CN1032880C

CN1032880C - Compound drum-shape lens and navigation lamp using same

Info

Publication number: CN1032880C
Application number: CN 93120982
Authority: CN
Inventors: 任炽亨
Original assignee: SHANGHAI NAVITATION MARK FACTORY
Current assignee: SHANGHAI NAVITATION MARK FACTORY
Priority date: 1993-12-17
Filing date: 1993-12-17
Publication date: 1996-09-25
Anticipated expiration: 2013-12-17
Also published as: CN1091506A

Abstract

The present invention relates to a composite drum-shaped lens and a navigation lamp using the compound drum-shaped lens. The composite drum-shaped lens has the structure that two drum-shaped lenses composed of a plurality of annular dioptric elements are overlapped with each other up and down to form a composite integral body by injection molding by transparent plastics; in the overlapping position of the two lenses, the dioptric elements are designed into common elements which enable a luminous surface and a nonluminous surface of the upper lens and the lower lens to be complementary so as to increase light intensity and omit frame connection, so that the height of the composite drum-shaped lens is smaller than that formed by the two lenses passing through a frame or directly adding; meanwhile, the navigation lamp using the composite drum-shaped lens simple structure and low cost; in addition, when a multiwire lamp bulb is used as the light source, the service life of the lamp can be further extended. The composite drum-shaped lens is suitable for the field of ship navigation channels, railways, airports, etc.

Description

Compound drum-shape and use the navigation light of these lens

The present invention relates to light fixture with drum lens and use the navigation light of these lens.

The signal light that uses in departments such as river channel, railway, airports for the luminous intensity of orientation raising light fixture, all need use lens, the light source that is positioned on the lens certain position is emitted beam penetrate in the desired direction after the lens refraction.For example be entitled as: " High intensitylight beam navigation beaeon: high-strength beam navigation light ", application number are in the patented claim of BE-871911, and the drum lens of navigation light plays this effect exactly.This drum lens in the past as shown in Figure 3, is made up of a plurality of annular dioptric element, and the pointolite that is positioned at focus emits beam, by the element refraction, by parallel ejaculation.Except that center part, all there are Luminous Ring (bright ring) and Luminous Ring (Crape ring) not on all the other all elements.Expression observed light belt on the direction below the A among Fig. 3.The figure bend partly is luminous site not.

In order further to improve the luminous intensity of light fixture, some navigation light as shown in Figure 1 and Figure 2, connects together two drum lenss to them with framework, and two light sources is installed in the focal point F of two lens respectively ₁, F ₂On.This structure is simultaneously luminous because of two lens, helps increasing luminous intensity, and as light source.The probability that two lamps damage simultaneously helps to increase the service life less than the probability that a lamp damages.But this structure, device size, weight are big, cost is also higher, so limited applying of it.

The objective of the invention is to address the above problem, provide and to reduce manufacturing cost, make size, the compound drum-shape that weight reduces of light fixture and use the navigation light of these lens.

The present invention is achieved in that two drum lenss overlapping up and down, with the transparent plastic injection molded is the combined type drum lens of same integral body, this lens inwall is the face of cylinder, for being fit to actual injection moulding withdrawing pattern needs, also its inwall can be made the slightly circular conical surface of constant slope.Allow the element on the overlapping part of two lens be the common elements of two lens up and down again, the light-emitting area that these elements are configured to upper and lower two lens of corresponding lens focus place light source becomes complementary relationship with light-emitting area not.Be not have not light-emitting area on these common elements, utilize the general calculation method (particularly by arranging the distance and the angle of dioptric element slant edge face corresponding point light source) of lens dioptric element, the not light-emitting area of lens element is substituted by the light-emitting area of following lens element, and the not light-emitting area of following lens element is substituted by the light-emitting area of last lens element.As shown in Figure 4, there is not Crape ring shown in Figure 3 in the common elements after complementation.

Owing to take above-mentioned these two measures, make this compound lens not only have the light efficiency of two lens, and save the framework connection.It as the collector lens of navigation light, obviously highly is lower than in the past two lens by the framework or the direct height of addition, thereby can alleviates light fixture weight and minification, and manufacturing cost also decreases.

Further introduce the present invention below in conjunction with accompanying drawing for embodiment.

Fig. 1 is to use the outside drawing that connects one example of light fixture in the past of two drum lenss with framework;

Fig. 2 is the amplification profile of drum lens among Fig. 1;

Fig. 3 is the luminous synoptic diagram of drum lens in the past;

Fig. 4 is the luminous synoptic diagram of compound drum-shape of the present invention;

Fig. 5 is the structural representation of navigation light one embodiment of the present invention;

Fig. 6 is the luminous synoptic diagram of the compound drum-shape of Fig. 5 embodiment.

Embodiments of the invention are the navigation lights that adopt compound drum-shape 1 as shown in Figure 5, and it also comprises lamp socket 6, support 3, two bulb 2 and flashing control circuit plates 7 as light source.Compound drum-shape essence is to have two superimposed compositions of drum lens of a plurality of ring-type elements, and this example with two drum lens one injection moldeds, and allows the circular conical surface of this lens inwall for slightly tilting with the acrylic acid transparent plastic.Make the dioptric element at two lens overlapping part M places make the light-emitting area of upper and lower lens and the common elements of light-emitting area complementation not again.Install respectively by support 3 and be fixed on the focal position of upper and lower lens as two bulbs 2 of light source.Compound drum-shape is anchored on the lamp socket 6 by screw 4 and O-ring seal 5.Fig. 6 illustrates the observed light belt on the direction of present embodiment compound drum-shape, represent the luminous zone of lens down among the figure below the A below the luminous zone of the last lens of expression, the B, the luminous zone of the whole compound lens of expression below the C, oblique line is partly represented Crape ring, obviously, light down simultaneously when two bulbs, there is not Crape ring in the middle part of compound drum-shape, thereby has increased light intensity.In this example, two bulbs also can use two-filament bulb, match with it, set up the used filament failure differentiation and the automatic circuit of changing of two-filament bulb navigation light in the prior art on the former flashing control circuit plate 7 in lamp socket 6 again.Thereby greatly prolong the serviceable life of present embodiment navigation light, and this navigation light can be controlled two lamps on demand and use simultaneously, perhaps uses in turn, under the former instance, can strengthen light intensity; Under the latter instance, can make navigation channel department save the expense of going to sea of transposing navigation light greatly.Certainly, the two-filament bulb that bulb used in the present invention is not only limited to embodiment and is limited also can use three poly-lights such as bulb, and further prolonged the serviceable life of navigation light.

Claims

1. light fixture compound drum-shape, have by the superimposed drum lens of forming of a plurality of annular dioptric elements, it is characterized in that: its structure is the drum lens of two superimposed compositions of above-mentioned dioptric element, one constitutes composite monolithic without other member is directly overlapping up and down, and its inwall is the face of cylinder or circular conical surface.

2. compound drum-shape according to claim 1 is characterized in that: it is the overlapping part place up and down, and the light-emitting area of dioptric element being arranged to upper and lower two lens of corresponding lens focus place light source becomes the common elements of complementation with light-emitting area not.

3. navigation light, have lamp socket, support, two bulbs, flashing control circuit plate, it is characterized in that: also have a compound drum-shape, its structure be two by the superimposed drum lens of forming of a plurality of annular dioptric elements one constitutes composite monolithic without other member is directly up and down overlapping, and its inwall is the face of cylinder or circular conical surface.

4. navigation light according to claim 3 is characterized in that: its compound drum-shape is the overlapping part place up and down, and the light-emitting area of dioptric element being arranged to upper and lower two lens of corresponding lens focus place light source becomes the common elements of complementation with light-emitting area not.

5. according to claim 3 or 4 described navigation lights, it is characterized in that two bulb is mariages or three bulbs.