Insect attracting and eliminating device

Abstract

An insect elimination device has an outer grid with an inner grid disposed within the outer grid. A voltage source powers the inner grid, the outer grid or both. A warming tube is disposed within the inner grid and provides a thermal lure. A UV light source is disposed within the warming tube to provide a first optical lure. A control circuit controls the duty cycle, which is greater than 0% and less than 100%, of the UV light source while the voltage source is powering the elimination zone of the inner grid and the outer grid to keep the thermal lure within a predetermined temperature range.

What is claimed is: 
     
         1 . An insect attracting device comprising:
 an outer grid;   an inner grid disposed at least partially within the outer grid, wherein a spacing between the outer grid and the inner grid corresponds to the elimination zone;   a voltage source powering at least one of the inner grid and the outer grid;   a thermal lure disposed in a predetermined position in relation to the elimination zone, the thermal lure disposed at least partially within the inner grid or the outer grid;   a first optical lure disposed in relation to the elimination zone and thermally coupled to the thermal lure;   a second optical lure that is different from the first optical lure; and   a control circuit to control the first optical lure to thereby control a temperature of the thermal lure, and the control circuit maintains the second optical lure in an on state during a period of time that the first optical lure is cycled to an off state.   
     
     
         2 . The insect attracting device of  claim 1 , wherein the control circuit controls at least a duty cycle of operation of the first optical lure to be greater than 0% and less than 100% while the voltage source is powering the at least one of the inner grid and the outer grid, so as to maintain the thermal lure within a predetermined temperature range. 
     
     
         3 . The insect attracting device of  claim 2 , wherein the thermal lure includes a warming tube disposed at least partially within the inner grid, and the first optical lure is disposed at least partially within the warming tube. 
     
     
         4 . The insect attracting device of  claim 3 , wherein the control circuit is configured to control the duty cycle to maintain the warming tube within a predetermined temperature range of between 34° C. and 42° C. 
     
     
         5 . The insect attracting device of  claim 2 , wherein the thermal lure includes a warming tube disposed at least partially within the outer grid, and the first optical lure is disposed at least partially within the warming tube. 
     
     
         6 . The insect attracting device of  claim 5 , wherein the control circuit is configured to control the duty cycle to maintain the warming tube within a predetermined temperature range of between 34° C. and 42° C. 
     
     
         7 . The insect attracting device of  claim 2 , further comprising a duty cycle selector, wherein the control circuit controls the duty cycle of the first optical lure according to a signal generated by the duty cycle selector. 
     
     
         8 . The insect attracting device of  claim 2 , wherein the control circuit comprises a light sensor to detect a level of ambient light to produce a sensor signal and the control circuit utilizes the light sensor signal to determine a mode of operation of the insect attracting device. 
     
     
         9 . The insect attracting device of  claim 8 , wherein the mode of operation includes a first mode where the insect attracting device operates at select times dependent on the ambient light and a second mode where the insect attracting device remains on at all times. 
     
     
         10 . The insect attracting device of  claim 1 , wherein the inner and outer grids are cylindrical. 
     
     
         11 . The insect attracting device of  claim 1 , wherein the elimination zone between the inner grid and the outer grid is from 6.0 mm to 9.0 mm. 
     
     
         12 . The insect attracting device of  claim 1 , wherein an outer grid mesh spacing is greater than an inner grid mesh spacing. 
     
     
         13 . The insect attracting device of  claim 12 , wherein the outer grid mesh spacing is sufficiently large to allow target insects through the outer grid, and the inner grid mesh spacing is sufficiently small to block target insects from proceeding through the inner grid. 
     
     
         14 . The insect attracting device of  claim 1  wherein the thermal lure comprises material transparent or translucent to energy generated by the optical lure. 
     
     
         15 . The insect attracting device of  claim 1 , further comprising a chemical lure. 
     
     
         16 . A method for attracting an insect comprising:
 utilizing a first optical lure to lure the insect towards an electrically charged surface charged by a voltage source;   utilizing a secondary optical lure that is different from the first optical lure to further lure the insect towards the electrically charged surface;   warming a thermal lure to further lure the insect towards the electrically charged surface;   controlling a duty cycle of the first optical lure to maintain the thermal lure within a predefined temperature range; and   maintaining the second optical lure in an on state during a period of time that the first optical lure is cycled to an off state.   
     
     
         17 . The method of  claim 16 , further comprising utilizing a chemical lure to further lure the insect towards the electrically charged surface. 
     
     
         18 . The method of  claim 16 , further comprising reducing an operational level of the first optical lure while maintaining activity of the voltage source to continue electrically charging the electrically charged surface. 
     
     
         19 . The method of  claim 16 , further comprising disposing the first optical lure at least partially within the thermal lure. 
     
     
         20 . The method of  claim 19 , further comprising providing the thermal lure with material transparent or translucent to energy generated by the first optical lure.