JP4405659B2 - Illuminated magnifier - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an illuminated magnifier, and more particularly to an illuminated magnifier using a cold cathode discharge tube.
[0002]
[Prior art]
Conventionally, a magnifying glass with illumination is used so that a presbyopic person with reduced visual acuity can read and work in a dim place.
This illuminated magnifier is configured by arranging a small incandescent bulb or a fluorescent lamp on the magnifier.
[0003]
[Problems to be solved by the invention]
By the way, incandescent bulbs, since the light source is close to a point light source, the illuminated part is local, the entire subject is not uniformly bright, difficult to see, and the light source is biased red, Unlike the color seen in the daytime, there was a problem that accurate color judgment could not be made.
[0004]
Further, in the fluorescent lamp, since the fluorescent lamp itself is large, the magnifying glass is inevitably large, and there is a problem that it is difficult to work with one hand.
[0005]
In order to solve these problems, an illuminating magnifier using a cold cathode discharge tube has been proposed, but in terms of strength, etc., specifically when the magnifier is accidentally dropped, etc. When the cold cathode discharge tube is impacted, there is a problem that the cold cathode discharge tube disposed along the lens holding portion for holding the lens is broken.
[0006]
The present invention is a cold cathode discharge capable of obtaining bright illumination close to white light with low power consumption, in view of the problems of the above-mentioned conventional illuminated magnifier, in particular, the illuminated magnifier using a cold cathode discharge tube. An object of the present invention is to provide an illuminated magnifier that uses a tube and has improved impact resistance when the magnifier is accidentally dropped while reducing the loss of light emitted from the cold cathode discharge tube. .
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the illuminated magnifier of the present invention has a cold cathode discharge tube disposed along a lens holding portion for holding a lens, and a plurality of ring-shaped or tube-shaped cold cathode discharge tubes. In the magnifying mirror with illumination , in which the buffer member made of the synthetic resin is disposed and the cold cathode discharge tube is held by the lens holding portion via the buffer member, the lens holding portion holding the cold cathode discharge tube A material that scatters light is provided.
[0008]
In this magnifying mirror with illumination, a plurality of ring-shaped or tube-shaped synthetic resin buffer members are arranged on the cold cathode discharge tube, and the cold cathode discharge tube is held on the lens holding portion via the buffer member. Therefore, while having the advantage of a cold cathode discharge tube that can obtain bright illumination close to white light with low power consumption, while reducing the loss of light irradiated from the cold cathode discharge tube It is possible to improve impact resistance when the magnifier is accidentally dropped, and to prevent an accident that the cold cathode discharge tube is broken.
[0009]
By disposing a material that scatters light in the lens holding portion that holds the cold cathode discharge tube, the light of the cold cathode discharge tube can be uniformly irradiated.
[0010]
In this case, one surface of the lens holding portion that holds the cold cathode discharge tube can be made of a material that does not transmit light, and the other surface can be formed of a material that transmits light.
[0011]
Thereby, loss of light irradiated from the cold cathode discharge tube can be further reduced while reducing glare.
[0012]
In addition, a light-transmitting film that transmits visible light having a specific frequency can be formed on the cold cathode discharge tube.
[0013]
Thereby, it is possible to perform illumination according to the purpose of use of the magnifying glass, such as illumination with colored light other than white light, or reduction of the amount of emitted ultraviolet light.
[0014]
In addition, a cold cathode discharge tube in which a color rendering phosphor film is formed on a phosphor film can be used as the cold cathode discharge tube.
[0015]
Thereby, illumination with colored light other than white light can be performed according to the intended use of the magnifier.
[0016]
Further, it is possible to form a part where the phosphor coating is not partially provided in the cold cathode discharge tube.
[0017]
Thereby, the loss of light irradiated from the cold cathode discharge tube can be reduced, and the luminous efficiency can be improved.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of an illuminated magnifier according to the present invention will be described below with reference to the drawings.
[0019]
1 to 5 show an embodiment of an illuminated magnifier according to the present invention.
The magnifying glass with illumination includes a cold cathode discharge tube 4 and a glass or synthetic resin lens 5 held by a lens holding portion 2 of the main body 1 made of a material such as a synthetic resin, and a holding portion of the main body 1. 3 includes a discharge circuit 11 for lighting and discharging the cold cathode discharge tube 4 disposed in 3, a power source 12 such as a dry battery, and a switch 13.
[0020]
In this case, the lens holding part 2 is formed integrally with the main body 1 with an inner collar 21 for holding the lens 5 on one surface, and through an intermediate ring 6 formed of a material such as the lens 5 and synthetic resin. Then, a cold cathode discharge tube 4 formed in a loop shape or a rectangle in accordance with the shape of the lens holding portion 2 is disposed along the lens holding portion 2, and further, the composition constituting the other surface of the lens holding portion 2 A fixing ring 8 formed of a material such as resin is fitted to the main body 1 to be configured.
[0021]
For this reason, an inner collar 21 is formed in the lens holding portion 2 at a position where it abuts on the outer peripheral surface of the lens 5 on one surface side, and the lens 5, the intermediate ring 6, and the cold cathode discharge tube 4 are fitted therein. A fitting groove 23 in which the outer peripheral edge 81 of the fixing ring 8 is fitted is formed on the inner peripheral surface on the other surface side through the different diameter step portion 22.
[0022]
The inner collar 21 that holds the lens 5 that constitutes one surface of the lens holding portion 2 is made of a material that does not transmit light, and the fixing ring 8 that constitutes the other surface is made of a material that transmits light. It is desirable to configure each.
Thereby, the loss of the light irradiated from the cold cathode discharge tube 4 can be reduced, reducing the glare at the time of use of the illumination magnifier.
[0023]
In addition, a material that scatters light, such as an aluminum foil or a reflective sheet in which an aluminum foil is formed in a prism shape, is disposed on the back surface side of the inner casing 21 that holds the lens 5 constituting one surface of the lens holding unit 2. Can be set.
Thereby, the light of the cold cathode discharge tube 4 can be irradiated uniformly.
[0024]
In addition, a plurality of (seven in the present embodiment) ring-shaped colorless and transparent synthetic resin buffer members 7 having appropriate elasticity are fitted into the cold cathode discharge tube 4 at substantially equal intervals. The cold cathode discharge tube 4 is sandwiched and held between the lens holding portion 2, specifically, the intermediate ring 6 and the fixed ring 8 via the buffer member 7.
For this reason, the intermediate ring 6 has a tongue-shaped inner collar 62 projecting from the inner circumferential surface of the short cylindrical outer circumferential portion 61, and one surface of the inner collar 62 has a shape along the outer circumferential surface of the lens 5. The other surface is formed in a shape along the outer peripheral surface of the buffer member 7, and one surface of the tongue-shaped inner collar 82 of the fixing ring 8 is formed in a shape along the outer peripheral surface of the buffer member 7. To do.
As a result, while reducing the loss of light irradiated from the cold cathode discharge tube 4, the impact resistance in the case of dropping the magnifier by mistake is improved, and the cold cathode discharge tube 4 is prevented from being damaged. can do.
In this case, the buffer member 7 made of synthetic resin may be formed in a continuous tube shape so as to cover the entire cold cathode discharge tube 4. In this manner, by forming the buffer member 7 made of synthetic resin into a continuous tube shape, even if the cold cathode discharge tube 4 is damaged due to a large impact, the damaged cold cathode discharge tube 4 is damaged. Can be reliably prevented from splashing around.
The continuous tube-shaped synthetic resin buffer member 7 uses a separately manufactured synthetic resin tube and is inserted into the cold cathode discharge tube 4 to be disposed, or the surface of the cold cathode discharge tube 4. Alternatively, a method of forming the buffer member 7 by directly applying a synthetic resin material to the synthetic resin film may be employed, and such an arrangement method is not excluded.
[0025]
By the way, in the cold cathode discharge tube 4 used for this magnifying mirror with illumination, in addition to the cold cathode discharge tube emitting normal white light, as shown in FIG. A cold cathode discharge tube on which the film 9 is formed can be used.
As a result, illumination according to the purpose of use of the magnifying glass, such as illumination with colored light other than white light, or reduction in the amount of emitted ultraviolet light can be performed.
When the buffer member 7 made of synthetic resin is formed in a continuous tube shape so as to cover the entire cold cathode discharge tube 4, a function of allowing visible light having a specific frequency to pass through the buffer member 7. Can be added.
[0026]
Similarly, as the cold cathode discharge tube 4, a cold cathode discharge tube in which a color rendering phosphor film is formed on a phosphor film can be used.
Thereby, illumination with colored light other than white light can be performed according to the intended use of the magnifier with illumination.
[0027]
In addition, as shown in FIG. 6, a cold cathode discharge tube in which a portion 42 where the phosphor film 41 is not provided is formed can be used as the cold cathode discharge tube 4.
In this case, in order to reduce the influence of the ultraviolet rays emitted from the cold cathode discharge tube 4, the phosphor coating is so arranged that the portion 42 not provided with the phosphor coating 41 is located in the portion covered with the lens holding portion 2. A portion 42 where 41 is not provided is set.
Thereby, the loss of the light irradiated from the cold cathode discharge tube 4 can be reduced and the luminous efficiency can be improved.
[0028]
Further, in order to reduce the influence of the ultraviolet rays emitted from the cold cathode discharge tube 4, the lens 5 and the fixing ring 8 are made of a material such as an acrylic resin having a low ultraviolet ray transmittance (see FIG. 7). Is desirable.
[0029]
As described above, the illuminated magnifier of the present invention has been described based on one embodiment thereof, but the present invention is not limited to the configuration described in the above embodiment, and for example, as a power source, Depending on the mode of use, in addition to a dry battery, a rechargeable battery (including direct charging from a commercial power source such as AC100V), an automobile power source (including use of a cigarette lighter, for example), a commercial power source such as AC100V (AC-DC) In order to dissipate the heat generated in the discharge circuit 11 for lighting and discharging the cold-cathode discharge tube 4 to the outside, the power supply can be used in an appropriate combination. The structure is appropriately changed within a range that does not deviate from the purpose, such as forming an air circulation hole through which air naturally circulates or attaching a heat sink to the grip portion 3 in which the discharge circuit 11 is disposed. It is those that can be.
[0030]
【The invention's effect】
According to the illuminated magnifier of the present invention, a plurality of ring-shaped or tube-shaped synthetic resin buffer members are arranged in the cold cathode discharge tube, and the cold cathode discharge tube is held by the lens through the buffer member. Since it is held in the unit, it is possible to enjoy the advantages of a cold cathode discharge tube that can obtain bright illumination close to white light with low power consumption, and loss of light irradiated from the cold cathode discharge tube Magnifier with illumination that can be used for a wide range of applications, improving impact resistance when the magnifier is accidentally dropped, etc., and preventing accidents that could damage the cold cathode discharge tube Can be provided at low cost.
[0031]
By disposing a material that scatters light in the lens holding portion that holds the cold cathode discharge tube, the light of the cold cathode discharge tube can be uniformly irradiated.
[0032]
In addition, by forming one surface of the lens holding portion for holding the cold cathode discharge tube with a material that does not transmit light and the other surface with a material that transmits light, the cold cathode is reduced while reducing glare. Loss of light irradiated from the discharge tube can be further reduced.
[0033]
In addition, by using a light-transmitting film that transmits visible light of a specific frequency on the cold cathode discharge tube, use a magnifying glass, such as lighting with colored light other than white light, or reducing the amount of emitted ultraviolet light. Illumination according to the purpose can be performed.
[0034]
In addition, by using a cold cathode discharge tube in which a color rendering phosphor coating is formed on the phosphor coating, depending on the purpose of use of the magnifying glass, illumination with colored light other than white light is performed. Can do.
[0035]
In addition, by forming a portion where the phosphor coating is not partially provided in the cold cathode discharge tube, loss of light irradiated from the cold cathode discharge tube can be reduced, and luminous efficiency can be improved.
[Brief description of the drawings]
FIG. 1 is a front sectional view showing an embodiment of an illuminated magnifier according to the present invention.
FIG. 2 is a plan view of the same.
FIG. 3 is a side view of the same.
FIG. 4 is a sectional view of the same plane.
FIG. 5 is a front sectional view showing the main part.
FIG. 6 is a cross-sectional view of a tube showing a modification of a cold cathode discharge tube.
FIG. 7 is an explanatory diagram of light transmission characteristics.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main body 2 Lens holding part 21 Inner collar 22 Different diameter step part 23 Fitting groove 3 Gripping part 4 Cold cathode discharge tube 5 Lens 6 Intermediate ring 7 Buffer member 8 Fixing ring 9 Light transmission film

Claims (5)

A cold cathode discharge tube is disposed along a lens holding portion for holding a lens, and a plurality of ring-shaped or tube-shaped synthetic resin buffer members are disposed on the cold cathode discharge tube. In the illumination magnifier in which the cold cathode discharge tube is held in the lens holding portion, the lens holding portion that holds the cold cathode discharge tube is provided with a material that scatters light. Magnifier.   2. The illuminated magnifier according to claim 1, wherein one surface of the lens holding portion for holding the cold cathode discharge tube is made of a material that does not transmit light, and the other surface is formed of a material that transmits light. . 3. The illuminated magnifier according to claim 1, wherein a light-transmitting film that transmits visible light having a specific frequency is formed on the cold cathode discharge tube. 4. The illuminated magnifier according to claim 1, wherein the cold cathode discharge tube is a cold cathode discharge tube in which a color rendering phosphor film is formed on the phosphor film. The illuminated magnifier according to claim 1, 2, 3 or 4 , wherein a part where the phosphor coating is not provided is formed on the cold cathode discharge tube.

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