CN102878479A - Double-faced light-emitting diode (LED) cabinet lamp - Google Patents
Double-faced light-emitting diode (LED) cabinet lamp Download PDFInfo
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- CN102878479A CN102878479A CN2012102986336A CN201210298633A CN102878479A CN 102878479 A CN102878479 A CN 102878479A CN 2012102986336 A CN2012102986336 A CN 2012102986336A CN 201210298633 A CN201210298633 A CN 201210298633A CN 102878479 A CN102878479 A CN 102878479A
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Abstract
The invention discloses a double-faced light-emitting diode (LED) cabinet lamp, which comprises a lamp body, two lamp banks and light transmitting plates, wherein the light transmitting plates cover the LED lamp banks; an included angle is formed between the surface of the outer side of a circuit board of each LED lamp bank and a transverse plate of the lamp body; the light transmitting plates are triangular prisms; a vertex angle between the surfaces of the outer side and the inner side of each triangular prism is an acute angle; the surface of the outer side of each triangular prism is parallel to or flush with a surface of a shelf plate of a cabinet; and the vertex angle of each triangular prism is close to a front plate of the lamp body. By the structure, light rays emitted from the LED lamp banks are integrally deflected towards the direction of the shelf plate of the cabinet after being refracted through the triangular prisms, luminous area out of the cabinet is reduced, a phenomenon that the light rays are directly emitted to the eyes of users is prevented, luminous area towards the direction of the shelf plate of the cabinet is increased, and shadow area is reduced.
Description
Technical field
The present invention relates to a kind of lighting device of cupboard, especially relate to a kind of dual surface LED cabinet lamp.
Background technology
Cupboard is the daily apparatus for stored goods, is used for storage kitchen tools, wardrobe for the storage clothing such as cabinet.Bright cupboard brings warm living atmosphere to people.Therefore, be subject to people's favor once going on the market with the cupboard of light source.Existing light fixture for cupboard is a kind of dual surface LED cabinet lamp as shown in Figure 1, comprises that lamp body, two groups of LED lamp groups and printing opacity are dull and stereotyped; Lamp body is made into integration by aluminium alloy, lamp body comprises transverse slat, front and rear panels, the rear side middle part of header board is connected on one side with transverse slat, the middle part, front side of rear plate is connected with the another side of transverse slat, the Inlaid strip that the rear side middle part of rear plate is provided with, the rear side two ends of header board offer corresponding cell body with the two ends, front side of rear plate; LED lamp group is comprised of a plurality of LED particles and wiring board, the LED particle is installed on the outer surface of wiring board, wiring board is electrically connected with power supply by electric pressure converter, wherein one group of LED lamp group be fixedly installed on transverse slat above, be arranged on wiring board inboard downward-sloping of the top LED lamp group of transverse slat, another group LED lamp group be fixedly installed on transverse slat below, the inboard of wiring board that is arranged on the following LED lamp group of transverse slat is inclined upwardly, and the outer surface of wiring board and transverse slat form 20 ° angle; Printing opacity is dull and stereotyped to be arranged in parallel with the transverse slat of lamp body and the shelf of cabinet, the dull and stereotyped surface that covers LED lamp group of printing opacity, and the both sides of printing opacity flat board are stuck in the cell body; The shelf arranged outside has holddown groove, and Inlaid strip cooperates with holddown groove lamp body and shelf are fixed into one; Illuminate the above and below of shelf after the refraction of light by the printing opacity flat board that LED lamp group is sent.But owing to plate or cabinet shelf front end behind LED particle self-luminous scope and the lamp body block, form respectively shadow region A and shadow region B in the above and below of shelf; Because the outer surface of wiring board becomes 20 ° with the angle of transverse slat, as shown in Figure 2, the actual range of exposures of LED particle is 10 ° ~ 130 °, and therefore, the scope in shadow region is at least 0 ° ~ 10 °; On the other hand, during the access thing, eyes viewing area of living in is generally 120 ° ~ 150 ° from cupboard, and the part of this viewing area is subject to the direct projection of the light that the LED particle sends, and easily causes eyes to be wounded by stabbing.
Summary of the invention
Technical problem to be solved by this invention provides a kind of dual surface LED cabinet lamp, and this dual surface LED cabinet lamp has been subdued the shelf top of cupboard and the shadow region of below, and can not stab eyes.
The present invention solves the problems of the technologies described above the technical scheme that adopts: a kind of dual surface LED cabinet lamp, comprise lamp body, two groups of LED lamp groups and cover the light-passing board of described LED lamp group outside, between the outer surface of the wiring board of described LED lamp group and the transverse slat of described lamp body angle is arranged; Described light-passing board is prism, and the outer surface of described prism and the drift angle between the inner surface are acute angle; The outer surface of described prism is parallel with the plate face of the shelf of cupboard or flush the header board of the close described lamp body of described drift angle.
Compared with prior art, the invention has the advantages that: light-passing board is prism, the outer surface of prism and the drift angle between the inner surface are acute angle, drift angle is near the header board of lamp body, the light that LED lamp group is sent had both reduced the light-emitting zone outside cupboard by whole shelf direction deflection to cupboard after the refraction of prism, had prevented the direct projection of light to eyes, increased again to the light-emitting zone of the shelf direction of cupboard, subdued the shadow region.
As preferably, the outer surface of described prism and the angle between the inner surface are 10 ° ~ 40 °; The angle of the angle between the transverse slat of the outer surface of the wiring board of the angle of the drift angle of prism and LED lamp group and lamp body is suitable, thus angle and the intensity of emergent ray adjusted.
As preferably, the outer surface of described prism and the drift angle between the inner surface are 25 ° ~ 30 °, and the inner surface of described prism is parallel with the outer surface of the wiring board of described LED lamp group; The outer surface of the wiring board of the inner surface of prism and LED lamp group is be arranged in parallel, reduced the difficulty that lamp body is made.
As preferably, the angle between the outer surface of the wiring board of described LED lamp group and the transverse slat of described lamp body angle be 30 °; Drift angle is that 30 ° prism comparison is convenient.
As improvement, the end of described lamp body is provided with end cap, is provided with the shading type inductive switch on the lateral surface of described end cap; Described shading type inductive switch is connected with electric pressure converter, the negative pole of described light source module is connected with the negative pole of described electric pressure converter by described shading type inductive switch, also be provided with normal open switch on the lateral surface of described end cap, the negative pole of described light source module also is connected with the negative pole of described electric pressure converter by normal open switch; In the situation that normal open switch is opened, just can control the switch of this dual surface LED cabinet lamp by the switch of cabinet door, easy to operate; And behind the closed normal open switch, can the kitchen range top below the shelf be thrown light in the situation that the cabinet door is closed still.
As improvement, the two ends of the inner panel of the described lamp body formation edge that extends back, described edge matches with the shelf of cupboard; Edge matches with the cupboard shelf lamp body and shelf is assembled into one, can not destroy the intensity of shelf.
Description of drawings
Fig. 1 is the effect schematic diagram of prior art.
Fig. 2 is the index path of prior art.
Fig. 3 is schematic perspective view of the present invention.
Fig. 4 is the cutaway view of lamp body part of the present invention.
Fig. 5 is the index path of the LED particle above the transverse slat of the embodiment of the invention 1.
Fig. 6 is the index path of the LED particle below the transverse slat of the embodiment of the invention 1.
Fig. 7 is circuit diagram of the present invention.
Fig. 8 is that light of the present invention is by the refraction principle figure of prism.
Shown in the figure: 1, lamp body, 1.1, header board, 1.2, transverse slat, 1.3, rear plate, 1.4, edge, 2, LED lamp group, 2.1, the outer surface of the wiring board of LED lamp group, 3, light-passing board, 3.1, outer surface, 3.2, inner surface, 3.3, prism.
The specific embodiment
Embodiment is described in further detail the present invention below in conjunction with accompanying drawing.
Embodiment 1: as shown in Figure 3 and Figure 4, this preferred embodiment is a kind of dual surface LED cabinet lamp, comprise lamp body 1, two groups of LED lamp groups 2 and cover the light-passing board 3 on LED lamp group 2 surfaces, wherein, lamp body 1 is made into integration by aluminium section bar, lamp body 1 comprises header board 1.1, transverse slat 1.2 and rear plate 1.3, header board 1.1 rear sides middle part is connected with one side of transverse slat 1.2, middle part, rear plate 1.3 front sides is connected with the another side of transverse slat 1.2, header board 1.1 rear sides and rear plate 1.3 front sides are provided with corresponding holddown groove, be provided with corresponding locating slot near the end of header board 1.1 rear sides and rear plate 1.3 front sides, transverse slat 1.2 is parallel with the plate face of the shelf of cupboard; The wiring board of LED lamp group 2 inserts in the holddown groove, and the outer surface 2.1 of wiring board is 30 ° with the angle theta of transverse slat 1.2; Light-passing board 3 is prism, the outer surface 3.1 of prism and the vertex angle theta of inner surface 3.2 ' be 30 °, the outer surface 3.1 of prism is parallel with transverse slat 1.2, inner surface 3.2 is parallel with the outer surface 2.1 of the wiring board of LED lamp group, the prism 3.3 of prism is vertical with inner surface 3.2, the both sides of prism are provided with raised line, and raised line inserts in the locating slot prism and lamp body are fixed; The two ends of rear plate 1.3 extend back and form edge 1.4, and edge 1.4 matches with the front end of the shelf of cupboard dual surface LED cabinet lamp and the fixing one that forms of shelf.
In the present embodiment, the outer surface 3.1 of prism flushes with the plate face of the shelf of cupboard, so that can not blocked by plate 1.3 behind the lamp body 1 through the emergent light after the prism refraction; The inner surface 3.2 of prism be arranged in parallel with the outer surface 2.1 of the wiring board of LED lamp group 2, so that the holddown groove of lamp body 1 and locating slot arrange is relative simple, has reduced the difficulty that lamp body 1 is made; Prism is the right angle prism of 30 ° of drift angles, is made by the milky acrylic board, and refractive index is 1.3, this prism since the short right-angle side in its cross section be hypotenuse half, comparison is convenient.
As shown in Figure 5 and Figure 6, the light that the LED particle sends is whole shelf direction skew to cupboard after the refraction of prism, both reduced the light output to cabinet the place ahead, the incident light that the LED particle sends is 106 ° through the maximum illumination angle delta after the refraction of prism, neither can the direct projection eyes, subdued simultaneously again the shadow region.
In the present embodiment, the lamp body both sides are provided with end cap, be provided with the shading type inductive switch on one of them end cap, the shading type inductive switch comprises infrared photoelectric switch U1, triode Q1, triode Q2, resistance R 1, resistance R 2, resistance R 3, resistance R 4 and resistance R 5.The circuit diagram of this dual surface LED cabinet lamp as shown in Figure 7, the positive pole anodal and with electric pressure converter output (not shown) of infrared photoelectric switch U1 luminous component is connected, and the negative pole of the luminous component of infrared photoelectric switch U1 is connected with the negative pole of electric pressure converter output by resistance R 1; The positive pole of infrared photoelectric switch U1 receiving unit is connected with the positive pole of electric pressure converter output, the negative pole of infrared photoelectric switch U1 receiving unit is connected with the end that an end of resistance R 2 is connected with resistance R, the other end of resistance R 2 is connected with the negative pole of electric pressure converter output, the other end of resistance R 3 is connected with the colelctor electrode of triode Q1, and the emitter stage of triode Q1 is connected with the negative pole of electric pressure converter output; One end of resistance R 4 is connected with the positive pole of electric pressure converter output, and the other end of resistance R 4 and the colelctor electrode of triode Q1 are connected base stage and are connected with triode Q2, and the emitter stage of triode Q2 is connected with the negative pole of electric pressure converter output; One end of resistance R 5 is connected with the positive pole of electric pressure converter output, and the other end of resistance R 5 is connected with the colelctor electrode of triode Q2.Wherein, resistance R 1 is by the resistance series connection of three 220R.In addition, LED lamp group is comprised of a plurality of parallel circuits, and each connection circuit is composed in series by the resistance of 3 LED particles and 1 180R; The positive pole of LED lamp group is connected with the positive pole of electric pressure converter output, and the negative pole of LED lamp group is connected with the colelctor electrode of triode Q2; The negative pole of LED lamp group also is connected with the negative pole of electric pressure converter output by normal open switch K.
The specific works principle of circuit is: when the cabinet door is closed, the luminous component transmitted signal of infrared photoelectric switch U1, infrared photoelectric switch U1 receiving unit is received conducting behind the signal, so that triode Q1 conducting, and triode Q2 cut-off, this moment, LED lamp group and electric pressure converter output did not consist of the loop, and LED lamp group is not luminous; When the cabinet door is opened, the luminous component transmitted signal of infrared photoelectric switch U1, infrared photoelectric switch U1 receiving unit is received not conducting behind the signal, so that triode Q1 cut-off, and triode Q2 conducting, this moment, LED lamp group and electric pressure converter output consisted of the loop, and LED lamp group is luminous.But, when natural daylight is sufficient, open the cabinet door, the conducting owing to receiving infrared ray in the natural daylight of infrared photoelectric switch U1 acceptance division branch, so that triode Q1 conducting, and triode Q2 cut-off, this moment, LED lamp group and electric pressure converter output did not consist of the loop, and LED lamp group is not luminous, thereby saved electric power.And when normal open switch K closed up, LED lamp group consisted of the loop by normal open switch K and electric pressure converter output, and this moment, no matter the unlatching of cabinet door was still closed, and LED lamp group is all luminous to provide illumination.
Embodiment 2: the present embodiment and embodiment 1 dual surface LED cabinet lamp are basic identical, comprise lamp body 1, two groups of LED lamp groups 2 and with the light-passing board 3 of LED lamp group 2 relative set, light-passing board 3 is prism, prism is made by acrylic board.Its difference is: the parallel (not shown) of plate face of the outer surface 3.1 of prism and the shelf of cupboard, and the distance between the outer surface 3.1 of two prisms is 2 ~ 3mm with the gap of the thickness of shelf, the refractive index of prism is 1.4, the vertex angle theta of prism ' be 25 ° of (not shown)s, the angle theta between the horizontal version 1.2 of the outer surface 2.1 of the wiring board of LED lamp group 2 and lamp body 1 is 25 ° of (not shown)s.This moment, the lighting angle of LED particle was 5 ° ~ 125 °, be 0 ° ~ 109 ° through the range of exposures after the refraction of prism, can the direct projection eyes, but because the blocking of the rear plate 1.3 of lamp body 1, actual range of exposures is 5 ° ~ 109 °, has subdued the part shadow region.
Embodiment 3: the dual surface LED cabinet lamp of the present embodiment and embodiment 1 is basic identical, comprise lamp body 1, two groups of LED lamp groups 2 and with the light-passing board 3 of LED lamp group 2 relative set, light-passing board 3 is prism, the refractive index of prism is 1.3.Its difference is: the vertex angle theta of prism ' be 10 ° of (not shown)s, the angle theta between the outer surface 2.1 of the wiring board of LED lamp group 2 and the transverse slat 1.2 of lamp body 1 is 45 ° of (not shown)s.This moment, the lighting angle of LED particle be-15 ° ~ 105 °, and light can the direct projection eyes, and the range of exposures that light passes through after the refraction of prism is 0 ° ~ 100 °, had subdued the shadow region.
Embodiment 4: the dual surface LED cabinet lamp of the present embodiment and embodiment 1 and embodiment 3 is basic identical, comprise lamp body 1, two groups of LED lamp groups 2 and with the light-passing board 3 of LED lamp group 2 relative set, light-passing board 3 is prism, the refractive index of prism is 1.3.Its difference is: the vertex angle theta of prism ' be 40 ° of (not shown)s, the angle theta between the horizontal version 1.2 of the outer surface 2.1 of the wiring board of LED lamp group 2 and lamp body 1 is 15 ° of (not shown)s.This moment, the lighting angle of LED particle was 15 ° ~ 135 °, was 0 ° ~ 104 ° through the range of exposures after the refraction of prism, neither can the direct projection eyes, subdued again the shadow region.
General thought of the present invention as shown in Figure 8, light through the backward drift angle of refraction of prism to edge run-out, and α '=β+θ ' as shown in Figure 8, sin α/sin β=sin β '/sin α '=L can obtain: β '=arcsin (Lsin (θ '+arcsin ((sin α)/L))); When β '=90 °, when also being α=arcsin (Lsin (arcsin (1/L)-θ ')), the refracted ray of the incident ray of this angle is the incident ray of the critical angle of prism; Wherein, α is incidence angle, and β is the refraction angle of incidence angle, and β ' is the angle of emergence, and α ' is the incidence angle of the angle of emergence, and sin is SIN function, and arcsin is arcsin function, and L is the refractive index of prism.Simultaneously because the larger emergent ray intensity of the angle of emergence of light is less, and the intensity of the mid portion of the light that the LED particle sends is greater than the intensity of both sides, therefore need to be according to the angle of the angle theta between the transverse slat 1.2 of the outer surface of the wiring board of LED lamp group 2 and lamp body 1, adjust the vertex angle theta of prism ' angle, so that the mid portion of the light that the incident ray of critical angle sends at the LED particle, thereby obviously subdue the shadow region.
In addition, among above-mentioned each embodiment, prism also can be made by other light transmissive materials.
Claims (6)
1. dual surface LED cabinet lamp, comprise lamp body (1), two groups of LED lamp groups (2) and cover the surperficial light-passing board (3) of described LED lamp group (2), between the outer surface (2.1) of the wiring board of described LED lamp group (2) and the transverse slat (1.2) of described lamp body (1) angle is arranged; It is characterized in that: described light-passing board (3) is prism, the vertex angle theta between the outer surface of described prism (3.1) and the inner surface (3.2) ' be acute angle; The outer surface of described prism (3.1) is parallel with the plate face of the shelf of cupboard or flush described vertex angle theta ' near the header board (1.1) of described lamp body (1).
2. dual surface LED cabinet lamp according to claim 1 is characterized in that: the vertex angle theta between the outer surface of described prism (3.1) and the inner surface (3.2) ' be 10 ° ~ 40 °.
3. dual surface LED cabinet lamp according to claim 2, it is characterized in that: the vertex angle theta between the outer surface of described prism (3.1) and the inner surface (3.2) ' be 25 ° ~ 30 °, the inner surface of described prism (3.2) is parallel with the outer surface (2.1) of the wiring board of described LED lamp group (2).
4. dual surface LED cabinet lamp according to claim 3 is characterized in that: the vertex angle theta between the outer surface of described prism (3.1) and the inner surface (3.2) ' be 30 °.
5. each described dual surface LED cabinet lamp according to claim 1 ~ 4, it is characterized in that: described lamp body (1) one end is provided with end cap, is provided with shading type inductive switch and normal open switch on the described end cap; The positive pole of described LED lamp group is connected with the positive pole of electric pressure converter output, the negative pole of described LED lamp group (2) is connected with the negative electricity of described electric pressure converter by described shading type inductive switch, and the negative pole of described LED lamp group (2) also is connected with the negative electricity of described electric pressure converter by described normal open switch.
6. dual surface LED cabinet lamp according to claim 5 is characterized in that: the two ends of the rear plate (1.3) of described lamp body (1) extend back and form edge (1.4), and described edge (1.4) matches with the shelf of cupboard.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210298633.6A CN102878479B (en) | 2012-08-21 | 2012-08-21 | Double-faced light-emitting diode (LED) cabinet lamp |
| CN201410154813.6A CN103968299B (en) | 2012-08-21 | 2012-08-21 | Dual surface LED cabinet lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210298633.6A CN102878479B (en) | 2012-08-21 | 2012-08-21 | Double-faced light-emitting diode (LED) cabinet lamp |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410154813.6A Division CN103968299B (en) | 2012-08-21 | 2012-08-21 | Dual surface LED cabinet lamp |
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| Publication Number | Publication Date |
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| CN102878479A true CN102878479A (en) | 2013-01-16 |
| CN102878479B CN102878479B (en) | 2014-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210298633.6A Active CN102878479B (en) | 2012-08-21 | 2012-08-21 | Double-faced light-emitting diode (LED) cabinet lamp |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111192865A (en) * | 2020-03-05 | 2020-05-22 | 江苏壹光科技有限公司 | Double-sided light-emitting leadless OLED module |
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| US6578978B1 (en) * | 1999-06-07 | 2003-06-17 | Specialty Equipment Companies, Inc. | Display case having a mullion with recessed light fixtures |
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| GB2462351A (en) * | 2008-07-25 | 2010-02-10 | Hussmann Corp | A mullion with a reflective surface for a refrigerated display cabinet |
| CN201561328U (en) * | 2009-06-26 | 2010-08-25 | 唐丹天 | LED point-like outline lamp |
| CN202101048U (en) * | 2011-04-22 | 2012-01-04 | 高福海 | Infrared inductive LED wardrobe lamp |
| CN202691821U (en) * | 2012-08-21 | 2013-01-23 | 宁波欧琳厨具有限公司 | Double-sized light emitting diode (LED) cabinet lamp |
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2012
- 2012-08-21 CN CN201210298633.6A patent/CN102878479B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6578978B1 (en) * | 1999-06-07 | 2003-06-17 | Specialty Equipment Companies, Inc. | Display case having a mullion with recessed light fixtures |
| US20050265019A1 (en) * | 2004-05-26 | 2005-12-01 | Gelcore Llc | LED lighting systems for product display cases |
| US20090207592A1 (en) * | 2008-02-19 | 2009-08-20 | Sanyo Electric Co., Ltd. | Showcase |
| GB2462351A (en) * | 2008-07-25 | 2010-02-10 | Hussmann Corp | A mullion with a reflective surface for a refrigerated display cabinet |
| CN201293240Y (en) * | 2008-11-04 | 2009-08-19 | 潘定国 | Cabinet lamp made of constant section triangle directional prism circular reflecting plate and lamp strip |
| CN201561328U (en) * | 2009-06-26 | 2010-08-25 | 唐丹天 | LED point-like outline lamp |
| CN202101048U (en) * | 2011-04-22 | 2012-01-04 | 高福海 | Infrared inductive LED wardrobe lamp |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111192865A (en) * | 2020-03-05 | 2020-05-22 | 江苏壹光科技有限公司 | Double-sided light-emitting leadless OLED module |
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