JP3036492U - Portable light - Google Patents

Abstract

(57) Abstract: It is possible to project light of a selected color in a desired direction without reducing the intensity of the light, and moreover, to easily and quickly switch the emission color. Provide a portable electric lamp that can. A portable electric lamp (1) including a tubular main body (2), a reflection cone (3) having a substantially conical side surface shape accommodated in an end of the main body, and a light source bulb (4) provided inside the top of the reflection cone, An annular space 8 formed between the inner surface of the main body and the outer surface of the reflection cone near the top of the reflection cone.
While forming a slit 7 communicating with the above, while providing one or more filters 9a, 9b which can be housed in the annular space or the internal space of the main body continuous to the annular space, the filter is inserted from the slit to the inside of the reflection cone. A filter drive mechanism 12 is provided for extending the filter.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable electric lamp, and more particularly, to a portable electric lamp that can generate light of different colors with one light source.

[0002]

[Prior art]

 For example, a guardman or a police officer uses a portable light such as a flashlight to guide traffic control at night at a road construction site or a traffic accident site.

A general flashlight includes a reflection cone having a substantially conical side surface whose inner surface is mirror-finished, and a light source bulb is arranged on the top of the reflection cone. Therefore, the light emitted from the light source bulb can be efficiently collected by the reflection cone and directed in the light projecting direction. Therefore, the intensity of light becomes large and the recognition distance of light is long.

[0004] In order to use a flashlight to signal a moving vehicle to travel, stop, etc., it is necessary to perform a hand gesture while holding the flashlight or the like. However, it is very difficult for the person to be signaled and guided by the hand gesture with a flashlight to signal such as progress or stop, and to judge this.

In order to solve the above-mentioned problems, for example, as disclosed in Japanese Utility Model Laid-Open No. 3-257702, a plurality of colors in which the outer peripheral portion of a rod-shaped light emitting portion is colored with translucency is used. A portable electric lamp has been proposed in which a bellows-like filter is provided and the color of light emitted can be changed by selecting this filter.

[0006]

[Problems to be solved by the device]

 However, in the conventional portable electric lamp described above, since the entire cylindrical outer peripheral surface is a light emitting surface, light is emitted in all directions. Therefore, it is not possible to project the selected color in the selected direction. Therefore, the light is also projected in the direction opposite to the direction in which the signal is sent, and eventually the signal must be sent by hand. In addition, changes in the luminescent color are also transmitted in all directions, which may cause confusion in the person receiving the signal.

Further, since the entire cylindrical outer peripheral surface is configured to emit light, the light emitting area is large, but the intensity of light per unit area of the light emitting surface is correspondingly small, and the light emission is confirmed. The distance that can be made becomes shorter.

Further, since it takes time to change the emission color, it is difficult to send a signal only by changing the emission color.

The present invention solves the above-mentioned problems of the related art and allows light of a selected color to be projected in a desired direction without weakening the intensity of light, and moreover, the emission color can be easily switched, It is an object of the present invention to provide a portable electric lamp that can be quickly operated.

[0010]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention takes the following technical measures.

The invention according to claim 1 of the present application provides a cylindrical main body, a reflection cone having a substantially conical side surface accommodated in an end portion of the main body, and a light source bulb provided inside a top portion of the reflection cone. In a portable electric lamp provided with, a slit that communicates with an annular space formed between the inner surface of the main body and the outer surface of the reflective cone is formed near the top of the reflection cone, while the slit is continuous with the annular space or the annular space. In addition to providing one or more filters that can be housed in the internal space of the main body, a filter drive mechanism that extends the filters from the slits to the inside of the reflection cone is provided.

The invention of the present application is to change the color or the like of the projected light by extending a filter having a color having a light-transmitting property to the inside of the reflection cone.

The filter is not limited to a color filter, and may be a filter that weakens the intensity of light. When used as a floodlight for sending a signal, the higher the light intensity is, the better, but when reading a map, weak light is suitable. Further, it is also possible to adopt a filter that passes only light of a predetermined wavelength or a filter that blocks light projection so that the above-mentioned drive mechanism can generate a blinking signal.

In addition, in cooperation with a lens provided in the opening of the reflection cone, the light emitted from the light source bulb is projected in parallel or is condensed at a site separated by a predetermined distance. You can also do it.

The filter is housed in an annular space formed between the inner surface of the main body and the outer surface of the reflection cone, or an internal space of the main body continuous with the annular space.

Since the reflection cone is formed into a substantially conical side surface, an annular space is formed between the outer surface of the reflection cone and the inner surface of the main body when the reflection cone is housed in the cylindrical body. To be done. The present invention utilizes this annular space to accommodate the filter. Therefore, it is possible to project light of a plurality of colors without changing the form and size of a general flashlight.

Further, since the filter can be configured to emit light only by the light emission of the light source bulb in the state where the filter is housed in the annular space, it can be used as a normal flashlight.

Further, the filter can be extended to the front of the light source bulb through the slit provided in the reflection cone, and the unused filter can be stored outside the reflection cone. Not emit light of different colors etc. from the filter. Therefore, it is possible to reliably switch the filters.

The slit is formed near the top of the reflection cone. This is because the annular space formed on the outer peripheral portion of the reflection cone becomes smaller as it gets farther from the top, and the accommodation space for the filter becomes smaller. On the other hand, by extending the filter as close as possible to the light source bulb, the area for covering the front space of the light source bulb is reduced, and the filter can be miniaturized. In addition, the efficiency of the filter is increased and the light projection performance can be improved. It is desirable to construct the filter so that the filter is located within 1 cm from the light emitting surface of the light source bulb.

The slit may be any slit that allows the filter to pass through and extend inside the reflection cone, and can be formed in accordance with the movement trajectory of the filter driven by the filter drive mechanism described below. Good. Further, the slit may be formed by cutting out a part of the substantially conical side surface, or the slit may divide the reflection cone.

As the filter driving mechanism, various mechanisms can be adopted as long as they extend the filter inside the reflection cone through the slit. For example, a mechanism for linearly guiding the filter to extend it from the annular space to the inside of the reflection cone, and as in the invention described in claim 2 of the present application, the filter is rotated around a predetermined axis to reflect the light. A mechanism for extending the inside of the cone can be adopted.

It is desirable that the filter driving mechanism be configured so that it can be operated from outside the main body. It can be configured so that it can be manually operated, or can be configured to be driven by using a motor, a solenoid, or the like.

The annular space that houses the filter is formed so as to surround the outer circumference of the reflection cone. Therefore, a plurality of filters can be accommodated along the annular space, and a plurality of slits can be formed so that each of the filters can be selectively extended inside the reflection cone.

According to a second aspect of the invention, a filter row is formed by arranging a plurality of filters around a predetermined rotation axis, and a slit for extending each filter of the filter row to the inside of the reflection cone is formed. A filter driving mechanism is provided which, while being formed, rotates the filter row by an operation from outside the main body to extend the selected filter to the inside of the reflection cone.

In the invention described in this claim, a plurality of filters are arranged around a predetermined rotation axis, and slits corresponding to the rotation loci of these filters are provided in the reflection cone to rotate the filter row. This allows the selected filter to extend inside the reflection cone.

The number of filters constituting the filter array is not particularly limited, and slits facing each other with the axis of the reflection cone sandwiched are provided, and one filter may be arranged outside each of the pair of slits. Good. It is also possible to arrange three or more filters along a rotating surface such as a cylindrical side surface or a spherical surface. The rotation angle of the filter array is not particularly limited, and can be set according to the number of filters arranged, the expansion angle of the reflection cone, and the like.

The filter driving mechanism may be configured to rotate the filter row and extend the selected filter to the inside of the reflection cone by an operation from the outside of the main body.

For example, the rotation axis of the filter row is extended to the outside of the main body, and the rotation axis is rotated by using a lever or the like so that the filter row is rotated. be able to. It is also possible to use a rotary solenoid or the like to rotate the filter array by a switch operation and extend the selected filter inside the reflection cone.

By adopting the above configuration, it is possible to switch the filter extending from the outside of the main body to the inside of the reflection cone. Therefore, the operation is simplified and the filter can be replaced quickly and reliably. As a result, it becomes possible to immediately switch the light emission of different colors, and it is possible to guide the vehicle etc. by sending a signal according to the change of the light emission color.

The invention according to claim 3 of the present application employs, as the plurality of filters, translucent colored filters that are respectively colored differently.

For example, by adopting red and blue filters, it becomes possible to construct a portable electric lamp that exhibits the same function as a traffic signal. Moreover, since the direction of light emission can be regulated, it is possible to send a signal to the vehicle or the like only by changing the color. Therefore, it is possible to send a reliable signal to a vehicle or the like and guide the vehicle with high safety.

[0032]

[Effect of the invention]

 According to the present invention, it is possible to provide a portable light in the form of a general flashlight and capable of projecting a plurality of colors without increasing the size.

Further, since it is possible to easily change the projected color in a state in which the projected direction is regulated, it is possible to send a reliable signal.

Further, since the filter can be replaced immediately, it is possible to switch the projection of different colors immediately. Therefore, it is possible to guide the vehicle or the like by the change itself of the projected color, and it is possible to perform safe and reliable guidance.

Moreover, since the filter can be housed in the space formed between the reflection cone and the main body, it can be used as a normal flashlight without the filter, and can be used for various purposes.

[Embodiment of the invention]

 Hereinafter, embodiments according to the present invention will be specifically described with reference to the drawings.

FIG. 1 shows a first embodiment of a portable electric lamp according to the present invention. A portable electric lamp 1 according to this embodiment includes a cylindrical main body 2, a conical side face-shaped reflection cone 3 housed at an end of the main body 2, and a light source bulb 4 provided on the top of the reflection cone 3. Equipped with. A battery 5 for supplying electric power to the light source bulb 4 is housed on the opposite side of the body 2 from the reflection cone 3.

The main body 2 is formed in a hollow stepped cylindrical shape, and at the end thereof, a cylindrical end cover 6 having a stepped outer diameter is detachably provided. . The end cover 6 holds the reflection cone 3 and allows the light source bulb 4 to be replaced.

A slit 7 is formed near the top of the reflection cone 3. The slit 7 is formed so as to divide the reflection cone 7 in the vicinity of the joint of the end cover 6.

On the other hand, in the annular space 8 formed between the outer peripheral portion of the reflection cone 3 and the main body 2, spherical light-transmitting filters 9a and 9b with different colors are housed. In this embodiment, red and blue plastic translucent filters are used.

These filters 9 a and 9 b are formed along a virtual rotation curved surface 11 around an axis 10 orthogonal to the axis of the main body 2 and are arranged in the rotation direction, respectively, and can be operated from the outside. A mechanism 12 rotatably supports the shaft 10.

As shown in FIG. 3, the drive mechanism 12 rotatably supports the shaft 10 on a base 12 a fixed to the inner surface of the main body, and supports the filters 9 a and 9 b via a support rod 13 on the shaft 10. The filter 9a, 9b is configured to rotate by being connected to and supported by 10 and operating a lever 15 provided outside the main body 2 via a gear mechanism.

The gear mechanism is composed of a small gear 14 a provided on the shaft 10 and a large gear 14 b provided on the shaft 16 of the lever 15, and the turning operation angle of the lever 15 is small. Is set. As shown in FIG. 2, when the lever 15 is swung in the direction of the arrow, the filters 9a and 9b are integrally rotated around the shaft 10 via the drive mechanism 12.

The slit 7 is cut out along a spherical surface so that it can pass through the filters 9 a and 9 b and extend to the inside of the reflection cone 3. Therefore, as shown in FIG. 2, when the lever 15 is rotated to one side, the one filter 9a is extended to the inside of the reflection cone 3. On the other hand, when the lever 15 is rotated to the other side, the other filter 9b is extended to the inside of the reflection cone 3.

With the above drive mechanism, the selected filter can be extended to the inside of the reflection cone, and the projected color can be easily and quickly changed.

Further, as shown in FIG. 1, since both filters 9 a and 9 b are arranged with a gap corresponding to the inner part of the reflection cone 3 being provided, the filters 9 a and 9 b are accommodated in the annular space 8. In this state, light can be emitted from the light source bulb like a general flashlight. Therefore, it is possible to project three colors in addition to the colors of the light source bulb.

Moreover, since the filters 9a and 9b are housed in the annular space 8, the filters 9a and 9b have the same form as a normal flashlight and do not become large in size.

FIGS. 4 and 5 show a second embodiment of the present invention.

In this embodiment, the filter 17 having the colored portions 9c and 9d is arranged on the virtual rotation surface 11 around the rotation axis 10. Therefore, when the filter 17 is rotated, the portions 9c and 9d can be continuously extended into the reflection filter 3. Therefore, it is possible to continuously switch the projected colors.

That is, when red and blue are used as the portions 9c and 9d, it becomes possible to immediately switch the projection of these colors. Therefore, by changing the color, it is possible to send a signal to stop or progress, and it is possible to perform safe and reliable guidance.

Further, a red light projecting filter is adopted in the portion 9c, and a filter capable of blocking light projection is adopted in the portion 9d, and the filter 17 is reciprocally rotated within a predetermined rotation range. You can also send a red flashing signal.

The present invention is not limited to the above embodiment. In the embodiment, the translucent filter colored is used, but a filter that reduces the amount of light, a filter that passes light of a predetermined wavelength, or a filter that blocks the passage of light may be used.

Further, as shown in FIGS. 4 and 5, the drive mechanism can also be provided with the lever 15 by extending the shaft 10 directly from the main body without interposing a gear mechanism.

It is also possible to employ a drive mechanism that electrically rotates the filter using a solenoid or the like.

Further, it is also possible to arrange the above filters in a direction orthogonal to the axis of the main body to form a drive mechanism that linearly guides and drives.

Further, the means for supplying power to the light source bulb is not limited to the battery, but may be configured so that it can be supplied from a commercial power source.

[Brief description of the drawings]

FIG. 1 is a view of a cross section taken along an axis of a portable electric lamp according to a first embodiment of the present invention as viewed from above.

FIG. 2 is a diagram showing a state where a drive mechanism of the portable electric lamp according to FIG. 1 is operated.

FIG. 3 is a side view of a cross section taken along the axis of the portable electric lamp shown in FIG.

FIG. 4 is a view of a cross section taken along the axis of the portable electric lamp according to the second embodiment as seen from above.

FIG. 5 is a side view of a cross section taken along the axis of the portable electric lamp shown in FIG.

[Explanation of symbols]

 1 Portable Light 2 Main Body 3 Reflection Cone 4 Light Source Bulb 7 Slit 8 Annular Space 9a Filter 9b Filter 10 Axis 12 Drive Mechanism 17 Filter

Claims (3)

[Utility model registration claims] 1. A portable electric lamp comprising a cylindrical main body, a reflection cone having a substantially conical side surface housed in an end portion of the main body, and a light source bulb provided inside a top portion of the reflection cone. A slit communicating with an annular space formed between the inner surface of the main body and the outer surface of the reflection cone is formed in the vicinity of the apex of the above, while one or two that can be accommodated in the annular space or an internal space of the main body continuous to the annular space. A portable electric lamp comprising the above filter and a filter drive mechanism for extending the filter from the slit to the inside of the reflection cone. 2. A filter row is formed by arranging a plurality of filters around a predetermined rotation axis, and a slit is formed to extend each filter of the filter row to the inside of the reflection cone. The portable electric lamp according to claim 1, further comprising: a filter drive mechanism that rotates the filter row by operating from to extend the selected filter to the inside of the reflection cone. 3. The portable electric lamp according to claim 1, wherein the plurality of filters are translucent colored filters having different colors.