WO2014015825A1 - Led信号灯 - Google Patents

Led信号灯 Download PDF

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Publication number
WO2014015825A1
WO2014015825A1 PCT/CN2013/080162 CN2013080162W WO2014015825A1 WO 2014015825 A1 WO2014015825 A1 WO 2014015825A1 CN 2013080162 W CN2013080162 W CN 2013080162W WO 2014015825 A1 WO2014015825 A1 WO 2014015825A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
led
white
signal lamp
led signal
Prior art date
Application number
PCT/CN2013/080162
Other languages
English (en)
French (fr)
Inventor
张文虎
Original Assignee
Zhang Wenhu
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201210264965.2A external-priority patent/CN102767726B/zh
Priority claimed from CN2012203702159U external-priority patent/CN202972593U/zh
Application filed by Zhang Wenhu filed Critical Zhang Wenhu
Priority to EP13823010.7A priority Critical patent/EP2878878A4/en
Priority to AU2013295901A priority patent/AU2013295901A1/en
Priority to US14/365,994 priority patent/US20140369060A1/en
Priority to JP2015523404A priority patent/JP2015522935A/ja
Publication of WO2014015825A1 publication Critical patent/WO2014015825A1/zh
Priority to AU2017232078A priority patent/AU2017232078A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/08—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for producing coloured light, e.g. monochromatic; for reducing intensity of light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • F21V5/045—Refractors for light sources of lens shape the lens having discontinuous faces, e.g. Fresnel lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
    • F21Y2107/30—Light sources with three-dimensionally disposed light-generating elements on the outer surface of cylindrical surfaces, e.g. rod-shaped supports having a circular or a polygonal cross section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the invention relates to a signal lamp, in particular to a signal lamp using a white light LED as a light source. Background technique
  • Warning lights such as warning lights, beacon lights, etc. usually use colored light to give warning and reminders. For example, police or firefighters usually use red and blue alternate lights or red light warning lights, yellow warning lights for construction accidents, and blue warning lights for ambulances.
  • the warning light also provides a flash, which can be realized by a small motor driving the half-shade to continuously rotate to give a flashing pattern or a flash circuit in the chip.
  • LEDs have become a new type of light source after incandescent lamps, fluorescent lamps and gas discharge lamps. They have many advantages that other illumination sources do not have, such as low voltage, long life, small size, light weight, fast response, no radiation, no Pollution and resistance to various harsh conditions. Therefore, the signal light with LED as the light source is a new trend.
  • the signal light generally uses colored light to distinguish and play a vigilant role.
  • a conventional LED signal lamp can use a red chip, a blue chip, and a yellow chip packaged in a transparent lamp cover to generate corresponding red, blue, and yellow light.
  • the existing research direction is mainly focused on white LEDs, it is rare to study these red chips, blue chips and yellow chips separately. That is to say, the effective luminous flux of white LEDs can now reach a higher value and is constantly improving, but the effective luminous flux of these colored LED chips is still maintained at a low value, thereby providing colored light by installing colored LED chips. The efficiency is relatively low.
  • the existing research mainly focuses on improving the luminous flux of the LED chip light source, and it is rare to improve the overall physical structure of the LED luminaire to reduce the light loss. That is to say, the existing research rarely reduces the structure of the LED luminaire to reduce it. Illumination blind zone, and achieve concentrating effect, thereby improving the luminous efficiency of the LED lamp.
  • a main object of the present invention is to provide an LED signal lamp having a white LED illuminant as a light source, and a filter disposed on a light path of the white LED illuminant source, the filter to the white LED At least a portion of the light from the illuminator is filtered into non-white light to form a non-white light signal using the white LED illuminator.
  • Another object of the present invention is to provide an LED signal lamp comprising a plurality of columns of the white LED illuminators sequentially arranged end to end and the corresponding plurality of columns of the filters, thereby causing the plurality of columns of white LEDs to emit light
  • the body provides uniform annular light.
  • Another object of the present invention is to provide an LED signal lamp, which is located in front of the white LED illuminator and has a condensing effect on the white LED illuminator, thereby generating a condensing effect.
  • the filter is also a filter to function to filter white light emitted by the white LED illuminator into color signal light. That is, the filter of the LED signal lamp of the present invention can serve two purposes, concentrating and color filtering.
  • Another object of the present invention is to provide an LED signal lamp, which is provided with a filter and a reflective surface for each of the white LED illuminators to converge the light emitted by the LED illuminator, thereby using Color LED illuminator, enhanced light intensity.
  • Another object of the present invention is to provide an LED signal lamp.
  • the signal lamp uses a color LED chip as a light source.
  • a transparent cover is used, and the LED signal lamp of the present invention can be directly used.
  • a cover of a desired color that is, a color cover can be used, so that light emitted from the white LED illuminator penetrates the color light distributor to form a relatively high-purity color light, and the color light cover itself can be decorated or The role of warnings.
  • Another object of the present invention is to provide an LED signal lamp, which is a light source, such as a yellow LED, which is attenuated by about 50% within 30 minutes, compared to the prior art using a color light LED illuminator as a light source, and the LED signal lamp of the present invention
  • the white LED illuminant is used as the light source, and the white LED has substantially no attenuation of the luminescence under normal use conditions, so that the LED signal lamp of the present invention can obtain a relatively high light intensity.
  • Another object of the present invention is to provide an LED signal lamp, the LED light source adopting white light
  • the LED illuminator is packaged with a colored transparent package, such that the light emitted by the white LED illuminator is filtered to form colored light, and the specially treated white LED illuminant is used as a light source to form the LED required by the present invention. Signal light.
  • Another object of the present invention is to provide an LED signal lamp, which uses the white LED illuminator instead of a color light LED illuminant such as a red LED illuminator, a blue LED illuminator, and a yellow LED illuminator.
  • the body is simple in structure, easy to manufacture, and low in cost.
  • an LED signal lamp comprising:
  • At least one white LED illuminator At least one white LED illuminator
  • At least one filter wherein the at least one filter is respectively disposed on a light path of the at least one white LED illuminator to filter at least a portion of the light emitted by the white LED illuminator into a predetermined color of non-white light Light.
  • the filter is located at a position on the light path of the corresponding white LED illuminator having a concentrating effect, thereby simultaneously concentrating and allowing the predetermined color of light to pass through. The role.
  • the filter comprises a lens having a collecting effect, preferably the lens is a convex lens or a Fresnel lens having filter properties.
  • the LED signal light further includes at least one reflective surface, and the emitted light from the corresponding white LED illuminator reaches the reflective surface and is reflected and projected in the same direction, thereby concentrating The role of light.
  • the light reflected by the reflective surface is projected in the same direction as the filtered light of the filter.
  • the reflective surface is the inner surface of a retroreflective device.
  • each of the white LED illuminators further includes a heat dissipating device, the heat dissipating device includes a heat dissipating circuit board and a heat sink connected to the heat dissipating circuit board, and the white LED illuminator is connected to the heat dissipating body circuit board.
  • each of the white LED illuminators is further provided with a heat dissipating device, and the reflecting surface may be an inner surface of the heat dissipating device or an inner surface of a separately disposed reflecting component.
  • the LED signal light further includes a housing, the housing including a light distributor, the light distributor only allowing light of the predetermined color to pass therethrough.
  • the light distributor further functions to distribute the direction in which the light is projected.
  • each of the filters is mounted in position by at least one mounting member and a corresponding one of the heat dissipation circuit boards or the optical distributor.
  • the at least one white LED illuminator is arranged to provide an annular range of light at an angle of 360°.
  • the at least one white LED illuminator is arranged to include a plurality of columns of the white light LED illuminator, each column of the white LED illuminator comprises one or more of the white LED illuminators, and a plurality of rows of the white LED illuminators intersect to form a polygonal shape to illuminate the white LED
  • the body provides circular signal light.
  • a plurality of lines of the white LED illuminators intersect to form a shape of a regular polygon selected from the group consisting of: an equilateral triangle, a regular quadrangle, a regular hexagon, a regular octagon, and a regular dodecagonal or other regular polygon.
  • a regular polygon selected from the group consisting of: an equilateral triangle, a regular quadrangle, a regular hexagon, a regular octagon, and a regular dodecagonal or other regular polygon.
  • the predetermined color is selected from one of red, blue, yellow, green, and purple.
  • the LED signal light is selected from the group consisting of a police light, a navigation light, an aviation obstacle light, and a ship navigation light.
  • the LED signal lamp includes a plurality of the white LED illuminants, and the plurality of white LED illuminators are arranged in a plurality of columns of white LED illuminators, and the lines of the plurality of columns of white LED illuminators intersect Arranged into polygons, each column of white LED illuminators comprising one or more of said white lights
  • the LED signal light further includes a control module to selectively turn the multi-column white LED illuminator on or off such that the signal light of the LED signal light assumes a predetermined pattern.
  • control module sequentially opens the plurality of columns of white light clockwise or counterclockwise
  • LED illuminator to provide a horse-drawn rotary flashing effect.
  • control module causes at least one of the plurality of columns of white LED illuminators to be in an open state, so that the signal light generated by the LED signal is kept continuous.
  • control module selectively provides signal light illumination of the range of 30°, 45°, 60°, 90°, 120° or 180° angles of the plurality of columns of white LED illuminators.
  • an LED signal lamp including:
  • At least one LED illuminator At least one LED illuminator
  • the at least one optical processor is respectively disposed on a light path of the at least one LED illuminator to radially converge at least a portion of the ray emitted by the LED illuminator and project it.
  • the LED signal light further includes at least one reflective surface, the at least one The LED illuminators are respectively disposed in the accommodating cavity formed by the reflective surface, the reflective surface is configured to reflect a portion of the light emitted by the LED illuminator, and the partially reflected light is filtered by the optical processor. Light is projected in the same direction.
  • the LED illuminator is a white LED illuminator
  • the photo processor further has a filtering effect to at least partially white light emitted by the white LED illuminator passing through the photo processor. The light is filtered into a monochromatic light of a predetermined color.
  • the optical processor is a Fresnel lens or a convex lens having a filtering property, and the Fresnel lens or the convex lens is disposed at a position having a collecting effect, so that the light processing
  • the device functions as a filter and a concentrating light.
  • the optical processor is a Fresnel lens or a convex lens having a condensing effect
  • the LED illuminator is selected from the group consisting of a white LED illuminator, a yellow LED illuminator, a red LED illuminator, and a blue light.
  • a white LED illuminator a yellow LED illuminator
  • a red LED illuminator a blue light.
  • the plurality of white LED illuminators are arranged in a plurality of columns of white LED illuminators, and the lines in which the plurality of columns of white LED illuminators are located intersect to be arranged in a polygonal shape to provide annular light.
  • each column of white LED illuminators comprises one or more of said white LED illuminators, and the lines of said plurality of columns of white LED illuminators intersect to form a regular polygon.
  • the predetermined color is red, blue, yellow, green, or purple.
  • the reflective surface is a paraboloid of a retroreflective device or an inner surface of a heat dissipating device.
  • the LED signal light further includes a housing, the housing including an optical splitter, the optical splitter being an outer lens to allow only light of the predetermined color to pass therethrough.
  • the LED signal lamp uses a color LED lamp bead processed by special packaging.
  • the invention also provides an LED signal lamp, comprising: a color LED lamp bead as a light source, the color LED lamp bead comprising at least one white LED illumination And the white LED illuminator generates colored light of a predetermined color after being packaged into the LED lamp bead, thereby providing color light required by the LED signal lamp.
  • each of the white LED illuminators is provided with a transparent package, and the transparent package is a colored transparent package, which is sent by the white LED illuminator in each corresponding colored transparent package.
  • the white light is filtered into the colored light of the predetermined color.
  • the LED signal light further includes at least one concentrator and a reflective device Positioning, the concentrator is disposed at a suitable position of a light path of the LED chip, and the concentrator has a concentrating effect, and the light emitted by the LED lamp bead is reflected by the reflective device The light is projected in the same direction as the light concentrated by the concentrator, thereby functioning to converge light.
  • Figure 1 is an exploded perspective view of an LED signal lamp in accordance with a preferred embodiment of the present invention.
  • Fig. 2 is a view showing the configuration of an outline of an LED signal lamp according to the above preferred embodiment of the present invention.
  • Figure 3 is a cross-sectional view of an LED signal lamp in accordance with the above preferred embodiment of the present invention.
  • Fig. 4 is a view showing the internal structure of an LED signal lamp in accordance with the above preferred embodiment of the present invention.
  • Figure 5 is a cross-sectional view of an LED signal lamp according to the above preferred embodiment of the present invention, showing white light
  • the light emitted by the LED illuminator is concentrated by the filter and filtered into the desired color.
  • Figure 6A is a partial enlarged cross-sectional view of an LED signal lamp in accordance with another preferred embodiment of the present invention.
  • Figure 6B is a partial enlarged cross-sectional view of an LED signal lamp in accordance with another preferred embodiment of the present invention.
  • Figure 7 is an exploded perspective view of an LED signal lamp in accordance with a third preferred embodiment of the present invention.
  • Fig. 8 is a view showing the configuration of the outline of an LED signal lamp according to the above preferred embodiment of the present invention.
  • Figure 9 is a cross-sectional view of an LED signal lamp in accordance with the above preferred embodiment of the present invention.
  • Figure 10 is a block diagram showing the internal structure of an LED signal lamp in accordance with the above preferred embodiment of the present invention.
  • Figure 11 is a cross-sectional view of an LED signal lamp in accordance with the above-described preferred embodiment of the present invention, showing that light emitted from the white LED illuminator is concentrated by the optical processor and filtered to a desired color.
  • Figure 12 is a block diagram showing the structure of an LED signal lamp in accordance with a fourth preferred embodiment of the present invention.
  • Fig. 13 is a view showing the configuration of an LED signal lamp according to a modified embodiment of the fourth preferred embodiment of the present invention.
  • Figure 14 is a schematic view showing the structure of an LED signal lamp in accordance with a fifth preferred embodiment of the present invention.
  • Figure 15 is a schematic view showing the internal structure of an LED signal lamp according to the above fifth preferred embodiment of the present invention.
  • FIG 16 is a schematic view showing the structure of an LED lamp bead of an LED signal lamp according to the above fifth preferred embodiment of the present invention. detailed description
  • the LED signal light can be a warning light comprising a plurality of light sources, and a corresponding plurality of filters 20 disposed on the plurality of light source paths.
  • the plurality of light sources are a plurality of white LED illuminants 10.
  • the plurality of white LED illuminators 10 are commercially available, and may be, for example, commercially available single-chip or multi-chip white LED illuminators.
  • the plurality of filters 20 are respectively located on the light path of the plurality of white LED illuminators 10, for example, the plurality of filters 20 are respectively located on one side of the plurality of white LED illuminators 10, At least part of the white light emitted by each of the white LED illuminators 10 is filtered into non-white light to obtain a non-white light signal lamp. In this embodiment, a non-white light warning light is obtained.
  • the plurality of filters 20 may respectively filter at least part of the white light emitted by the plurality of white LED illuminators 10 into monochromatic lights such as red light, blue light, green light, yellow light, and violet light, thereby respectively Obtaining a red, blue, green, yellow, and violet signal light.
  • the plurality of filters 20 can respectively filter at least part of the white light emitted by the plurality of white LED illuminators 10 into Red or yellow light, which can provide red or yellow warning lights.
  • the essential meaning of the present invention is that the color signal lamp obtains color signal light by filtering the light emitted by the plurality of white LED illuminants 10, and the light source of the high quality white LED is easily available in the existing market, and is relatively easy to use.
  • the color LED illuminator serves as a light source, and the LED signal lamp of the present invention is easier to obtain a higher light intensity and is less expensive.
  • a higher luminous flux such as a white light LED source of 150 lumens per watt (lm) is already readily available on the market, and the intensity of the resulting colored light is filtered after being filtered by the filter 20 into colored light. It is still higher than the achieved light intensity of the obtained color light obtained by using the color light LED chip alone.
  • the yellow warning light in this embodiment after filtering through the filter 20 into yellow light, still has about 60% remaining, and still has about 90 lumens per watt of yellow light, which is still better than the market.
  • the luminous flux (50 to 60 lumens) of the yellow light obtained by using the yellow LED illuminant as a light source is high.
  • filtering in the present invention means that after the light emitted by the plurality of white LED illuminators 10 passes through the corresponding plurality of filters 20, only monochromatic light of a predetermined color of non-white light is obtained.
  • the predetermined color may be red, blue, green, yellow, or the like as described above.
  • the white LED illuminator 10 on the market can already achieve a high luminous flux, and the research on the white LED illuminator 10 is still in progress, the luminous flux of the white LED illuminant 10 as a light source can continue. Improvements, but less research on the color LED illuminator 10, its luminous flux is still at a lower value.
  • the white light LED illuminator is used as the light source to obtain colored light.
  • the signal light, high-light flux white LED illuminator can be purchased directly from the market, so the production process is relatively simple.
  • the LED signal lamp of the present invention comprises at least two columns of the white LED illuminators 10, for example, as an example, the LED signal lamp comprises three columns, four columns, six columns, eight columns, or twelve columns, etc.
  • the plurality of columns of white LED illuminators 10 are sequentially arranged such that the lines in which the plurality of columns of white LED illuminators 10 are located intersect to form an equilateral triangle, a regular quadrangle, a regular hexagon, a regular octagon, a regular dodecagonal Or other regular polygons.
  • the multi-row white LED illuminators 10 may not be arranged in a regular polygon to meet the needs of the illuminating characteristic signal lamps in the non-circular sector.
  • Each of the columns may also be provided with a different number of the white LED illuminators 10 than the other columns.
  • the present invention is not limited in this respect, and may be set according to specific needs in practical applications.
  • the signal lamp of the present invention may be an annular LED signal lamp, and "ringing" herein means that the white LED illuminators 10 are arranged to provide light projected circumferentially, and of course, preferably, the white LED illuminators 10 are arranged to provide Projected light in a 360° angular range along the circumferential direction.
  • one of the plurality of columns of the white LED illuminators 10 or the column of the white LED illuminators 10 is removed, so that it can be in a certain direction or several according to needs. No light is provided in one direction. That is to say, the LED signal light of the present invention can also provide a fan-shaped or semi-circular range of illumination as needed, for example, a light range of 180° or 270°.
  • the corresponding filters 20 of the white LED illuminators 10 can filter the light of the white LED illuminators 10 into different colors. For example, three rows of the white LED illuminators 10 in the six columns of the white LED illuminators 10 are correspondingly provided with red light filters 20, and the remaining three columns of the white LED illuminants 10 are correspondingly provided with blue light filters. 20, the LED signal lamp further includes a controller 11 which can selectively open six rows of the white LED illuminators 10 by opening and closing of the control circuit, thereby respectively providing red or blue light, or Alternating red and blue light. At this time, the cover of the LED signal light can be transparent.
  • the warning light includes six columns of the white LED illuminators 10, and each column of the white LED illuminators 10 includes three of the white LED illuminators 10, each The light path of the white LED illuminator 10 is provided with one of the filters 20 to filter at least part of the white light emitted by the white LED illuminators 10 into yellow light, thereby providing a yellow warning light. .
  • the controller 11 can control the illumination of the white LED illuminants 10 or stop the illumination, or at a predetermined time interval, the white LED illuminators 10 can be illuminated. This results in a yellow flash mode that provides a stronger visual impact and thus provides a more alerting effect.
  • the plurality of filters 20 are located at appropriate positions of the plurality of white LED illuminators 10.
  • the plurality of filters 20 are also subtly designed to have concentrating effect. That is, each of the filters 20 can radially converge the white light emitted by the corresponding white LED illuminator 10 and filter it into non-white light before projecting.
  • the filter 20 not only functions to filter colors but also functions as a condensing light in the present invention. It is worth mentioning that after concentrating, the effective luminous flux projected into the appropriate area is improved, thereby enhancing the luminous intensity of the signal lamp.
  • the filter 20 may be various lenses for concentrating, such as convex lenses.
  • each of the filters 20 is a Fresnel lens having filter performance, and thus, each of the The light emitted by the white LED illuminator 10 is radially concentrated by the Fresnel lens, and is filtered into predetermined non-white light and then projected in mutually parallel directions, thereby improving the illumination efficiency, and the illumination reaching the predetermined area is high.
  • Luminous flux is a Fresnel lens having filter performance, and thus, each of the The light emitted by the white LED illuminator 10 is radially concentrated by the Fresnel lens, and is filtered into predetermined non-white light and then projected in mutually parallel directions, thereby improving the illumination efficiency, and the illumination reaching the predetermined area is high. Luminous flux.
  • both the filtering and concentrating properties are integrated on the filter 20, rather than separately providing the structure of the filter and the concentrating lens. This reduces parts and simplifies the structure. Moreover, if two separate components are used, the light needs to penetrate the two components, the path becomes long, and it is necessary to pass through a plurality of interfaces, causing part of the light to be reflected, which inevitably causes loss of light intensity.
  • Each of the filters 20 is located at a suitable position in front of the corresponding white LED illuminator 10, and its size and size can be set as needed to achieve maximum concentrating effect, and clear spots can be removed.
  • each of the filters 20 is further provided with at least one mounting member 21 such that each of the filters 20 is mounted by the at least one mounting member 21 corresponding to the At a suitable position on the light path of the white LED illuminant 10, for example, each of the filters 20 is fixed to the corresponding mounting member 21 by a wire.
  • the LED signal light is also A plurality of heat dissipating devices 12 are included, and the at least one mounting member 21 is disposed between the corresponding heat dissipating device 12 and the optical filter 20 to connect the heat dissipating device 12 and the optical filter 20 to each other.
  • the heat sink 12 includes a metal heat sink circuit board 121 and a heat sink 122 connected to the heat dissipation circuit board 121.
  • the heat dissipation circuit board 121 and the heat sink 122 may be made of a metal material.
  • each of the white LED illuminators 10 is disposed on the corresponding heat dissipation circuit board 121.
  • each of the white LED illuminators 10 is disposed in a accommodating cavity 31 defined by a reflective surface 30, the reflective surface 30 and the filter 20, ie
  • the light emitted by the white LED illuminator 10 can be concentrated together with the filter 20.
  • the reflective surface 30 may be a straight paraboloid, and the light reflected by the reflective surface 30 and the light passing through the filter 20 are converged to be projected substantially parallel to each other, as shown in FIG.
  • a gap may be left between the filter 20 and the reflective surface 30 to allow another portion of the light to pass through the gap to the reflective surface 30 and be reflected outward without being affected by the filter 20. .
  • the reflective surface 30 can be an inner surface of a reflective device having a reflective effect. As shown in FIG. 3, the reflective surface 30 is a parabolic curved surface, and the shape can be designed to be optimized according to requirements. Filter 20 (Fresnel lens) achieves maximum concentrating effect.
  • the reflective surface 30 can also only function as a reflection, and does not need to function as a concentrated light.
  • the filter 20 (Fresnel lens) and is then used by the filter 20 (Fresnel lens). Converging and filtering into colored monochromatic light, as shown in the figure, between the S1 region between the filter 20 (Fresnel lens) and the white LED illuminator, is illuminated from the white LED The body emits white light diverging along the radial direction. In the S2 region after passing through the filter 20 (Fresnel lens), the white light diverging along the radial direction is concentrated into mutually parallel light and filtered. Into non-white colored light.
  • the LED signal lamp further comprises a housing 40, the housing 40 comprising a light distributor 41, the light distributor 41 to the white LED All of the light emitted by the illuminator 10 is filtered into light of a desired color. That is, a portion of the light passing through the gap between the filter 20 and the reflective surface 30 is reflected on the reflective surface 30, and is also filtered through the optical distributor 41.
  • White light That is to say, the filter 20 and the optical splitter The white light emitted from the corresponding white LED illuminator 10 can be filtered into the same non-white light.
  • the optical distributor 41 not only functions as a filter but also has an effect of optimally distributing the output light, which directs the light emitted by the white LED illuminator 10 to a more uniform region.
  • the light that reaches the S3 region that is, the light reflected by the reflective surface 30, is also preferably projected in the same direction as the light passing through the filter 20, so that the light intensity reaching the illumination region is enhanced. And the light reflected by the reflecting surface 30 passes through the light distributor 41 to form light of a desired color.
  • the light distributor 41 is a yellow lens, and light emitted from the white LED illuminator 10 does not reach the filter 20 but is reflected on the reflective surface 30. Part of the light is also filtered by the yellow lens, which filters most of the white light emitted by the white LED illuminator 10 into yellow light to provide a yellow warning light.
  • the warning light can directly use the yellow light distributor.
  • the yellow light LED illuminator is used as the light source, and the colorless transparent cover is the outer cover warning light.
  • the warning light of the present invention is in appearance. It also has a more traditional functional color, which can give people a warning effect. It is worth mentioning that the optical distributor 41 can be directly used as a cover for the LED signal light.
  • the housing 40 further includes a base 42, the light distributor 41 and the base 42 form a cavity, and the plurality of white LED light emitters 10 A plurality of filters 20 and the like are disposed in the cavity.
  • the top of the housing 40 may also include a trim cover 43 to provide other decorative effects to the LED signal light as well as enhance aesthetics.
  • the housing 40 also includes the necessary wires 44 that are electrically coupled to the controller 11 to provide power to the controller 11 to operate the LEDs.
  • the wire 44 passes through the sealing plate 45 and is fixed by a sealant 46.
  • the light distributor 41 and the base 42 are seamlessly and tightly connected by a sealing ring 47.
  • the LED signal lamp in this embodiment has a similar structure to the LED signal lamp in the above embodiment.
  • the reflective surface 30A is the inner surface of the heat sink 12A, that is, the inner surface of the heat sink 12A has a reflective effect, and thus the Fresnel lens as the filter 20A.
  • the function of collecting light is performed, so that the light projected by the corresponding white LED illuminator is relatively straight, and a filter cover 50A is connected to the reflective surface 30A for allowing light of a predetermined color to pass through. That is, the filter cover 50A which functions the same as the optical distributor 41 of the above embodiment directly abuts the reflecting surface 30A to form a closed accommodating chamber 31A.
  • the present invention provides an LED signal lamp, which is equivalent to including one or more lighting units, each
  • the light-emitting units include a white LED illuminator 10, a filter 20, and a reflective surface 30.
  • the white LED illuminator 10 emits white light, passes through the color filtering of the filter 20, and the concentrating effect of the filter 20 and the reflecting surface 30 can be additionally provided, thereby obtaining color signal light with improved illumination efficiency.
  • These light-emitting units are suitably arranged to provide colored light that is projected in the circumferential direction to provide circular signal light.
  • the present invention substantially provides a method of forming an LED signal lamp, the method comprising the steps of:
  • the step (a) may further include the step (al): arranging a plurality of the white LED illuminants 10 into a plurality of columns of white LED illuminators 10, wherein the lines of the plurality of columns of white LED illuminators 10 intersect to form a polygon Thus, it is possible to provide an annular light.
  • each column of white LED illuminators 10 includes one or more of said white LED illuminators 10.
  • the straight lines of the plurality of columns of white LED illuminants 10 intersect to form a regular polygon, such as an equilateral triangle, a regular quadrangle, a regular hexagon, a regular octagon, or a regular dodecagon.
  • a regular polygon such as an equilateral triangle, a regular quadrangle, a regular hexagon, a regular octagon, or a regular dodecagon.
  • the step (b) includes the step (bl): a filter 20 is disposed on the light path of each of the white LED illuminators, and the filter 20 will pass the white of the filter 20 The light is filtered into a monochromatic light of a predetermined color.
  • the filter 20 may be a Fresnel lens having filter performance, and the Fresnel lens is disposed at a position where light can be collected, so that the filter 20 can To the role of filtering and concentrating.
  • the predetermined color is red, blue, yellow, green, purple, or the like.
  • the method may further include the following step (c): providing a reflective surface 30 to reflect a portion of the white light, the partially reflected white light being the same as the light filtered by the filter 20 Directional projection.
  • the reflecting surface may be a paraboloid of a reflecting device 31 or an inner surface of the heat sink 12.
  • the method may further include the following step (d): the LED signal lamp is further provided with a casing 40, the casing 40 includes an optical distributor 41, and the optical distributor 41 is a colored outer lens.
  • the output of the colored light emitted by the LED signal light is more uniform and the color is more vivid.
  • the formed LED signal light may be a police light, a beacon light, a ship navigation light or a building aviation obstacle light.
  • the LED signal light may be a warning light comprising a plurality of light sources, and a corresponding plurality of light processors 20B disposed on the plurality of light source paths.
  • the plurality of light sources are a plurality of white LED illuminants 10B.
  • the plurality of white LED illuminators 10B are commercially available, and may be, for example, commercially available single-chip or multi-chip white LED illuminators.
  • the plurality of light processors 20B are respectively located on the light path of the plurality of white LED illuminants 10BB.
  • the plurality of light processors 20BB are respectively located at one side of the plurality of white LED illuminators 10BB. At least part of the white light emitted by each of the white LED illuminators 10BB is filtered into non-white light to obtain a non-white light signal lamp. In this embodiment, a non-white light warning light is obtained.
  • the plurality of light processors 20B may respectively filter at least part of the white light emitted by the plurality of white LED illuminants 10B into monochromatic lights such as red light, blue light, green light, yellow light, and violet light, thereby respectively Obtaining a red, blue, green, yellow, and violet signal light.
  • the plurality of light processors 20B can respectively filter at least part of the white light emitted by the plurality of white LED illuminators 10B into Red or yellow light, which can provide red or yellow warning lights.
  • the color signal lamp of the present invention obtains color signal light by filtering the light emitted by the plurality of white LED illuminants 10B, and the light source of the white LED is easily available in the existing market, and is relatively easy to use with the color LED illuminator.
  • the light source, the LED signal light of the present invention is easier to obtain a higher light intensity and is less expensive.
  • a higher luminous flux such as a white light LED source of 150 lumens per watt (lm) is already readily available on the market, and the intensity of the resulting colored light after being filtered into colored light by the optical processor 20B. It is still higher than the light intensity achieved by the color light obtained by using the color light LED chip alone.
  • the yellow warning light in this embodiment after being filtered by the optical processor 20B into yellow light, still has about 60% remaining, and still has about 90 lumens per watt of yellow light, which is still better than the market.
  • the luminous flux (50 to 60 lumens) of yellow light obtained by using a yellow LED illuminant as a light source is high.
  • filtering in the present invention means that the light emitted by the plurality of white LED illuminators 10B passes through the corresponding plurality of photoprocessors 20B, and only the monochromatic filtered light of a predetermined color of non-white light is obtained.
  • the predetermined color may be red, blue, green, yellow, or the like as described above.
  • the white LED illuminator 10B on the market can already achieve a higher luminous flux, and The research on the white LED illuminator 10B is still in progress on the market. Therefore, the luminous flux of the white LED illuminator 10B as a light source can be continuously improved, and the color LED illuminator 10B is less studied, and the luminous flux is still relatively high. Low value. Therefore, a white light LED illuminant is used as a light source to obtain a colored light signal lamp, and a high luminous flux white light LED illuminator can be directly purchased from the market, so that the manufacturing process thereof is relatively simple.
  • the LED signal lamp of the present invention comprises at least two columns of the white LED illuminators 10B.
  • the LED signal lamp comprises three columns, four columns, six columns, eight columns, or twelve columns.
  • the plurality of columns of white LED illuminants 10B are sequentially arranged such that the lines in which the plurality of columns of white LED illuminants 10B are located intersect to form an equilateral triangle, a regular quadrangle, a regular hexagon, a regular octagon, a regular dodecagon Or other regular polygons.
  • the plurality of columns of white LED illuminators 10B may not be arranged in a regular polygon to meet the needs of a signal light having a luminescent characteristic in a non-circular sector.
  • Each of the columns may also be provided with a different number of the white LED illuminators 10B than the other columns.
  • the present invention is not limited in this respect, and may be set according to specific needs in practical applications.
  • the signal lamp of the present invention may be an annular LED signal lamp, and "ringing" herein means that the white LED illuminants 10B are arranged to provide light projected circumferentially, and of course, preferably, the white LED illuminators 10B are arranged to provide Projected light in a 360° angular range along the circumferential direction.
  • one of the plurality of columns of the white LED illuminants 10B or the column of the white LED illuminators 10B is removed, so that it can be in a certain direction or several according to needs. No light is provided in one direction. That is to say, the LED signal light of the present invention can also provide a fan-shaped or semi-circular range of illumination as needed, for example, an illumination range of 180° or 270°.
  • the corresponding photoprocessors 20B of the white LED illuminants 10B can filter the light of the white LED illuminators 10B into different colors.
  • three rows of the white LED illuminators 10B of the six columns of the white LED illuminators 10B are correspondingly provided with a red light photo processor 20B, and the remaining three columns of the white LED illuminants 10B are correspondingly provided with a blue light processor.
  • the LED signal lamp further includes a controller 11B, which can selectively open six columns of the white LED illuminants 10B by opening and closing of the control circuit, thereby respectively providing red or blue light. Or you can alternate red and blue light. At this time, the cover of the LED signal light can be transparent.
  • the warning light includes six columns of the white LED illuminators 10B, and each of the white LED illuminators 10B includes three of the white LED illuminators 10B, each of which The light path of the white LED illuminant 10B is provided with a light processor 20B for filtering at least a portion of the white light emitted by the white LED illuminators 10B into yellow light to provide a yellow warning light.
  • the controller 11B can control the illumination of the white LED illuminants 10B or stop the illuminating, or at a predetermined time interval, the white LED illuminants 10B can be illuminated. This results in a yellow flash mode that provides a stronger visual impact and thus provides a more alerting effect.
  • the plurality of optical processors 20B are located at appropriate positions of the plurality of white LED illuminants 10B.
  • the plurality of optical processors 20B are also skillfully designed to have concentrating effect. That is, each of the optical processors 20B can radially converge the white light emitted by the corresponding white LED illuminators 10B, and filter them into non-white light before projecting them out.
  • the optical processor 20B not only functions to filter colors but also functions as a condensing light in the present invention. It is worth mentioning that after concentrating, the effective luminous flux projected into the appropriate area is improved, thereby enhancing the luminous intensity of the signal lamp.
  • the light processor 20B may be various lenses for collecting light, such as convex lenses.
  • each of the light processors 20B is a Fresnel lens having filter performance, and thus, each of the The light emitted by the white LED illuminator 10B is radially concentrated by the Fresnel lens, and is filtered into predetermined non-white light and then projected in mutually parallel directions, thereby improving illumination efficiency, and the illumination reaching the predetermined area is high.
  • Luminous flux is a Fresnel lens having filter performance, and thus, each of the The light emitted by the white LED illuminator 10B is radially concentrated by the Fresnel lens, and is filtered into predetermined non-white light and then projected in mutually parallel directions, thereby improving illumination efficiency, and the illumination reaching the predetermined area is high. Luminous flux.
  • Each of the photoprocessors 20B is respectively located at a suitable position in front of the corresponding white LED illuminant 10B, and its size and size can be set as needed to achieve the maximum concentrating effect, and the obvious spot can be cleared.
  • each of the optical processors 20B is further provided with at least one mounting member 21B such that each of the optical processors 20B is mounted by the at least one mounting member 21B in the corresponding At a suitable position on the light path of the white LED illuminant 10B, for example, each of the photoprocessors 20B is fixed to the corresponding mounting member 21B by a wire.
  • the LED signal lamp further includes a plurality of heat dissipation devices 12B, and the at least one mounting member 21B is disposed between the corresponding heat dissipation device 12B and the light processor 20B to dissipate the heat dissipation device 12B and the The light processors 20B are connected to each other.
  • the heat sink 12B includes a metal heat sink circuit board 121b and a heat sink 122B connected to the heat dissipation circuit board 121B.
  • the heat dissipation circuit board 121B and the heat sink 122B may be made of a metal material. As shown in FIG. 10B, each of the white LED illuminants 10B is disposed on the corresponding heat dissipation circuit board 121B.
  • each of the white LED illuminators 10B is disposed in a accommodating cavity 31B defined by a reflective surface 30B, the reflective surface 30 and the optical processor 20B, that is, The light emitted by the white LED illuminator 10B can be concentrated together with the photo processor 20B.
  • the reflective surface 30B may be a straight paraboloid, and the light reflected by the reflective surface 30B and the light passing through the optical processor 20B are converged to be projected substantially parallel to each other, as shown in FIG. 10B.
  • a gap may be left between the light processor 20B and the reflective surface 30 to allow another portion of the light to pass through the gap to the reflective surface 30B, and is not emitted by the filter 20 Go out.
  • the reflective surface 30B may be an inner surface of a reflective device having a reflective effect. As shown in FIG. 10B, the reflective surface 30B is a parabolic curved surface, and the shape thereof may be designed to be optimized according to requirements.
  • the light processor 20B (Fresnel lens) achieves the maximum concentration effect.
  • the reflective surface 30B can also only function as a reflection, and does not need to function as a concentrated light.
  • the LED signal lamp further comprises a housing 40B
  • the housing 40B comprises an optical distributor 41B
  • the optical distributor 41B will be the white LED All of the light emitted by the illuminant 10B is filtered into light of a desired color. That is, a portion of the light passing through the gap between the photoprocessor 20B and the reflective surface 30B is reflected on the reflective surface 30B, and is also filtered through the optical distributor 41B.
  • White light that is to say, the optical processor 20B and the optical distributor 41B can filter white light emitted from the corresponding white LED illuminator 10B into the same non-white light.
  • the optical distributor 41B not only functions as a filter but also optimally distributes the output light, and the light emitted by the white LED illuminator 10B is more uniformly projected to a suitable region.
  • the light that reaches the S3 region that is, the light reflected by the light reflecting surface 30B is also preferably projected in the same direction as the light passing through the light processor 20B, so that the light intensity reaching the illumination region is enhanced. And the light reflected by the light reflecting surface 30B passes through the light distributor 41B to form light of a desired color.
  • the light distributor 41B is a yellow lens, and light emitted from the white LED illuminant 10B does not reach the light processor 20B but is reflected on the reflective surface 30. Part of the light is also filtered by the yellow lens, and the light processor 20B filters most of the white light emitted by the white LED illuminator 10B into yellow light to provide a yellow warning light.
  • the warning light can directly use the yellow light distributor. Compared with the prior art, the yellow light LED illuminator is used as the light source, and the colorless transparent cover is the outer hood warning light. The appearance of the warning light of the present invention is more With traditional functional colors, it can give people a warning. It is worth mentioning that the optical distributor 41B can be directly used as a cover for the LED signal lamp.
  • the housing 40 further includes a base 42.
  • the light distributor 41B forms a cavity with the base 42B, and the plurality of white LED illuminants 10B A plurality of optical processors 20B and the like are disposed in the cavity.
  • the top of the housing 40B may further include a trim cover 43B to provide other decorative effects to the LED signal light, and also enhance the aesthetic effect.
  • the housing 40B also includes a necessary electrical wire 44B that is electrically coupled to the controller 11B to provide power to the controller 11B to operate the LED signal.
  • the wire 44B passes through the sealing plate 45B and is fixed by the sealant 46B.
  • the light distributor 41B and the base 42B are seamlessly and tightly coupled by a seal ring 47B.
  • the present invention provides an LED signal lamp that is equivalent to including one or more lighting units, each of which includes a white LED emitter 10B, a light processor 20BB, a reflective surface 30.
  • the white LED illuminator 10B emits white light, passes through the color filtering effect of the photo processor 20B, and the illuminating effect that the photo processor 20B and the reflecting surface 30B can additionally provide, thereby obtaining color signal light with improved illumination efficiency.
  • These illumination units are suitably arranged to provide colored light that is projected in the circumferential direction to provide an annular signal light.
  • the optical processor of the present invention may be substantially a concentrator. That is, the LED signal lamp of the present invention comprises at least one LED illuminator, and at least one optical processor disposed on the ray path of the at least one LED illuminator, the optical processor corresponding to the LED illuminator At least part of the emitted light is radially concentrated and projected. More specifically, when the optical processor of the present invention is substantially a concentrator, the LED illuminator may be a color LED illuminator, so that the optical processor may not function as a filter. You get colored light.
  • the LED illuminator is a white LED illuminator
  • the photo processor further has a filtering function to filter white light emitted by the white LED illuminator into light of a predetermined color of non-white light.
  • the method of forming the LED signal lamp of the present invention comprises the steps of: (a') providing white light by excitation of at least one white LED illuminant 10B;
  • the step (a') may further include the step (ar): arranging a plurality of the white LED illuminants 10B into a plurality of columns of white LED illuminators 10B, and the lines of the plurality of columns of white LED illuminants 10B intersect to form Polygons, which provide ring light.
  • each column of white LED illuminators 10B includes one or more of said white LED illuminators 10B.
  • the straight lines in which the plurality of columns of white LED illuminants 10B are located intersect to form a regular polygon such as an equilateral triangle, a regular quadrangle, a regular hexagon, a regular octagon, or a regular dodecagon.
  • the step (b') includes a step (br) of: arranging a light processor 20B on a ray path of each of the white LED illuminators, the optical processor 20B to pass through the optical processor 20B The white light is filtered into a monochromatic light of a predetermined color.
  • the photo processor 20B may be a Fresnel lens having filter performance, and the Fresnel lens is disposed at a position where light can be collected, so that the photo processor 20B can To the role of filtering and concentrating.
  • the predetermined color is red, blue, yellow, green, purple, or the like.
  • the method may further include the following step (c') : providing a reflective surface 30B to reflect a portion of the white light, the partially reflected white light being the same as the light filtered by the optical processor 20B The direction of the projection.
  • the reflecting surface may be a paraboloid of a light reflecting device 31B or an inner surface of the heat sink 12B.
  • the method may further include the following step (d') : the LED signal lamp is further provided with a casing 40B, the casing 40B includes an optical distributor 41B, and the optical distributor 41B is a colored outer lens.
  • the output of the colored light emitted by the LED signal light is more uniform and the color is more vivid. .
  • the formed LED signal light may be a police light, a beacon light, a ship navigation light or a building aviation obstacle light.
  • the LED signal lamp includes six columns of the white LED illuminators 10C, each column including one or more of the white LED illuminators 10C, and each of the LEDs A corresponding one of the filters 20C is disposed on the light path of the white light emitter 10C.
  • the six columns of white LED illuminants 10C are sequentially arranged such that the straight lines in which the plurality of columns of white LED illuminants 10C are located intersect to form a regular hexagon.
  • the LED signal lamp further includes a control module 60C, and the control module 60C can selectively control the opening and closing of each of the white LED illuminants 10C to enable the light energy generated by the LED signal lamp.
  • the control module 60C can selectively control the opening and closing of each of the white LED illuminants 10C to enable the light energy generated by the LED signal lamp.
  • the six columns of white LED illuminators are sequentially flashed to produce an effect of rotating light. More specifically, the six columns of the LED illuminators include a first column of white LED illuminators 101C, a second column of white LED illuminators 102C, a third column of white LED illuminators 103C, and a fourth column of white LED illuminators. 104C, fifth column white LED illuminator 105C, and sixth column white LED illuminator 106C, the control module 60C first opens the first column of white LED illuminators 101C to emit light, and is corresponding to the filter The light 20C is filtered to a desired color to provide signal light.
  • control module 60C turns on the second column white LED illuminator 102C or the sixth column white LED illuminator 106C adjacent to the first column white LED illuminator 101C, and closes the first column White LED illuminator 102. By repeating such an operation, signal light that blinks clockwise or counterclockwise can be obtained separately. It is to be noted that the control module 60C can enable at least one of the columns of the white LED illuminators to be in an open state, so that the light emitted by the LEC signal lamp can be continuously continued.
  • the control module 60C can simultaneously open two adjacent columns of the white LED illuminators when the white LED illuminants of the column white LED illuminators emit light, such as the white LED illuminators of the first and second columns. 101C and 102C first emit light at the same time to provide illumination at an angle of 120°, and then sequentially turn on the white LED illuminants 103C and 104C in the third and fourth columns, and then turn on the white LEDs in the fifth and sixth columns. The illuminants 105C and 106C are then repeated for the above steps.
  • control module selectively illuminates the plurality of columns of white light LE illuminants by sequentially providing signal light of a range of angles, which may be, for example, 30°, 45°, 60°. 90°, 120° or 180°.
  • the first column of white LED illuminators 101C and the fourth column of white LED illuminators 104C emit light and then turn off, and then the second column of white light
  • the LED illuminator 102C emits light and then turns off with the fifth column of white LED illuminators 105C, and then the third column of white LED illuminators 103C and the sixth column of white LED illuminators 106C illuminate and then turn off. This repetition can provide different signal lights.
  • the white LED illuminator 105C then turns on the fourth column of white LED illuminators 104C and then turns off all of the white LED illuminators.
  • the above steps are repeated to obtain a different pattern of signal light. That is, the LEC signal lamps provide different signals by controlling different patterns exhibited by the white LED illuminators 10C.
  • the controller 60C first controls the first, second and third columns of white LED illuminants 101 C, 102C and 103C to emit light first, thereby
  • the LEC signal lamp provides illumination of the semi-circular signal light of approximately 180° angle, then turns off the first, second and third columns of white LED illuminants 101 C, 102C and 103C, and opens the fourth, fifth and sixth columns
  • the white LED illuminators 104C, 1050 and 1060 provide illumination of additional semi-circular signal light at approximately 180° angle. That is, the controller 60C can control the opening and closing of the plurality of columns of the white LED illuminators.
  • the light emitted by the conventional color light illuminator may have a dark area in the area where the light is superimposed, and in the present invention, as in the above modified embodiment, the first, second and third columns of white light LEDs
  • the first and second columns of white LED illuminants 101 C, 102C are filtered by the filter 20C and concentrated, and do not appear in the superimposed area of the illumination.
  • dark areas likewise, after the second and third columns of white LED illuminants 101 C, 102C are filtered by the filter 20C and concentrated, no obvious dark areas appear in the superimposed area of the illumination.
  • the LED signal light includes an LED light source, the LED light source including one or more LED light beads 100, the LED signal light further including a light cover 200 to accommodate the one or more LED light beads 100.
  • the light emitted from the LED lamp bead 100 is colored light of a predetermined color, so that the color LED signal lamp required by the present invention can be obtained.
  • the structure of the lampshade 200 can be similar to the housing 40 of the LED signal light of the preferred embodiment described above.
  • each of the LED lamp beads 100 is packaged with a white LED illuminator 110, and after packaging, the white light of the white LED illuminator 110 is filtered into a desired color of a predetermined color.
  • the package 120 of each of the LED lamp beads 100 may have a filtering function to filter white light passing through the package body 120 into desired color light of a predetermined color.
  • each of the LED lamp beads 100 has a bracket, a wire, a heat sink, and the like, and the white LED illuminator 110 may also be provided with a phosphor.
  • the emitted light is the colored light of the predetermined color.
  • the material of the package body 120 may be an epoxy resin, a glass material, a silicone material, a polycarbonate, a polymethyl methacrylate or the like.
  • the package 120 of the present invention has a function of color filter with respect to the prior art. It can be said that the LED lamp bead of the present invention is substantially white light as a light source, but after encapsulation, the emitted light is colored light formed by filtering, which is not expected in the prior art.
  • each of the LED lamp beads 100 includes at least one white LED illuminator 110, and the LED signal lamp is provided with at least one concentrator 130 in a light path of the LED lamp bead 100.
  • the concentrator 130 is located at an appropriate position of the LED lamp bead 100.
  • the plurality of concentrators 130 are skillfully designed to have a collecting effect. That is to say, each of the filters 130 can radially concentrate the white light emitted by the corresponding LED lamp bead 100, and filter it into non-white light before projecting.
  • the concentrator 130 and the filter described above are because the light emitted from the LED lamp bead 100 is already colored light after filtering.
  • the difference of 20 is that the concentrator 130 may not provide a color filter function, but only performs a function of collecting light.
  • the concentrator 130 may be various lens structures for concentrating, such as a convex lens structure.
  • each of the concentrators 130 may be a Fresnel lens, and thus, each of the LED lamps The light emitted by the beads 100 is radially concentrated by the Fresnel lens and projected in parallel directions, thereby The illumination efficiency is improved, and the illumination reaching the predetermined area has a higher luminous flux.
  • Each of the LED lamp beads 100 may be provided with a corresponding one of the concentrators 130. It is also possible that a plurality of the concentrators 130 form a unitary structure to correspond to a plurality of the LED lamp beads 100.
  • each of the white LED illuminators 110 is disposed in a receiving cavity defined by a light reflecting device 140, and the light reflecting device 140 and the concentrating device 130 together perform light emitted by the white LED illuminator 110. Convergence. The light reflected by the light reflecting means 140 and the light passing through the concentrator 130 are concentrated to be projected substantially parallel to each other. A gap may be left between the concentrator 130 and the light reflecting device 140 to allow another portion of light to pass through the gap to the reflecting device 140 and be reflected outward without being affected by the concentrator 130. Go out. Of course, this gap can also be fitted with a transparent lens.
  • the LED lamp bead 100 of the present embodiment reaches the color light of a predetermined color.
  • arranging a plurality of said LED bead 100 in a plurality of columns, each column comprising one or more of said LED bead 100 it is possible to obtain an LED signal lamp having an illumination area at different angular ranges or providing an illumination area of a different shape.

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Abstract

一种LED信号灯，包括：至少一白光LED发光体（10），和至少一滤光器（20）。至少一滤光器（20）分别设置在至少一白光LED发光体（10）的光线路径上，以将白光LED发光体（10）发射的至少部分光线过滤成一种彩色单色光。利用白光LED发光体形成彩色光信号灯，光照效率得以提高，并且结构简单，节省成本。

Description

LED信号灯
技术领域
本发明涉及一种信号灯， 特别涉及一种以白光 LED为光源的信号灯。 背景技术
信号灯如警灯， 航标灯等通常使用彩色光来给人以警示和提醒的作用。例如 警察或消防通常使用红蓝交替光或红光的警灯， 工程施工抢险等用黄色警灯， 救 护车一般用蓝色警灯。 为了增强警示作用， 警灯还提供闪光， 其可以通过附有小 电机带动半边遮光片不断旋转而呈现闪光模样或是在芯片中设置有闪光电路来 实现。
近年来， LED 作为继白炽灯、 荧光灯和气体放电灯之后的新型光源， 自身 有着其他照明光源所没有的许多优点， 譬如低电压、 长寿命、 体积小、 重量轻、 响应快、 无辐射、 无污染及耐各种恶劣条件等。 因此以 LED为光源的信号灯是 一个新趋势。
信号灯一般采用彩色光以示区别并起到警觉的作用。 例如传统的 LED信号 灯可以利用封装在透明灯罩内的红光芯片， 蓝光芯片， 黄光芯片来产生对应的红 光， 蓝光， 黄光。 但是因为现有的研究方向主要集中在白光 LED上， 而少见于 单独研究这些红光芯片， 蓝光芯片， 黄光芯片。 也就是说， 白光 LED的有效光 通量现在可以达到一个较高的数值并且在不断地提高中， 但是这些彩色 LED芯 片的有效光通量仍然维持在较低的数值， 从而通过安装彩色 LED芯片来提供彩 色光的效率是相对比较低的。
另外， 现有研究还主要集中于提高 LED芯片光源的光通量， 而少见对 LED 灯具的整体物理结构的改进以减少光损， 也就是说， 现有的研究很少通过优化 LED灯具的结构来减少光照盲区， 并且达到聚光作用， 从而提高 LED灯的发光 效率。 发明内容 本发明的主要目的在于， 提供一种 LED信号灯， 其以白光 LED发光体为光 源， 在所述白光 LED发光体光源的光线路径上设置有滤光器， 所述滤光器将所 述白光 LED发光体的至少部分光线过滤成非白色光，从而利用白光 LED发光体 形成非白色光信号灯。
本发明的另一目的在于， 提供一种 LED信号灯， 其包括多列首尾顺次排列 的所述白光 LED发光体和对应的多列的所述滤光器， 从而使所述多列白光 LED 发光体提供均匀的环射光。
本发明的另一目的在于， 提供一种 LED信号灯， 所述滤光器位于所述白光 LED发光体前面并且对于白光 LED发光体具有聚光作用的位置附近， 从而能产 生聚光的作用， 同时所述滤光器还是滤镜， 以起到将所述白光 LED发光体发出 的白色光过滤成彩色信号光的作用。 也就是说， 本发明的 LED信号灯的滤光器 能起到两个作用， 聚光和颜色过滤。
本发明的另一目的在于， 提供一种 LED信号灯， 对于每一个所述白光 LED 发光体， 其提供有一滤光器和一反光面， 以将 LED发光体发出的光进行汇聚， 从而相对于使用彩色 LED发光体， 光照强度得到增强。
本发明的另一目的在于， 提供一种 LED信号灯， 相比于现有技术中， 信号 灯使用彩色 LED芯片作光源， 为了使光通量达标， 减少衰减而采用透明外罩， 本发明的 LED信号灯可以直接使用所需颜色的外罩， 即可使用彩色外罩， 从而 从所述白光 LED发光体发出的光穿透彩色光分配器后形成纯度相对较高的彩色 光， 并且彩色光外罩本身就可以起到装饰或警示的作用。
本发明的另一目的在于， 提供一种 LED信号灯， 相比于现有技术中使用彩 色光 LED发光体为光源， 例如黄光 LED, 30分钟之内便衰减大约 50%， 本发明 的 LED信号灯以白光 LED发光体为光源， 而白光 LED在正常使用条件下其发 光基本没有衰减， 从而使得本发明的 LED信号灯能得到相对较高的光强。
本发明的另一目的在于， 提供一种 LED信号灯， 其 LED光源采用将白光
LED发光体用有色透明封装体封装， 从而其白光 LED发光体发出来的光经过滤 后形成彩色光， 将所述经特殊处理的白光 LED发光体作为光源从而形成本发明 所需要的所述 LED信号灯。
本发明的另一目的在于， 提供一种 LED信号灯， 其用所述白光 LED发光体 代替彩色光 LED发光体如红光 LED发光体， 蓝光 LED发光体， 黄光 LED发光 体等， 结构简单， 制作容易， 成本低廉。
为达到以上目的， 本发明提供一种 LED信号灯， 其包括：
至少一白光 LED发光体， 和
至少一滤光器， 所述至少一滤光器分别设置在所述至少一白光 LED发光体 的光线路径上， 以将所述白光 LED发光体发射的至少部分光线过滤成非白色光 的预定颜色的光。
在一个实施例中， 所述滤光器位于对应的所述白光 LED发光体的光线路径 上的具有聚光作用的位置上，从而同时起到聚光作用和允许所述预定颜色的光透 过的作用。
在一个实施例中， 所述滤光器包括具有聚光作用的透镜， 优选地， 所述透镜 是具有滤光性能的凸透镜或菲涅尔透镜。
在一个实施例中， 所述 LED信号灯还包括至少一反光面， 从对应的所述白 光 LED发光体的发射的光线到达所述反光面并被反射后沿着相同的方向投射， 从而起到汇聚光线的作用。
在一个实施例中，所述反光面反射后的光与所述滤光器过滤后的光沿着相同 的方向投射。
在一个实施例中， 所述反光面是一个反光装置的内表面。
在一个实施例中， 每所述白光 LED发光体还设置有一散热装置， 所述散热 装置包括散热线路板和连接到所述散热线路板的散热片， 所述白光 LED发光体 连接于所述散热线路板。
在一个实施例中， 每所述白光 LED发光体还设置有一散热装置， 所述反光 面可以是所述散热装置的内表面， 也可以是单独设置的反光元件的内表面。
在一个实施例中， 所述 LED信号灯还包括一壳体， 所述壳体包括一光分配 器， 所述光分配器只允许所述预定颜色的光透过。
在一个实施例中， 所述光分配器进一步起到分配光线投射方向的作用。 在一个实施例中，每所述滤光器藉由至少一安装构件与对应的所述散热线路 板或所述光分配器得以安装就位。
在一个实施例中，所述至少一白光 LED发光体被排列成提供环射的 360° 角 度范围的光。
在一个实施例中， 所述至少一白光 LED发光体被排列成包括多列所述白光 LED发光体， 每列所述白光 LED发光体包括一个或多个所述白光 LED发光体， 多列所述白光 LED发光体所在的直线相交以排列成多边形的形状， 以使所述白 光 LED发光体提供环射信号光。
多列所述白光 LED发光体所在的直线相交以排列成正多边形的形状， 所述 正多边形选自： 正三角形、 正四边形、 正六边形、 正八边形、 和正十二边形或其 他正多边形的一种。
所述预定颜色选自红色、 蓝色、 黄色、 绿色、 和紫色中的一种。
所述 LED信号灯选自警灯、 航标灯、 航空障碍灯和船舶航行灯中的一种。 在一个实施例中， 所述 LED信号灯包括多个所述白光 LED发光体， 多个所 述白光 LED发光体排列成多列白光 LED发光体， 所述多列白光 LED发光体所 在的直线相交以排列成多边形， 每列白光 LED发光体包括一个或多个所述白光
LED发光体。
在一个实施例中， 所述 LED信号灯还包括一个控制模块， 以选择性地打开 或关闭所述多列白光 LED发光体，使所述 LED信号灯的信号光呈现预定的样式。
在一个实施例中， 所述控制模块顺时针或逆时针地顺次打开所述多列白光
LED发光体， 以提供一种走马式旋转闪烁光效。
在一个实施例中， 所述控制模块使所述多列白光 LED发光体中至少有一列 所述白光 LED发光体处于打开状态，从而使所述 LED信号灯产生的信号光保持 连续不断。
在一个实施例中， 所述控制模块使所述多列白光 LED发光体中选择性地提 供 30° ， 45° ， 60° ， 90° ， 120° 或 180° 角度范围的信号光照明。
根据本发明的另外一方面， 本发明提供一种 LED信号灯的形成方法， 所述 方法包括如下步骤：
(a) 通过至少一白光 LED发光体受激发而提供白色光； 和
(b) 所述白色光中的至少部分所述白色光被过滤成非白色光。
为达到以上目的， 本发明提供一种 LED信号灯， 包括：
至少一 LED发光体， 和
至少一光处理器， 所述至少一光处理器分别设置在所述至少一 LED发光体 的光线路径上，以将所述 LED发光体发射的至少部分光线径向汇聚后投射出去。
在一个优选实施例中， 所述 LED信号灯还包括至少一反光面， 所述至少一 LED 发光体分别设置在所述反光面形成的容纳腔中， 所述反光面用于反射部分 所述 LED发光体发出的光， 所述部分被反射的光与被所述光处理器过滤后的光 沿着相同的方向投射。
在一个优选实施例中， 所述 LED发光体为白光 LED发光体， 所述光处理器 进一步具有滤光作用， 以将穿过所述光处理器的所述白光 LED发光体发出的至 少部分白色光过滤成预定颜色的单色光。
在一个优选实施例中， 所述光处理器是具有滤光性能的菲涅尔透镜或凸透 镜， 所述菲涅尔透镜或所述凸透镜设置在具有聚光作用的位置处， 从而所述光处 理器起到滤光和聚光的作用。
在一个优选实施例中， 所述光处理器是具有聚光作用的菲涅尔透镜或凸透 镜， 所述 LED发光体选自白光 LED发光体、 黄光 LED发光体、 红光 LED发光 体、 蓝光 LED发光体、 绿光 LED发光体和紫光 LED发光体中的一种。
在一个优选实施例中，多个所述白光 LED发光体排列成多列白光 LED发光 体， 所述多列白光 LED发光体所在的直线相交以排列成多边形， 从而提供环射 光。
在一个优选实施例中， 每列白光 LED发光体包括一个或多个所述白光 LED 发光体， 所述多列白光 LED发光体所在的直线相交以形成正多边形。
所述预定颜色为红色、 蓝色、 黄色、 绿色、 或紫色。
在一个优选实施例中， 所述反光面是一个反光装置的抛物面， 或者是散热装 置的内表面。
在一个优选实施例中， 所述 LED信号灯还包括一壳体， 所述壳体包括一个 光分配器， 所述光分配器是一个外透镜， 以只允许所述预定颜色的光穿过。
该 LED信号灯使用了一种经特殊封装处理而成的彩色 LED灯珠本发明还 提供一种 LED信号灯， 其包括： 作为光源的彩色 LED灯珠， 所述彩色 LED灯 珠包括至少一白光 LED发光体， 并且所述白光 LED发光体在封装成所述 LED 灯珠后， 产生预定颜色的彩色光， 从而提供所述 LED信号灯所需彩色光。
在一个优选实施例中， 各个所述白光 LED发光体设置有一透明封装体， 所 述透明封装体为有色透明封装体，其将所对应的每一有色透明封装体内所述白光 LED发光体发出的白光过滤成所述预定颜色的彩色光。
在一个优选实施例中， 所述 LED 信号灯还包括至少一聚光器和一反光装 置， 所述聚光器设置在所述 LED芯片的光线路径的适宜位置， 并且所述聚光器 具有聚光作用， 对于所述 LED灯珠发出来的光线， 被所述反光装置反射后的光 与被所述聚光器汇聚后的光沿着相同的方向投射， 从而起到汇聚光线的作用。 附图说明
图 1 为根据本发明的一个优选实施例的 LED信号灯的分解示意图。
图 2为根据本发明的上述优选实施例的 LED信号灯的外形的结构示意图。 图 3为根据本发明的上述优选实施例的 LED信号灯的剖视图。
图 4为根据本发明的上述优选实施例的 LED信号灯的内部结构示意图。 图 5为根据本发明的上述优选实施例的 LED信号灯的剖视图， 显示从白光
LED发光体发出的光经滤光器后被汇聚并且被过滤成需要的颜色。
图 6A为根据本发明另一个优选实施例的 LED信号灯的局部放大剖视图。 图 6B为根据本发明另一个优选实施例的 LED信号灯的局部放大剖视图。 图 7为根据本发明的第三个优选实施例的 LED信号灯的分解示意图。 图 8为根据本发明的上述优选实施例的 LED信号灯的外形的结构示意图。 图 9为根据本发明的上述优选实施例的 LED信号灯的剖视图。
图 10为根据本发明的上述优选实施例的 LED信号灯的内部结构示意图。 图 11为根据本发明的上述优选实施例的 LED信号灯的剖视图，显示从白光 LED发光体发出的光经光处理器后被汇聚并且被过滤成需要的颜色。 图 12为根 据本发明第四优选实施例的 LED信号灯的结构示意图。
图 13为根据本发明的第四优选实施例的变形实施方式的 LED信号灯的结构 示意图。
图 14是根据本发明的第五个优选实施例的 LED信号灯的结构示意图。 图 15是根据本发明的上述第五个优选实施例的 LED信号灯的内部结构示意 图。
图 16是根据本发明的上述第五个优选实施例的 LED信号灯的 LED灯珠的 结构示意图。 具体实施方式
如图 1至图 5所示为根据本发明的一个优选实施例的 LED信号灯。 在本实 施例中， 所述 LED信号灯可以为警灯， 其包括多个光源， 和设置在所述多个光 源路径上的对应的多个滤光器 20。
根据本发明， 所述多个光源为多个白光 LED发光体 10。所述多个白光 LED 发光体 10可以从市场上购得，例如可以是市售的单芯片或多芯片型白光 LED发 光体。所述多个滤光器 20分别位于所述多个白光 LED发光体 10的光线路径上， 例如， 所述多个滤光器 20分别位于所述多个白光 LED发光体 10的一侧， 将每 个所述白光 LED发光体 10发出的至少部分白色光过滤成非白色光，从而得到非 白色光的信号灯， 在本实施例中， 也即是得到非白色光警灯。 具体地， 所述多个 滤光器 20可以分别将所述多个白光 LED发光体 10发出的至少部分白色光过滤 成红光， 蓝光， 绿光， 黄光， 紫光等单色光， 从而分别得到红光， 蓝光， 绿光， 黄光， 紫光的信号灯， 在本实施例中， 所述多个滤光器 20可以分别将所述多个 白光 LED发光体 10发出的至少部分白色光过滤成红光或黄光，从而可以提供红 光或黄光警灯。
本发明的根本意义在于彩色信号灯通过过滤所述多个白光 LED发光体 10发 出的光得到彩色信号光， 而优质的白光 LED的光源在现有市场上是很容易获得 的， 并且相对于直接用彩色 LED发光体作光源， 本发明的 LED信号灯更容易获 得较高的光强并且价格更便宜。 例如一个较高的光通量例如每瓦 150流明 （lm) 的白光 LED光源已经是很容易在市场上购得，在经所述滤光器 20过滤成彩色光 后， 所得到的彩色光的光强仍然高于单独采用彩色光 LED芯片所得到的彩色光 的所达到的技术指标植的光强。例如本实施例中的黄色警灯， 在经过所述滤光器 20过滤成黄色光后， 还剩下大约 60%， 则仍然具有每瓦大约 90流明 （lm) 的黄 光，其仍然比市场上出售的以黄光 LED发光体作光源得到的黄光的光通量（50〜 60流明） 要高。
本发明中的 "过滤"指的是， 所述多个白光 LED发光体 10发出的光分别经 过对应的所述多个滤光器 20后， 只得到非白色光的预定颜色的单色光， 所述的 预定颜色可以是上述的红色， 蓝色， 绿色， 黄色等。
因为市场上的白光 LED发光体 10已经可以达到具有较高的光通量，并且市 场上对白光 LED发光体 10 的研究还在不断进行中， 所以说， 作为光源的白光 LED发光体 10的光通量可以继续提高， 而对彩色 LED发光体 10研究还较少， 其光通量还处于较低的数值。 从而， 以白光 LED发光体作为光源， 得到彩色光 的信号灯， 高光通量的白光 LED发光体可以直接从市场上购买得到， 从而其制 作过程相对简单。
值得一提的是， 本发明的 LED信号灯包括至少两列所述白光 LED发光体 10， 例如作为实例， LED 信号灯包括三列， 四列， 六列， 八列， 或十二列等的 所述白光 LED发光体 10， 每一列包括一个或多个白光 LED发光体 10。 从而所 述多列白光 LED发光体 10顺次地排列以使所述多列白光 LED发光体 10所在的 直线相交以形成正三角形、 正四边形、 正六边形、 正八边形、 正十二边形或其他 正多边形。 当然， 所述多列白光 LED发光体 10可以不排列成正多边形， 以满足 非环射的扇形区域内发光特性信号灯的需要。每一列也根据需要可以设置与其他 列不同数目的所述白光 LED发光体 10， 本发明在此方面不受限制， 实际应用时 可以根据具体需要进行设置。
可以预料到的是， 提供的所述白光 LED发光体 10的列越多， 数目越多， 这 些白光 LED发光体 10所产生的光越呈环射状，投射出去的光的明亮区域和较暗 区域可以最大限度地叠加在一起， 从而可以提供 360° 角度的均匀光照。 本发明 的信号灯可以是环射 LED信号灯， 这里的 "环射"指的是这些白光 LED发光体 10被排列成提供沿圆周投射的光， 当然优选地， 这些白光 LED发光体 10被排 列成提供沿圆周方向的 360° 角度范围内的投射光。 可选择地， 根据一些具体的 需要， 这些多列的所述白光 LED发光体 10 中的其中某一列或某些列所述白光 LED发光体 10被去除， 从而可以根据需要在某一个方向或几个方向上不提供光 照。 也就是说， 本发明的 LED信号灯也可以根据需要提供扇形或半圆形范围的 光照， 例如 180° 或 270° 角度范围的光照。
值得一提的是， 这些列所述白光 LED发光体 10的对应的所述滤光器 20可 以将所述白光 LED发光体 10的光过滤成不同的颜色。例如在六列所述白光 LED 发光体 10中的三列所述白光 LED发光体 10对应设置有红光滤光器 20， 而其余 三列所述白光 LED发光体 10对应设置有蓝光滤光器 20， 所述 LED信号灯进一 步包括有一个控制器 11， 其可以通过控制电路的开合， 而使六列所述白光 LED 发光体 10可选择性地打开， 从而分别提供红光或蓝光， 或者可以交替的红光和 蓝光。 此时， LED信号灯的外罩可以是透明的。
在本实施例中， 作为一个警灯的实例， 这个警灯包括六列所述白光 LED发 光体 10， 每列所述白光 LED发光体 10包括三个所述白光 LED发光体 10， 每个 所述白光 LED发光体 10的光线路径上设置有一个所述滤光器 20， 以将这些白 光 LED发光体 10发出的白色光中的至少部分白色光过滤成黄色光，从而提供一 个黄色警灯。
可以想到的是， 在上述黄色警灯的实例中， 所述控制器 11可以控制这些白 光 LED发光体 10 的发光或停止发光， 或者说， 以预定的时间间隔使这些白光 LED发光体 10发光， 从而呈现黄色闪光的模式， 以提供更强的视觉冲击作用， 从而也提供更加警示的作用。
所述多个滤光器 20位于所述多个白光 LED发光体 10的恰当位置上， 优选 地， 在本实施例中， 所述多个滤光器 20还被巧妙地设计成具有聚光的作用。 也 就是说， 每所述滤光器 20可以分别将对应的所述白光 LED发光体 10发出的白 光进行径向汇聚， 并且过滤成非白色光后再投射出去。
也就是说， 所述滤光器 20在本发明中不仅起到过滤颜色的作用， 还起到聚 光的作用。值得一提的是， 经过聚光后， 投射到适宜区域内的有效光通量得到提 高， 从而增强了信号灯的发光强度。
所述滤光器 20可以是各种起到聚光作用的透镜， 如凸透镜， 作为一个实例， 每个所述滤光器 20是一个具有滤光性能的菲涅尔透镜， 从而， 每所述白光 LED 发光体 10发出的光经所述菲涅尔透镜径向汇聚， 并且过滤成预定的非白色光后 沿着互相平行的方向投射， 从而提高了光照效率， 到达预定区域的光照具有较高 的光通量。
值得一提的是， 在本发明的这个优选实施例中， 将滤光和聚光的性能都整合 在所述滤光器 20上， 而不是单独的提供滤光片和聚光透镜的结构， 这样减少了 部件， 简化了结构。 而且如果采用两个单独的部件， 光需要穿透这两个部件， 路 径变长， 并且需要穿过多个界面， 导致部分光被反射， 这样势必会造成光强的损 失。
每个所述滤光器 20分别位于对应的所述白光 LED发光体 10前方适宜的位 置上， 其尺寸和大小可以根据需要设置， 以达到最大的聚光效果， 并且可以清除 明显的光点。 在这个警灯的实例中， 每个所述滤光器 20还提供有至少一个安装 构件 21， 从而每个所述滤光器 20藉由所述至少一个安装构件 21得以安装在对 应在所述白光 LED发光体 10的光线路径上的适宜位置处，例如每个所述滤光器 20通过镙丝固定在对应的所述安装构件 21上。 更具体地， 所述 LED信号灯还 包括多个散热装置 12，所述至少一个安装构件 21设置在对应的所述散热装置 12 和所述滤光器 20之间以将所述散热装置 12和所述滤光器 20相互连接。 当然， 所述滤光器 20的安装也可以是采用其他的方式， 只要能设置到适宜的位置起到 聚光和过滤的作用即可。 所述散热装置 12包括金属散热线路板 121和连接到所 述散热线路板 121的散热片 122， 所述散热线路板 121和所述散热片 122可以由 金属材料制得。如图 3所示， 每所述白光 LED发光体 10设置在对应的所述散热 线路板 121上。
更值得一提的是， 如图 3中所示， 每所述白光 LED发光体 10设置在由一个 反光面 30界定的容纳腔 31中， 所述反光面 30和所述滤光器 20， 即可以与所述 滤光器 20—起将所述白光 LED发光体 10发出的光进行汇聚。所述反光面 30可 以是直条形抛物面，经过所述反光面 30反射后的光和穿过所述滤光器 20的光被 汇聚成大致互相平行地投射， 如图 3中所示，所述滤光器 20与所述反光面 30之 间可以留有空隙， 以允许另外一部分光穿过这个间隙到达所述反光面 30上并不 受所述滤光器 20的影响而向外反射出去。
所述反光面 30可以是一个反光装置的具有反光作用的内表面，如图 3所示， 所述反光面 30为抛物形曲面， 其形状可以根据需要设计成最优化的状态， 以与 所述滤光器 20 (菲涅尔透镜） 达到最大的聚光的效果。
值得一提的是，在本发明的所述白光 LED发光体 10能够提供足够的光强时， 所述反光面 30也可以只起到反光的作用， 而不需要起到汇聚光线的作用。
如图 5所示， 当一个所述白光 LED发光体 10工作产生白光时， 部分白光到 达所述滤光器 20 (菲涅尔透镜）， 然后被所述滤光器 20 (菲涅尔透镜）会聚并过 滤成彩色的单色光， 如图中所示，所述滤光器 20 (菲涅尔透镜）与所述白光 LED 发光体之间的 S1区域之间，是从所述白光 LED发光体为中心发出的沿着径向发 散的白光， 在经过所述滤光器 20 (菲涅尔透镜）后的 S2区域， 这些沿着径向发 散的白光被汇聚成互相平行的光并且被过滤成非白色的彩色光。
值得一提的是， 根据本发明的这个优选的实施例， 所述 LED信号灯还包括 一个壳体 40，所述壳体 40包括一光分配器 41，所述光分配器 41将所述白光 LED 发光体 10发出的全部光过滤成想要的颜色的光。 也就是说， 穿过所述滤光器 20 与所述反光面 30之间的空隙的部分光到达所述反光面 30上被反射后，穿过所述 光分配器 41时也被过滤成非白色光。也即是说， 所述滤光器 20与所述光分配器 41可以将从对应的所述白光 LED发光体 10发出的白光过滤成同一种非白色光。 值得一提的是， 所述光分配器 41不仅起到滤光的作用， 也可以具有对输出 光做优化分配的作用，其将所述白光 LED发光体 10发出的光投向更均匀的区域。
如图 5所示，到达 S3区域即被所述反光面 30反射的光最好也与穿过所述滤 光器 20的光沿着相同的方向投射， 从而到达光照区域的光强得到增强， 并且被 所述反光面 30反射的光穿过所述光分配器 41后形成所需颜色的光。
作为一个实例， 在上述警灯中， 所述光分配器 41为黄色透镜， 从所述白光 LED发光体 10发出的光未到达所述滤光器 20而是在所述反光面 30上反射的部 分光也被所述黄色透镜过滤， 所述滤光器 20将大部分所述白光 LED发光体 10 发出的白光过滤成黄光， 从而提供黄色警灯。 而且在本实施例中， 警灯可以直接 用黄色光分配器， 相对于现有技术中以黄光 LED发光体为光源， 无色透明罩为 外罩的警灯， 本发明的警灯在外观上也更具有传统的功能色彩， 更能给人以警示 作用。 值得一提的是， 所述光分配器 41可以直接用作所述 LED信号灯的外罩。
在实施为警灯的 LED信号灯的本优选实施例中， 所述壳体 40还包括底座 42， 所述光分配器 41与所述底座 42形成一个腔体， 所述多个白光 LED发光体 10， 多个滤光器 20等装置都设置在所述腔体中。所述壳体 40顶部还可包括一个 修饰罩 43， 以给所述 LED信号灯提供其他装饰作用， 也增强美观效果。 所述壳 体 40还包括必要的电线 44， 所述电线 44电性连接到所述控制器 11， 以给所述 控制器 11提供电源供应， 从而操作所述 LED信号灯的运行。 所述电线 44穿过 密封板 45并且通过密封胶 46固定。所述光分配器 41与所述底座 42通过密封圈 47得以无缝紧密连接。
如图 6A和图 6B所示， 为根据本发明的另外一个实施例的 LED信号灯， 本 实施例中的 LED信号灯与上述实施例中的 LED信号灯具有类似结构。而在本实 施例中， 所述反光面 30A为所述散热装置 12A的内表面， 也就是说， 所述散热 装置 12A的内表面具有反光作用， 从而与作为滤光器 20A的菲涅尔透镜一起起 到聚光的作用， 使对应的所述白光 LED发光体投射出去的光比较笔直， 并且与 所述反光面 30A连接的有一滤光罩 50A, 以用来允许预定颜色的光透过。 也就 是说， 起到与上述实施例的光分配器 41作用相同的滤光罩 50A直接与所述反光 面 30A对接， 以形成一个封闭的容纳腔 31A。
本发明提供了一种 LED信号灯， 其相当于包括了一个或多个发光单元， 每 个发光单元包括一白光 LED发光体 10， 一滤光器 20， 一反光面 30。 所述白光 LED发光体 10发出白光， 经过所述滤光器 20的颜色过滤作用， 以及滤光器 20 和反光面 30可以额外提供的聚光作用， 从而得到光照效率提高的彩色信号光。 这些发光单元经过合适的安排， 可以提供沿圆周方向投射的彩色光， 从而提供环 射信号光。
本发明实质上提供一种 LED信号灯的形成方法， 该方法包括如下步骤：
(a) 通过至少一白光 LED发光体 10受激发而提供白色光； 和
(b) 所述白色光中的至少部分所述白色光被过滤成非白色光。
所述步骤（a)还可以包括步骤（a.l ): 将多个所述白光 LED发光体 10排列 成多列白光 LED发光体 10， 所述多列白光 LED发光体 10所在的直线相交以形 成多边形， 从而可以提供环射光。
在上述步骤 （a.l ) 中， 每列白光 LED发光体 10包括一个或多个所述白光 LED发光体 10。
在上述步骤 （a.l ) 中， 所述多列白光 LED发光体 10所在的直线相交以形 成正多边形， 如正三角形、正四边形、正六边形、正八边形、或正十二边形等等。
所述步骤 （b) 包括步骤 （b.l ): 在每所述白光 LED发光体的光线路径上设 置有一滤光器 20， 所述滤光器 20将穿过所述滤光器 20的所述白色光过滤成预 定颜色的单色光。
在上述步骤 （b.l ) 中， 所述滤光器 20可以为具有滤光性能的菲涅尔透镜， 所述菲涅尔透镜设置在可以聚光的位置处， 从而所述滤光器 20可以起到滤光和 聚光的作用。
在上述步骤 （b.l ) 中， 所述预定颜色为红色、 蓝色、 黄色、 绿色、 紫色等。 该方法还可包括如下步骤 （c): 设置一反光面 30以反射部分所述白色光， 所述部分被反射的所述白色光与被所述滤光器 20过滤后的光沿着相同的方向投 射。
在上述步骤（c) 中， 所述反光面可以为一个反光装置 31的抛物面， 或者是 散热装置 12的内表面。
该方法还可包括如下步骤 （d): 所述 LED信号灯还提供有一壳体 40， 所述 壳体 40包括一个光分配器 41， 所述光分配器 41为一个带颜色的外透镜， 使所 述 LED信号灯发出的有色光的输出更均匀， 颜色更鲜艳。 在所述方法中， 所形成的 LED信号灯可以是警灯， 航标灯， 船舶航行灯或 楼宇航空障碍灯等。
图 7至图 11所示为根据本发明的一个优选实施例的 LED信号灯。在本实施 例中， 所述 LED信号灯可以为警灯， 其包括多个光源， 和设置在所述多个光源 路径上的对应的多个光处理器 20B。
根据本发明，所述多个光源为多个白光 LED发光体 10B。所述多个白光 LED 发光体 10B可以从市场上购得， 例如可以是市售的单芯片或多芯片型白光 LED 发光体。 所述多个光处理器 20B分别位于所述多个白光 LED发光体 10BB的光 线路径上， 例如， 所述多个光处理器 20BB分别位于所述多个白光 LED发光体 10BB的一侧，将每个所述白光 LED发光体 10BB发出的至少部分白色光过滤成 非白色光， 从而得到非白色光的信号灯， 在本实施例中， 也即是得到非白色光警 灯。 具体地， 所述多个光处理器 20B可以分别将所述多个白光 LED发光体 10B 发出的至少部分白色光过滤成红光， 蓝光， 绿光， 黄光， 紫光等单色光， 从而分 别得到红光， 蓝光， 绿光， 黄光， 紫光的信号灯， 在本实施例中， 所述多个光处 理器 20B可以分别将所述多个白光 LED发光体 10B发出的至少部分白色光过滤 成红光或黄光， 从而可以提供红光或黄光警灯。
本发明的彩色信号灯通过过滤所述多个白光 LED发光体 10B发出的光得到 彩色信号光， 而白光 LED的光源在现有市场上是很容易获得的， 并且相对于直 接用彩色 LED发光体作光源，本发明的 LED信号灯更容易获得较高的光强并且 价格更便宜。 例如一个较高的光通量例如每瓦 150流明 （lm) 的白光 LED光源 已经是很容易在市场上购得， 在经所述光处理器 20B 过滤成彩色光后， 所得到 的彩色光的光强仍然高于单独采用彩色光 LED芯片所得到的彩色光所达到技术 指标值的光强。 例如本实施例中的黄色警灯， 在经过所述光处理器 20B 过滤成 黄色光后， 还剩下大约 60%， 则仍然具有每瓦大约 90流明 （lm) 的黄光， 其仍 然比市场上出售的以黄光 LED发光体作光源得到的黄光的光通量( 50〜60流明） 要高。
本发明中的 "过滤"指的是， 所述多个白光 LED发光体 10B发出的光分别 经过对应的所述多个光处理器 20B 后， 只得到非白色光的预定颜色的单色滤出 光， 所述的预定颜色可以是上述的红色， 蓝色， 绿色， 黄色等。
因为市场上的白光 LED发光体 10B已经可以达到具有较高的光通量， 并且 市场上对白光 LED发光体 10B的研究还在不断进行中， 所以说， 作为光源的白 光 LED发光体 10B的光通量可以继续提高， 而对彩色 LED发光体 10B研究还 较少， 其光通量还处于较低的数值。 从而， 以白光 LED发光体作为光源， 得到 彩色光的信号灯， 高光通量的白光 LED发光体可以直接从市场上购买得到， 从 而其制作过程相对简单。
值得一提的是， 本发明的 LED信号灯包括至少两列所述白光 LED发光体 10B, 例如作为实例， LED信号灯包括三列， 四列， 六列， 八列， 或十二列等的 所述白光 LED发光体 10B, 每一列包括一个或多个白光 LED发光体 10B。 从而 所述多列白光 LED发光体 10B顺次地排列以使所述多列白光 LED发光体 10B 所在的直线相交以形成正三角形、 正四边形、 正六边形、 正八边形、 正十二边形 或其他正多边形。当然，所述多列白光 LED发光体 10B可以不排列成正多边形， 以满足非环射的扇形区域内发光特性的信号灯的需要。每一列也根据需要可以设 置与其他列不同数目的所述白光 LED发光体 10B, 本发明在此方面不受限制， 实际应用时可以根据具体需要进行设置。
可以预料到的是， 提供的所述白光 LED发光体 10B的列越多， 数目越多， 这些白光 LED发光体 10B所产生的光越呈环射状， 投射出去的光的明亮区域和 较暗区域可以最大限度地叠加在一起， 从而可以提供 360° 角度的均匀光照。 本 发明的信号灯可以是环射 LED信号灯， 这里的 "环射"指的是这些白光 LED发 光体 10B被排列成提供沿圆周投射的光，当然优选地，这些白光 LED发光体 10B 被排列成提供沿圆周方向的 360° 角度范围内的投射光。 可选择地， 根据一些具 体的需要， 这些多列的所述白光 LED发光体 10B中的其中某一列或某些列所述 白光 LED发光体 10B被去除， 从而可以根据需要在某一个方向或几个方向上不 提供光照。 也就是说， 本发明的 LED信号灯也可以根据需要提供扇形或半圆形 范围的光照， 例如 180° 或 270° 角度范围的光照。
值得一提的是，这些列所述白光 LED发光体 10B的对应的所述光处理器 20B 可以将所述白光 LED发光体 10B的光过滤成不同的颜色。 例如在六列所述白光 LED发光体 10B中的三列所述白光 LED发光体 10B对应设置有红光光处理器 20B, 而其余三列所述白光 LED发光体 10B对应设置有蓝光光处理器 20B, 所 述 LED信号灯进一步包括有一个控制器 11B, 其可以通过控制电路的开合， 而 使六列所述白光 LED发光体 10B可选择性地打开， 从而分别提供红光或蓝光， 或者可以交替的红光和蓝光。 此时， LED信号灯的外罩可以是透明的。
在本实施例中， 作为一个警灯的实例， 这个警灯包括六列所述白光 LED发 光体 10B, 每列所述白光 LED发光体 10B包括三个所述白光 LED发光体 10B, 每个所述白光 LED发光体 10B的光线路径上设置有一个所述光处理器 20B, 以 将这些白光 LED发光体 10B发出的白色光中的至少部分白色光过滤成黄色光， 从而提供一个黄色警灯。
可以想到的是，在上述黄色警灯的实例中，所述控制器 11B可以控制这些白 光 LED发光体 10B的发光或停止发光， 或者说， 以预定的时间间隔使这些白光 LED发光体 10B发光， 从而呈现黄色闪光的模式， 以提供更强的视觉冲击作用， 从而也提供更加警示的作用。
所述多个光处理器 20B位于所述多个白光 LED发光体 10B的恰当位置上， 优选地， 在本实施例中， 所述多个光处理器 20B 还被巧妙地设计成具有聚光的 作用。 也就是说， 每所述光处理器 20B可以分别将对应的所述白光 LED发光体 10B发出的白光进行径向汇聚， 并且过滤成非白色光后再投射出去。
也就是说， 所述光处理器 20B 在本发明中不仅起到过滤颜色的作用， 还起 到聚光的作用。值得一提的是， 经过聚光后， 投射到适宜区域内的有效光通量得 到提高， 从而增强了信号灯的发光强度。
所述光处理器 20B 可以是各种起到聚光作用的透镜， 如凸透镜， 作为一个 实例， 每个所述光处理器 20B 是一个具有滤光性能的菲涅尔透镜， 从而， 每所 述白光 LED发光体 10B发出的光经所述菲涅尔透镜径向汇聚， 并且过滤成预定 的非白色光后沿着互相平行的方向投射， 从而提高了光照效率， 到达预定区域的 光照具有较高的光通量。
每个所述光处理器 20B分别位于对应的所述白光 LED发光体 10B前方适宜 的位置上， 其尺寸和大小可以根据需要设置， 以达到最大的聚光效果， 并且可以 清除明显的光点。 在这个警灯的实例中， 每个所述光处理器 20B 还提供有至少 一个安装构件 21B,从而每个所述光处理器 20B藉由所述至少一个安装构件 21B 得以安装在对应在所述白光 LED发光体 10B的光线路径上的适宜位置处， 例如 每个所述光处理器 20B通过镙丝固定在对应的所述安装构件 21B上。更具体地， 所述 LED信号灯还包括多个散热装置 12B， 所述至少一个安装构件 21B设置在 对应的所述散热装置 12B和所述光处理器 20B之间以将所述散热装置 12B和所 述光处理器 20B相互连接。 当然， 所述光处理器 20B的安装也可以是采用其他 的方式， 只要能设置到适宜的位置起到聚光和过滤的作用即可。 所述散热装置 12B包括金属散热线路板 121b和连接到所述散热线路板 121B的散热片 122B, 所述散热线路板 121B和所述散热片 122B可以由金属材料制得。如图 10B所示， 每所述白光 LED发光体 10B设置在对应的所述散热线路板 121B上。
更值得一提的是， 如图 10B中所示， 每所述白光 LED发光体 10B设置在由 一个反光面 30B界定的容纳腔 31B中， 所述反光面 30和所述光处理器 20B, 即 可以与光处理器 20B—起将所述白光 LED发光体 10B发出的光进行汇聚。所述 反光面 30B可以是直条形抛物面， 经过所述反光面 30B反射后的光和穿过所述 光处理器 20B的光被汇聚成大致互相平行地投射， 如图 10B中所示， 所述光处 理器 20B与所述反光面 30之间可以留有空隙， 以允许另外一部分光穿过这个间 隙到达所述反光面 30B上， 并不受所述滤光器 20的影响而向外发射出去。
所述反光面 30B可以是一个反光装置的具有反光作用的内表面， 如图 10B 所示， 所述反光面 30B 为抛物形曲面， 其形状可以根据需要设计成最优化的状 态， 以与所述光处理器 20B (菲涅尔透镜） 达到最大的聚光的效果。
值得一提的是， 在本发明的所述白光 LED发光体 10B能够提供足够的光强 时， 所述反光面 30B也可以只起到反光的作用， 而不需要起到汇聚光线的作用。
如图 11所示， 当一个所述白光 LED发光体 10B工作产生白光时，部分白光 到达所述光处理器 20B (菲涅尔透镜）， 然后被所述光处理器 20B (菲涅尔透镜） 会聚并过滤成彩色的单色光， 如图中所示， 所述光处理器 20B (菲涅尔透镜）与 所述白光 LED发光体之间的 S1区域之间， 是从所述白光 LED发光体为中心发 出的沿着径向的白光， 在经过所述光处理器 20B (菲涅尔透镜） 后的 S2区域， 这些沿着径向的白光被汇聚成互相平行的光并且被过滤成非白色的彩色光。
值得一提的是， 根据本发明的这个优选的实施例， 所述 LED信号灯还包括 一个壳体 40B, 所述壳体 40B包括一光分配器 41B, 所述光分配器 41B将所述 白光 LED发光体 10B发出的全部光过滤成想要的颜色的光。 也就是说， 穿过所 述光处理器 20B与所述反光面 30B之间的空隙的部分光到达所述反光面 30B上 被反射后， 穿过所述光分配器 41B 时也被过滤成非白色光。 也即是说， 所述光 处理器 20B与所述光分配器 41B可以将从对应的所述白光 LED发光体 10B发出 的白光过滤成同一种非白色光。 值得一提的是， 所述光分配器 41B 不仅起到滤光的作用， 也可以对输出光 做优化分配，其将所述白光 LED发光体 10B发出的光更均匀地投向适宜的区域。
如图 11所示， 到达 S3区域即被所述反光面 30B反射的光最好也与穿过所 述光处理器 20B的光沿着相同的方向投射， 从而到达光照区域的光强得到增强， 并且被所述反光面 30B反射的光穿过所述光分配器 41B后形成所需颜色的光。
作为一个实例， 在上述警灯中， 所述光分配器 41B 为黄色透镜， 从所述白 光 LED发光体 10B发出的光未到达所述光处理器 20B而是在所述反光面 30上 反射的部分光也被所述黄色透镜过滤，所述光处理器 20B将大部分所述白光 LED 发光体 10B 发出的白光过滤成黄光， 从而提供黄色警灯。 而且在本实施例中， 警灯可以直接用黄色光分配器， 相对于现有技术中以黄光 LED发光体为光源， 无色透明罩为外罩的警灯， 本发明的警灯的外观更具有传统的功能色彩， 更能给 人以警示作用。 值得一提的是， 所述光分配器 41B可以直接用作所述 LED信号 灯的外罩。
在实施为警灯的 LED信号灯的本优选实施例中， 所述壳体 40还包括底座 42， 所述光分配器 41B与所述底座 42B形成一个腔体， 所述多个白光 LED发光 体 10B, 多个光处理器 20B等装置都设置在所述腔体中。 所述壳体 40B顶部还 可包括一个修饰罩 43B, 以给所述 LED信号灯提供其他装饰作用， 也增强美观 效果。 所述壳体 40B还包括必要的电线 44B， 所述电线 44B电性连接到所述控 制器 11B, 以给所述控制器 11B提供电源供应， 从而操作所述 LED信号灯的运 行。所述电线 44B穿过密封板 45B并且通过密封胶 46B固定。所述光分配器 41B 与所述底座 42B通过密封圈 47B得以无缝紧密连接。本发明提供了一种 LED信 号灯， 其相当于包括了一个或多个发光单元， 每个发光单元包括一白光 LED发 光体 10B, —光处理器 20BB, —反光面 30。 所述白光 LED发光体 10B发出白 光， 经过所述光处理器 20B的颜色过滤作用， 以及光处理器 20B和反光面 30B 可以额外提供的聚光作用， 从而得到光照效率提高的彩色信号光。这些发光单元 经过合适的安排， 可以提供沿圆周方向投射的彩色光， 从而提供环射信号光。
值得一提的是， 本发明的光处理器实质上可以是聚光器。 也就是说， 本发明 的 LED信号灯包括至少一 LED发光体， 和设置在所述至少一 LED发光体的光 线路径上的至少一光处理器， 所述光处理器将对应所述的 LED发光体发出的至 少部分光线径向汇聚后投射出去。 更值得一提的是， 在本发明的光处理器实质上可以是聚光器时， 所述 LED 发光体可以是彩色 LED发光体， 从而所述光处理器也可以不起到滤光的作用便 得到彩色光。
所述 LED发光体为白光 LED发光体， 所述光处理器进一步具有滤光作用， 以将所述白光 LED发光体发出的白色光过滤成非白色光的预定颜色的光。
在光处理器是滤光器时， 本发明的 LED信号灯的形成方法包括如下步骤： (a' ) 通过至少一白光 LED发光体 10B受激发而提供白色光； 和
(b' ) 所述白色光中的至少部分所述白色光被过滤成非白色光。
所述步骤 （a' ) 还可以包括步骤 （a.r): 将多个所述白光 LED发光体 10B 排列成多列白光 LED发光体 10B，所述多列白光 LED发光体 10B所在的直线相 交以形成多边形， 从而可以提供环射光。
在上述步骤 （a.l' ) 中， 每列白光 LED发光体 10B包括一个或多个所述白 光 LED发光体 10B。
在上述步骤 （a.r) 中， 所述多列白光 LED发光体 10B所在的直线相交以 形成正多边形， 如正三角形、 正四边形、 正六边形、 正八边形、 或正十二边形等 等。 所述步骤 （b' ) 包括步骤 （b.r): 在每所述白光 LED发光体的光线路径上 设置有一光处理器 20B, 所述光处理器 20B将穿过所述光处理器 20B的所述白 色光过滤成预定颜色的单色光。
在上述步骤 （b.r) 中， 所述光处理器 20B可以为具有滤光性能的菲涅尔透 镜， 所述菲涅尔透镜设置在可以聚光的位置处， 从而所述光处理器 20B 可以起 到滤光和聚光的作用。
在上述步骤（b.r) 中， 所述预定颜色为红色、 蓝色、 黄色、 绿色、 紫色等。 该方法还可包括如下步骤（c' ): 设置一反光面 30B以反射部分所述白色光， 所述部分被反射的所述白色光与被所述光处理器 20B 过滤后的光沿着相同的方 向投射。
在上述步骤（c' ) 中， 所述反光面可以为一个反光装置 31B的抛物面， 或者 是散热装置 12B的内表面。
该方法还可包括如下步骤 （d' ): 所述 LED信号灯还提供有一壳体 40B， 所 述壳体 40B包括一个光分配器 41B, 所述光分配器 41B为一个带颜色的外透镜， 使所述 LED信号灯发出的有色光的输出更均匀， 颜色更鲜艳。。
在所述方法中， 所形成的 LED信号灯可以是警灯， 航标灯， 船舶航行灯或 楼宇航空障碍灯等。
如图 12所示， 根据本发明的第四优选实施例， LED信号灯包括六列所述白 光 LED发光体 10C, 每一列包括一个或多个所述白光 LED发光体 10C, 并且每 个所述 LED白光发光体 10C的光线路径上设置有对应的一个所述滤光器 20C。 从而所述六列白光 LED发光体 10C顺次地排列以使所述多列白光 LED发光体 10C所在的直线相交以形成正六边形。
在本实施例中，所述 LED信号灯还包括一控制模块 60C,所述控制模块 60C 可选择性地控制每列所述白光 LED发光体 10C的开合，以使所述 LED信号灯产 生的光能产生特定的样式。 也就是说， 通过六列所述白光 LED发光体 10C中有 些列发光， 而有些列不发光， 从而产生不同的光照效果。
在一个具体的例子中， 所述六列白光 LED发光体依次闪烁， 从而产生一种 旋转光的效果。更具体地，六列所述 LED发光体包括顺次设置的第一列白光 LED 发光体 101C, 第二列白光 LED发光体 102C, 第三列白光 LED发光体 103C, 第四列白光 LED发光体 104C,第五列白光 LED发光体 105C,和第六列白光 LED 发光体 106C, 所述控制模块 60C先打开所述第一列白光 LED发光体 101C使其 发光， 并被其对应的所述滤光器 20C过滤成想要的颜色， 以提供信号光。 然后， 所述控制模块 60C打开邻近所述第一列白光 LED发光体 101C的所述第二列白 光 LED发光体 102C或者所述第六列白光 LED发光体 106C,并且光闭所述第一 列白光 LED发光体 102。 重复这样的操作， 便可以分别得到顺时针或逆时针依 次闪烁的信号光。 值得一提的是， 所述控制模块 60C可以使这些列白光 LED发 光体中至少有一列所述白光 LED发光体处于打开状态， 从而所得所述 LEC信号 灯所发出的光能持续不断。 所述控制模块 60C使这些列白光 LED发光体中所述 白光 LED发光体发光时可以同时打开邻近的两列所述白光 LED发光体，如所述 第一和第二列所述白光 LED发光体 101C和 102C先同时发光， 以提供 120° 角 度的照明， 然后再依次打开第三和第四列所述白光 LED发光体 103C和 104C, 接着再打开所述第五和第六列所述白光 LED发光体 105C和 106C, 然后重复上 述步骤。 再值得一提的是， 所述控制模块使所述多列白光 LE发光体中选择性地 提供顺次地一个角度范围的信号光照明，这个角度例如可以是 30° ，45° ，60° ， 90° ， 120° 或 180° 。
可以预料到的是， 除了上述顺时针或逆时针依次闪烁的信号光， 可以通过控 制不同列的所述白光 LED发光体发光的顺序， 来得到不同的信号光的样式， 例 如某一列所述白光 LED发光体连续打开关闭几次， 以提供警示信息， 还比如所 述第一列白光 LED发光体 101C与所述第四列白光 LED发光体 104C—起发光 然后关闭， 接着所述第二列白光 LED发光体 102C与所述第五列白光 LED发光 体 105C—起发光然后关闭，、 然后所述第三列白光 LED发光体 103C与所述第 六列白光 LED发光体 106C—起发光然后关闭，如此重复又可以提供不同的信号 光。 还比如， 先打开所述第一列白光 LED 发光体 101C, 然后保持第一列白光 LED发光体 101C处于打开状态并且打开邻近所述第一列白光 LED发光体 101C 的所述第二列白光 LED发光体 102C和所述第六列白光 LED发光体 106C,然后 保持上述三列白光 LED发光体 101C， 102C和 106C处于打开状态并打开所述第 三列白光 LED发光体 103C和所述第五列白光 LED发光体 105C,然后打开所述 第四列白光 LED发光体 104C后再关闭所有白光 LED发光体， 重复上述步骤， 又得到信号光的一种不同的样式。 也就是说， 所述 LEC信号灯通过控制所述白 光 LED发光体 10C所呈现出的不同样式来提供不同的信号。
如图 13所示， 根据上述第四实施例的一个变形实施方式， 所述控制器 60C 先控制所述第一， 二和三列白光 LED发光体 101 C， 102C和 103C先发光， 从 而使所述 LEC信号灯提供半圆形大致 180° 角度的信号光的照明， 然后关闭所 述第一， 二和三列白光 LED发光体 101 C， 102C和 103C, 并打开所述第四， 五和六列白光 LED发光体 104C, 1050和 1060，以提供另外半圆形大致 180° 角度的信号光的照明。 也就是说， 所述控制器 60C可以控制多列所述白光 LED 发光体的打开和关闭。值得一提的是， 传统的彩色光发光体发出的光， 在光线叠 加的区域会出现暗区， 而在本发明中， 如上述变形实施方式中， 所述第一， 二和 三列白光 LED发光体 1 01 C， 102C和 103C发光时，所述第一和第二列白光 LED 发光体 101 C， 102C经滤光器 20C的过滤并且聚光作用之后， 在其光照的叠加 区域不会出现明显暗区， 同样地， 所述第二和第三列白光 LED发光体 101 C， 102C经滤光器 20C的过滤并且聚光作用之后，在其光照的叠加区域也不会出现 明显暗区， 从而使所述第一， 二和三列白光 LED发光体 101 C， 102C和 103C 作为一个光源整体时， 发出的光的强度高并且分布均匀。 如图 14至图 1 6所示是根据本发明的第五个优选实施例的 LED信号灯的结 构示意图。 所述 LED信号灯包括一 LED光源， 所述 LED光源包括一个或多个 LED灯珠 100， 所述 LED信号灯进一步包括一灯罩 200， 以容纳所述一个或多 个 LED灯珠 100。从所述 LED灯珠 100发出来的光即是预定颜色的彩色光， 从 而可以得到本发明所需要的彩色 LED信号灯。 所述灯罩 200的结构可以与上述 优选实施例中 LED信号灯的所述壳体 40类似。
更具体地， 各个所述 LED灯珠 100中封装有一个白光 LED发光体 110， 在 封装完后， 所述白光 LED发光体 110的白光被过滤成所需要的预定颜色的彩色 光。 相应地， 各个所述 LED灯珠 100的封装体 120可以具有过滤的作用， 从而 将穿过所述封装体 120的白色光过滤成所需要的预定颜色的彩色光。
也就是说， 各个所述 LED灯珠 100具有支架、 导线、 散热装置等， 所述白 光 LED发光体 110也可以设置有荧光粉。但是，所述白光 LED发光体 110被封 装成所述 LED灯珠 100后， 发出来的光是所述预定颜色的彩色光。 所述封装体 120的材料可以是环氧树脂、 玻璃材料、 有机硅材料、 聚碳酸脂、 聚甲基丙烯酸 甲脂等。 但是， 相对于现有技术， 本发明的封装体 120 具有滤色的作用。 可以 说， 本发明的所述 LED灯珠， 其实质是白光作为光源， 但是在封装后， 出来的 光是经过滤后形成的彩色光， 这是现有技术中没有预料到的。
值得一提的是， 本发明这个优选实施例的 LED信号灯的其他结构也可以构 造成类似上述优实施例中的结构。 具体地， 各个所述 LED灯珠 100包括至少一 白光 LED发光体 110， 并且所述 LED信号灯在所述 LED灯珠 100的光线路径 中配置有至少一聚光器 130。 所述聚光器 130位于所述 LED灯珠 1 00的恰当位 置上， 具体地， 在本实施例中， 所述多个聚光器 130被巧妙地设计成具有聚光的 作用。 也就是说， 每所述滤光器 130可以分别将对应的所述 LED灯珠 100发出 的白光进行径向汇聚， 并且过滤成非白色光后再投射出去。
值得一提的是， 在本发明的这个优选实施例中， 因为从所述 LED灯珠 100 发出来的光已经是过滤后形成的彩色光， 所以所述聚光器 130 与上述的滤光器 20的区别在于， 所述聚光器 130可以不提供滤色功能， 而只是执行聚光的功能。
所述聚光器 130可以是各种起到聚光作用的透镜结构， 如凸透镜结构， 作为 一个实例， 每个所述聚光器 130可以是一个菲涅尔透镜， 从而， 各个所述 LED 灯珠 100发出的光经所述菲涅尔透镜径向汇聚后沿着互相平行的方向投射，从而 提高了光照效率， 到达预定区域的光照具有较高的光通量。 每一个所述 LED灯 珠 100可以设置有一个对应的所述聚光器 130。 也可以是多个所述聚光器 130形 成一个整体结构， 以对应多个所述 LED灯珠 100。
类似地， 各个所述白光 LED发光体 110设置在由一个反光装置 140界定的 容纳腔中，所述反光装置 140和所述聚光器 130—起将所述白光 LED发光体 110 发出的光进行汇聚。经过所述反光装置 140反射后的光和穿过所述聚光器 130的 光被汇聚成大致互相平行地投射。所述聚光器 130与所述反光装置 140之间可以 留有空隙，以允许另外一部分光穿过这个间隙到达所述反光装置 140上并不受所 述聚光器 130的影响而向外反射出去。 当然这个空隙处， 也可以安装有透明的透 镜。
这样，本实施例的 LED灯珠 100就到了预定颜色的彩色光。将多个所述 LED 灯珠 100排成多列， 每列包括一个或多个所述 LED灯珠 100， 就可以得到照射 区域在不同角度范围或提供不同形状的照射区域的 LED信号灯。
本领域的技术人员应理解，上述描述及附图中所示的本发明的实施例只作为 举例而并不限制本发明。
由此可见， 本发明之目的已经完整并有效的予以实现。本发明的功能及结构 原理已在实施例中予以展示和说明， 在不背离所述原理下， 实施方式可作任意修 改。所以，本发明包括了基于权利要求精神及权利要求范围的所有变形实施方式。

Claims

权 利 要 求 书
1、 一种 LED信号灯， 其特征在于， 包括：
至少一白光 LED发光体， 和
至少一滤光器， 所述至少一滤光器分别设置在所述至少一白光 LED发光体 的光线路径上， 以将所述白光 LED发光体发射的至少部分光线过滤成非白色光 的预定颜色的光。
2、 根据权利要求 1所述的 LED信号灯， 其特征在于， 所述滤光器位于对应的所 述白光 LED发光体的光线路径上的具有聚光作用的位置上， 从而同时起到聚光 作用和允许所述预定颜色的光透过的作用。
3、 根据权利要求 2所述的 LED信号灯， 其特征在于， 所述滤光器包括具有聚光 作用的透镜。
4、 根据权利要求 1、 2或 3所述的 LED信号灯， 其特征在于， 所述 LED信号灯 还包括至少一反光面， 以反射从对应的所述白光 LED发光体发射的部分光线。
5、 根据权利要求 4所述的 LED信号灯， 其特征在于， 所述反光面反射后的光与 所述滤光器过滤后的光沿着相同的方向投射， 从而起到汇聚光线的作用。
6、 根据权利要求 5所述的 LED信号灯， 其特征在于， 所述反光面是一个反光装 置的内表面， 或者每所述白光 LED发光体还设置有一散热装置， 所述反光面是 所述散热装置的内表面。
7、 根据权利要求 6所述的 LED信号灯， 其特征在于， 还包括一壳体， 所述壳体 包括一光分配器， 所述光分配器只允许所述预定颜色的光透过。
8、 根据权利要求 7所述的 LED信号灯， 其特征在于， 所述光分配器进一步起到 分配光线投射方向的作用。
9、 根据权利要求 8所述的 LED信号灯， 其特征在于， 每所述滤光器藉由至少一 安装构件与对应的所述散热线路板或所述光分配器得以安装就位。
10、 根据权利要求 6所述的 LED信号灯， 其特征在于， 所述预定颜色选自红色、 蓝色、 黄色、 绿色、 和紫色中的一种。
11、 根据权利要求 6所述的 LED信号灯， 其特征在于， 所述滤光器包括具有滤 光性能的凸透镜或菲涅尔透镜。
12、 根据权利要求 11所述的 LED信号灯， 其特征在于， 所述 LED信号灯选自 警灯、 航标灯、 航空障碍灯和船舶航行灯中的一种。
13、 根据权利要求 1， 2或 3所述的 LED信号灯， 其特征在于， 所述 LED信号 灯包括多个所述白光 LED发光体， 多个所述白光 LED发光体排列成多列白光 LED发光体， 所述多列白光 LED发光体所在的直线相交以排列成多边形， 每列 白光 LED发光体包括一个或多个所述白光 LED发光体。
14、 根据权利要求 13所述的 LED信号灯， 其特征在于， 所述 LED信号灯还包 括一个控制模块，以选择性地打开或关闭所述多列白光 LED发光体，使所述 LED 信号灯的信号光呈现预定的样式。
15、 根据权利要求 14所述的 LED信号灯， 其特征在于， 所述控制模块顺时针或 逆时针地顺次打开所述多列白光 LED发光体， 以提供一种走马式旋转闪烁光效。
16、 根据权利要求 13所述的 LED信号灯， 其特征在于， 所述控制模块使所述多 列白光 LED发光体中至少有一列所述白光 LED发光体处于打开状态，从而使所 述 LED信号灯产生的信号光保持连续不断。
17、 根据权利要求 13所述的 LED信号灯， 其特征在于， 所述控制模块使所述多 列白光 LED发光体中选择性地提供 30° ， 45° ， 60° ， 90° ， 120° 或 180° 角 度范围的信号光照明。
18、 一种 LED信号灯的形成方法， 其特征在于， 所述方法包括如下步骤：
(a) 通过至少一白光 LED发光体受激发而提供白色光； 和
(b) 所述白色光中的至少部分所述白色光被过滤成非白色光。
19、根据权利要求 18所述的 LED信号灯的形成方法，其特征在于，所述步骤（b) 包括步骤 （b.l ): 在每所述白光 LED发光体的光线路径上设置有一滤光器， 所 述滤光器将穿过所述滤光器的所述白色光过滤成预定颜色的单色光。
20、 根据权利要求 19所述的 LED信号灯的形成方法， 其特征在于， 在上述步骤 (b.l ) 中， 所述滤光器是具有滤光性能的菲涅尔透镜， 所述菲涅尔透镜设置在 具有聚光作用的位置处， 从而所述滤光器起到滤光和聚光的作用。
21、 根据权利要求 20所述的 LED信号灯的形成方法， 其特征在于， 所述预定颜 色为红色、 蓝色、 黄色、 绿色、 或紫色。
22、 根据权利要求 21所述的 LED信号灯的形成方法， 其特征在于， 所述方法还 包括步骤 （c): 设置一反光面以反射部分所述白色光。
23、 根据权利要求 22所述的 LED信号灯的形成方法， 其特征在于， 所述部分被 反射的所述白色光与被所述滤光器过滤后的光沿着相同的方向投射。
24、根据权利要求 18至 23中任一所述的 LED信号灯的形成方法， 其特征在于， 所述方法还包括如下步骤（d): 提供有一壳体， 所述壳体包括一个光分配器， 所 述光分配器是一个带颜色的外透镜，使所述部分被反光面所反射出来的所述白色 光和被所述滤光器过滤后的有色光一起被进一步过滤而形成合适的彩色光。
25、 根据权利要求 24所述的 LED信号灯的形成方法， 其特征在于， 所述光分配 器进一步起到分配光线投射方向的作用， 使所述 LED 信号灯发出的彩色光在 360° 发散方向上的输出更均匀。
26、 一种 LED信号灯， 其特征在于， 包括： 作为光源的彩色 LED灯珠， 所述彩 色 LED灯珠包括至少一白光 LED发光体， 并且所述白光 LED发光体在封装成 所述 LED灯珠后， 产生预定颜色的彩色光， 从而提供所述 LED信号灯所需彩色 光。
27、 如权利要求 26所述的 LED信号灯， 其特征在于， 各个所述白光 LED发光 体设置有一透明封装体， 所述透明封装体为有色透明封装体， 其将所对应的每一 有色透明封装体内所述白光 LED发光体发出的白光过滤成所述预定颜色的彩色 光。
28、 如权利要求 27所述的 LED信号灯， 其特征在于， 还包括至少一聚光器和一 反光装置， 所述聚光器设置在所述 LED芯片的光线路径的适宜位置， 并且所述 聚光器具有聚光作用， 对于所述 LED灯珠发出来的光线， 被所述反光装置反射 后的光与被所述聚光器汇聚后的光沿着相同的方向投射，从而起到汇聚光线的作 用。
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