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WO2006080738A1 - A focus-adjustable flashlight - Google Patents

A focus-adjustable flashlight Download PDF

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Publication number
WO2006080738A1
WO2006080738A1 PCT/KR2005/003360 KR2005003360W WO2006080738A1 WO 2006080738 A1 WO2006080738 A1 WO 2006080738A1 KR 2005003360 W KR2005003360 W KR 2005003360W WO 2006080738 A1 WO2006080738 A1 WO 2006080738A1
Authority
WO
WIPO (PCT)
Prior art keywords
bulb
holder
reflection mirror
cover
flashlight
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2005/003360
Other languages
French (fr)
Inventor
Chan-Bok Seok
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2006080738A1 publication Critical patent/WO2006080738A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L4/00—Electric lighting devices with self-contained electric batteries or cells
    • F21L4/08—Electric lighting devices with self-contained electric batteries or cells characterised by means for in situ recharging of the batteries or cells
    • F21L4/085—Pocket lamps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
    • F21L4/00—Electric lighting devices with self-contained electric batteries or cells
    • F21L4/02—Electric lighting devices with self-contained electric batteries or cells characterised by the provision of two or more light sources
    • F21L4/022—Pocket lamps
    • F21L4/027—Pocket lamps the light sources being a LED
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/235—Details of bases or caps, i.e. the parts that connect the light source to a fitting; Arrangement of components within bases or caps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/04—Controlling the distribution of the light emitted by adjustment of elements by movement of reflectors
    • F21V14/045—Controlling the distribution of the light emitted by adjustment of elements by movement of reflectors in portable lighting devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F21V19/003—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
    • F21V19/004—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources by deformation of parts or snap action mountings, e.g. using clips
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/40—Hand grips
    • F21V21/406—Hand grips for portable lighting devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2113/00—Combination of light sources
    • F21Y2113/20—Combination of light sources of different form
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to a focus-adjustable flashlight, in particular to a focus-adjustable flashlight, in which a number of light emitting diodes (LED) are provided at the periphery of a bulb, the LEDs and the bulb are supported by a holder cover, and a through-hole is formed at the center of a reflection mirror through which the holder cover passes, so that the reflection mirror engaged with the holder cover is moved forward and rearward to thereby adjust the focus of the bulb and the LEDs by turning the cover engaged at a front end of a body of the flashlight.
  • LED light emitting diodes
  • a hand-lamp is so called a flashlight, and a flashlight means a small size portable lamp which is powered by a dry battery or a chargeable battery.
  • a flashlight means a small size portable lamp which is powered by a dry battery or a chargeable battery.
  • an incandescent bulb is used as a light source for the hand-lamp by nature, however, a hand-lamp is widely used, which is provided with a number of LEDs arranged at the periphery of the incandescent bulb so that the bulb and the LED can be selectively employed as is necessary.
  • a reflection mirror is employed, in which a through-hole is formed with projecting bulb at the center and a plurality of through-holes are formed at the periphery thereof through which LEDs are projecting.
  • the present invention has been made to solve the above-mentioned problem occurring in the conventional prior art, and the object of the present invention is to provide a focus-adjustable flashlight with employing the LEDs and the bulb for the light source, in which the LEDs and the bulb are supported by the holder cover, and the through-hole is formed at the center through which the holder cover passes, so that the focus of the bulb and the LEDs can be adjusted by turning the cover engaged with the front end of the hand-lamp body to move the reflection mirror forward and rearward.
  • a focus- adjustable flashlight comprising a body having a switch, a bulb holder arranged oriented toward the front of the body of the flashlight for receiving and supporting a bulb and a plurality of light emitting diodes, a substrate on which an electric circuit is arranged for lighting the bulb and the light emitting diodes selectively or concurrently by operating the switch, a reflection mirror for forwardly inducing the light of the bulb and the light emitting diodes, and a main cover to which the reflection mirror are secured and which is thread-engaged with the front of the body, wherein a holder cover is installed above the bulb holder so that the bulb and the light emitting diodes are respectively engaged in such a fashion as to project upwardly, and wherein the reflection mirror is formed at the lower center thereof with a through-hole into which an outer peripheral edge of the upper end of the holder cover is rotatably inserted.
  • an elastic fixed bar is installed at both sides of a body of the holder cover, in which a press portion is formed at the upper portion of the elastic fixed bar, an engaging jaw is formed at the inside lower portion, and a slit is formed at the inside of the fixed bar for increasing the elasticity, so that the engaging jaw can be elastically engaged with a flange portion of the bulb holder.
  • a flange is formed at a lower surface of the holder cover in such a fashion as to extend outwardly
  • a supporting tube is formed at a lower portion of the reflection mirror in such a fashion as to project downwardly
  • a press spring is installed between the flange of the holder cover and the lower supporting tube of the reflection mirror, so that the holder cover can be supported by the press spring.
  • the holder cover is made of transparent synthetic resins or plated synthetic resins.
  • an incandescent bulb can be employed as a light source for lighting in a long range and the super power saving LED can be employed as a light source for lighting in a close range, to thereby extend durability of the battery, as the bulb and the LED can be used selectively or concurrently.
  • the focus of the bulb can be easily adjusted by moving the position of the reflecting mirror forward and rearward using the main cover installed at the front of the body, in case of lighting in the long range.
  • FIG. 1 is a cross-sectional view showing exploded state of the reflection mirror, the holder cover, a bulb holder and the cover constituting the present flashlight according to one embodiment of the present invention
  • FIG. 2 is a cross-sectional view showing a principal portion of the flashlight in which the cover is moved in the forward side according to one embodiment of the present invention
  • FIG. 3 is a cross-sectional view showing a principal portion of the flashlight in which the cover is moved in the rearward side according to one embodiment of the present invention
  • FIG. 4 is a planar view showing the flashlight of the present invention in which the reflection mirror and the holder cover are engaged with each other;
  • FIG. 5 is a cross-sectional view showing a principal portion of the flashlight in which the reflection mirror and the holder cover are engaged with each other according to another embodiment of the present invention
  • FIG. 6 is a planar view showing the reflection mirror and the holder cover shown in the embodiment of FIG. 5 being engaged with each other.
  • FIG. 1 is a cross-sectional view showing exploded state of the reflection mirror, the holder cover, a bulb holder and the cover constituting the present flashlight according to one embodiment of the present invention
  • FIG. 2 is a cross-sectional view showing a principal portion of the flashlight in which the cover is moved in the forward side according to one embodiment of the present invention
  • FIG. 3 is a cross-sectional view showing a principal portion of the flashlight in which the cover is moved in the rearward side according to one embodiment of the present invention
  • FIG. 4 is a planar view showing the flashlight of the present invention in which the reflection mirror and the holder cover are engaged with each other.
  • the flashlight of the present invention includes a body 50, a substrate 40, a bulb holder 30, a holder cover 20, a reflection mirror 10, and a main cover 60.
  • the body 50 of the flashlight contains an electrical source (not shown), and a switch 51 is provided at one side of the body.
  • the substrate 40 which is installed inside of the body 50, is formed with a circuit for selectively or concurrently operating a bulb 31 and light emitting diodes 32 by the switch 51.
  • the bulb holder 30, which is installed on the substrate 40 is provided with flange portions 33 projecting in both lateral directions, and receives and supports a bulb 31 and a plurality of LEDs 32.
  • the holder cover 20 installed above the bulb holder 30 supports the bulb 31 and the LEDs 32 to project respectively in the forward direction of the body 50.
  • the reflection mirror 10 installed ahead of the holder cover 20 is provided with a through-hole 11 for the reflection mirror at the lower center portion so that the upper end of the holder cover 20 is projected therethrough to thereby radiate lights from the bulb 31 and the LEDs 32.
  • the main cover 60 is thread-engaged with a front end of the body 50, and supports the reflection mirror 10 secured inside thereof, and closes inside of the body 50 by means of a transparent plate 63.
  • the holder cover 20 can be made of any one material selected from transparent compound resins, plated synthetic resins, opaque synthetic resins.
  • the holder cover 20 is formed with a bulb through-hole into which the bulb 31 is inserted, a plurality of Led through-holes at the periphery of the bulb through-hole into which the LEDs 32 are inserted.
  • the holder cover 20 is formed with an elastic bar 23 at both sides for securing it to the flange portion 33 of the bulb holder 30.
  • the elastic bar 23 is configured to project in the lower and upper sides, in which a press portion 25 is formed at the upper portion, an engaging jaw 24 is formed inside of the lower portion and a slit 26 is formed inside of it to enhance elasticity of the elastic fixed bar 23.
  • the holder cover 20 is installed to facilitate exchange of the bulb 31 and the LEDs 32.
  • the bulb holder 30 is secured to the substrate 40, the bulb 31 and the plurality of LEDs 32 are respectively located at the bulb holder 30 and connected to the circuit, and then the holder cover 20 is placed above the upper end of the bulb holder 30.
  • the lower end engaging jaw 24 is opened a little with elastic force by pressing the press portion 25 above the elastic fixed bar 23 formed at both sides of the holder cover 20, and is inserted into the flange portion 33 of the bulb holder 30.
  • the slit 26, which is a through-hole formed at inside of the elastic fixed bar 23, helps the elastic fixed bar 23 be divulged more smoothly, so that the bulb 31 is projected through the bulb through-hole 21 formed at the center of the holder cover 20 and respective LED 32 is projected through the peripheral LED through-hole 22.
  • a rear cover 62 is engaged with the front end of the body 50, the reflection mirror 10 and the transparent plate 63 are installed at the front of the rear cover 62, and then a front cover 61 is engaged with the rear cover to accomplish the flashlight 1 of the present invention.
  • the reflection mirror 10, the front cover 61, the rear cover 62, and the transparent plate 63 are attached to one another so that they cannot be separated.
  • the reflection mirror 10 is also turned with the main cover 60 to move forward. Also, as shown in FIG. 3, when the main cover 60 is turned to move rearward from the body 50, the reflection mirror 10 is also turned together with the cover 60 to move rearward.
  • the focus of the reflection mirror 10 can be adjusted to be nearer or farther because the bulb 31 and the LEDs 32 are secured to the bulb holder 30 and the holder cover 20.
  • the through-hole 11 for the reflection mirror is formed at the center lower end of the reflection mirror 10, the function of the reflection mirror 10 cannot be weakened or the focus of the reflection mirror 10 cannot be made indistinct because of the through-hole 11.
  • the flashlight 1 of the present invention electrical power consumption can be substantially economized by using the plurality of LEDs 32 formed at the periphery of the bulb 31, after moving the switch 31 to turn off the power, when the flashlight 1 of the present invention is used for lighting a long range by adjusting the focus of the bulb 31 for the long range and then it is used for lighting a close range.
  • FIG. 5 is a cross-sectional view showing a principal portion of the flashlight in which the reflection mirror and the holder cover are engaged with each other according to another embodiment of the present invention
  • FIG. 6 is a planar view showing the reflection mirror and the holder cover shown in the embodiment of FIG. 5 being engaged with each other.
  • the holder cover 20a is formed with a bulb through-hole 21a and LED through-holes 22a, and a flange 23a is formed at the lower end of the holder cover so that it can be seated safely on the upper end of the flange portion 33 of the bulb holder 30.
  • a press spring 34 is installed between the flange 23a of the holder cover 20a and the lower portion of a reflection mirror 10a for elastically supporting the holder cover 20a in the downward direction.
  • a support tube 12a is formed to project downward at the lower portion of the reflection mirror 10a for supporting and securing one end of the press spring 34.
  • the holder cover 20a can be secured to the bulb holder 30 of the bulb 31 and the LEDs 32 without any movement because the other end of the press spring 34, which is secured to the support tube 12a of the reflection mirror 10a, presses the flange 23a of the holder cover 20a against the flange portion 33 by means of the elastic force, although the main cover 60 is turned to move the reflection mirror 10a forward or rearward at the front of the body 50.
  • an incandescent bulb can be employed as a light source for lighting in a long range and the super power saving LED can be employed as a light source for lighting in a close range, to thereby extend durability of the battery, as the bulb and the LED can be used selectively or concurrently.
  • the focus of the bulb can be easily adjusted by moving the position of the reflecting mirror forward and rearward using the main cover installed at the front of the body, in case of lighting in the long range.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

The present invention relates to a focus-adjustable flashlight, in particular to a focus-adjustable flashlight, in which a number of light emitting diodes (LED) are provided at the periphery of a bulb, the LEDs and the bulb are supported by a holder cover, and a through-hole is formed at the center of a reflection mirror through which the holder cover passes, so that the reflection mirror engaged with the holder cover is moved forward and rearward to thereby adjust the focus of the bulb and the LEDs by tuning the cover engaged at a front end of a body of the flashlight.

Description

Description
A FOCUS-ADJUSTABLE FLASHLIGHT
Technical Field
[1] The present invention relates to a focus-adjustable flashlight, in particular to a focus-adjustable flashlight, in which a number of light emitting diodes (LED) are provided at the periphery of a bulb, the LEDs and the bulb are supported by a holder cover, and a through-hole is formed at the center of a reflection mirror through which the holder cover passes, so that the reflection mirror engaged with the holder cover is moved forward and rearward to thereby adjust the focus of the bulb and the LEDs by turning the cover engaged at a front end of a body of the flashlight.
[2]
Background Art
[3] In general, a hand-lamp is so called a flashlight, and a flashlight means a small size portable lamp which is powered by a dry battery or a chargeable battery. Although an incandescent bulb is used as a light source for the hand-lamp by nature, however, a hand-lamp is widely used, which is provided with a number of LEDs arranged at the periphery of the incandescent bulb so that the bulb and the LED can be selectively employed as is necessary. Thus, as disclosed in Korea Utility Model Application No. 2004-5510, when the incandescent bulb and the LED is used for the light source, a reflection mirror is employed, in which a through-hole is formed with projecting bulb at the center and a plurality of through-holes are formed at the periphery thereof through which LEDs are projecting.
[4] In such a hand-lamp structure in which a incandescent bulb is employed for the light source, when the cover engaged with the front end of the hand-lamp body is turned, the reflection mirror engaged with the cover is moved forward and rearward so that the focus of the bulb can be adjusted. However, in case of the hand-lamp with LEDs arranged at the periphery of the incandescent bulb, when the cover is turned to adjust the focus, a structural problem arises in that the reflection mirror cannot rotate due to its being caught by the LEDs so that it is impossible to adjust the focus of the hand-lamp.
[5]
Disclosure of Invention Technical Problem
[6] The present invention has been made to solve the above-mentioned problem occurring in the conventional prior art, and the object of the present invention is to provide a focus-adjustable flashlight with employing the LEDs and the bulb for the light source, in which the LEDs and the bulb are supported by the holder cover, and the through-hole is formed at the center through which the holder cover passes, so that the focus of the bulb and the LEDs can be adjusted by turning the cover engaged with the front end of the hand-lamp body to move the reflection mirror forward and rearward.
[7]
Technical Solution
[8] To accomplish the above object of the present invention, there is provided a focus- adjustable flashlight comprising a body having a switch, a bulb holder arranged oriented toward the front of the body of the flashlight for receiving and supporting a bulb and a plurality of light emitting diodes, a substrate on which an electric circuit is arranged for lighting the bulb and the light emitting diodes selectively or concurrently by operating the switch, a reflection mirror for forwardly inducing the light of the bulb and the light emitting diodes, and a main cover to which the reflection mirror are secured and which is thread-engaged with the front of the body, wherein a holder cover is installed above the bulb holder so that the bulb and the light emitting diodes are respectively engaged in such a fashion as to project upwardly, and wherein the reflection mirror is formed at the lower center thereof with a through-hole into which an outer peripheral edge of the upper end of the holder cover is rotatably inserted.
[9] In an embodiment of the present invention, an elastic fixed bar is installed at both sides of a body of the holder cover, in which a press portion is formed at the upper portion of the elastic fixed bar, an engaging jaw is formed at the inside lower portion, and a slit is formed at the inside of the fixed bar for increasing the elasticity, so that the engaging jaw can be elastically engaged with a flange portion of the bulb holder.
[10] In another embodiment of the present invention, a flange is formed at a lower surface of the holder cover in such a fashion as to extend outwardly, a supporting tube is formed at a lower portion of the reflection mirror in such a fashion as to project downwardly, and a press spring is installed between the flange of the holder cover and the lower supporting tube of the reflection mirror, so that the holder cover can be supported by the press spring.
[11] In the present invention, the holder cover is made of transparent synthetic resins or plated synthetic resins. Advantageous Effects
[12] As described above, according to the focus-adjusting flashlight of the present invention, an incandescent bulb can be employed as a light source for lighting in a long range and the super power saving LED can be employed as a light source for lighting in a close range, to thereby extend durability of the battery, as the bulb and the LED can be used selectively or concurrently. Especially, the focus of the bulb can be easily adjusted by moving the position of the reflecting mirror forward and rearward using the main cover installed at the front of the body, in case of lighting in the long range.
[13]
Brief Description of the Drawings
[14] Further objects and advantages of the present invention can be more fully understood from the following detailed description taken in conjunction with the accompanying drawings.
[15] FIG. 1 is a cross-sectional view showing exploded state of the reflection mirror, the holder cover, a bulb holder and the cover constituting the present flashlight according to one embodiment of the present invention;
[16] FIG. 2 is a cross-sectional view showing a principal portion of the flashlight in which the cover is moved in the forward side according to one embodiment of the present invention;
[17] FIG. 3 is a cross-sectional view showing a principal portion of the flashlight in which the cover is moved in the rearward side according to one embodiment of the present invention;
[18] FIG. 4 is a planar view showing the flashlight of the present invention in which the reflection mirror and the holder cover are engaged with each other;
[19] FIG. 5 is a cross-sectional view showing a principal portion of the flashlight in which the reflection mirror and the holder cover are engaged with each other according to another embodiment of the present invention;
[20] FIG. 6 is a planar view showing the reflection mirror and the holder cover shown in the embodiment of FIG. 5 being engaged with each other.
[21]
Mode for the Invention
[22] Hereinafter, the focus-adjustable flashlight of the present invention will be described in detail with reference to the appended drawings. FIG. 1 is a cross-sectional view showing exploded state of the reflection mirror, the holder cover, a bulb holder and the cover constituting the present flashlight according to one embodiment of the present invention, FIG. 2 is a cross-sectional view showing a principal portion of the flashlight in which the cover is moved in the forward side according to one embodiment of the present invention, FIG. 3 is a cross-sectional view showing a principal portion of the flashlight in which the cover is moved in the rearward side according to one embodiment of the present invention, and FIG. 4 is a planar view showing the flashlight of the present invention in which the reflection mirror and the holder cover are engaged with each other.
[23] As shown in FIGs. 1 and 2, the flashlight of the present invention includes a body 50, a substrate 40, a bulb holder 30, a holder cover 20, a reflection mirror 10, and a main cover 60.
[24] First of all, the body 50 of the flashlight contains an electrical source (not shown), and a switch 51 is provided at one side of the body. The substrate 40, which is installed inside of the body 50, is formed with a circuit for selectively or concurrently operating a bulb 31 and light emitting diodes 32 by the switch 51. Also, the bulb holder 30, which is installed on the substrate 40, is provided with flange portions 33 projecting in both lateral directions, and receives and supports a bulb 31 and a plurality of LEDs 32. The holder cover 20 installed above the bulb holder 30 supports the bulb 31 and the LEDs 32 to project respectively in the forward direction of the body 50. The reflection mirror 10 installed ahead of the holder cover 20 is provided with a through-hole 11 for the reflection mirror at the lower center portion so that the upper end of the holder cover 20 is projected therethrough to thereby radiate lights from the bulb 31 and the LEDs 32. The main cover 60 is thread-engaged with a front end of the body 50, and supports the reflection mirror 10 secured inside thereof, and closes inside of the body 50 by means of a transparent plate 63.
[25] The holder cover 20 can be made of any one material selected from transparent compound resins, plated synthetic resins, opaque synthetic resins. The holder cover 20 is formed with a bulb through-hole into which the bulb 31 is inserted, a plurality of Led through-holes at the periphery of the bulb through-hole into which the LEDs 32 are inserted. Also, the holder cover 20 is formed with an elastic bar 23 at both sides for securing it to the flange portion 33 of the bulb holder 30. The elastic bar 23 is configured to project in the lower and upper sides, in which a press portion 25 is formed at the upper portion, an engaging jaw 24 is formed inside of the lower portion and a slit 26 is formed inside of it to enhance elasticity of the elastic fixed bar 23.
[26] In the present invention, the holder cover 20 is installed to facilitate exchange of the bulb 31 and the LEDs 32.
[27] An assembly method and use state of the flashlight of the present invention will now be described in more detail below.
[28] As shown in FIG. 1, the bulb holder 30 is secured to the substrate 40, the bulb 31 and the plurality of LEDs 32 are respectively located at the bulb holder 30 and connected to the circuit, and then the holder cover 20 is placed above the upper end of the bulb holder 30. In this instance, the lower end engaging jaw 24 is opened a little with elastic force by pressing the press portion 25 above the elastic fixed bar 23 formed at both sides of the holder cover 20, and is inserted into the flange portion 33 of the bulb holder 30. Also, the slit 26, which is a through-hole formed at inside of the elastic fixed bar 23, helps the elastic fixed bar 23 be divulged more smoothly, so that the bulb 31 is projected through the bulb through-hole 21 formed at the center of the holder cover 20 and respective LED 32 is projected through the peripheral LED through-hole 22.
[29] In this instance, a rear cover 62 is engaged with the front end of the body 50, the reflection mirror 10 and the transparent plate 63 are installed at the front of the rear cover 62, and then a front cover 61 is engaged with the rear cover to accomplish the flashlight 1 of the present invention. The reflection mirror 10, the front cover 61, the rear cover 62, and the transparent plate 63 are attached to one another so that they cannot be separated.
[30] As shown in FIG. 2, in the flashlight 1 of the present invention, when the main cover 60 is turned to move forward from the body 50 of the flashlight, the reflection mirror 10 is also turned with the main cover 60 to move forward. Also, as shown in FIG. 3, when the main cover 60 is turned to move rearward from the body 50, the reflection mirror 10 is also turned together with the cover 60 to move rearward. However, the focus of the reflection mirror 10 can be adjusted to be nearer or farther because the bulb 31 and the LEDs 32 are secured to the bulb holder 30 and the holder cover 20. Although the through-hole 11 for the reflection mirror is formed at the center lower end of the reflection mirror 10, the function of the reflection mirror 10 cannot be weakened or the focus of the reflection mirror 10 cannot be made indistinct because of the through-hole 11.
[31] According to the flashlight 1 of the present invention, electrical power consumption can be substantially economized by using the plurality of LEDs 32 formed at the periphery of the bulb 31, after moving the switch 31 to turn off the power, when the flashlight 1 of the present invention is used for lighting a long range by adjusting the focus of the bulb 31 for the long range and then it is used for lighting a close range.
[32] FIG. 5 is a cross-sectional view showing a principal portion of the flashlight in which the reflection mirror and the holder cover are engaged with each other according to another embodiment of the present invention, and FIG. 6 is a planar view showing the reflection mirror and the holder cover shown in the embodiment of FIG. 5 being engaged with each other.
[33] In the embodiment shown in FIG. 5, the holder cover 20a is formed with a bulb through-hole 21a and LED through-holes 22a, and a flange 23a is formed at the lower end of the holder cover so that it can be seated safely on the upper end of the flange portion 33 of the bulb holder 30. A press spring 34 is installed between the flange 23a of the holder cover 20a and the lower portion of a reflection mirror 10a for elastically supporting the holder cover 20a in the downward direction. Also, a support tube 12a is formed to project downward at the lower portion of the reflection mirror 10a for supporting and securing one end of the press spring 34.
[34] Accordingly, the holder cover 20a can be secured to the bulb holder 30 of the bulb 31 and the LEDs 32 without any movement because the other end of the press spring 34, which is secured to the support tube 12a of the reflection mirror 10a, presses the flange 23a of the holder cover 20a against the flange portion 33 by means of the elastic force, although the main cover 60 is turned to move the reflection mirror 10a forward or rearward at the front of the body 50.
[35]
Industrial Applicability
[36] As described above, according to the focus-adjusting flashlight of the present invention, an incandescent bulb can be employed as a light source for lighting in a long range and the super power saving LED can be employed as a light source for lighting in a close range, to thereby extend durability of the battery, as the bulb and the LED can be used selectively or concurrently. Especially, the focus of the bulb can be easily adjusted by moving the position of the reflecting mirror forward and rearward using the main cover installed at the front of the body, in case of lighting in the long range.
[37]
[38] While the present invention has been described with reference to the preferred embodiments, the present invention is not restricted by the embodiments. It is to be appreciated that those skilled in the art can change or modify the embodiments without departing from the scope and spirit of the present invention. However, such variations and modifications are all pertained to the scope of the present invention.

Claims

Claims
[1] A focus-adjustable flashlight comprising a body 50 having a switch 51, a bulb holder 30 arranged oriented toward the front of the body 50 of the flashlight for receiving and supporting a bulb 31 and a plurality of light emitting diodes 32, a substrate 40 on which an electric circuit is arranged for lighting the bulb 31 and the light emitting diodes 32 selectively or concurrently by operating the switch 51, a reflection mirror 10, 10a for forwardly inducing the light of the bulb 31 and the light emitting diodes 32, and a main cover 60 to which the reflection mirror 10, 10a are secured and which is thread-engaged with the front of the body 50, wherein a holder cover 20, 20a is installed above the bulb holder 30 so that the bulb 31 and the light emitting diodes 32 are respectively engaged in such a fashion as to project upwardly, and wherein the reflection mirror 10, 10a is formed at the lower center thereof with a through-hole 11, 11a into which an outer peripheral edge of the upper end of the holder cover 20, 20a is rotatably inserted.
[2] The flashlight according to claim 1, wherein an elastic fixed bar 23 is installed at both sides of a body of the holder cover 20, in which a press portion 25 is formed at the upper portion of the elastic fixed bar 23, an engaging jaw 24 is formed at the inside lower portion, and a slit 26 is formed at the inside of the fixed bar for increasing the elasticity, so that the engaging jaw 24 can be elastically engaged with a flange portion 33 of the bulb holder 30.
[3] The flashlight according to claim 1, wherein a flange 23a is formed at a lower surface of the holder cover 20a in such a fashion as to extend outwardly, a supporting tube 12 is formed at a lower portion of the reflection mirror 10a in such a fashion as to project downwardly, and a press spring 34 is installed between the flange 23a of the holder cover 20a and the lower supporting tube 12a of the reflection mirror 10a, so that the holder cover 20a can be supported by the press spring 34.
[4] The flashlight according to claim 1, wherein the holder cover 20, 20a is made of transparent synthetic resins or plated synthetic resins.
PCT/KR2005/003360 2004-10-14 2005-10-10 A focus-adjustable flashlight Ceased WO2006080738A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020040082296A KR20060033280A (en) 2004-10-14 2004-10-14 Adjustable flashlight
KR10-2004-0082296 2004-10-14

Publications (1)

Publication Number Publication Date
WO2006080738A1 true WO2006080738A1 (en) 2006-08-03

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WO (1) WO2006080738A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009127184A1 (en) * 2008-04-16 2009-10-22 Geuder Ag Light source for injecting light into a hand-held medical appliance
CN103363475A (en) * 2012-03-26 2013-10-23 海洋王照明科技股份有限公司 Light source structure and flashlight with same
CN104295939A (en) * 2014-10-28 2015-01-21 济南大学 Multifunctional flashlight

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109442270B (en) * 2018-10-30 2021-05-18 张优苗 Novel atmosphere lamp

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Publication number Priority date Publication date Assignee Title
KR19980057336U (en) * 1997-02-01 1998-10-15 고만진 Mini flashlight
KR20010043065A (en) * 1999-03-03 2001-05-25 제델 Portable electric torch with dual lighting and adjustable focus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR19980057336U (en) * 1997-02-01 1998-10-15 고만진 Mini flashlight
KR20010043065A (en) * 1999-03-03 2001-05-25 제델 Portable electric torch with dual lighting and adjustable focus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009127184A1 (en) * 2008-04-16 2009-10-22 Geuder Ag Light source for injecting light into a hand-held medical appliance
US8556485B2 (en) 2008-04-16 2013-10-15 Geuder Ag Light source for coupling light into a medical hand-held device
CN103363475A (en) * 2012-03-26 2013-10-23 海洋王照明科技股份有限公司 Light source structure and flashlight with same
CN104295939A (en) * 2014-10-28 2015-01-21 济南大学 Multifunctional flashlight

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