 7. FIG.

  FIG. 1 is an external view as viewed from the front of the present invention, FIG. 2 is an external view as viewed from the rear, and FIG. 3 is a block diagram of the present invention. The power switch 1 opens and closes the electrical energy supplied from the power source, and supplies the electrical energy to the lighting circuit 2 and the dimming circuit 3. The lighting circuit 2 supplies a voltage and current necessary for lighting to the light source 5. The dimmer circuit 3 detects the switched state of the dimmer switch 4 and sends a signal for adjusting the intensity / weakness of light to the lighting circuit 2.

  FIG. 2 shows two switch operating directions when the power switch 1 is turned on once and turned off (push-on, push-off) when pressed once, and the dimmer switch 4 is constituted by a tact switch. It is a figure. Assuming a surface perpendicular to the operation direction of the power switch 1 and changing the operation direction of the light control switch 4 to be parallel to the assumed surface, the operation direction of the power switch and the light control switch is changed. This makes it difficult to operate the switch incorrectly. Even when the operation direction of the switch is the same, the same effect as when the operation direction is changed can be obtained by keeping the distance between the two switches by 20 mm or more.

  FIG. 4 is a cross-sectional view of the configuration of the switch including the power switch 1 as seen from the front of the headlamp, and FIG. The power switch 1 is a push switch that is push-on and push-off, and a wall 6 arranged so as to surround the power switch 1 with respect to the operation direction of the power switch 1 and a power switch cover configured to cover the wall 6 7. Although the diameter of the wall 6 surrounding the power switch is set to φ15 to φ20 mm, the switch operation can be performed at the belly of the finger, but no malfunction occurs even if a switch having a diameter of φ20 mm or more hits the switch portion. Further, the power switch cover 7 is made of a soft material such as elastomer, silicon, NBR, or CREDPM, and the operating force of the switch can be adjusted by changing the hardness and thickness of the material. By adjusting the operating force of the power switch to about 900 gf to 1300 gf, it is possible to prevent the switch from malfunctioning even when the power switch is less than 20 mm. FIG. 7 is a cross-sectional view of the switch configuration including the dimming switch 4 as viewed from the side of the headlamp. The dimmer switch cover 9 that covers the dimmer switch 4 is made of a soft material such as elastomer, silicon, NBR, or CREDPM, and the operating force of the switch can be adjusted by changing the hardness and thickness of the material. By separating the power switch 1 and the dimmer switch 4, it is not necessary to consider malfunctions when the dimmer switch is carried, and the operation force of the dimmer switch can be reduced to about 200 gf to 600 gf. Can do well.

  FIG. 6 shows an embodiment of the circuit diagram of the present invention, which has a configuration in which a booster circuit 8 is added to the lighting circuit 2. Each time the dimmer switch 4 is pressed with a tact switch, a signal is transmitted to the flip-flop circuit, and the brightness of the light, medium, and strong light is controlled by turning on and off the two transistors. In the above configuration, the same effect can be obtained when the power switch 1 is a slide switch, a seesaw switch or a rotary switch.

  FIG. 7 is a cross-sectional view of the switch configuration including the dimming switch 4 as viewed from the side of the headlamp. By constructing the dimming switch 4 and the lighting circuit 2 on one printed circuit board 10, the assembling process can be simplified and the cost can be reduced.

  FIG. 8 is a cross-sectional view of the power supply terminal on the printed circuit board as seen from the rear surface of the headlamp. By attaching the power supply terminal 11 to the printed circuit board 10 and making contact with the power supply terminal 12 on the power supply side, the configuration can be simplified, and assembly in manufacturing can be simplified.

  As described above, according to the headlamp of the embodiment of the present invention, it is possible to prevent the malfunction of the power switch 1 when it is carried in a bag or the like, and the switch operability of the dimming switch 4 can be improved.

  The present invention relates to a battery-powered portable lamp, and more particularly to a switch structure provided with a dimming function. The headlamp according to the present invention is useful for improving the operability of the dimming switch that adjusts the brightness to a plurality of brightness levels because the headlamp is not easily turned on when moving in a bag or the like.

External appearance from the front of the present invention External view from the back of the present invention Block diagram of the present invention Cross section of the switch section viewed from the front Enlarged view of part 4A Circuit diagram of the present invention Cross section of dimmer switch viewed from the side Cross-sectional view of the power supply terminal on the printed circuit board viewed from behind

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Power switch 2 Lighting circuit 3 Light control circuit 4 Light control switch 5 Light source 6 Wall surrounding power switch 7 Power switch cover 8 Booster circuit 9 Light control switch cover 10 Printed circuit board 11 Power supply terminal on printed circuit board 12 Power supply terminal on power supply side 13 Switching means

Claims (6)

A power switch that opens and closes the electrical energy supplied from the power source, a wall that is disposed so as to surround the power switch with respect to the operation direction of the power switch, and a cover that covers the wall are configured to adjust the switch operating force. and a power supply S w Tchikaba a dimmer circuit for controlling the brightness of the lighting circuit and the lighting circuit for controlling the electric energy supplied from the power source through the power switch capable, strong-weak brightness to the dimming circuit It is composed of a signal transmission that dimmer switch a light source that emits light by electrical energy from the lighting circuit, while preventing an erroneous operation by located wall so as to surround the power switch, lightly operating force than the power switch A headlamp characterized in that the arrangement of the dimmer switch and the power switch is spaced .   2. The headlamp according to claim 1, wherein the power switch is a push switch, a slide switch, a seesaw switch, or a rotation switch that is turned on and off, and the dimming switch is a tact switch.   The headlamp according to claim 1, wherein the power switch and the dimming switch are operated in different directions.   2. The headlamp according to claim 1, wherein the power switch and the dimming switch are configured with an interval of 20 mm or more.   2. The headlamp according to claim 1, wherein a lithium battery is used as a power source.   The headlamp according to claim 1, wherein the lighting circuit has a function of boosting a voltage from a power source.

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