Ultraviolet light

Abstract

To prevent a resin constituting a reflection part provided around an LED (light source) from being degraded by ultraviolet light, in a light for emitting ultraviolet light.SOLUTION: An ultraviolet light 1 includes an LED 2 for emitting ultraviolet light, and a reflection part 3 which is provided around the LED 2, and reflects the ultraviolet light emitted from the LED 2 so as to be directed frontward, wherein the reflection part 3 has a resin layer 5, an undercoat layer 6 which is laminated on the surface of the resin layer 5, and cuts ultraviolet light, an aluminum layer 7 which is laminated on the surface of the undercoat layer 6, and a top coat layer 8 which is laminated on the surface of the aluminum layer 7, suppresses oxidation of the aluminum layer 7 and permeates the ultraviolet light therethrough.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to ultraviolet lights. [Background technology]

[0002] Patent Document 1 discloses an ultraviolet light having at least one LED (light source) that irradiates light containing ultraviolet rays. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3148028 Summary of the Invention [Problem to be solved by the invention]

[0004] Since resin can be freely designed into any shape by molding, not only the exterior of the ultraviolet lamp but also the components surrounding the ultraviolet light source are often made of resin. However, if there are resin components near the ultraviolet light source, there is a problem that the resin components will deteriorate due to ultraviolet rays.

[0005] The present invention has been made in consideration of these points, and its purpose is to prevent the resin that makes up the reflective part located around the light source in a light that irradiates ultraviolet rays from being deteriorated by ultraviolet rays. [Means for solving the problem]

[0006] The first invention relates to an ultraviolet lamp including a light source that irradiates ultraviolet rays, and a reflector that is provided around the light source and reflects the ultraviolet rays irradiated from the light source so that the ultraviolet rays are directed forward. The reflector includes a resin layer, an undercoat layer that blocks ultraviolet rays and is laminated on the surface of the resin layer, an aluminum layer that is laminated on the surface of the undercoat layer, and a topcoat layer that suppresses oxidation of the aluminum layer and transmits ultraviolet rays and is laminated on the surface of the aluminum layer.

[0007] In this first invention, the reflecting portion has an aluminum layer, so that most of the ultraviolet light emitted from the light source and reaching the reflecting portion is reflected by the aluminum layer and travels forward. The reflecting portion has an undercoat layer on the back side of the aluminum layer that blocks ultraviolet light, so that the ultraviolet light that is not reflected by the aluminum layer and passes through to the back side of the aluminum layer is blocked by the undercoat layer, thereby suppressing deterioration of the resin layer of the reflecting portion due to ultraviolet light. Furthermore, the reflecting portion has a topcoat layer laminated on the surface of the aluminum layer, which suppresses oxidation of the aluminum layer. Effect of the Invention

[0008] As described above, according to the present invention, it is possible to prevent the resin constituting the reflecting portion provided around the light source from being deteriorated by ultraviolet rays. [Brief description of the drawings]

[0009] [Figure 1] FIG. 2 is a perspective view showing an ultraviolet light according to an embodiment. [Diagram 2] FIG. 2 is a cross-sectional view taken along line II-II of FIG. [Diagram 3] FIG. 3 is an enlarged view of the area enclosed by the dashed line in FIG. 2. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following description of the preferred embodiments is merely exemplary in nature and is not intended to limit the present invention, its application or its uses.

[0011] (Embodiment) 1 and 2 show an ultraviolet light 1 according to an embodiment of the present invention. The use of this ultraviolet light 1 is not limited, but for example, it can be used as a light for detecting Anisakis, since it can illuminate Anisakis parasitizing fish by irradiating it with ultraviolet (UV) light, making it easier to see.

[0012] As shown in Fig. 2, the ultraviolet light 1 comprises an LED 2 as a light source that irradiates ultraviolet light, a reflecting section 3 that is provided around the LED 2 and reflects the ultraviolet light, and a lens 4 that is provided in front of the LED 2 and the reflecting section 3. The ultraviolet light irradiated from the LED 2 mainly travels forward (towards the lens 4), but some of it also travels in the direction of the surrounding reflecting section 3. The ultraviolet light that travels in the direction of the reflecting section 3 is reflected by the reflecting section 3 and travels forward.

[0013] Although not shown, the ultraviolet light 1 includes a battery and a switch for turning on / off the ultraviolet light irradiation of the LED 2 using the electromotive force of the battery.

[0014] 3 is an enlarged view of the vicinity of the surface of the reflective section 3. Most of the reflective section 3, excluding the surface portion, is composed of a resin layer 5. Specifically, the reflective section 3 has the resin layer 5, an undercoat layer 6 laminated on the surface of the resin layer 5, an aluminum layer 7 laminated on the surface of the undercoat layer 6, and a topcoat layer 8 laminated on the surface of the aluminum layer 7.

[0015] From the viewpoint of being less susceptible to deterioration by ultraviolet rays, the resin layer 5 preferably contains a UV-resistant agent such as a benzotriazole or triazine agent, or is UV-transparent. An example of the material of the UV-transparent resin layer 5 is polymethyl methacrylate (PMMA).

[0016] The undercoat layer 6 is made of a material that blocks ultraviolet rays, and has a thickness of, for example, 3 μm to 40 μm. The undercoat layer 6 "blocks" ultraviolet rays means that the undercoat layer 6 absorbs or reflects ultraviolet rays so that the ultraviolet rays do not escape to the back side (resin layer 5). The undercoat layer 6 that absorbs ultraviolet rays can be obtained by applying a coating material containing a polymeric ultraviolet absorber such as a benzophenone-based or benzotriazole-based material to the resin layer 5.

[0017] The aluminum layer 7 is laminated by vacuum deposition plating on the resin layer 5. The thickness of the aluminum layer 7 is, for example, not less than 30 nm and not more than 60 nm.

[0018] The topcoat layer 8 is made of a material that suppresses oxidation of the aluminum layer and transmits ultraviolet rays, such as nylon.

[0019] (Action and effect) In this embodiment, since the reflective section 3 has the aluminum layer 7, most of the ultraviolet rays irradiated from the LEDs 2 and reaching the reflective section 3 (for example, about 90% of the total amount of ultraviolet rays reaching the reflective section 3) are reflected by the aluminum layer 7 and head forward (see the solid arrow in FIG. 3). Since the reflective section 3 has an undercoat layer 6 on the back side of the aluminum layer 7 that blocks ultraviolet rays, the ultraviolet rays that are not reflected by the aluminum layer 7 and pass through the back side of the aluminum layer 7 (see the dashed arrow in FIG. 3) are blocked by the undercoat layer 6, and deterioration of the resin layer 5 of the reflective section 3 due to ultraviolet rays can be suppressed.

[0020] Furthermore, in the reflective portion 3, the top coat layer 8 laminated on the surface of the aluminum layer 7 suppresses oxidation of the aluminum layer 7. Since the top coat layer 8 transmits ultraviolet rays, the amount of ultraviolet rays irradiated forward by the light is less likely to be attenuated by the top coat layer 8. [Industrial Applicability]

[0021] The present invention is useful as an ultraviolet light. [Explanation of symbols]

[0022] 1. UV light 2 LED (light source) 3 Reflector 4 Lenses 5 Resin layer 6 Undercoat layer 7 Aluminum Layer 8 Topcoat Layer

Claims

[Claim 1] A light source that irradiates ultraviolet light; A reflector provided around the light source and configured to reflect ultraviolet light emitted from the light source so that the ultraviolet light is directed forward, The reflecting portion is A resin layer; an undercoat layer for blocking ultraviolet rays laminated on a surface of the resin layer; an aluminum layer laminated on a surface of the undercoat layer; a topcoat layer laminated on a surface of the aluminum layer, the topcoat layer inhibiting oxidation of the aluminum layer and allowing ultraviolet light to pass therethrough; With ultraviolet light.

Images