Background technology
Existing signal lamp, such as ship signal, generally adopt the optical texture of the compositions such as halogen light source, ring screw glass (Fresnel Lenses), light barrier.There is following problem in this type of naval light: 1, halogen light source---and-light efficiency low (whole lamp could meet national standard at more than 60W), shock resistance are poor, and volume is large; 2, ring screw glass----Yi ponding and dust stratification, makes light efficiency reduce rapidly, there is serious potential safety hazard; 3, light barrier----a, different naval lights need different light barriers, add the cost of whole lamp; B, the effect of being in the light due to light barrier, the light efficiency of whole lamp is low; C, unnecessary energy distribute with the form of heat, also bring very large difficulty to heat radiation.Therefore, be necessary to provide a kind of novel ship sailing signal lamp and optical module thereof, make it have light efficiency high, volume is little, and shock resistance is strong, good heat dissipation, low cost and other advantages.
LED (LightEmittingDiode) is all solid state with it, specular removal, and the advantages such as colourity is pure, energy consumption is low, the life-span is long, pollution-free become 21 century competitive new type light source.Along with improving constantly of LED light flux and light efficiency, LED is also more and more extensive in the application of lighting field, but, because LED chip itself belongs to the luminescence of half space lambert type, its luminous intensity both sides (wide-angle) are low, center (low-angle) is high, cannot directly apply to lighting field; Therefore, the secondary optics luminous intensity distribution design of LED light source is seemed particularly important.At present, for the problems referred to above 1, there is the scheme of directly LEDbulb lamp being replaced Halogen lamp LED on the market, but well do not utilize the advantage of LED, cause light efficiency to be wasted larger.The common secondary light-distribution for LED light source is based on lens and reflector, by nonimaging optics design lens or reflector shape, the optical characteristics such as refraction, reflection are utilized to change LED light source light angle, the light that LED light source sends is redistributed, thus obtains the Illumination Distribution of expection.
Conventional LED secondary light-distribution design can be divided into narrow luminous intensity distribution by its angular divisions, middle luminous intensity distribution, wide luminous intensity distribution and extra wide luminous intensity distribution; Can circle be divided into again by its face to be illuminated shape, oval, square, rectangle, polygon etc.But above all LED luminous intensity distribution designs are all only directed to common indoor or outdoor applied environment, can not meet the light distribution requirements of this special dimension of ship sailing signal lamp; Such as, in a standard, as following table 1, list the standard that irradiating angle signal lamp peculiar to vessel being comprised to polytype (range light, Kaji lamp, all-round light, left/right sidelight etc.) etc. is different:
Table 1
And the moulding of corresponding dissimilar traditional lamp is also different, existing mode is one_to_one corresponding die sinking, and cost is higher.
Summary of the invention
The shortcoming of prior art in view of the above, the object of present patent application is the LED providing lens and application thereof, solves LED luminous intensity distribution design in prior art and cannot meet the problem cannot exchanging use between the problem of the requirement of LED signal lamp and signal with different type lamp.
For realizing above-mentioned target and other related objectives, present patent application provides a kind of lens, comprise: lens body, be entity structure, comprise: the exiting surface of convex globoidal shape, the installed surface relative with described exiting surface and the relative end face of at least two of connecting with described exiting surface and installed surface; For covering at the first recess of LED light source, formed from the installed surface indent of described lens body, its inner surface forms the incidence surface corresponding with described exiting surface; Described incidence surface comprises a pair side arranged towards relative two end faces of described lens body and the joint face connecting described a pair side; A pair second recesses, are formed from two end face indents of described lens body, and each described second recess forms reflective surface towards the surface of described LED light source.
Optionally, described joint face protrudes towards described LED light source.
Optionally, described a pair second recesses be symmetrical shape be arranged at described two end faces.
Optionally, described exiting surface be provided with cut a light portion, described section of light portion is positioned at least side of described LED light source, for by the light from described LED light source to lateral refraction.
Optionally, described section of light portion is formed by the prism evagination ground spread configuration that multiple section is triangular in shape.
Optionally, described section of light portion has at least one pair of, and described exiting surface lays respectively at the relative both sides of described LED light source.
Optionally, described lens body stretches out and is formed with protuberance, and described protuberance is provided with the perforation of fixed-purpose.
Optionally, the installed surface of described lens body is provided with location division, locates to obtain for being combined with position to be installed.
For realizing above-mentioned target and other related objectives, present patent application provides a kind of LED, comprises described lens.
Optionally, described LED comprises: top cover, base and the lamp body be located between the two; Described lamp body comprises: diffuser;
Light source installation part, in cylindricality, is located in described diffuser, and be formed with at least one carrying position at the outer surface of its side, wherein, each carrying position is for arranging LED luminescence unit, and at least one in each described carrying position is provided with LED luminescence unit; Described LED luminescence unit, comprising: LED-baseplate, is provided with LED light source, is fixed at described carrying position; Described lens, are fixedly installed on described LED-baseplate and cover at outside described LED light source.
Optionally, described LED, also comprises: lens cover plate, its cover cap in described lens and with described light source installation part secure bond, described lens cover plate has the hole portion of exposing described lens.
Optionally, the both sides at least relatively of described carrying position are respectively equipped with the first holding section, and it is described fixing to realize that described lens cover plate is provided with the second holding section engaged one by one with described first holding section.
Optionally, described lens cover plate cross section is arch.
Optionally, the cross section of described light source installation part is polygon, and every bar limit corresponds to a carrying position.
Optionally, the cross section of described light source installation part is regular polygon.
Optionally, described lens body stretches out and is formed with protuberance, and described protuberance is provided with the perforation of fixed-purpose, and described perforation closes fixture with fixed lens main body in described LED-baseplate for wearing.
Optionally, the installed surface of described lens body is provided with location division, and described location division is corresponding with the position to be installed in described LED-baseplate to be combined.
Optionally, described diffuser is the translucent cover of smooth surface.
As mentioned above, present patent application provides the LED of lens and application thereof, described lens comprise: lens body, for the exiting surface by convex globoidal shape, the installed surface relative with described exiting surface, and the structure that the end face relative with two that described exiting surface and installed surface connect surrounds, the installed surface indent of described lens body forms incidence surface, described incidence surface comprises a pair side arranged towards relative two end faces of described lens body and the joint face connecting described a pair side, the indent of two end faces of described lens body is formed towards the reflective surface of described LED light source, described LED reaches the horizontal and vertical angle difference light distribution effect of nearly 7 times and the advantage of high optical efficiency by these lens of installing, in addition, optical module in described LED can have multiple combination, thus realize meeting the polytype requirement of signal lamp peculiar to vessel respectively.
Accompanying drawing explanation
Fig. 1 is shown as the contour structures schematic diagram of lens in present patent application one embodiment.
Fig. 2 is shown as the structural representation of lens interior perspective in present patent application one embodiment.
The A-A that Fig. 3 is shown as Fig. 1 to generalized section.
The B-B that Fig. 4 is shown as Fig. 1 to generalized section.
Fig. 5 is shown as the light path schematic diagram shown with Fig. 3 angle.
Fig. 6 is shown as the light path schematic diagram shown with Fig. 4 angle.
Fig. 7 is shown as the light path schematic diagram cutting the application of light portion in present patent application one embodiment on lens.
Fig. 8 is shown as the distribution curve flux figure of lens in present patent application one embodiment.
Fig. 9 is shown as the structural representation of LED in present patent application one embodiment.
Figure 10 is shown as the elevational schematic of Fig. 9.
Figure 11 is shown as the decomposing schematic representation of the members of LED in present patent application one embodiment.
Figure 12 a is shown as in present patent application one embodiment the simplification structural representation of a kind of LED luminescence unit combination realizing LED design.
Figure 12 b is Figure 12 a concrete structure schematic diagram in one embodiment.
Figure 12 c is the distribution curve flux figure under Figure 12 a embodiment.
Figure 13 a is shown as in present patent application one embodiment the simplification structural representation of another the LED luminescence unit combination realizing LED design.
Figure 13 b is Figure 13 a concrete structure schematic diagram in one embodiment.
Figure 13 c is the distribution curve flux figure under Figure 13 a embodiment.
Figure 14 a is shown as in present patent application one embodiment the simplification structural representation of another the LED luminescence unit combination realizing LED design.
Figure 14 b is Figure 14 a concrete structure schematic diagram in one embodiment.
Figure 14 c is the distribution curve flux figure under Figure 14 a embodiment.
Element numbers explanation
1 lens
10 installed surfaces
11 exiting surfaces
12 end faces
121 second recesses
1211 reflectings surface
13 protuberances
131 perforation
14 sections of light portions
15 first recesses
151 sides
152 joint faces
2LED light source
3LED lamp
31 top covers
32 lamp bodies
321 diffusers
322 installed parts
3221 carrying positions
3222 first holding sections
323LED luminescence unit
3231LED substrate
3232LED light source
3233 lens
324 lens cover plates
3241 second holding sections
33 bases
34LED driving power
Detailed description of the invention
The embodiment of present patent application is described below by way of specific instantiation, and those skilled in the art the content disclosed by this description can understand other advantages and effect of present patent application easily.Present patent application can also be implemented by detailed description of the invention different in addition or be applied, and the every details in this description also based on different viewpoints and application, can carry out various modification or change under the spirit not deviating from present patent application.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
As shown in Figures 1 to 4, present patent application provides a kind of lens 1, and described lens 1 comprise: lens body and be located at the first recess 15 and the second recess 121 of described lens body.
Described lens body is the entity structure surrounded by the exiting surface 11 of convex globoidal shape, the installed surface 10 relative with described exiting surface 11 and the relative end face 12 of two of connecting with described exiting surface 11 and installed surface 10.In one embodiment, as shown in Figure 2, described lens body can be the part cylindrical or Elliptic Cylinder (such as semicolumn or semiellipse post) etc. of such as rip cutting, and namely described exiting surface 11 can be arcuate arc face, the exiting surface 11 of convex globoidal shape why is adopted to be diffusion in order to LED light, can be shown as the sectional view of Fig. 1 in B-B direction with reference to figure 4 and Fig. 6, Fig. 4 in the lump, Fig. 6 is illustrated in the bright dipping route under the effect of described exiting surface 11 illustratively; Described installed surface 10 is the opposite face of described exiting surface 11, is illustrated as bottom surface, and it is such as plane etc., and described lens body is installed towards LED light source 2 with described installed surface 10.
Again as shown in Figure 2, described first recess 15 is installed surface 10 indent from described lens body and is formed, for covering at outside LED light source 2, the inner surface of described first recess 15 forms the incidence surface corresponding with described exiting surface 11, and described incidence surface comprises a pair side 151 arranged towards relative two end faces 12 of described lens body and the joint face 152 connecting described a pair side 151.In one embodiment, the shape of described first recess 15 can be similar with this lens body, and be part cylindrical or the oblong body of vertical profile, described a pair side 151 is relative with described a pair end face 12 respectively, for both sides bright dipping; And described joint face 152 can be arcwall face, and preferably, from Fig. 2 and Fig. 3, described joint face 152 for protrude to described LED light source 2, thus by from joint face 152 through light become directional light.The light of light source injection upwards obtains narrower irradiating angle at the axis of lens, the emergent ray of similar covering of the fan post obtaining irradiating angle larger on the face of lens radial direction after lens.
Described second recess 121, formed from two end face 12 indents of described lens body, can be whole end face 12 all indent also can be part indent, each described second recess 121 forms reflective surface (being preferably fully reflecting surface 1211) towards the surface of described LED light source 2, described LED light source 2 is at least transmitted to described exiting surface 11 from the bright dipping of described a pair side 151 by the reflection of this reflective surface, preferably, described a pair second recesses 121 be symmetrical shape be arranged at described two end faces 12, the bright dipping that two reflectings surface 1211 are acted on is balanced; Preferably, as shown in Figure 2, the indent summit of these a pair second recesses 121 drops on installed surface 10, and reflecting surface 1211 each several part of described formation can be made all towards exiting surface 11, and not towards installed surface 10.
Concrete, refer to Fig. 5, the bright dipping of LED light source 2 is from described incidence surface, after the material medium refraction of lens 1, some (such as from the bright dipping of the joint face 152 of incidence surface) directly arrives exiting surface 11, another part (such as from the bright dipping of the side 151 of incidence surface) arrives exiting surface 11 after described reflecting surface 1211 reflects, if and the indent summit of described second recess 121 is not dropped on installed surface 10, then described reflecting surface 1211 understands some towards installed surface 10, then light extraction efficiency can be affected, certainly, although it is most preferred embodiment not, but it covered within the protection domain of present patent application equally.
The operation principle of these lens, see Fig. 5 and Fig. 6, in order to express easily, in definition Fig. 5, the direction of vertical paper is longitudinally, and the left and right directions of Fig. 5 is that laterally Fig. 6 is orthogonal profile with Fig. 5, so in Fig. 6, left and right directions is longitudinally, and the direction perpendicular to paper is laterally.Shown index path is visible in Figure 5, the light that LED light source 2 sends, a part arrives exiting surface 11 by forming directional light after joint face 152, another part forms directional light and reaches exiting surface 11 (ideally directional light is absolute parallel after the refraction of the side 151 of incidence surface and the reflection of reflecting surface 1211, but might not be absolute parallel in actual production or design), due to the restriction of reflecting surface 1211 pairs of horizontal bright dippings of LED light source 2, the angle of light in horizontal transmission diminishes, in addition on the one hand, index path is known as illustrated in figure 6, on longitudinal cross-section, after the refraction of incidence surface and exiting surface 11, longitudinal propagation upper angle becomes large (namely to external diffusion).Thus, the half space lambert type luminescence of LED light source 2 originally, by the luminous intensity distribution of these lens, reaches luminous intensity distribution object respectively horizontal and vertical, and light intensity change is more even.
Summary is got up, these lens 1 are controlled respectively by the light horizontal and vertical to light source, the last light distribution effect that can form nearly 7 times of horizontal and vertical angle difference, and meet the requirement of ship sailing signal lamp, and its optical efficiency is up to more than 88%, refer to Fig. 8, displaying be curve map by this lens 1 luminous intensity distribution.
Preferred but be nonessentially in addition, as shown in Figure 1, described exiting surface 11 is provided with and cuts light portion 14, described section of light portion 14 is positioned at least side (being preferably both sides as shown in the figure) of described LED light source 2, preferably, described section of light portion 14 has at least one pair of, and described exiting surface 11 lays respectively at described LED light source 2 both sides relatively; Concrete, described section of light portion 14 is formed by the prism evagination ground spread configuration that multiple section is triangular in shape, and refer to Fig. 7, therefrom visible, each prism in described section of light portion 14 by the light from described LED light source 2 to lateral refraction, thus avoid middle main light emitting, realize traffic lights especially ship sailing signal lamp cut photosensitiveness requirement.
Referring again to Fig. 1 and Fig. 4, in one embodiment, described lens body extension is formed with protuberance 13, preferably protrude formation from the joint of exiting surface 11 and installed surface 10, described protuberance 13 is provided with the perforation 131 of fixed-purpose, is fixed on position to be installed for combining the such as fixture such as rivet, screw; Certainly not as limit, the installed surface 10 of such as described lens body can arrange location division, locate to obtain for being combined with position to be installed, described combination comprises: male-female engagement, buckle combination etc., such as, described location division is one or more projection, and described position to be installed is provided with quantity one to one and the recess of form fit, and both combine with positioning lens main body.
As shown in Figure 9, present patent application provides a kind of LED 3, can lens in application of aforementioned embodiment and for luminous intensity distribution, according to the description of previous embodiment, adopt the LED 3 of these lens well to meet the requirement of such as navigation light, ship sailing signal lamp and to have high optical efficiency; Concrete, described LED 3 comprises: top cover 1, base 33 and the lamp body 32 be located between the two.
Refer to shown in Figure 10 and Figure 11, in one embodiment, described lamp body 32 comprises: diffuser 321, installed part 322 and LED luminescence unit 323.
Described diffuser 321 can cylindrical body such as penetrating, preferably identical with described lamp body 32 shape, is such as namely cylindrical shape, makes the uniform in light emission of side direction.In one embodiment, described diffuser 321 is preferably the translucent cover of smooth surface, can be the such as transparent material such as glass or PC, the light that it can make lens 3233 send be gone out with the efficiency transmission of more than 94%, and does not have the light decay problem caused by ponding and dust stratification due to its smooth surface.
Described light source installation part 322, in cylindricality, is located in described diffuser 321, at least one carrying position 3221 is formed at the outer surface of its side, wherein, each carrying position 3221 is for arranging LED luminescence unit 323, and at least one in each described carrying position 3221 is provided with LED luminescence unit 323.In one embodiment, described LED luminescence unit 323, comprising: the LED-baseplate 3231 (can be aluminium base) being provided with LED light source 3232 (as light source chip), and it is fixed at described carrying position 3221; Also comprise: lens 3233 as described above, be fixedly installed on described LED-baseplate 3231 and cover at outside described LED light source 3232.
Preferably, penetrate in the middle part of described light source installation part 322 and form breakthrough portion, can for wearing LED drive power 34, preferably, described breakthrough portion and LED drive power 34 are that form fit or breakthrough portion inwall are provided with (not shown) such as the parts of location LED drive power 34, thus location penetrates LED drive power 34 movement diametrically of breakthrough portion, for another example shown in Figure 11 or Figure 12 b, described breakthrough portion cross section is polygon, namely so-called polygon has the shape on more than three limits, and every bar limit corresponds to a carrying position 3221, according to luminous intensity distribution demands such as concrete light fixture irradiating angles, polygonal limit number is set, in the present embodiment, described cross section is triangle, namely there are three carrying positions 3221, certainly in other embodiments, not as limit, preferably, this polygon can be regular polygon, be preferably equilateral triangle in the present embodiment, because LED luminescence unit 323 is located on the carrying position 3221 of light source installation part 322 side, therefore the uniform in light emission that can make all directions is set by regular polygon, and, as shown in Figure 10, the recess that described top cover 131 and the interior shape of cross section that can be provided with the corresponding described LED drive power 34 of shape and light source installation part 322 of base 33 match, thus and the combination of this recess can locate this light source installation part 322 between top cover 131 and base 33, in like manner, top cover 131 and base 33 preferably also can arrange the recess of diffuser 321 cross section described in form fit, also can locate this diffuser 321.
As shown in figure 11, described LED 3, also comprise: lens cover plate 324, its cover cap in described lens 3233 and with described light source installation part 322 secure bond, described lens cover plate 324 has the hole portion (such as illustrated square hole) of exposing described lens 3233, concrete, Figure 12 b can be consulted, the both sides at least relatively of described carrying position 3221 are respectively equipped with the first holding section 3222, it is described fixing to realize that described lens cover plate 324 is provided with the second holding section 3241 engaged one by one with described first holding section 3222, described first holding section 3222 and the second holding section 3241 can be kink that bending direction is contrary and relatively to engage, as shown in the figure, described first holding section 3222 is for raising up from carrying position 3221 for a pair and the structure that formed of (figure for outwards) bending round about, and described second holding section 3241 is the 324 liang of equidirectional bendings of side direction of described lens cover plate but the flanging contrary with the overbending direction of described first holding section 3222, make described lens cover plate 324 can be fixed on described carrying position 3221 by engaging.
In one embodiment, as seen from the figure, preferably, described lens cover plate 324 cross section is arch, thus neither hinders the main light emitting of lens 3233, can limit again the veiling glare at lens 3233 edge to the impact of main light emitting.
In one embodiment, described in brought forward, described lens body stretches out from the joint of exiting surface 11 and installed surface 10 and is formed with protuberance 13, described protuberance 13 is provided with the perforation 131 of fixed-purpose, described perforation 131 closes the such as fixture such as rivet, screw with fixing described lens body in described LED-baseplate 3231 for wearing, or, in another embodiment, the installed surface 10 of described lens body is provided with location division, described location division is corresponding with the position to be installed in described LED-baseplate 3231 to be combined, described engaging such as: male-female engagement or buckle combination etc.
Refer to Figure 12 a ~ 14c, show and come correspondingly to realize different types of signal lamp by the installation of different LED luminescence units 323 (namely LED light source 3232 adds lens 3233) combination:
Such as, Figure 12 a show be simplify after principle assumption diagram, only LED luminescence unit 323 is set in carrying position, side 3221 or only makes the LED luminescence unit 323 of carrying position, side 3221 luminous, thus realize the design of the signal lamp (as left/right sidelight etc.) of one-sided smaller angle in such as boat signal lamp (60 ° ~ 120 °) luminous demand.
Such as Figure 13 a again, LED luminescence unit 323 is set in carrying position, both sides 3221 or only makes the LED luminescence unit 323 of carrying position, both sides 3221 luminous, thus realize the design of the signal lamp (such as range light, Kaji lamp, towing lantern etc.) of one-sided smaller angle in such as boat signal lamp (120 ° ~ 240 °) luminous demand.
Such as Figure 14 a again, all arranges LED luminescence unit 323 in three carrying positions, side 3221 or makes the light source of three carrying positions, side 3221 all luminous, thus realizes the design of all-round light in wide-angle (240 ° ~ 360 °) such as boat signal lamp.
Visible, utilize the LED that present patent application provides, following functions can also be realized: when changing without the need to carrying out any other lamp main body structure, by installation quantity and the position of adjustment LED luminescence, dissimilar signal lamp demand can be realized, the applicability of product can be increased and greatly reduce die sinking cost.
It should be noted that, although the signal lamp for boats and ships boat shown in above-described embodiment, in other embodiments, LED provided by the present invention also can be used as such as beacon sign lamp or aerospace signal lamp etc.
In sum, present patent application provides the LED of lens and application thereof, described lens comprise: lens body, for the exiting surface by convex globoidal shape, the installed surface relative with described exiting surface, and the structure that the end face relative with two that described exiting surface and installed surface connect surrounds, the installed surface indent of described lens body forms incidence surface, described incidence surface comprises a pair side arranged towards relative two end faces of described lens body and the joint face connecting described a pair side, the indent of two end faces of described lens body is formed towards the reflective surface of described LED light source, described LED reaches the horizontal and vertical angle difference light distribution effect of nearly 7 times and the advantage of high optical efficiency by these lens of installing, in addition, optical module in described LED can have multiple combination, thus realize meeting the polytype requirement of signal lamp peculiar to vessel respectively.
Above-described embodiment is the principle of illustrative present patent application and effect thereof only, but not for limiting present patent application.Any person skilled in the art scholar all under the spirit and category of present patent application, can modify above-described embodiment or changes.Therefore, such as have in art and usually know that the knowledgeable modifies or changes not departing from all equivalences completed under the spirit and technological thought that present patent application discloses, must be contained by the claim of present patent application.