Insect trap using UV LEDS

Patent metadata

Field	Value
Publication number	US-10827738-B2
Application number	US-201815860608-A
Country	US
Kind code	B2
Filing date	Jan 2, 2018
Priority date	Jun 30, 2015
Publication date	Nov 10, 2020
Grant date	Nov 10, 2020

Abstract

The present invention relates to an insect trap and, more specifically, to an insect trap which uses UV LEDs as light sources for luring insects and is capable of efficiently radiating luring light. The insect trap according to the present invention comprises a UV LED installation part having a plurality of UV LED light sources installed at intervals on the edge of the outer side surface thereof, and a trap part disposed adjacent to the UV LED installation part. The center lines of the ultraviolet light radiation areas of the UV LED light sources installed on the UV LED installation part are arranged substantially radially, extending outward from the center of the insect trap.

First claim

We claim:

1. An ultraviolet light emitting diode (UV LED) light source provided to an insect trap and radiating ultraviolet (UV) light, the UV LED light source comprising:
a UV LED configured to emit light;
a substrate on which the UV LED is mounted, the substrate being directly or indirectly secured to the insect trap; and
a lens disposed in front of the UV LED and configured to allow all light emitted from the UV LED to be redirected sideways,
wherein a surface of the lens has a first part that is disposed around a central part of the lens and configured to reflect light emitted at an angle smaller than a predetermined angle such that reflected light is redirected the sideways through a second part of the surface of the lens, the second part being apart from the central part by the first part.

2. The UV LED light source according to claim 1 , wherein the lens has a horizontal (X-X) sectional shape in which, at least in some sections, a distance from a light emitting point of the UV LED to an outer surface (E) of the lens increases with increasing distance from a central axis of a light emitting region of the UV LED, the lens comprising a recessed region in horizontal (X-X) sectional view which is centered on the central axis of the light emitting region of the UV LED and extends from the central axis of the light emitting region to a predetermined angle (a 1 ).

3. The UV LED light source according to claim 2 , wherein the recessed region extends slantly outward from the central axis of the light emitting region of the UV LED, with slope gradually decreasing outward.

4. The UV LED light source according to claim 2 , wherein total internal reflection occurs at least part of the recessed region.

5. The UV LED light source according to claim 1 , wherein the lens has a horizontal (X-X) sectional shape substantially the same as half of an ellipse divided along a major axis thereof.

6. The UV LED light source according to claim 1 , wherein the lens has a vertical (Y-Y) sectional shape in which a distance from a light emitting point of the UV LED to an outer surface of the lens decreases with increasing distance from a central axis of a light emitting region of the UV LED.

7. The UV LED light source according to claim 1 , wherein the lens has a vertical (Y-Y) sectional shape substantially the same as half of an ellipse divided along a minor axis thereof.

8. The UV LED light source according to claim 1 , wherein the lens has an elliptical shape with a horizontal (X-X) major axis and a vertical (Y-Y) minor axis in a plan view parallel to the substrate.

9. The UV LED light source according to claim 1 , wherein a portion of the lens facing the UV LED is formed with a light entering surface (I) formed to allow light emitted from the UV LED to enter the lens at a right angle to the light entering surface, the light entering surface having a hemispherical shape centered on a light emitting point of the UV LED.

10. An insect trap comprising: a light emitting structure including a substrate and an ultraviolet light emitting diode (UV LED) light source disposed on the substrate;
a lens disposed to cover the UV LED light source and including a reflective film disposed on a surface of the lens, the reflective film configured to reflect emitted light such that the emitted light reflected by the reflective film is radiated sideways through the lens; and
a trapping unit disposed adjacent to the UV LED light source,
wherein a center line of an UV emission region of the UV LED light source is substantially radially arranged outward from the center of the insect trap.

11. The insect trap according to claim 10 , wherein a horizontal diffusion angle of light from the UV LED light source is greater than a vertical diffusion angle of light from the UV LED light source.

12. The insect trap according to claim 10 , further comprising:
a motion sensor,
wherein any of the UV LED light sources radiating ultraviolet (UV) light toward a region in which motion of a person is detected by the motion sensor is controlled to be turned off.

13. The insect trap according to claim 10 , further comprising:
an illuminance sensor measuring both illuminance of visible light and illuminance of ultraviolet (UV) light,
wherein the UV LED light sources are turned on/off or controlled in light intensity based on the measured illuminance values.

14. The insect trap according to claim 10 , further comprising:
a fan generating an air flow around the insect trap to capture an insect attracted around the insect trap, the fan being operated when an insect is detected to be present around the insect trap,
an infrared light emitting unit emitting infrared light toward a region in which an air flow is generated by the fan; and
an infrared receiving unit receiving infrared light emitted from the infrared light emitting unit in order to detect presence of an insect around the insect trap.

15. An insect trap comprising:
a trapping unit capturing an insect attracted by ultraviolet light (UV) light;
an ultraviolet light emitting diode (UV LED) mount disposed above the trapping unit to be separated therefrom; and
a UV LED light source mounted on the UV LED mount and radiating UV light to attract an insect,
wherein the UV LED light source comprises a UV LED and a substrate on which the UV LED is mounted, and is mounted on the UV LED mount with a central axis of a light emission direction of the UV LED facing downward, the UV LED light source further comprising a conversion unit disposed in front of the UV LED to redirect UV light from the UV LED sideways,
wherein the conversion unit comprises a reflective film reflecting UV light emitted from the UV LED sideways, the reflective film taking the form of a paraboloid which is centered on a light emitting point of the UV LED and allows UV light reflected thereby to be radiated toward the outside of the UV LED mount.

16. The insect trap according to claim 15 , wherein the conversion unit comprises a lens redirecting UV light from the UV LED sideways.

17. The insect trap according to claim 16 , wherein the lens comprises a total internal reflection surface extending slantly outward from the central axis (O) of the light emission direction of the UV LED with a slope gradually decreasing outwards, such that light components emitted from the UV LED at an angle smaller than a predetermined angle with respect to the central axis of the light emission direction can be totally internally reflected by the total internal reflection surface to be redirected sideways.

18. The insect trap according to claim 17 , wherein the lens further comprises a refraction surface extending outward from the total internal reflection surface to refract light components reflected by the total internal reflection surface and light components directly reaching the refraction surface without being reflected by the total internal reflection surface.

19. The insect trap according to claim 16 , wherein the lens extends a predetermined angle around the center thereof to face the outside of the UV LED mount, and the light reflected by the reflective film is radiated toward the outside through the lens, the reflective film being formed on a surface of the lens.

Assignees

• Seoul Viosys Co Ltd

Inventors

• Kim Jong Rack
• Lee Chung Hoon
• Han Kyu Won
• Chang Sang Hyun

Classifications

• Y02B20/40

  Control techniques providing energy savings, e.g. smart controller or presence detection · CPC title

• A01M1/04 Primary

  Attracting insects by} using illumination {or colours (A01M1/08 and A01M1/145 take precedence) · CPC title

• A01M1/10

  Catching insects by using} Traps {(using suction effect A01M1/06) · CPC title

• F21Y2115/10

  Light-emitting diodes [LED] · CPC title

• F21V7/0091

  using total internal reflection · CPC title