JP2005253625A - Light emitting golf ball - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light emitting golf ball which is visible even from far by increasing emitted light luminance compared to a conventional light emitting golf ball and is repeatedly used by replacing a chemical light emitting body without damaging the flying performance by maintaining the balance of the ball. <P>SOLUTION: In the light emitting golf ball, for a ball main body, a plurality of roughly semispherical first void parts are formed from the surface of a core to the inside, second void parts of a diameter smaller than the diameter of the void parts are provided from the bottom parts of the first void parts to the center of the core, narrow holes passed through from the second void parts to the opposite side of the core are opened further, and a transparent cover layer is formed on the core surface. The cylindrical part of the chemical light emitting body formed of the sealing container of a flexible transparent material composed of the cylindrical part and an expanded light emitting part of the diameter larger than that, is densely inserted to the second void part and the light emitting part is fitted to the first void part. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a ball that has a light emitting function and can be used for golf play at night. More specifically, the present invention has a light emitting property superior to that of a conventional light emitting golf ball, and can therefore be seen from a distance. Therefore, the present invention relates to a light emitting golf ball having a flight performance similar to that of a normal ball.

  In recent years, golf courses and baseball stadiums having lighting facilities have been established, and it has become possible to play at night. However, when playing at night using a normal ball, it is good if the ball flies to a place where the light reaches, but if it flies out of the light, it is difficult to find the ball or it is lost. Sometimes it happened.

For this reason, the light emitting golf ball described in Japanese Patent Application Laid-Open No. 62-2974 is a ball that can be used for night play. FIG. 1 shows a structure in which a light emitter is disposed in the portion, and a core ball (core) and a light emitter are covered with a transparent cover from above. This has the disadvantage that the light emitter cannot be replaced. Further, since the light emitter is disposed in a direction orthogonal to the central axis of the core sphere, that is, on the surface of the core sphere (FIG. 1), the total length and diameter of the light emitter are limited. That is, as in the example, there was a problem that the length was 20 mm, the inner diameter was 2 mm, and the outer diameter was 3 mm, and the luminescent liquid had to be small, so that the luminance was not improved. Further, in the process of forming the transparent cover after the luminous body is disposed on the core ball, the glass container in the luminous body is also a factor in generating defective cracks due to the pressure during molding.
JP-A-62-2974

  The present invention has been made in view of the above-mentioned problems, and has higher luminance than conventional light emitting golf balls, and can be viewed from a distance, and can be used any number of times by changing the chemiluminescent material. An object of the present invention is to provide a light emitting golf ball that does not impair its flight performance by maintaining the balance of the ball.

  In order to maintain the balance of the core (ball balance), the minimum number of the plurality of first cavities is four. That is, a virtual equilateral triangular pyramid is made inside the core (FIG. 1), and approximately hemispherical cavities are provided at the four apexes thereof. A regular cube may be assumed inside the core, and eight cavities may be provided on the apex surface. This is an important condition for maintaining the balance of the ball, and as a result, the flight performance is the same as that of a normal golf ball. As described above, since the light emitting portions of the chemiluminescent body are fitted in at least four first cavities, any light emitting portion enters the field of view regardless of the position of the ball.

  The substantially hemispherical first cavity portion has a curved surface as shown in FIG. 2 and may be any shape that efficiently emits light from the central light emitting portion to the outside. Not what you want. In addition, the present invention also includes an object that has irregularities on a curved surface to scatter light. If the core itself is a white material, it is not necessary to provide a light reflecting layer. However, if the core is a material that easily absorbs light, it is painted or aluminum evaporated.

  The second cavity is drilled from the center of the bottom of the first cavity toward the center of the core. The inner diameter of the second cavity is slightly smaller than the diameter of the cylindrical portion of the chemiluminescent body, The hollow portion is tapered so that the cylindrical portion is closely fitted. Thereby, the light emitter is fixed. The chemiluminescent container is flexible and is formed of a transparent or translucent polyethylene or polypropylene synthetic resin by a method such as injection blow or blow molding.

The chemiluminescent body is composed of a cylindrical portion and a light emitting portion having a substantially spherical shape or an elliptical sphere larger than the diameter. For example, the volume in the case of a sphere type is 4/3 × πr ³ (where π is a circumference ratio, r is a radius), and the volume in the case of a simple rod type is πr ² × L (L is the total length) as shown in FIG. Thus, the total length of the spherical shape and the rod shape is the same, and the volume when the diameter of the sphere is set to half of the total length is the spherical shape πr ² × 1/2 × L + 4/3 × π (1/2 × L) ³ , Bar shape is πr ² × L. The total volume of the rod type when the rod type is 20 mm, the diameter is 3 mm, the spherical type is 20 mm, the cylindrical part is 3 mm, and the diameter of the sphere is 10 mm. The rod type is about 0.1413 cm ³ , and the spherical type is about 0. 594 cm ³ , approximately 4 times the liquid volume. Even if the diameter of the sphere is made smaller or an elliptical sphere or the like, it is possible to use a luminescent solution more than twice as much as the rod type.

  A hole for removing the chemiluminescent body is formed by drilling a narrow hole penetrating from the bottom of the second cavity portion to the opposite side through the center of the core. That is, the chemiluminescent material can be removed by inserting a long and thin rod-like object into the narrow hole on the opposite side and pushing the cylindrical portion forward. A transparent or translucent polyamide, polyurethane, polyurea, polybutadiene, or ionomer resin is covered on the surface of the first cavity and the core by an injection molding method or a compression molding method.

  Two types of chemicals that exhibit chemiluminescence are commonly called fluorescent solutions and oxidizing solutions. One of them is sealed in a glass container. For long-term storage, it is more effective to seal a fluorescent solution weak in moisture in a glass container. As an example, the oxidizing solution is dimethyl phthalate, t-butanol, hydrogen peroxide solution and a catalyst, and the fluorescent solution is a composition comprising dibutyl phthalate, oxalic acid ester, and fluorescent material. In addition, as a means of sustaining light emission for a long time, if the oxalic acid ester is added to the fluorescent solution at a solubility higher than that of dibutyl phthalate to precipitate it in a solid state, the solid will be solidified as the reaction of hydrogen peroxide and the oxalic acid ester proceeds. Since the oxalic acid ester is dissolved and the reaction is repeated for the dissolved amount, continuous light emission can be obtained. In this case, the fluorescent material is added in a sufficient amount for long-time emission. Similarly, as a means for maintaining long-time emission, if no solvate and the fluorescent material are present in a solid state, the same as above, Sustained luminescence is obtained.

  When in use, the chemiluminescent body is bent, the glass container inside is split, and when the two chemicals are mixed, light emission begins. The light emitting portion is pushed in with the light emitting portion so that the cylindrical portion of the light emitting body is closely fitted to each second cavity portion. The tip of the light emitting part is prevented from jumping out from the first cavity part. When this ball is hit with a club, the flight curve and direction of the ball are visually recognized by the player. It is also possible to prepare a golf ball in which a chemiluminescent body is disposed in each cavity in advance and cause the chemiluminescent body to emit light by an impact caused by hitting a driver shot at the start.

  According to the present invention, as described above, the structure is the same as that of a normal ball, and the light emitting parts are arranged in a well-balanced manner, so that the flight performance is excellent. Also, compared to conventional light emitting golf balls, the amount of light emitting chemicals essential for improving the luminance of light emission and the light emission duration can be sufficiently secured, and the emitted light is efficiently directed to the outside on the reflective surface. It has an excellent light-emitting property, so that it can be visually recognized not only in a dark place where the illumination does not reach, but also in a flight and from a considerably long distance.

Hereinafter, embodiments of the light emitting golf ball of the present invention will be described in detail with reference to the drawings.
FIG. 2 shows an embodiment of the light emitting golf ball of the present invention. The chemiluminescent body has a total length of 18 mm, the cylindrical portion has a diameter of 3 mm, its length is 9 mm, and the light emitting portion has a substantially egg shape. The maximum diameter was 7.5 mm and the length was 9 mm. The wall thickness is 0.3 to 0.4 mm, and blow molding is performed with a polyethylene resin. A sealed glass tube having a diameter of 2.2 mm, a total length of 16 mm, and a wall thickness of 0.1 mm is placed in the container. In this sealed glass tube, bis (2,4,5-trichloro-6-carboisopentyloxyphenyl) oxalate and 1-chloro-9,10-bis (phenylethynyl) anthracene are dissolved in dibutyl phthalate. In addition, it exists in a solid state. This can be easily produced by adding these two substances to dibutyl phthalate in supersaturation, heating and melting them, pouring them into a glass container in that state, sealing them, and then returning them to room temperature.

After injecting the oxidizing solution from the opening of the cylindrical part 6 of the blow molded container, the sealed glass container 9 is put and the opening is closed to complete. Next, four hemispherical first cavities 2 having a diameter of 11 mm and a depth of 11 mm are formed on the surface of a white core 1 made of butadiene rubber having a diameter of about 40 mm as a main raw material, at positions where the distances between them are all the same ( FIG. 1, FIG. 2). A cover 5 is covered with a transparent ionomer resin around the core. This was done by injection molding.

Thereafter, a hemispherical hole having a diameter of 7.5 mm and a depth of 10 mm is formed in the resin layer filled in the first cavity 2 to form a transparent layer having a thickness of 1 mm on the curved surface of the first cavity 2. The In the present invention, the transparent resin layer in the first cavity is not always necessary. A second cavity 3 having a diameter of 2.98 mm and a depth of 9 mm is opened at the bottom of the first cavity toward the center of the ball. Further, a narrow hole 4 having a diameter of 2.3 mm is penetrated from the second cavity toward the opposite side of the ball. When the chemiluminescent body 8 that has started to emit light is pushed into the four first cavities 2 of the completed golf ball body, the light emitted from the light emitting section 7 with a sufficient amount of liquid is emitted from the white core. 1 is reflected on the inner curved surface of the first cavity 2 and emitted to the outside, so that strong light is obtained.

Explanatory drawing which shows the position which provides a 1st cavity part in the core in one Example of this invention. BRIEF DESCRIPTION OF THE DRAWINGS Sectional explanatory drawing of the light emission golf ball in one Example of this invention.

Explanation of symbols

1. Core, 2. 1. first cavity, 2. second cavity, 4. Small hole, 5. Transparent or translucent cover layer, 6. cylindrical part; Light emitting section, 8. 8. chemiluminescent, Glass container

Claims (6)

  A plurality of substantially hemispherical first cavities are formed from the surface of the core toward the inside, and the first cavities are arranged so as to have the same distance from each other, and from the bottom of the first cavity to the center of the core A second cavity portion having a diameter smaller than the diameter of the cavity portion is provided, a fine hole penetrating from the second cavity portion to the opposite side of the core is opened, and a transparent or translucent cover is formed on the core surface. In a sealed container made of a transparent and transparent material consisting of a cylindrical part and a light emitting part having a larger diameter than the cylindrical part on the ball body on which the layer is formed, a first that exhibits chemiluminescence by mixing. A cylindrical portion of a chemiluminescent body filled with a second chemical in a sealed glass container enclosed with the chemical and sealed in the second cavity is first sealed. A chemiluminescent body with a light emitting part fitted in the cavity is detachable. A light-emitting golf ball which is characterized in that it can be.   A plurality of substantially hemispherical first cavities are formed from the surface of the core toward the inside, and the first cavities are arranged so as to have the same distance from each other, and from the bottom of the first cavity to the center of the core A second cavity portion having a diameter smaller than the diameter of the cavity portion is provided, a fine hole penetrating from the second cavity portion to the opposite side of the core is opened, and the core surface and the surface of the first cavity portion By mixing in a sealed container made of a transparent and transparent material consisting of a cylindrical part and a bulging light emitting part with a larger diameter on the ball body on which a transparent or translucent cover layer is formed. The cylindrical portion of the chemiluminescent body filled with the second chemical in the sealed glass container encapsulated with the first chemical exhibiting chemiluminescence and enclosed in the sealed container is filled in the second cavity. Chemistry in which the light-emitting part is fitted in the first cavity with tightly sealed Emitting golf ball which light body is characterized in that can be attached detachably.   3. The light emitting golf ball according to claim 1, wherein a light reflecting layer is formed on the curved surface of the first cavity.   The light-emitting golf ball according to claim 1 or 2, comprising a core formed of a material having a white color or a color close to white.   The second chemical filled in the sealed glass container is present in the solvent in the form of a solid such as oxalic acid ester and fluorescent substance in the form of powder or crystals, and the first chemical in the container is defined as the oxidizing solution outside the glass container. The light-emitting golf ball according to claim 1 or 2.   The second chemical filled in the sealed glass container is solvent-free, and the oxalic acid ester and the fluorescent substance are present in a solid form such as powder or crystal. The first chemical in the container outside the glass container is the oxidizing solution. The light-emitting golf ball according to claim 1 or 2.

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