JPH02152157A - Insect control luminous lamp - Google Patents

Abstract

PURPOSE:To improve the preventive effect of insect luring by forming a metallic membrane of specific transmissivity to a bulb or a cover. CONSTITUTION:A membrane of a metal or a metal compound such as Si, Ge, Al2O3, CeO2, HfO2, SiO2, SiO, TiO2, TiO, Ti2O2, Ti2O5, ZrO2, and MgF2, formed in a multilayer to a bulb or a cover of a luminous lamp, has a selective light transmission property that the transmissivity for the wavelengths less than 400nm is less than 20%, while that of 405nm or more is 80% or more. Such a membrane generally presents the peak of the light beam transmissivity in the wavelength region between 400 and 405nm, and the transmissivity in the region less than 400nm is limited in the scope 0-20%. As the membrane formation, a vacuum evaporation, a spattering, an ion plating, and the like are preferable, and it is desirable to make in an even multilayer membrane with the mean membrane thickness 1-3mum. By such a constitution, the luring of insects can be prevented effectively.

Description

[Detailed description of the invention] (Industrial application field) The present invention both prevents and prevents insect attraction.

[Conventional technology]

In general, many insects are known to have photoluminescence, which activates in response to light in the ultraviolet wavelength range of 300 to 400 nm, and this propensity is used to reduce the transmission or radiation of ultraviolet rays. Conventionally, methods have been proposed for attracting insects and suppressing their activities.

For example, Japanese Patent Application Laid-Open No. 55-23921 describes a material that suppresses the activity of arthropods by allowing them to live under light conditions that substantially block the transmission of light with wavelengths of at least 370 nm or less, especially ultraviolet light. It has been shown that a synthetic resin film coated with or containing an absorbent, temporary, etc. is suitable. In addition, Japanese Patent Publication No. 62-41541 discloses that a film containing an ultraviolet absorber with a 370 nm
Disclosed is a film for a lighting lamp cover made of a transparent tubular-stretched plastic film having a light transmittance of 5% or less in the wavelength region of m or less and a heat shrinkage rate (boiling water) of 10% or more in the circumferential direction. has been done.

[Problems to be Solved by the Invention] However, when applying a conventional film or plate containing an ultraviolet absorber to lighting lights, it is necessary to attach it to the entire surface of the lighting lamp's bulb, cover, etc. Therefore, there is a problem that complicated secondary processing is required when the member has a complicated shape. Furthermore, since the film or tent is made of synthetic resin, its heat resistance is limited, making it unsuitable for members that emit high heat, such as outdoor lighting.

The present invention solves the above-mentioned problems and provides a thin film that can be directly applied to illumination lamp members of any material and shape without requiring secondary processing. The present invention provides an insect-proof lighting lamp having a multilayered structure.

[Means to solve the problem]

That is, the insect-proof lighting lamp according to the present invention has a light transmittance performance in which the light bulb or its cover has a transmittance of 20% or less in the wavelength region of 400 nm or less and a transmittance of 80% or more in the wavelength region of 405 nm or more. It is characterized in that it is formed by forming multiple layers of thin films of metals or metal compounds having .

The types of illumination lamps to which the present invention is directed are ordinary discharge lamps or incandescent lamps, and the objects include tubes and cover members of all shapes made of glass, plastic, etc.

Substances that have the property of reducing transmittance in the wavelength range of 400 nm or less are generally found in many metal elements belonging to the circumferential phase 1 law, but in particular 40001
Metals or metal compounds having selective light transmission performance with a wavelength transmittance of 1 or less and a wavelength transmittance of 20% or less and a wavelength transmittance of 405 nm or more and a wavelength transmittance of 80% or more are Si, Ge, ANz 03
, Ce0z, HFO2, SiO2, Sin.

TiO□, Tie, Tiz 03, Tit 05,
ZrO2 or MgF2. The thin film formed in multiple layers of these metals or metal compounds generally has a particle size of 400 to 405
The light transmittance peaks in the wavelength range of 40 nm.
In the region of 0 nm or less, the transmittance falls within the range of 0 to 20%.

Methods such as vacuum evaporation, sputtering, and ion blasting are preferably used to form a multilayer thin film of metal or metal compound on the surface of a member of an illumination lamp. It is also possible to form a multilayer thin film by immersing the member in molten metal.

The thin film of metal or metal compound formed has an average thickness of 1
It is desirable to have a uniform multi-layer coating with a thickness of ~3 μm; if the thickness is greater than this, the light transmittance as a whole may be reduced.

[For production]

The insect-proof lighting lamp of the present invention has a structure in which a multilayer thin film of metal or metal compound having selective light transmission performance is directly formed on the bulb of the lighting lamp or its cover, but the formation requires complicated secondary processing. The coating itself has a high degree of heat resistance.

When in use, the light transmittance in the wavelength range of 400 ns+ or less is blocked to 20% or less, resulting in insects, especially hemiptera such as aphids, leafhoppers, planthoppers, aphids, scale insects, horned stink bugs, water striders, water mantises, mosquitoes, etc. Diptera such as blackflies, horseflies, horseflies, butterflies, house flies, etc., Lepidoptera such as black moths, hawk moths, brown moths, brown swallowtail moths, and staghorn beetles, Hymenoptera such as syriaptera, Hymenoptera such as yellowtail beetles, carpenter ants, honey bees, etc. It effectively prevents bow attracting and also functions effectively to suppress activity.

〔Example〕

Hereinafter, the present invention will be explained based on examples.

Examples 1 to 4 Using an incandescent light bulb cover as a base material, this was heated to 10-' Torr.
Mg Fz , H f Ox , S i Oz are deposited in a device maintained at the following vacuum level using a vacuum evaporation method.
, TiO□ were sequentially deposited to form a multilayer 'gl film layer on the entire surface.

After measuring the light transmittance of each illumination light cover with a thin film formed thereon using a spectrophotometer, it was placed over an incandescent light bulb and irradiated upward as a illumination light outdoors at night in August. After one hour, the number of insects captured was determined.

For comparison, a cover that does not form a thin film was also tested in the same way, and the capture rate and attraction/prevention rate (reciprocal of the capture rate) were calculated from the number of insects captured on each side, assuming that the number of insects captured in this case was 100%. did.

These results are shown in Table 1 in comparison with the type of coating material formed, the thickness of the coating, and the light transmittance.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to provide an insect repellent lighting lamp that is highly effective in attracting and preventing insects and has a good activity suppressing function, and also does not require secondary processing unlike conventional film types. It becomes possible to easily form a heat-resistant thin film. Therefore, it can be used in all types of lighting such as indoor and outdoor electric lights, automobile and bicycle lights, and flashlights, and exhibits an insect repellent effect.

Claims (1)

[Claims] 1. The light bulb or its cover has a transmittance of 20% or less in the wavelength region of 400 nm or less and 405 nm.
An insect repellent lighting lamp comprising a multi-layered metal or metal compound thin film having a light transmission performance with a transmittance of 80 or more in the above wavelength range. 2. The metal or metal compound that forms the multilayer thin film is
Si, Ge, Al_2O_3, CeO_2, HfO_2
, SiO_2, SiO, TiO_2, TiO, Ti_2
O_3, Ti_2O_5, ZrO_2 or MgF_2
The insect-proof lighting lamp according to claim 1.