CN102235614A - Lighting device - Google Patents
Lighting device Download PDFInfo
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- CN102235614A CN102235614A CN2011101046314A CN201110104631A CN102235614A CN 102235614 A CN102235614 A CN 102235614A CN 2011101046314 A CN2011101046314 A CN 2011101046314A CN 201110104631 A CN201110104631 A CN 201110104631A CN 102235614 A CN102235614 A CN 102235614A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S6/00—Lighting devices intended to be free-standing
- F21S6/002—Table lamps, e.g. for ambient lighting
- F21S6/003—Table lamps, e.g. for ambient lighting for task lighting, e.g. for reading or desk work, e.g. angle poise lamps
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- 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]
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- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention provides a lighting device which can reduce brightness without reducing illumination, and comprises a light-guiding body (12) which can guide light (L) from an LED (() to a predetermined direction. The light-guiding body includes a reflecting surface (17) reflecting light from the LED (9) to a predetermined direction and an emitting surface (8) emitting light reflected by the reflecting surface. The reflecting surface (17) is composed by a plurality of reflecting faces (19) which are divided up and down. A step portion (20) is formed by offsetting at the direction of an optical axis (A) in a manner that the lower the reflecting faces (19) are disposed, the more distance the reflecting faces will be away from the LED (9). The light reflected by each reflecting face passes through the emitting surface with an interval of the quantity of each step portion through making each reflecting face to be uncontinuous. As the light of the emitting surface expands through areas and the light sum does not change, the light illumination will not be reduced and the brightness will be declined, enabling the illuminating objects to be easily seen in an operation area.
Description
Technical field
The present invention relates to the lighting device of desk lamp etc.
Background technology
All the time with regard to the known lighting device that desk lamp and so on is arranged.And, in recent years, as this lighting device used light emitting diode (below, abbreviate LED as) as the lighting device of light source (for example, with reference to patent documentation 1: TOHKEMY 2008-123863 communique).Such use the lighting device of LED because to have power consumption little, and can reduce the advantage of lighting device body volume and the trend of increase is arranged.
Such lighting device constitutes the below of the above-mentioned lighting device main body of irradiation.Therefore, such lighting device is being placed under the situation about using on the desk, above-mentioned lighting device main body need be configured in the user the operating area directly over.Yet, like this, if above-mentioned lighting device main body be positioned at the operating area directly over, have the problem of interference of bringing.This problem is for being significant with the strong LED of the directive property of radiating light as the lighting device of light source.
In order to solve such problem, shine downwards with predetermined angle towards the operating area as long as constitute from the position of leaving the user.And,, shown in Figure 18 (a), considered to use light element 100 with reflecting surface 101 in order to realize such luminous intensity distribution.Yet, under the situation of using such light element 100, because by the light L of reflecting surface 101 reflections narrow zone emission, thereby produce too high and so on the problem of brightness from emission part 102.And if the brightness of light L of emission is too high, then strong excessively light L might be difficult to see this irradiation object thing by irradiation object thing (for example photo etc.) reflection.If reduce the luminous quantity of light source 103,, also reduce the problem that has operating area deepening and so on because of illumination though can reduce brightness.In order to address these problems, shown in Figure 18 (b), considered to reduce the angle of inclination of the reflecting surface 201 of light element 200.But, even reduce the angle of above-mentioned reflecting surface 201 like this, can not make the zone of light L emission of emission part 202 too wide, can not reduce brightness so.Have again, also produce narrow and so on the other problem of irradiating angle.
Summary of the invention
Purpose of the present invention solves above problem with regard to being, provides a kind of and can not reduce illumination and can reduce the lighting device of brightness.
The lighting device of the present invention program's 1 record constitutes, the light element that has light source and will guide to predetermined direction from the light of this light source, this light element has the reflecting surface that the light from above-mentioned light source is reflected to predetermined direction, and the emission part that will launch by the light of this reflecting surface reflection, the feature of this lighting device is, above-mentioned reflecting surface is by forming along a plurality of reflection facets of cutting apart from the direction of the opposite side emission portion of emission part one side, these reflection facets are provided with and form end difference away from the mode of above-mentioned light source in the skew of the optical axis A of above-mentioned light source direction more with the reflection facet of above-mentioned emission part one side, and will above-mentionedly respectively reflect facet setting intermittently each other by means of this end difference.
In addition, the lighting device of the present invention program's 2 records is on the basis of scheme 1, it is characterized in that, above-mentioned light element is made of transparent material, and the emission part of above-mentioned light element forms more a plurality of protuberances or recess than above-mentioned light source abreast in the direction with the optical axis intersection of above-mentioned light source.
And then the lighting device of the present invention program 3 record is on each basis of scheme 1 or scheme 2, it is characterized in that, is provided with the scattered light unit that passes through from the light of above-mentioned emission part emission.
Effect of the present invention is as follows.
The lighting device of the present invention program's 1 record is by adopting above structure, pass through above-mentioned emission part across the interval of the amount of above-mentioned each end difference respectively owing to making by the above-mentioned light that respectively reflects facet reflection, thus can make on apparent above-mentioned emission part light pass through area extension.Like this, the area extension that the light of above-mentioned emission part passes through, and the light quantity no change by above-mentioned emission part, thereby can not reduce illumination and can reduce brightness.So, like this, reduce brightness, thereby the irradiation object thing is seen easily by not reducing illumination.
In addition, by constituting above-mentioned light element with transparent material, and the emission part of above-mentioned light element with the direction of the optical axis intersection of above-mentioned light source on form more a plurality of protuberances or recess abreast than above-mentioned light source, since can with the direction of optical axis intersection on the outlet of high light is disperseed, thereby can not reduce illumination and can further reduce brightness.
Have again,, respectively reflect the intermittent light scattering that facet reflects owing to can make, thereby can reduce the illumination spot of operating area by above-mentioned by being provided with the scattered light unit that passes through from the light of above-mentioned emission part emission.
Description of drawings
Fig. 1 is the stereogram of the lighting device of expression first embodiment of the present invention.
Fig. 2 is the front view of lighting device shown in Figure 1.
Fig. 3 is the left side view of lighting device shown in Figure 1.
Fig. 4 is the skeleton diagram of the optical system of lighting device shown in Figure 1.。
Fig. 5 is the key diagram of the light element of lighting device shown in Figure 1.
Fig. 6 is the enlarged drawing of major part of the light element of lighting device shown in Figure 1.
Fig. 7 is the key diagram of the light path of expression lighting device shown in Figure 1.
Fig. 8 is the key diagram of light element of the lighting device of expression second embodiment of the present invention.
Fig. 9 is the key diagram of the light path of expression lighting device shown in Figure 8.
Figure 10 is the key diagram of light element of the lighting device of expression the 3rd embodiment of the present invention.
Figure 11 is the cutaway view along the X-X line of lighting device shown in Figure 10.
Figure 12 is the key diagram of light element of the lighting device of expression the 4th embodiment of the present invention.
Figure 13 is the cutaway view along the Y-Y line of lighting device shown in Figure 12.
Figure 14 is the key diagram of light element of the lighting device of expression the 5th embodiment of the present invention.
Figure 15 is the cutaway view along the Z-Z line of lighting device shown in Figure 14.
Figure 16 is the skeleton diagram of optical system of the lighting device of expression the 6th embodiment of the present invention.
Figure 17 is the key diagram of the light path of expression lighting device shown in Figure 16.
Figure 18 is used for the key diagram relatively with the present invention.
Among the figure:
1-desk lamp (lighting device), 9,21-light emitting diode (light source), 12,22,31,41,51-light conductor (light element), 14-scattered light body (scattered light unit), 17,24,34,44,54, the 67-reflecting surface, 18,25,35,45, the 55-surface of emission (emission part), 19,26,36,46,56,69-reflects facet, 20,27,37,47,57, the 70-end difference, 38, the 58-protuberance, 48, the 59-recess, the 61-light element, 65-light exit (emission part), A-optical axis, L-light.
The specific embodiment
Below, according to Fig. 1 to Fig. 7 embodiments of the present invention are described.Label 1 is the desk lamp as an example of lighting device.The structure of this desk lamp 1 comprises: bottom 2; Be fixed on the cylindrical portion 3 on this bottom 2; The arm 4 that can be provided with versatilely with respect to this cylindrical portion 3; The head 5 that can be provided with versatilely with respect to this arm 4; And the light fixture 6 that can be provided with versatilely with respect to this head 5.And, be provided with operating portion 7 and display part 8 in the face side of above-mentioned cylindrical portion 3.In addition, aforesaid operations portion 7 is made of main switch 7A and by-pass cock 7B, 7C.In addition, above-mentioned display part 8 is provided with a plurality of demonstrations LED (not shown).
Optical system to above-mentioned light fixture 6 is described in detail as follows.Above-mentioned light fixture 6 has the illuminating LED 9 as light source.This LED9 can be considered as the flat light source of small size.That is, the light L from this LED9 radiation has part that becomes directional light and the part that becomes diffused light.In addition, though omitted in Fig. 4 and Fig. 7, above-mentioned LED9 is arranged side by side into row on metal substrate 10.And this metal substrate 10 is connected with radiator 11.In addition, the radiation side at above-mentioned LED9 is provided with light conductor 12.And the top of this light conductor 12 is covered by secondary reflector 13.Have, the aftermentioned surface of emission 18 of above-mentioned light conductor 12 is scattered light body 14 and covers again.
Above-mentioned light conductor 12 is described in detail as follows.The transparent acrylic resin of these light conductor 12 usefulness forms.And the structure of above-mentioned light conductor 12 has: the plane of incidence 15 relative with above-mentioned LED9; To be adjusted into the flexure plane 16 of directional light from the diffused light the light L of above-mentioned LED9 radiation; With the reflecting surface 17 of light L to predetermined direction reflection; And will be transmitted into the surface of emission 18 outside the above-mentioned light conductor 12 by the light L of this reflecting surface 17 reflections.In addition, above-mentioned reflecting surface 17 has at above-below direction, promptly along a plurality of reflection facets 19 of cutting apart from the direction of the surface of emission 18 an opposite side emission face 18 1 sides.In addition, these reflection facets 19 utilize end difference 20 to be provided with intermittently to form.In addition, above-mentioned reflection facet 19 with the above-mentioned surface of emission 18 1 sides more away from the mode of above-mentioned LED9 because above-mentioned end difference 20 and being offset in the optical axis A of above-mentioned LED9 direction.Therefore, above-mentioned reflecting surface 17 utilizes a plurality of above-mentioned reflection facets 19 and end difference 20 to form step-like.And as shown in Figure 7, the above-mentioned facet 19 that respectively reflects forms the plane inclined shape respectively, is adjusted into parallel light L and reflects abreast to predetermined direction thereby make.
Above-mentioned secondary reflector 13 constitutes the upper surface that covers above-mentioned light conductor 12, the upside flexure plane 16A of promptly above-mentioned light conductor 12 and reflecting surface 17.In addition, formation such as above-mentioned secondary reflector 13 usefulness synthetic resin are so that its lower surface is identical shape with the upper surface of above-mentioned light conductor 12.In addition, the lower surface in above-mentioned secondary reflector 13 is formed with reflecting layer (not shown) by electroplating to wait.
The transparent synthetic resin of above-mentioned scattered light body 14 usefulness constitutes, and forms its surface thicker.Thus, constitute passed through above-mentioned scattered light body 14 luminous energy by thick surface scattering.
Below, the effect of present embodiment is described.Above-mentioned desk lamp 1 is connected with not shown AC power in advance.To the above-mentioned LED9 supply capability that is arranged on the above-mentioned light fixture 6, this LED9 is luminous by operating above-mentioned main switch 7A for the user.In addition, the user regulates the electric power of supplying with to above-mentioned LED9 by operation by- pass cock 7B, 7C interimly, and the brightness of above-mentioned LED9 is changed.In addition, the luminance of above-mentioned LED9 is shown with the bright lamp numerical table of demonstration with LED in above-mentioned display part 8.That is, above-mentioned LED9 is under the strongest luminous state, and above-mentioned demonstration is with the whole bright lamps of LED, and above-mentioned LED9 is under the most weak luminous state, and above-mentioned demonstration is with LED bright lamp only.
In addition, move to above-mentioned radiator 11 by means of said metal substrates 10, distribute from this radiator 11 by the heat that above-mentioned LED9 energising is produced.
Enter above-mentioned light conductor 12 from the light L of above-mentioned LED9 radiation from the above-mentioned plane of incidence 15.Then, from the light L of above-mentioned LED9 radiation, carrying out primary event by the reflecting surface 17 of above-mentioned light conductor 12 for the part of directional light.In addition, from the light L of above-mentioned LED9 radiation, carrying out primary event by the flexure plane 16 of above-mentioned light conductor 12 and be adjusted into, carrying out secondary reflection by the reflecting surface 17 of above-mentioned light conductor 12 with after optical axis A is parallel for the part of diffused light.Then, all downward by the light L of above-mentioned reflecting surface 17 reflections with predetermined angle, launch from above-mentioned light conductor 12 by the above-mentioned surface of emission 18.In addition, as mentioned above, utilize above-mentioned end difference 20, be provided with intermittently by the length amount that makes the above-mentioned optical axis A direction that respectively reflects the above-mentioned end difference 20 of facet 19 skew, by the above-mentioned light L of facet 19 reflections that respectively reflects also across forming interrupted shape (being striated) at interval.Therefore, the zone of passing through of the light L of the above-mentioned surface of emission 18 seems to broaden.On the other hand, the total amount of the light L by the above-mentioned surface of emission 18 is constant.Therefore, above-mentioned desk lamp 1 can not reduce from the illumination of the light L of above-mentioned LED9 radiation, and can reduce brightness.Like this, reduce brightness, thereby can not see this irradiation object thing at an easy rate by the strong reflection of the irradiation object produce third contact of a total solar or lunar eclipse L that is in the operating area that utilizes above-mentioned desk lamp 1 irradiation by the illumination that does not reduce light L.
In addition, after in above-mentioned light conductor 12, repeating repeatedly to reflect, the possibility of generation from the light L of the above-mentioned surface of emission 18 surface launching in addition arranged.Yet even light L is from the surface launching in addition of the above-mentioned surface of emission 18 like this, light L also returns in the above-mentioned light conductor 12 by above-mentioned secondary reflector 13 reflections.And the light L that returns this light conductor 12 is finally still from the above-mentioned surface of emission 18 emissions.
Have again, by above-mentioned scattered light body 14 time, carry out scattering by the surface that is formed at this scattered light body 14 small concavo-convex from the light L of the above-mentioned surface of emission 18 emissions.Therefore, also homogenized across the light L that is interrupted shape at interval when having passed through the above-mentioned surface of emission 18 because of passing through above-mentioned scattered light body 14.Thereby, can reduce the illumination spot of operating area.
As mentioned above, with regard to regard to the desk lamp 1 of lighting device of the present invention, as having to the structure of the light conductor 12 of the light element of predetermined direction guiding: will be from the light L of above-mentioned LED9 reflecting surface 17 to the predetermined direction reflection from light L as the LED9 of light source; And as the surface of emission 18 of the emission part that will launch by the light L of this reflecting surface 17 reflections, above-mentioned reflecting surface 17 is by at above-below direction, promptly form along a plurality of reflection facets 19 of cutting apart from the direction of the surface of emission 18 an opposite side emission face 18 sides, these reflection facets 19 are provided with and form end difference 20 away from the mode of above-mentioned LED9 in the optical axis direction skew of above-mentioned LED9 more with the reflection facet 19 of the above-mentioned surface of emission 18 sides, by utilizing these end differences 20 to make the above-mentioned facet 19 that respectively reflects be interrupted state each other, thereby make by the above-mentioned light L that respectively reflects facet 19 reflection separately from each other across the interval of the amount of above-mentioned each end difference 20 by the above-mentioned surface of emission 18, thereby expanded on apparent the above-mentioned surface of emission 18 light L pass through the zone, and make total amount no change by the light L of the above-mentioned surface of emission 18, therefore can not reduce the illumination of this light L and reduce brightness, make the irradiation object thing of operating area be easy to see.
In addition, desk lamp of the present invention 1 is owing to can carry out scattering by making to make by the above-mentioned intermittent light L that respectively reflects facet 19 reflections by the scattered light body 14 as the scattered light unit from the light L of the above-mentioned surface of emission 18 emissions, thereby reduce the illumination spot of operating area, thereby can make the irradiation object thing of operating area be easier to see.
Below, according to Fig. 8 and Fig. 9 second embodiment of the present invention is described.And, for omitting its explanation with the common part of above-mentioned first embodiment.This second embodiment is the situation that the LED21 as light source is considered as point source of light.
The transparent acrylic resin of light conductor 22 usefulness of present embodiment forms.And the structure of above-mentioned light conductor 22 has: the plane of incidence 23 relative with above-mentioned LED21; Will be from the reflecting surface 24 of the direct sunshine the light L of above-mentioned LED21 radiation to predetermined direction reflection; And will be transmitted into the surface of emission 25 outside the above-mentioned light conductor 22 by the light L of this reflecting surface 24 reflections.In addition, above-mentioned reflecting surface 24 has at above-below direction, promptly along a plurality of reflection facets 26 of cutting apart from the direction of the surface of emission 25 an opposite side emission face 25 1 sides.In addition, these reflection facets 26 utilize end difference 27 to be provided with intermittently to form.In addition, above-mentioned reflection facet 26 with the above-mentioned surface of emission 25 1 sides more away from the mode of above-mentioned LED21 because above-mentioned end difference 27 and being offset in the optical axis A of above-mentioned LED21 direction.Therefore, above-mentioned reflecting surface 24 utilizes a plurality of above-mentioned reflection facets 26 and end difference 27 to form step-like.And as shown in Figure 9, the above-mentioned facet 26 that respectively reflects forms the concave curved surface shape with respect to above-mentioned LED21 respectively, thereby the direct sunshine from the light L of above-mentioned LED21 radiation is reflected abreast to predetermined direction.
In addition, the difference of present embodiment and above-mentioned first embodiment is, the former will reflect by above-mentioned reflecting surface 21 abreast from the light L that a bit spreads of above-mentioned LED21, and the latter will be reflected abreast by above-mentioned reflecting surface 17 after will being adjusted into directional light from the light L of above-mentioned LED9 radiation, and action effect does not in addition have big difference.Therefore, omission is to the explanation of present embodiment effect.
Below, according to Figure 10 and Figure 11 the 3rd embodiment of the present invention is described.And, for omitting its explanation with the common part of the respective embodiments described above.In the present embodiment, as shown in figure 11, be provided with a plurality of LED9, and with these LED9 uniformly-spaced to be arranged in row.
The transparent acrylic resin of light conductor 31 usefulness of present embodiment forms.And the structure of above-mentioned light conductor 31 has: the plane of incidence 32 relative with above-mentioned LED9; To be adjusted into the flexure plane 33 of directional light from the diffused light the light L of above-mentioned LED9 radiation; With the reflecting surface 34 of light L to predetermined direction reflection; And will be transmitted into the surface of emission 35 outside the above-mentioned light conductor 31 by the light L of this reflecting surface 34 reflections.In addition, above-mentioned reflecting surface 34 has at above-below direction, promptly along a plurality of reflection facets 36 of cutting apart from the direction of the surface of emission 35 an opposite side emission face 35 1 sides.In addition, these reflection facets 36 utilize end difference 37 to be provided with intermittently to form.In addition, above-mentioned reflection facet 36 with the above-mentioned surface of emission 35 1 sides more away from the mode of above-mentioned LED9 since above-mentioned end difference 37 be offset in the optical axis A of above-mentioned LED9 direction.Therefore, above-mentioned reflecting surface 34 utilizes a plurality of above-mentioned reflection facets 36 and end difference 37 to form step-like.And the above-mentioned facet 36 that respectively reflects forms the plane inclined shape respectively, is adjusted into parallel light L and reflects abreast to predetermined direction thereby make.
In addition, on the surface of emission 35 of above-mentioned light conductor 31, a plurality of protuberances 38 have been formed with above-mentioned light conductor 31.These protuberances 38 form more longways along the optical axis A of above-mentioned LED9, and form abreast in the direction with optical axis A quadrature.And it is more that raised part 38 forms than above-mentioned LED9.
Below, the effect of present embodiment is described.Enter above-mentioned light conductor 31 from the light L of above-mentioned LED9 radiation from the above-mentioned plane of incidence 32.Then, from the light L of above-mentioned LED9 radiation, carrying out primary event by the reflecting surface 34 of above-mentioned light conductor 31 for the part of directional light.In addition, from the light L of above-mentioned LED9 radiation, carrying out primary event by the flexure plane 33 of above-mentioned light conductor 31 and be adjusted into, carrying out secondary reflection by the reflecting surface 34 of above-mentioned light conductor 31 with after optical axis A is parallel for the part of diffused light.Then, all downward by the light L of above-mentioned reflecting surface 34 reflections with predetermined angle, launch from above-mentioned light conductor 31 by the above-mentioned surface of emission 35.In addition, as mentioned above, be provided with intermittently by utilizing above-mentioned end difference 37 to make the length amount of the above-mentioned optical axis A direction that respectively reflects above-mentioned each end difference 37 of facet 36 skew, by the above-mentioned light L of facet 36 reflections that respectively reflects also across forming interrupted shape (being striated) at interval.Therefore, the zone of passing through of the light L of the above-mentioned surface of emission 35 seems to broaden.On the other hand, the total amount of the light L by the above-mentioned surface of emission 35 is constant.Therefore, the desk lamp of present embodiment can not reduce from the illumination of the light L of LED9 radiation, and can reduce brightness.Like this, reduce brightness, thereby can not see this irradiation object thing at an easy rate by the strong reflection of the irradiation object produce third contact of a total solar or lunar eclipse L that is in the operating area that utilizes above-mentioned desk lamp irradiation by the illumination that does not reduce light L.
In addition, by the above-mentioned surface of emission 35 time, as shown in figure 11, by launching after above-mentioned each protuberance 38 refraction or reflection, light L launches from above-mentioned each protuberance 38 by the light L of above-mentioned reflecting surface 34 reflections.That is, the outlet with respect to the light L of an above-mentioned LED9 is separated into the low a plurality of outlets of brightness from a high outlet of brightness.Thus, owing to the illumination that can not reduce from the light L of above-mentioned LED9 radiation makes brightness lower, thereby can make that the irradiation object thing that is in the operating area of being shone by above-mentioned desk lamp is easier to be seen.
Have again, from the light L of the above-mentioned surface of emission 35 emissions because of carrying out scattering by the surface that is formed at this scattered light body small concavo-convex by the scattered light body.Therefore, when having passed through the above-mentioned surface of emission 35 in optical axis A direction across being interrupted shape at interval and having the light L of hot spot also homogenized because of passing through above-mentioned scattered light body in direction with optical axis A quadrature.Thereby, can reduce the illumination spot of operating area.
As mentioned above, with regard to regard to the desk lamp of lighting device of the present invention, as having to the structure of the light conductor 31 of the light element of predetermined direction guiding: will be from the light L of above-mentioned LED9 reflecting surface 34 to the predetermined direction reflection from light L as the LED9 of light source; And as the surface of emission 35 of the emission part that will launch by the light L of this reflecting surface 34 reflections, above-mentioned reflecting surface 34 is by at above-below direction, promptly form along a plurality of reflection facets 36 of cutting apart from the direction of the surface of emission 35 an opposite side emission face 35 sides, these reflection facets 36 are provided with and form end difference 37 away from the mode of above-mentioned LED9 in the skew of the optical axis A of above-mentioned LED9 direction more with the reflection facet 36 of the above-mentioned surface of emission 35 sides, by utilizing these end differences 37 to make the above-mentioned facet 36 that respectively reflects be interrupted state each other, thereby make by the above-mentioned light L that respectively reflects facet 36 reflection separately from each other across the interval of the amount of above-mentioned each end difference 37 by the above-mentioned surface of emission 35, thereby expanded on apparent the above-mentioned surface of emission 35 light L pass through the zone, and make total amount no change by the light L of the above-mentioned surface of emission 35, therefore can not reduce the illumination of this light L and reduce brightness, can make the irradiation object thing of operating area be easy to see.
In addition, with regard to desk lamp of the present invention, because the transparent acrylic resin of above-mentioned light conductor 31 usefulness constitutes, and, the surface of emission 35 of above-mentioned light conductor 31 with the direction of the optical axis A quadrature of above-mentioned LED9 on form more a large amount of protuberances 38 abreast than above-mentioned LED9, since can with the direction of optical axis A quadrature on the outlet of high light is disperseed, thereby can not reduce the illumination of light L and further reduce brightness, can make the irradiation object thing of operating area be easier to see.
Have again, with regard to desk lamp of the present invention, owing to making by the above-mentioned intermittent light L that respectively reflects facet 36 reflections by the scattered light body as the scattered light unit, the light L from the above-mentioned surface of emission 35 emissions carries out scattering, and owing to the direction of optical axis A quadrature on make the outlet of high light disperse to make the light L scattering that produces hot spot by means of above-mentioned each protuberance 38, can reduce the illumination spot of operating area, thereby can make the irradiation object thing of operating area be easier to see.
Below, according to Figure 12 and Figure 13 the 4th embodiment of the present invention is described.And, for omitting its explanation with the common part of the respective embodiments described above.In the present embodiment, as shown in figure 13, be provided with a plurality of LED9, and with these LED9 uniformly-spaced to be arranged in row.
The transparent acrylic resin of light conductor 41 usefulness of present embodiment forms.And the structure of above-mentioned light conductor 41 has: the plane of incidence 42 relative with above-mentioned LED9; To be adjusted into the flexure plane 43 of directional light from the diffused light the light L of above-mentioned LED9 radiation; With the reflecting surface 44 of light L to predetermined direction reflection; And will be transmitted into the surface of emission 45 outside the above-mentioned light conductor 41 by the light L of this reflecting surface 44 reflections.In addition, above-mentioned reflecting surface 44 has at above-below direction, promptly along a plurality of reflection facets 46 of cutting apart from the direction of the surface of emission 45 an opposite side emission face 45 1 sides.In addition, these reflection facets 46 utilize end difference 47 to be provided with intermittently to form.In addition, above-mentioned reflection facet 46 with the above-mentioned surface of emission 45 1 sides more away from the mode of above-mentioned LED9 because above-mentioned end difference 47 and being offset in the optical axis A of above-mentioned LED9 direction.Therefore, above-mentioned reflecting surface 44 utilizes a plurality of above-mentioned reflection facets 46 and end difference 47 to form step-like.And the above-mentioned facet 46 that respectively reflects forms the plane inclined shape respectively, is adjusted into parallel light L and reflects abreast to predetermined direction thereby make.
In addition, on the surface of emission 45 of above-mentioned light conductor 41, a plurality of recesses 48 have been formed with above-mentioned light conductor 41.These recesses 48 form more longways along the optical axis A of above-mentioned LED9, and form abreast in the direction with optical axis A quadrature.And it is more that above-mentioned recess 48 forms than above-mentioned LED9.
Below, the effect of present embodiment is described.Enter above-mentioned light conductor 41 from the light L of above-mentioned LED9 radiation from the above-mentioned plane of incidence 42.Then, from the light L of above-mentioned LED9 radiation, carrying out primary event by the reflecting surface 44 of above-mentioned light conductor 41 for the part of directional light.In addition, from the light L of above-mentioned LED9 radiation, carrying out primary event by the flexure plane 43 of above-mentioned light conductor 41 and be adjusted into, carrying out secondary reflection by the reflecting surface 44 of above-mentioned light conductor 41 with after optical axis A is parallel for the part of diffused light.Then, all downward by the light L of above-mentioned reflecting surface 44 reflections with predetermined angle, launch from above-mentioned light conductor 41 by the above-mentioned surface of emission 45.In addition, as mentioned above, sharp be provided with intermittently, also form interrupted shape (being striated) across the interval by the above-mentioned light L that respectively reflects facet 46 reflections by the length amount that makes the above-mentioned optical axis A direction that respectively reflects above-mentioned each end difference 47 of facet 46 skews with above-mentioned end difference 47.Therefore, the zone of passing through of the light L of the above-mentioned surface of emission 45 seems to broaden.On the other hand, the total amount of the light L by the above-mentioned surface of emission 45 is constant.Therefore, the desk lamp of present embodiment can not reduce from the illumination of the light L of above-mentioned LED9 radiation, and can reduce brightness.Like this, reduce brightness, thereby can not see this irradiation object thing at an easy rate by the strong reflection of the irradiation object produce third contact of a total solar or lunar eclipse L that is in the operating area that utilizes above-mentioned desk lamp irradiation by the illumination that does not reduce light L.
In addition, by the above-mentioned surface of emission 45 time, as shown in figure 13, by launching after 48 refractions of above-mentioned each recess or reflection, light L is from 48 of above-mentioned each recesses, promptly from relatively launching for protruding position by the light L of above-mentioned reflecting surface 44 reflections.That is, the outlet with respect to the light L of an above-mentioned LED9 is separated into the low a plurality of outlets of brightness from a high outlet of brightness.Thus, owing to the illumination that can not reduce from the light L of above-mentioned LED9 radiation makes brightness lower, thereby can make that the irradiation object thing that is in the operating area of being shone by above-mentioned desk lamp is easier to be seen.
Have again, from the light L of the above-mentioned surface of emission 45 emissions because of carrying out scattering by the surface that is formed at this scattered light body small concavo-convex by the scattered light body.Therefore, when having passed through the above-mentioned surface of emission 45 in optical axis A direction across being interrupted shape at interval and having the light L of hot spot also homogenized because of passing through above-mentioned scattered light body in direction with optical axis A quadrature.Thereby, can reduce the illumination spot of operating area.
As mentioned above, with regard to regard to the desk lamp of lighting device of the present invention, as having to the structure of the light conductor 41 of the light element of predetermined direction guiding: will be from the light L of above-mentioned LED9 reflecting surface 44 to the predetermined direction reflection from light L as the LED9 of light source; And as the surface of emission 46 of the emission part that will launch by the light L of this reflecting surface 44 reflections, above-mentioned reflecting surface 44 is by at above-below direction, promptly form along a plurality of reflection facets 46 of cutting apart from the direction of the surface of emission 45 an opposite side emission face 45 sides, these reflection facets 46 are provided with and form end difference 47 away from the mode of above-mentioned LED9 in the skew of the optical axis A of above-mentioned LED9 direction more with the reflection facet 46 of the above-mentioned surface of emission 45 sides, by utilizing these end differences 47 to make the above-mentioned facet 46 that respectively reflects be interrupted state each other, thereby make by the above-mentioned light L that respectively reflects facet 46 reflection separately from each other across the interval of the amount of above-mentioned each end difference 47 by the above-mentioned surface of emission 45, thereby expanded on apparent the above-mentioned surface of emission 45 light L pass through the zone, and make total amount no change by the light L of the above-mentioned surface of emission 45, therefore can not reduce the illumination of this light L and reduce brightness, can make the irradiation object thing of operating area be easy to see.
In addition, with regard to desk lamp of the present invention, because the transparent acrylic resin of above-mentioned light conductor 41 usefulness constitutes, and, the surface of emission 45 of above-mentioned light conductor 41 with the direction of the optical axis A quadrature of above-mentioned LED9 on form more a large amount of recesses 48 abreast than above-mentioned LED9, since can with the direction of optical axis A quadrature on the outlet of high light is disperseed, thereby can not reduce the illumination of light L and further reduce brightness, can make the irradiation object thing of operating area be easier to see.
Have again, with regard to desk lamp of the present invention, owing to making by the above-mentioned intermittent light L that respectively reflects facet 46 reflections by the scattered light body as the scattered light unit, the light L from the above-mentioned surface of emission 45 emissions carries out scattering, and owing to the direction of optical axis A quadrature on make the outlet of high light disperse to make the light L scattering that produces hot spot by above-mentioned each recess 48, can reduce the illumination spot of operating area, thereby can make the irradiation object thing of operating area be easier to see.
Below, according to Figure 14 and Figure 15 the 5th embodiment of the present invention is described.And, for omitting its explanation with the common part of the respective embodiments described above.In the present embodiment, as shown in figure 15, be provided with a plurality of LED9, and with these LED9 uniformly-spaced to be arranged in row.
The transparent acrylic resin of light conductor 51 usefulness of present embodiment forms.And the structure of above-mentioned light conductor 51 has: the plane of incidence 52 relative with above-mentioned LED9; To be adjusted into the flexure plane 53 of directional light from the diffused light the light L of above-mentioned LED9 radiation; With the reflecting surface 54 of light L to predetermined direction reflection; And will be transmitted into the surface of emission 55 outside the above-mentioned light conductor 51 by the light L of this reflecting surface 54 reflections.In addition, above-mentioned reflecting surface 54 has at above-below direction, promptly along a plurality of reflection facets 56 of cutting apart from the direction of the surface of emission 55 an opposite side emission face 55 1 sides.In addition, these reflection facets 56 utilize end difference 57 to be provided with intermittently to form.In addition, above-mentioned reflection facet 56 with the above-mentioned surface of emission 55 1 sides more away from the mode of above-mentioned LED9 because above-mentioned end difference 57 and being offset in the optical axis A of above-mentioned LED9 direction.Therefore, above-mentioned reflecting surface 54 utilizes a plurality of above-mentioned reflection facets 56 and end difference 57 to form step-like.And the above-mentioned facet 56 that respectively reflects forms the plane inclined shape respectively, is adjusted into parallel light L and reflects abreast to predetermined direction thereby make.
In addition, on the surface of emission 55 of above-mentioned light conductor 51, a plurality of protuberances 58 and recess 59 have been formed with above-mentioned light conductor 51.These protuberances 58 and recess 59 form more longways along the optical axis A of above-mentioned LED9 respectively, and alternately form side by side in the direction with optical axis A quadrature.And it is more that raised part 58 and recess 59 form than above-mentioned LED9 respectively.
Below, the effect of present embodiment is described.Enter above-mentioned light conductor 51 from the light L of above-mentioned LED9 radiation from the above-mentioned plane of incidence 52.Then, from the light L of above-mentioned LED9 radiation, carrying out primary event by the reflecting surface 54 of above-mentioned light conductor 51 for the part of directional light.In addition, from the light L of above-mentioned LED9 radiation, carrying out primary event by the flexure plane 53 of above-mentioned light conductor 51 and be adjusted into, carrying out secondary reflection by the reflecting surface 54 of above-mentioned light conductor 51 with after optical axis A is parallel for the part of diffused light.Then, all downward by the light L of above-mentioned reflecting surface 54 reflections with predetermined angle, launch from above-mentioned light conductor 51 by the above-mentioned surface of emission 55.In addition, as mentioned above, be provided with intermittently by utilizing above-mentioned end difference 57 to make the length amount of the above-mentioned optical axis A direction that respectively reflects above-mentioned each end difference 57 of facet 56 skew, by the above-mentioned light L of facet 56 reflections that respectively reflects also across forming interrupted shape (being striated) at interval.Therefore, the zone of passing through of the light L of the above-mentioned surface of emission 55 seems to broaden.On the other hand, the total amount of the light L by the above-mentioned surface of emission 55 is constant.Therefore, the desk lamp of present embodiment can not reduce from the illumination of the light L of above-mentioned LED9 radiation, and can reduce brightness.Like this, reduce brightness, thereby can not see this irradiation object thing at an easy rate by the strong reflection of the irradiation object produce third contact of a total solar or lunar eclipse L that is in the operating area that utilizes above-mentioned desk lamp irradiation by the illumination that does not reduce light L.
In addition, by the above-mentioned surface of emission 55 time, as shown in figure 15, by by launching after above-mentioned each protuberance 58 refraction or the reflection, light L launches from above-mentioned each protuberance 58 by the light L of above-mentioned reflecting surface 54 reflections.That is, the outlet with respect to the light L of an above-mentioned LED9 is separated into the low a plurality of outlets of brightness from a high outlet of brightness.Thus, owing to the illumination that can not reduce from the light L of above-mentioned LED9 radiation makes brightness lower, thereby can make that the irradiation object thing that is in the operating area of being shone by above-mentioned desk lamp is easier to be seen.
Have again, from the light L of the above-mentioned surface of emission 55 emissions because of carrying out scattering by the surface that is formed at this scattered light body small concavo-convex by the scattered light body.Therefore, when having passed through the above-mentioned surface of emission 55 in optical axis A direction across being interrupted shape at interval and having the light L of hot spot also homogenized because of passing through above-mentioned scattered light body in direction with optical axis A quadrature.Thereby, can reduce the illumination spot of operating area.
As mentioned above, with regard to regard to the desk lamp of lighting device of the present invention, as having to the structure of the light conductor 51 of the light element of predetermined direction guiding: will be from the light L of above-mentioned LED9 reflecting surface 54 to the predetermined direction reflection from light L as the LED9 of light source; And as the surface of emission 55 of the emission part that will launch by the light L of this reflecting surface 54 reflections, above-mentioned reflecting surface 54 is by at above-below direction, promptly form along a plurality of reflection facets 56 of cutting apart from the direction of the surface of emission 55 an opposite side emission face 55 sides, these reflection facets 56 are provided with and form end difference 57 away from the mode of above-mentioned LED9 in the skew of the optical axis A of above-mentioned LED9 direction more with the reflection facet 56 of the above-mentioned surface of emission 55 sides, by utilizing these end differences 57 to make the above-mentioned facet 56 that respectively reflects be interrupted state each other, thereby make by the above-mentioned light L that respectively reflects facet 56 reflection separately from each other across the interval of the amount of above-mentioned each end difference 57 by the above-mentioned surface of emission 55, thereby expanded on apparent the above-mentioned surface of emission 55 light L pass through the zone, and make total amount no change by the light L of the above-mentioned surface of emission 55, therefore can not reduce the illumination of this light L and reduce brightness, can make the irradiation object thing of operating area be easy to see.
In addition, with regard to desk lamp of the present invention, because the transparent acrylic resin of above-mentioned light conductor 51 usefulness constitutes, and, the surface of emission 55 of above-mentioned light conductor 51 with the direction of the optical axis A quadrature of above-mentioned LED9 on alternately form more a large amount of protuberance 58 and recess 59 side by side than above-mentioned LED9, since can with the direction of optical axis A quadrature on the outlet of high light is disperseed, thereby can not reduce the illumination of light L and further reduce brightness, can make the irradiation object thing of operating area be easier to see.
Have again, with regard to desk lamp of the present invention, owing to making by the above-mentioned intermittent light L that respectively reflects facet 56 reflections by the scattered light body as the scattered light unit, the light L from the above-mentioned surface of emission 55 emissions carries out scattering, and owing to the direction of optical axis A quadrature on make the outlet of high light disperse to make the light L scattering that produces hot spot by means of above-mentioned each protuberance 58, can reduce the illumination spot of operating area, thereby can make the irradiation object thing of operating area be easier to see.
Below, according to Figure 16 and Figure 17 the 6th embodiment of the present invention is described.And, for omitting its explanation with the common part of the respective embodiments described above.
The light fixture of present embodiment has the illuminating LED 9 as light source.This LED9 can regard the flat light source of small size as.That is, have for the part of directional light and be the part of diffused light from the light L of this LED9 radiation.In addition, though omitted in Figure 16 and Figure 17, above-mentioned LED9 is provided with in the mode that forms a line on metal substrate 10.And this metal substrate 10 is connected with radiator 11.In addition, the radiation side at above-mentioned LED9 is provided with light element 61.And the aftermentioned light exit 65 of this light element 61 is scattered light body 14 and covers.
Below, above-mentioned light element 61 is elaborated.This light element 61 is formed by last reflector 62 and following reflector 63.These reflector 62,63 usefulness synthetic resin form, and form reflecting layer (not shown) by electroplating etc. on the facing surfaces at least mutually of these reflectors 62,63.And above-mentioned light element 61 has: the rearward end light entrance 64 each other that is arranged on above-mentioned each reflector 62,63; And as the light exit 65 that is arranged on the leading section emission part each other of above-mentioned each reflector 62,63.In addition, the above-mentioned structure that goes up reflector 62 has: will be adjusted into the flexure plane 66 of directional light from the light that spreads upward the light L of above-mentioned LED9 radiation; And with the reflecting surface 67 of light L to predetermined direction reflection.In addition, the above-mentioned structure of reflector 63 down has: will be adjusted into the flexure plane 68 of directional light from the light that spreads the light L of above-mentioned LED9 radiation downwards.In addition, above-mentioned reflecting surface 67 has at above-below direction, i.e. a plurality of reflection facets 69 of cutting apart along the direction that exports 65 1 sides from light exit 65 opposite lateral light.In addition, these reflection facets 69 utilize end difference 70 to be provided with intermittently to form.In addition, above-mentioned reflection facet 69 with above-mentioned light exit 65 1 sides more away from the mode of above-mentioned LED9 because above-mentioned end difference 70 and being offset in the optical axis A of above-mentioned LED9 direction.Therefore, above-mentioned reflecting surface 67 utilizes a plurality of above-mentioned reflection facets 69 and end difference 70 to form step-like.And as shown in figure 17, the above-mentioned facet 69 that respectively reflects forms the plane inclined shape respectively, is adjusted into parallel light L and reflects abreast to predetermined direction thereby make.
The structure of above-mentioned scattered light body 14 is that it constitutes with transparent synthetic resin, and its surface is formed asperities.Thus, having passed through the light of above-mentioned scattered light body 14 can be by thick surface scattering.
Below, the effect of present embodiment is described.Enter above-mentioned light element 61 from the light L of above-mentioned LED9 radiation from above-mentioned light entrance 64.Then, from the light L of above-mentioned LED9 radiation for the part of directional light by above-mentioned light element 61 on the reflecting surface 67 of reflector 62 carry out primary event.In addition, from the light L of above-mentioned LED9 radiation for the light of upwards diffusion by above-mentioned light element 61 on the flexure plane 66 of reflector 62 carry out primary event and be adjusted into after optical axis A is parallel, carry out secondary reflection by the reflecting surface 67 of the last reflector 62 of above-mentioned light element 61.Have again, from the light L of above-mentioned LED9 radiation, carrying out primary event by the flexure plane 68 of the following reflector 63 of above-mentioned light element 61 and be adjusted into, carrying out secondary reflection by the reflecting surface 67 of the last reflector 62 of above-mentioned light element 61 with after optical axis A is parallel for the light of diffusion downwards.Then, all downward by the light L of above-mentioned reflecting surface 67 reflections with predetermined angle, launch from above-mentioned light element 61 at above-mentioned light exit 65.In addition, as mentioned above, be provided with intermittently by utilizing above-mentioned end difference 70 to make the length amount of the above-mentioned optical axis A direction that respectively reflects above-mentioned each end difference 70 of facet 69 skew, by the above-mentioned light L of facet 69 reflections that respectively reflects also across forming interrupted shape (being striated) at interval.Therefore, the zone of passing through of the light L of above-mentioned light exit 65 seems to broaden.On the other hand, the total amount of the light L by above-mentioned light exit 65 is constant.Therefore, above-mentioned desk lamp can not reduce from the illumination of the light L of above-mentioned LED9 radiation, and can reduce brightness.Like this, reduce brightness, thereby can not see this irradiation object thing at an easy rate by the strong reflection of the irradiation object produce third contact of a total solar or lunar eclipse L that is in the operating area that utilizes above-mentioned desk lamp irradiation by the illumination that does not reduce light L.
Have again, by above-mentioned scattered light body 14 time, carry out scattering by the surface that is formed at this scattered light body 14 small concavo-convex from the light L of above-mentioned light exit 65 emissions.Therefore, also homogenized across the light L that is interrupted shape at interval when having passed through above-mentioned light exit 65 because of passing through above-mentioned scattered light body 14.Thereby, can reduce the illumination spot of operating area.
As mentioned above, with regard to regard to the desk lamp of lighting device of the present invention, as having to the structure of the light element 61 of predetermined direction guiding: will be from the light L of above-mentioned LED9 reflecting surface 67 to the predetermined direction reflection from light L as the LED9 of light source; And as the light exit 65 of the emission part that will launch by the light L of this reflecting surface 67 reflections, above-mentioned reflecting surface 67 is by at above-below direction, promptly a plurality of reflection facets 69 of cutting apart along the direction that exports 65 sides from light exit 65 opposite lateral light form, these reflection facets 69 are provided with and form end difference 70 away from the mode of above-mentioned LED9 in the skew of the optical axis A of above-mentioned LED9 direction more with the reflection facet 69 of above-mentioned light exit 65 sides, by utilizing these end differences 70 to make the above-mentioned facet 69 that respectively reflects be interrupted state each other, thereby make by the above-mentioned light L that respectively reflects facet 69 reflection separately from each other across the interval of the amount of above-mentioned each end difference 70 by above-mentioned light exit 65, thereby expanded on apparent above-mentioned light exit 65 light L pass through the zone, and make total amount no change by the light L of above-mentioned light exit 65, therefore can not reduce the illumination of this light L and reduce brightness, can make the irradiation object thing of operating area be easy to see.
In addition, with regard to desk lamp of the present invention, owing to making by the above-mentioned intermittent light L that respectively reflects facet 69 reflections by the scattered light body 14 as the scattered light unit, the light L from above-mentioned light exit 65 emissions carries out scattering, can reduce the illumination spot of operating area, thereby can make the irradiation object thing of operating area be easier to see.
In addition, the present invention is not limited to above embodiment, in the scope of aim of the present invention various embodiments can be arranged.For example, in the respective embodiments described above,, also can be the optical axis (optical axis of broad sense) of the non-direct sunshine after reflection or refraction though optical axis refers to the optical axis (optical axis of narrow sense) from the direct sunshine of light source.In addition, also can be the combination of the respective embodiments described above.
Claims (3)
1. lighting device, constitute, the light element that has light source and will guide to predetermined direction from the light of this light source, this light element have with from the light of above-mentioned light source to the reflecting surface of predetermined direction reflection and the emission part that will launch by the light of this reflecting surface reflection, this lighting device is characterised in that
Above-mentioned reflecting surface is by forming along a plurality of reflection facets of cutting apart from the direction of the opposite side emission portion of emission part one side, these reflection facets are provided with and form end difference away from the mode of above-mentioned light source in the optical axis direction skew of above-mentioned light source more with the reflection facet of above-mentioned emission part one side, and will above-mentionedly respectively reflect facet setting intermittently each other by means of this end difference.
2. lighting device according to claim 1 is characterized in that,
Above-mentioned light element is made of transparent material, and the emission part of above-mentioned light element forms more a plurality of protuberances or recess than above-mentioned light source abreast in the direction with the optical axis intersection of above-mentioned light source.
3. lighting device according to claim 1 and 2 is characterized in that,
Be provided with the scattered light unit that passes through from the light of above-mentioned emission part emission.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-101308 | 2010-04-26 | ||
| JP2010101308A JP5588217B2 (en) | 2010-04-26 | 2010-04-26 | Lighting device |
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| Publication Number | Publication Date |
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| CN102235614A true CN102235614A (en) | 2011-11-09 |
| CN102235614B CN102235614B (en) | 2015-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110104631.4A Expired - Fee Related CN102235614B (en) | 2010-04-26 | 2011-04-22 | Lighting device |
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| JP (1) | JP5588217B2 (en) |
| CN (1) | CN102235614B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014079159A1 (en) * | 2012-11-26 | 2014-05-30 | Chen Shaofan | Led lamp based on secondary optical light distribution of light propagation component |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200475866Y1 (en) * | 2013-08-12 | 2015-01-07 | 단국대학교 산학협력단 | An angle control type skirt module |
| CN103925512A (en) * | 2014-03-28 | 2014-07-16 | 中山市隆华塑料电子有限公司 | Light-source-side bevel hidden desk lamp |
| KR102628018B1 (en) * | 2016-08-30 | 2024-01-24 | 엘지이노텍 주식회사 | Lighting module and lighting apparatus |
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| JPS5936511U (en) * | 1982-08-31 | 1984-03-07 | 松下電工株式会社 | lighting ceiling device |
| JPH09281338A (en) * | 1996-03-19 | 1997-10-31 | Chukyo Koden Kofun Yugenkoshi | Back light system of liquid crystal display panel |
| US20060147151A1 (en) * | 2004-12-30 | 2006-07-06 | Mario Wanninger | Lighting device comprising a plurality of semiconductor light sources |
| CN101446405A (en) * | 2007-11-27 | 2009-06-03 | 美蓓亚株式会社 | Spread illuminating apparatus |
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| JP2570558Y2 (en) * | 1990-09-05 | 1998-05-06 | 三菱電機株式会社 | Desk lighting equipment |
| JP4239563B2 (en) * | 2001-11-16 | 2009-03-18 | 豊田合成株式会社 | Light emitting diode and LED light |
| JP4687905B2 (en) * | 2006-07-26 | 2011-05-25 | スタンレー電気株式会社 | LED lighting fixtures |
| KR101565934B1 (en) * | 2008-05-23 | 2015-11-06 | 삼성디스플레이 주식회사 | Back-light assembly and display apparatus having the back-light assembly |
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2010
- 2010-04-26 JP JP2010101308A patent/JP5588217B2/en not_active Expired - Fee Related
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5936511U (en) * | 1982-08-31 | 1984-03-07 | 松下電工株式会社 | lighting ceiling device |
| JPH09281338A (en) * | 1996-03-19 | 1997-10-31 | Chukyo Koden Kofun Yugenkoshi | Back light system of liquid crystal display panel |
| US20060147151A1 (en) * | 2004-12-30 | 2006-07-06 | Mario Wanninger | Lighting device comprising a plurality of semiconductor light sources |
| CN101446405A (en) * | 2007-11-27 | 2009-06-03 | 美蓓亚株式会社 | Spread illuminating apparatus |
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| WO2014079159A1 (en) * | 2012-11-26 | 2014-05-30 | Chen Shaofan | Led lamp based on secondary optical light distribution of light propagation component |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102235614B (en) | 2015-09-30 |
| JP2011233308A (en) | 2011-11-17 |
| JP5588217B2 (en) | 2014-09-10 |
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