JP4585532B2 - Dat site - Google Patents

Description

  The present invention relates to an optical sight mounted on a firearm such as a handgun or a rifle, for example, and relates to a so-called datsite.

  FIG. 3 is an explanatory diagram showing the structure of a conventional dart site. In FIG. 3, 11 is an external housing, 12 is a lens, 13 is an internal housing, 14 is a power source, 15 is a circuit board, 16 is a pinhole plate, 17 is a light source consisting of a light emitting diode (LED), and 18 is a gunner's eye. , 19 is a dat site.

  That is, power from the power supply 14 is supplied to the circuit board 15, and the circuit board 15 drives a light source 17 made of a light emitting diode with current. A light source 17 made of a light emitting diode emits light by current driving, and the emitted light is irradiated to the lens 12 through the pinhole plate 16. In this state, when the gunner's eye 18 looks into the dart site 19 in the direction of arrow A, a red small circular dot is visible. In this case, it is easy to see the dart site 19 having small dots and bright dots.

  The conventional dart site 19 normally uses a light emitting diode as the light source 17. The beam shape of the light emitting diode used as the light source 17 in the dart site 19 needs to emit a small circular light. Therefore, when a light emitting diode is used as the light source 17, a small circular beam light is generated by disposing a pinhole plate 16 having a small hole diameter in the light emitting portion of the light emitting diode of the light source 17.

  4A and 4B are a front view and a side view illustrating a conventional light emitting diode, and FIG. 5 is a side view illustrating a conventional processed light emitting diode and a pinhole plate. 4 and 5, 21 is an epoxy resin, 22 is a light emitting surface of a light emitting diode, 23 is a reflector, 24 and 25 are electrodes, 26 is a pinhole plate, and 27 is a light emitting diode as a light source. In addition, A shown by oblique lines is a portion (position) where light is actually emitted on the light emitting surface 22 of the light emitting diode.

  That is, the brightness of the dot site dots is brighter when the pinhole plate is closer to the light emitting surface of the light emitting diode. As shown in FIGS. 4A and 4B, a normal light emitting diode has a light emitting surface 22 of the light emitting diode protected by an epoxy resin, and is about 3 mm from the light emitting surface 22 to the tip of the epoxy resin 21. Therefore, as shown in FIG. 5, the epoxy resin 21 of the light emitting diode 27 is cut to the edge of the light emitting surface 22 of the light emitting diode, and the pinhole plate 26 is disposed so as to be close to the light emitting surface 22 of the light emitting diode.

  The size of the dot site dot is determined by the diameter of the hole in the pinhole plate 26. The hole of the pinhole plate 26 is circular with a diameter of about 0.1 mm or less, and the light emitting diode 27 as a normal light source has an area of the light emitting surface 22 of about 0.5 mm square. The light emitting surface 22 of the light emitting diode 27 serving as the light source has a strong light emission position and a weak light emission position, and the brightness of the dots varies greatly depending on which position of the light emission surface 22 the hole of the pinhole plate 26 is located. Therefore, it arrange | positions so that the hole of the pinhole board 26 may be located in the part A which is actually light-emitting in the light emission surface 22 of a light emitting diode.

The brightness of the dot site dot is brighter when the current driving the light emitting diode is larger. A dart site is a portable device that is attached to a firearm, and is driven by a battery. Therefore, only light-emitting diodes that are bright and have low current consumption are screened and used at the time of manufacture.
Japanese Patent Laid-Open No. 7-56088 JP 2002-538403 A JP-T-2001-520359 JP-T-2004-536269

  The prior art has a problem in that the brightness of the dartite dots varies greatly depending on the positional relationship between the hole position of the pinhole plate and the light emitting surface of the light emitting diode.

  Moreover, since only about 0.2% of the light emitted from the light emitting diode passes through the hole of the pinhole plate, the light source structure has poor light emission efficiency with respect to the drive current.

  In addition, screening, cutting, and attaching a pinhole plate while adjusting the position of the light emitting diode are costly at the time of production.

  Therefore, it is necessary to devise a light source structure and an internal structure with a small emission diameter and good luminous efficiency.

  The present invention has been made in view of the above circumstances. By using a light source with low current consumption, a small emission diameter, and good emission efficiency, a dart site having small dots, bright dots, and easy-to-see dots is provided. For the purpose.

In order to achieve the above object, a dart sight of the present invention includes a sealed outer housing, an inner housing provided in the outer housing and forming a light passage, and a tip portion of the inner housing. a lens for the reflective coating is applied, the provided at the rear end of the inner housing, the area of the light-emitting surface is 0.1mm to irradiate the lens through within the inner housing the generated light without the light shielding by the pinhole plate The light source is composed of a point light emitting diode that is small and does not need to be shielded by a pinhole plate, and a power source that supplies current to the light source.

  Further, the present invention is characterized in that a light shielding plate is provided at the dart site so as to prevent the reflected light inside the light source made of a point light emitting diode from being emitted into the inner housing.

  Further, the present invention is characterized in that, in the dart site, the inner surface of the inner housing is processed to be uneven so that light from a light source made of a point light emitting diode is not irregularly reflected.

  Further, the present invention is characterized in that the dartite is filled with nitrogen in the outer housing.

  According to the present invention, only about 0.2% of the light emitted from the conventional light emitting diode is used as the light source, and almost 100% can be used. The current consumption can be reduced. In addition, since it is not necessary to adjust the position of cutting of the light emitting diode and mounting of the pinhole plate, the manufacturing method becomes easy and the cost can be reduced.

  It provides a clean dot dart site where there is no unnecessary light on the dots.

  A dart site that does not cause a ghost from the inner wall surface of the housing and is easy to see dots is provided.

  A dart site that does not cause condensation even if there is a temperature difference and that allows easy viewing of dots is provided.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an explanatory diagram illustrating a dart site according to an embodiment of the present invention. In FIG. 1, 41 is an external housing, 42 is a lens, 43 is an internal housing, 44 is a power supply, 45 is a circuit board, 46 is a light shielding plate, 47 is a light source made up of a point light emitting diode (LED), and 48 is an example of uneven processing. Reference numeral 49 denotes a dart site.

  As shown in FIG. 1, the outer housing 41 is configured such that both end surfaces are sealed with transparent glass. A power source 44 and a circuit board 45 made of a battery are provided on the external housing 41. The circuit board 45 current-drives the point light emitting diode of the light source 47 with the power supplied from the power supply 44. An inner housing 43 that forms a light passage is provided inside the outer housing 41, and a lens 42 that is provided with a partially reflective coating is provided at the tip of the inner housing 43. A light source 47 composed of a point light emitting diode is provided at the rear end of the inner housing 43, and a light shielding plate 46 is provided in the vicinity of the light emitting surface of the light source 47 so that the reflected light inside the light source 47 is not emitted into the inner housing 43. Provided. The light emitted from the light source 47 formed of the point light emitting diode is irradiated through the inner housing 43 to the lens 42 on which the partial reflection coating is applied.

  On the inner surface of the inner housing 43, a concave and convex process such as a groove 48 is provided so that light from the light source 47 made of a point light emitting diode is not diffusely reflected. That is, the light emitted from the light source 47 made of a point light emitting diode is diffusely reflected on the inner wall surface of the inner housing 43 and a ghost is generated in the field of view, making it difficult to see the dots. Therefore, by forming a groove 48 on the inner wall surface of the inner housing 43 and carrying out antireflection processing, a dart site 49 is provided in which it is difficult for ghosts to occur and dots are easy to see.

  Further, the inside of the outer housing 41 is filled with nitrogen, and by filling the inside of the outer housing 41 with nitrogen and sealing it, dew condensation can be prevented even when the temperature of the dart site 49 changes. In other words, if you go back and forth in an environment with a temperature difference, condensation will adhere to the dartite glass, making it difficult to see the dots. Therefore, the inside of the outer housing 41 is filled with nitrogen and sealed to prevent the formation of condensation, and a dart site 49 is provided that makes it easy to see dots even in an environment with a temperature difference.

  That is, electric power from the power supply 44 is supplied to the circuit board 45, and the circuit board 45 current-drives the light source 47 formed of a point light emitting diode. A light source 47 composed of a light emitting diode emits light by current driving, and the emitted light is irradiated through a light shielding plate 46 to a lens 42 to which a partial reflection coating is applied. In this state, when the gunner looks into the dart site 49, red small circular dots are visible. In this case, it is easy to see the dart site 49 having small dots and bright dots.

  FIG. 2 is an explanatory diagram illustrating a point light emitting diode according to an embodiment of the present invention. In FIG. 2, 51 is an epoxy resin, 52 is a light emitting surface of a point light emitting diode, 53 and 54 are electrodes, 55 is a point light emitting diode as a light source, and 46 is a light shielding plate.

  That is, the point light emitting diode body made of a semiconductor having the light emitting surface 52 is driven by the current supplied through the electrodes 53 and 54. The point light emitting diode main body is driven by current to emit light from the light emitting surface 52 and is irradiated through the light shielding plate 46 to the lens provided with the partial reflection coating in the inner housing.

  Since the point light emitting diode 55 has a small light emitting surface area of about 0.1 mm square, light shielding by the pinhole plate is not necessary, so that almost 100% of the light emitted by the point light emitting diode 55 can be used. As a result, the brightness can be significantly increased and the current consumption can be reduced.

  By using such a point light emitting diode 55 as a datsite light source, the dartite luminous efficiency can be improved and the battery life of the battery can be extended many times.

  Further, by arranging the light shielding plate 46, a clean dot without unnecessary light can be obtained. That is, the light emitted from the light source of the point light emitting diode 55 is reflected on the side surface or the back surface of the point light emitting diode 55 to form unnecessary light. If a dart site is produced in this state, the dot shape is blurred and is not a small circle. Therefore, a clean dot free of unnecessary light is provided by arranging a light shielding plate 46 for allowing only necessary light to pass therethrough and shielding excess light.

  In addition, as a point light emitting diode, products, such as Kodenshi, Hamamatsu Photonics, Daido special steel industry, etc., can be used, for example.

  Further, the present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Further, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine suitably the component covering different embodiment.

It is composition explanatory drawing which shows the dart site which concerns on embodiment of this invention. 1 is a configuration explanatory view showing a point light emitting diode according to an embodiment of the present invention. It is composition explanatory drawing which shows the conventional dat site. (A), (b) is front structure explanatory drawing and side surface explanatory drawing which show the hole of the conventional light emitting diode and a pinhole board. It is side surface explanatory drawing which shows the conventional light emitting diode and a pinhole board.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 41 ... External housing, 42 ... Lens, 43 ... Internal housing, 44 ... Power supply, 45 ... Circuit board, 46 ... Light-shielding plate, 47 ... Light source consisting of point light emitting diode (LED), 48 ... Groove as an example of uneven | corrugated processing, 49 ... Dat site.

Claims (4)

A sealed outer housing;
An inner housing provided in the outer housing and forming a light path;
A lens provided at the tip of the inner housing and provided with a partially reflective coating;
Provided at the rear end of the inner housing, the light emitting surface that irradiates the lens to the lens through the inner housing without blocking the generated light by the pinhole plate is as small as 0.1 mm square, and is blocked by the pinhole plate. A light source consisting of unnecessary point light emitting diodes,
A dattsite, comprising: a power source for supplying current to the light source.   2. The dart site according to claim 1, wherein a light shielding plate is provided so that reflected light inside the light source made of a point light emitting diode is not emitted into the inner housing.   The dart site according to claim 1 or 2, wherein the inner surface of the inner housing is processed to be uneven so that light from a light source made of a point light emitting diode is not diffusely reflected.   The dartite according to any one of claims 1 to 3, wherein the outer housing is filled with nitrogen.

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