KR100898754B1 - Safety wand with lamp - Google Patents

Abstract

The present invention relates to a cane, and more particularly, to a safety cane having a lamp to help walk safely in the dark.

The present invention provides a safety wand equipped with a lamp, the handle including a switch; A cylindrical first body coupled to the handle part; A second body having a diameter smaller than the first body and inserted into the first body to be adjustable in length; A lamp unit provided below the second body and operated by the switch electrically connected to the lamp unit; A light guide tube made of a transparent material screwed to a lower end of the second body; And a bottom plate of an elastic material coupled to a lower end of the light guide tube, wherein the light guide tube has a plurality of light guide ribs on an inner surface thereof, and the light guide rib has a straight portion formed in parallel with the length direction of the light guide tube, It provides a safety wand including an inclined portion formed at an angle of 10 to 25 ° with the longitudinal direction of the light guide.

Cane, Lamp, Light Guide, Reflective Layer

Description

Safety cane with lamp {SAFETY STICK HAVING LAMP}

The present invention relates to a cane, and more particularly, to a safety cane equipped with a lamp to help walking or walking safely even in the dark.

Canes are widely used for leisure or everyday life.

Leisure is used a lot when climbing, and in everyday life it is used a lot of elderly people with disabilities or walks when walking.

When climbing, mountainous terrain is often dark because of the nature of the terrain is often uncomfortable, and if you do not have a separate flash, etc. increases the risk of safety accidents.

Even if you use a cane in your daily life, you can't carry both a cane and a flashlight in a dark night street in a residential or rural area where many street lamps are not installed. Concern was high.

The present invention is to provide a safety wand equipped with a lamp for assisting the safety of the user when walking or walking at night, provided with a lamp in the cane used for leisure or daily life.

The present invention is to provide a safety cane having a lamp that can assist in safe walking and walking.

Another object of the present invention is to provide a safety wand having a light guide tube for effectively guiding and diffusing light of a lamp.

In addition, the present invention is to provide a safety wand that can be further provided with an auxiliary lamp to assist in securing a forward view.

The present invention provides a safety wand equipped with a lamp, the handle including a switch; A cylindrical first body coupled to the handle part; A second body having a diameter smaller than the first body and inserted into the first body to be adjustable in length; A lamp unit provided below the second body and operated by the switch electrically connected to the lamp unit; A light guide tube made of a transparent material screwed to a lower end of the second body; And a bottom plate of an elastic material coupled to a lower end of the light guide tube, wherein the light guide tube has a plurality of light guide ribs on an inner surface thereof, and the light guide rib has a straight portion formed in parallel with the length direction of the light guide tube, It comprises an inclined portion formed to be inclined at an angle of 10 to 25 ° with the longitudinal direction of the light guide tube, wherein the light guide tube is 3 to 10 parts by weight of silver (Ag) powder, fluoro to 100 parts by weight of polycarbonate resin It provides a safety wand characterized in that the material containing 1 to 5 parts by weight of alkylated sulfonic acid salt, 1 to 3 parts by weight of talc, and 0.1 to 0.5 parts by weight of benzotriazole.

Safety wand according to the present invention is provided with a lamp helps to walk or climb safely even if the blade is dark.

In addition, by providing a light guide for guiding and diffusing the light guides and diffuses the light emitted from the lamp around the cane, thereby improving the light efficiency.

In addition, it is also provided with an auxiliary lamp capable of shining the front to bring the effect of securing a forward view.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of a safety wand according to the present invention.

In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description.

In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or custom.

Therefore, definitions of these terms should be based on the contents throughout the specification.

1 is a perspective view showing a safety wand equipped with a lamp according to an embodiment of the present invention, Figure 2 is an exploded perspective view showing a safety wand equipped with a lamp according to an embodiment of the present invention.

As shown, the safety wand 100 according to the present invention from the top of the drawings, made of a synthetic resin material and formed of a substantially T-shaped handle portion 110, the cylindrical material coupled to the handle portion 110 The first body 120, the second body 130 having a smaller diameter than the first body 120 is inserted into the first body 120 to perform a length adjustment function, and the second body 130 A lamp unit 160 provided at a lower portion of the lamp unit, the switch 168 electrically connected to the lamp unit 160 and provided at the handle unit 110, and coupled to a lower end of the second body 130. The light guide tube 140 of the transparent material and the bottom plate 150 of the elastic material is coupled to the lower end of the light guide tube 140.

The present invention provides a structure in which the second body 130 is fixed to the first body 120 to be adjustable in length.

To this end, a plurality of fixing holes 122 are formed in a line along the length direction in the first body 120, and the second body 130 is an elastic protrusion elastically inserted into the fixing hole 122 ( 132 is formed. And, the lower portion of the first body 120 is provided with a connection ring 125. The inner diameter of the connection ring 125 is formed to correspond to the outer diameter of the second body 130, and serves to guide the second body 130 to the center of the first body 120.

The first body 120 and the second body 130 may be manufactured by processing a metal or plastic pipe.

The elastic protrusion 132 provided in the second body 130 is formed in a hemispherical shape, the upper end is protruded through any one of the plurality of fixing holes 122 formed in the first body (120).

By adjusting the length of the second body 130 is accommodated in the first body 120 can be adjusted the length of the entire safety wand. The length adjustment is made in such a way that after pressing the elastic protrusion 132 with a finger, the second body 130 is moved and the elastic protrusion 132 is protruded back to an appropriate fixing hole 122.

The lamp unit 160 supplies power to the light source 162 for emitting light, the light collecting plate 164 for condensing the light emitted from the light source 162 toward the light guide tube 140, and the power source 162. It includes a battery 166, the lamp unit 160 is electrically connected to the switch 168 provided in the handle 110 is operated in accordance with the operation of the switch 168.

As a power source, a battery 166 such as a normal battery or a rechargeable battery is used. As shown in the drawing, the battery 166 is preferably stored in the second body 130.

The power supply line 167 connecting the switch 168 in the battery 166 is wound in a coil shape, so that it can cope with the length adjustment of the second body 120.

The light guide tube 140 is formed of a transparent synthetic resin material and performs a function of properly guiding light emitted from the lamp 160 to the periphery. The optical structure and material will be described later.

The bottom plate 150 may be formed of an elastic material such as natural rubber or synthetic rubber, which may absorb a load or impact generated during use as a part in direct contact with the ground.

3 is a vertical cross-sectional view showing a light guide of the safety wand according to an embodiment of the present invention, Figure 4 is a horizontal cross-sectional view of the light guide along the line I-I of FIG.

As shown, the outer shape of the light guide tube 140 has a cylindrical shape, and a plurality of light guide ribs 142 are formed therein (four in the illustrated embodiment).

3, the light guide rib 142 includes a straight portion 142a formed parallel to the length direction of the light guide tube 140, and a predetermined angle θ of the length direction of the light guide tube 140. Consists of the inclined portion 142b is formed to be inclined.

The light guide ribs 142 are used to guide the light of the lamp to the lower part and diffuse the light in a predetermined range. The straight part 142a serves to guide the light and the inclined part 142b serves to diffuse the light. do.

The surface of the inclined portion 142b is provided with a reflective layer 142c, so that the light of the lamp is reflected on the reflective layer 142c and diffused to the outside. The reflective layer 142c may be formed of a metal layer, and may be formed by, for example, deposition or coating.

The light diffusion range can be controlled by the angle θ of the inclined portion 142b.

The angle θ of the inclined portion 142b is preferably in the range of 10 ° to 25 ° with respect to the longitudinal direction of the light guide tube.

When the angle of the inclined portion 142b is less than 10 °, the diffusion range becomes too narrow, and when the angle of the inclined portion 142b exceeds 25 °, the range becomes wider and the brightness is not good.

Looking at the horizontal cross-section with reference to Figure 4, the light guide rib 142 has a form that increases in width from the center of the light guide tube 140 to the edge. This is to secure a cross-sectional area for guiding light.

In the illustrated embodiment, four light guide ribs 142 are illustrated, but not limited to four, three light guide ribs may be formed, and five or more light guide ribs may be formed. have.

The light guide tube 140 and the light guide rib 142 are integrally formed and may be manufactured by injection molding.

5 is a cross-sectional view schematically showing a path of light emitted from the lamp unit of the safety wand according to the present invention.

As shown, a light collecting plate 164 for condensing light is formed above the light source 162, and a light guide tube 140 including a light guiding rib 142 is disposed below the light source 162. .

Light emitted from the light source 162 is reflected by the light collecting plate 162 to travel in parallel with the longitudinal direction of the light guide tube 140.

The light proceeds along the light guide rib 142 of the light guide tube 140. The straight portion 142a proceeds as it is without changing the path of light, and when the light reaches the inclined portion 142b, It is reflected by the reflective layer 142c formed on the surface and spreads to the surroundings.

6 is a perspective view showing a cane according to another embodiment of the present invention.

As shown, this embodiment is characterized in that the handle further comprises an auxiliary lamp.

The present embodiment includes a subsidiary lamp 170 and a subsidiary lamp switch 172 for controlling the lighting of the subsidiary lamp 170 in front of the handle.

While the lamp unit 160 provided in the second body 130 is for illuminating the ground supported by the cane, the auxiliary lamp 170 serves to illuminate the light so that the front obstacle can be checked. .

The auxiliary lamp 170 may be formed so that the auxiliary lamp 170 can be separately turned on / off as necessary by allowing the lighting to be controlled by a separate auxiliary lamp switch 172.

Power of the auxiliary lamp 170 is supplied from the battery 166 accommodated in the second body (130).

The light guide tube of the cane according to the present invention is based on 100 parts by weight of polycarbonate resin, 3 to 10 parts by weight of silver (Ag) powder, 1 to 5 parts by weight of fluorinated alkylsulfonic acid salt, and 1 to 3 parts by weight of talc. It is preferable that it is a material containing 0.1-0.5 weight part of benzotriazole.

Silver powder and talc act as a diffusing agent to refract / reflect light in the light guide, and the fluorinated alkylsulfonic acid salt acts as an antistatic agent to suppress the generation of static electricity on the surface of the light guide. Benzotriazole has the property of absorbing ultraviolet rays, which absorbs the ultraviolet rays contained in the light generated from the light source, thereby preventing the yellowing of the light guide tube. If the content of these additives is less than the above range, the effect due to the addition is insignificant, and if the content of the additive is greater than the above range, the strength of the light guide tube becomes weak.

Examples and Comparative Examples

Hereinafter, the optical properties and effects according to the composition of the light guide tube according to the present invention will be examined through Examples and Comparative Examples.

1. Manufacturing of Light Guide Tube

Example 1 Injection molding of a material in which a silver powder (3), a fluorinated alkylsulfonic acid salt (1), talc (1), and benzotriazole (0.1) were mixed with respect to a polycarbonate resin (100 g, not more than g) To produce a light guide tube.

Example 2 A composition comprising a silver powder (3), a fluorinated alkylsulfonic acid salt (3), talc (1), and benzotriazole (0.2) was injection molded to a polycarbonate resin (100 g, not more than g). The light guide was made.

Example 3 , The injection molding of the composition which mixed the silver powder (5), the fluorinated alkyl sulfonic acid salt (5), talc (5), and benzotriazole (0.3) with respect to polycarbonate resin (100g, below g) To produce a light guide tube.

Example 4 Injection molding of a composition containing a mixture of silver powder (5), fluorinated alkylsulfonic acid salt (5), talc (3) and benzotriazole (0.4) with respect to polycarbonate resin (100 g, not more than g) To produce a light guide tube.

Example 5 The injection molding of the composition which mixed the silver powder (10), the fluorinated alkyl sulfonic acid salt (5), talc (3), and benzotriazole (0.5) with respect to the polycarbonate resin (100g, below g) To produce a light guide tube.

Comparative Example 1 , a light guide tube was manufactured using only polycarbonate resin.

The light guide tube was manufactured by injection molding the composition which mixed the silver powder (5) and the fluorinated alkylsulfonic acid salt (3) with respect to the comparative example 2 and polycarbonate resin (100g, g or less).

Comparative Example 3 , A polycarbonate resin (100 g, below g) was injection molded into a composition in which a silver powder (20), a fluorinated alkyl sulfonic acid salt (10), talc (5), and benzotriazole (1) were mixed. To produce a light guide tube.

The said Examples 1-5 and Comparative Examples 1-3 were put together in Table 1.

2. Measurement and calculation

The light diffusion rate and the light scattering rate were measured by the light guides manufactured through Examples 1 to 5 and Comparative Examples 1 to 3.

Light scattering rate was measured by haze meter (∑80, Nippon Denkiku Co., Ltd.), and light diffusing rate was measured by variable angle photometer (GC-5000L, Denshoku, Japan). (I ₀ , I ₂₀ , I ₇₀ ) was measured and calculated based on the formula (I ₂₀ + I ₇₀ ) / (2 XI ₀ ) X 100.

3. Results and Analysis

Table 2 shows the results of measuring the light diffusion rate and the light scattering rate of Examples 1 to 5 and Comparative Examples 1 to 3 using the haze meter and variable angle photometer.

Referring to Table 2, in the light guide tube manufactured with the compositions shown in Examples 1 to 5, both the light diffusion rate and the light scattering rate were found to be appropriate levels. However, in Comparative Example 1, the light scattering rate was 92.5%, which was a good value, but the light diffusion rate was 48.7%, which was significantly lower than those in Examples 1 to 5. In Comparative Example 2, both the light diffusion rate and the light scattering rate were relatively lower than those of the Example, and in Comparative Example 3, the light diffusion rate was a good value, but the light scattering rate was insufficient.

Therefore, when the light guide tube having the composition shown in Examples 1 to 5 was used, it was confirmed that the light diffusion and light scattering effects are excellent.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. Will understand.

Therefore, the true technical protection scope of the present invention will be defined by the claims below.

1 is a perspective view showing a safety wand equipped with a lamp according to an embodiment of the present invention;

Figure 2 is an exploded perspective view showing a safety wand equipped with a lamp according to an embodiment of the present invention,

Figure 3 is a vertical cross-sectional view showing a light guide of the safety wand according to an embodiment of the present invention,

4 is a horizontal cross-sectional view of the light guide tube taken along line I-I of FIG. 3;

5 is a cross-sectional view schematically showing a path of light emitted from the lamp unit of the safety wand according to the present invention;

6 is a perspective view showing a safety wand equipped with a lamp according to another embodiment of the present invention.

Claims (7)

A handle unit having a switch; A cylindrical first body coupled to the handle part; A second body having a diameter smaller than the first body and inserted into the first body to be adjustable in length; A lamp unit provided below the second body and operated by the switch electrically connected to the lamp unit; A light guide tube made of a transparent material coupled to a lower end of the second body; And And an elastic bottom plate coupled to the lower end of the light guide tube. The light guide tube has a plurality of light guide ribs on an inner surface thereof, and the light guide rib has a straight portion formed in parallel with the length direction of the light guide tube, and is formed to be inclined at an angle of 10 to 25 ° with the length direction of the light guide tube. A safety wand comprising a portion. A handle unit having a switch; A cylindrical first body coupled to the handle part; A second body having a diameter smaller than the first body and inserted into the first body to be adjustable in length; A lamp unit provided below the second body and operated by the switch electrically connected to the lamp unit; A light guide tube made of a transparent material coupled to a lower end of the second body; And And an elastic bottom plate coupled to the lower end of the light guide tube. The light guide tube has a plurality of light guide ribs on an inner surface thereof, and the light guide rib has a straight portion formed in parallel with the length direction of the light guide tube, and is formed to be inclined at an angle of 10 to 25 ° with the length direction of the light guide tube. Part, The light guide tube is based on 100 parts by weight of polycarbonate resin, 3 to 10 parts by weight of silver (Ag) powder, 1 to 5 parts by weight of fluorinated alkyl sulfonic acid salt, 1 to 3 parts by weight of talc (Talc), benzotriazole 0.1 Safety wand, characterized in that the material containing 0.5 parts by weight. The method according to claim 1 or 2, And a reflective layer on the surface of the inclined portion. The method of claim 3, wherein And the reflective layer is a metal layer. The method according to claim 1 or 2, And an auxiliary lamp disposed to irradiate light forwardly to the handle part, and an auxiliary lamp switch for controlling a power supply of the auxiliary lamp. The method according to claim 1 or 2, The first body has a plurality of fixing holes, The second body is a safety wand, characterized in that it comprises an elastic protrusion inserted into the fixing hole. The method according to claim 1 or 2, The lamp unit includes a light source for emitting light, a light collecting plate for guiding light emitted from the light source to the light guide tube, and a safety wand comprising a battery for supplying power to the light source.

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