CN107304980A - Lighting device and large-scale showcase - Google Patents
Lighting device and large-scale showcase Download PDFInfo
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- CN107304980A CN107304980A CN201710236028.9A CN201710236028A CN107304980A CN 107304980 A CN107304980 A CN 107304980A CN 201710236028 A CN201710236028 A CN 201710236028A CN 107304980 A CN107304980 A CN 107304980A
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- Prior art keywords
- mentioned
- light
- light source
- lighting device
- optical axis
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/20—Light sources comprising attachment means
-
- 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
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
-
- 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
- F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
-
- 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
- F21V5/02—Refractors for light sources of prismatic shape
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
-
- 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]
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Freezers Or Refrigerated Showcases (AREA)
Abstract
A kind of cheaper lighting device and large-scale showcase of the manufacturing cost that can be brought to desired direction progress distribution controls and realization by the increase of part number of packages are provided.Possess：Light source (71), irradiation light；And the cover portion (60) of long size, configured in the way of covering light source (71), make the light transmission of incidence, light is projected to outside.In addition, cover portion (60) has：Two transmittance sections (61), upwardly extend in the upper and lower of cover portion (60), by the light transmission of light source (71)；And light shielding part (63), clipped and be present on the optical axis of light source (71) (X1) by two transmittance sections (61), extend in the vertical direction, the light of light source (71) is interdicted.And then, in the respective of two transmittance sections (61), it is formed with the multiple prism portions (62) extended in the longitudinal direction respectively.Also, multiple component prisms do not make the light of light source (71) be reflected to the direction away from optical axis (X1).
Description
Technical field
The lighting device and large-scale showcase (reach- being controlled the present invention relates to the luminous intensity distribution of the light to being irradiated from light source
In showcase), the lighting device of irradiation light and using the lighting device more particularly in the showroom of large-scale showcase
Large-scale showcase.
Background technology
Conventionally, there is known using as light source the LED/light source of one and be configured to make the light from LED/light source to reflect
Reflecting plate lighting device (referring for example to patent document 1).
Patent document 1：JP 2009-195273 publications
The content of the invention
But, in the lighting device described in patent document 1, the light from light source is reflected and is carried out with reflection part
Distribution controls, but appropriate distribution controls are difficult to reflection part.Further, since using reflection for distribution controls
Part, so the increaseization for the cost brought by the increase of part number of packages and the construction that is brought by the increase of part number of packages
Complicating turns into problem.
The problem of present invention is in order to solve such and make, it is therefore an objective to providing one kind can be carried out to desired direction
Distribution controls and the cheaper lighting device and large-scale display for realizing the manufacturing cost brought by the increase of part number of packages
Cabinet.
In order to solve the above problems, a technical scheme of lighting device for the present invention possesses：Light source, irradiation light；With
And the cover portion of long size, cover above-mentioned light source and configure, make the light transmission of incidence, light is projected to outside；Above-mentioned cover portion has：
Two transmittance sections, extend on the length direction of above-mentioned cover portion, make the light transmission of above-mentioned light source；And light shielding part, by above-mentioned two
Individual transmittance section clips and is present on the optical axis of above-mentioned light source, extends on above-mentioned length direction, by the light shading of above-mentioned light source；
Above-mentioned two transmittance section it is respective on, be formed with the multiple prism portions extended respectively on above-mentioned length direction；It is above-mentioned multiple
Component prism does not make the light of above-mentioned light source be reflected to the direction away from above-mentioned optical axis.
In addition, the large-scale showcase of a technical scheme for the present invention possesses：Lighting device；And display shelf, match somebody with somebody
The showroom for housing commodity is placed in, above-mentioned commodity are displayed；The lighting device is generally perpendicularly configured with above-mentioned display shelf, with
Irradiation light in above-mentioned showroom.
In accordance with the invention it is possible to distribution controls are carried out to desired direction, and realization is brought by the increase of part number of packages
Manufacturing cost it is cheaper.
Brief description of the drawings
Fig. 1 is the stereogram of the large-scale showcase about embodiment.
Fig. 2 is the sectional view of the large-scale showcase of the relevant embodiment of Fig. 1 II-II lines.
Fig. 3 is the stereogram of the lighting device about embodiment.
Fig. 4 is the sectional view of the lighting device of the relevant embodiment of Fig. 3 IV-IV lines.
Fig. 5 is the enlarged partial cross section of the cover portion about embodiment.
Fig. 6 is the figure for the distribution curve flux for representing the lighting device about embodiment.
Fig. 7 is the figure for the Illumination Distribution for representing the lighting device about embodiment.
Fig. 8 is the figure for the distribution curve flux for representing the lighting device about comparative example 1.
Fig. 9 is the figure for the Illumination Distribution for representing the lighting device about comparative example 1.
Figure 10 is the sectional view of the cover portion of the lighting device about comparative example 2.
Figure 11 is the figure for the distribution curve flux for representing the lighting device about comparative example 2.
Figure 12 is the figure for the distribution curve flux for representing the lighting device about comparative example 3.
Figure 13 is the figure for the distribution curve flux for representing the lighting device about comparative example 3.
Figure 14 is the figure for the Illumination Distribution for representing the lighting device about comparative example 3.
Label declaration
1 large-scale showcase
2a showrooms
2b displays shelf
5 lighting devices
60 cover portions
61 transmittance sections
The 61a planes of incidence (inner face of transmittance section)
62 prism portions
The planes of incidence of 62a the 1st
The planes of incidence of 62b the 2nd
63 light shielding parts (reflecting part)
71 light sources
X1 optical axises
θ drift angles
Embodiment
(being used as the basic understanding of the present invention)
In the lighting device used in conventional large-scale showcase, in order to which the showroom of large-scale showcase is illuminated, make
Distribution controls are carried out to desired direction with reflecting plate, or light source is configured and using anti-in the way of optical axis is towards desired direction
Penetrate plate and carry out distribution controls.
In the case where carrying out distribution controls to desired direction using reflecting plate, configure reflecting plate on optical axis and carry out
Distribution controls, but in the case, hot spot (brightness spot, color spot) easily occurs in luminous intensity distribution, it is difficult to carry out distribution controls.In addition,
In this case it is desirable to reflecting plate be set, so maximization and the increase of part number of packages by large-scale showcase, manufacturing cost are high
Rise.
Light source and the situation for using reflecting plate to carry out distribution controls are being configured in the way of optical axis direction desired by
Under, distribution controls are carried out if symmetrically configuring reflecting plate relative to optical axis so that the light indiffusion from light source, it is and upper
Method is stated compared to being easier to make for distribution controls.But, in this case it is desirable to make optical axis towards desired direction, so logical
The configuration of light source is crossed, the construction of lighting device is complicated.
Use Fig. 8, Fig. 9 being illustrated with light distribution and illumination to such lighting device using reflecting plate.
Fig. 8 is the figure for the distribution curve flux for representing the lighting device about comparative example 1.Fig. 9 is to represent the photograph about comparative example 1
The figure of the Illumination Distribution of bright device.Fig. 9 represents that the length in above-below direction is the opening that 1.6m, the length of left and right directions are 0.7m
Portion 2c is configured with the Illumination Distribution of the state of two lighting devices, is that two lighting devices irradiate to the showroom of large-scale showcase
The state of light.Fig. 9 is upright along the vertical direction in Fig. 1 large-scale showcase by length 1.460m two lighting devices
In the case of 0.7m interval is separated under state, being arranged in parallel, measured in this case in opposed facing mode
The Illumination Distribution of lighting device.
As shown in figure 8, the use of the maximum luminosity of the lighting device of reflecting plate being about 500cd, light distribution angle is about 45 °.It is so-called
Light distribution angle, refers to be equal to the angular range that 1/2 luminosity of maximum luminosity is projected in distribution curve flux.Set the direction of optical axis as
In the case of 0 °, the angle of the distribution curve flux under maximum luminosity is about 80 ° and about -80 °.The shape of distribution curve flux is in short thick
Shape with circularity.If light distribution angle also has about 45 °, in the figure of the expression Illumination Distribution shown in Fig. 9, in the attached of light source
Closely there is larger spot, the difference of height of illumination is larger.Therefore, in the luminaire, well-balanced degree is relatively low.In addition, establishing light is bent
0 ° of the angle of line is rear, and 90 ° of the angle of distribution curve flux are left, and -90 ° of the angle of distribution curve flux are right.
So, in the present invention there is provided it is a kind of to desired direction carry out distribution controls and realize by part number of packages
Increase the cheaper lighting device and large-scale showcase for the manufacturing cost brought.
Hereinafter, embodiments of the present invention are illustrated referring to the drawings.Embodiments described below all represents this hair
A bright preferred concrete example.Thus, the numerical value that represents in the following embodiments, shape, material, inscape, composition
Allocation position and connection form of key element etc. are one, are not the meanings for limiting the present invention.Accordingly, with respect to following embodiment
Inscape in, represent the present invention upper concept independent claims in do not have record inscape, if
Illustrated for arbitrary inscape.
In addition, each figure is schematic diagram, not necessarily strictly illustrate.In addition, in the various figures, for substantially the same
Structure assigns identical label, and the explanation repeated is omitted or simplified.
(embodiment)
Hereinafter, to embodiment for the present invention lighting device and said using the large-scale showcase of lighting device
It is bright.
[structure]
First, the structure of the large-scale showcase of the relevant embodiment of the present invention is illustrated using Fig. 1~Fig. 5.
Fig. 1 is the stereogram of the large-scale showcase about embodiment.Fig. 2 is the relevant embodiment party of Fig. 1 II-II lines
The sectional view of the large-scale showcase of formula.Fig. 3 is the stereogram of the lighting device about embodiment.Fig. 4 is Fig. 3 IV-IV lines
Relevant embodiment lighting device sectional view.Fig. 5 is the enlarged partial cross section of the cover portion about embodiment.
In Fig. 1, in large-scale showcase, the direction of door side is defined as front direction, side mark opposite with door side is set to
Rear is to being defined as left direction by the handle side of door, door side mark opposite with handle side is set into right direction, by large-scale showcase
Ground side be defined as lower direction, upper direction will be set to lower side mark in opposite direction.In addition, in fig. 2, in large-scale showcase
In, the direction of door side is defined as front direction, side mark opposite with door side is set to rear to around display and each up and down
Direction.Also, all directions shown in each figure later Fig. 3 are all corresponding with all directions shown in Fig. 2 and show.In addition, in Fig. 1
In, above-below direction, left and right directions and fore-and-aft direction are changed according to using form, so being not limited to this.Figure afterwards
In be also same.
As shown in figure 1, large-scale showcase 1 is can be internally by the refrigerations such as food and the casing of freezen protective.It is large-scale old
Row cabinet 1 is, for example, the low-temperature showcase with door 3 set in supermarket or convenience store etc..
Large-scale showcase 1 have provided with showroom 2a main part 2, can relative to main part 2 be opened and closed three doors 3,
With 4 lighting devices 5 shown in Fig. 2.
Main part 2 contains cooling device, the control cooling device by showroom 2a compressors cooled down etc. are constituted
Control unit and power supply unit etc. that the electric power from systematic electricity is supplied to cooling device, control unit etc..In the display of main part 2
Room 2a, sets up the multistage display shelf 2b for having display food etc..In addition, showroom 2a bottom surface is also display shelf 2b.It is old
Row room 2a is provided with open forwards from the outside rectangular-shaped opening portion 2c for moving into food etc..Opening portion 2c is by from opening portion 2c
4 pillar 2d of the lower end long size that extends to upper end be divided into 3.Pillar 2d is assembled in main part 2.4 opening portion 2c
Respective size, shape etc. it is roughly the same.
3 doors 3 possess the glass plate 3a that can have an X-rayed showroom 2a and supporting glass plate 3a framework 3b respectively, display
3 opening portion 2c before the 2a of room can be opened and closed to set one to one.3 doors 3 are that size, shape etc. are roughly the same respectively
Structure.Framework 3b via hinge etc. rotationally e axle supporting in pillar 2d.Framework 3b is close contact in branch when by opening portion 2c lockings
It is before post 2d and showroom 2a opening portion 2c is inaccessible.
As shown in Fig. 24 lighting devices 5 are configured one to one with 4 pillar 2d.Lighting device 5 is configured to, by greatly
It is overlapping with pillar 2d behind pillar 2d in the case of the main view of type showcase 1.Lighting device 5 is long chi in the vertical direction
It is very little, main irradiation light in the lateral direction.
As shown in Figures 2 and 3, lighting device 5 has appliance body 50, two end caps 51 and illuminating part 70.
Appliance body 50 is in the tubular of long size, is the part of the pedestal as lighting device 5.Appliance body 50 is in upper end
And lower end is opened.In appliance body 50, provided with the connector (not shown) electrically connected with lighting device 5.By by lighting device 5
It is chimeric with connector, the required electric power that lights of lighting device 5 is supplied to the power supply unit (not shown) of appliance body 50.
At the two ends of the above-below direction of appliance body 50, end cap 51 is separately installed with.End cap 51 is made up of synthetic resin, is led to
Cross and engage with the holding section of appliance body 50 and be fixed in appliance body 50, the two ends of appliance body 50 are blocked.
In addition, in the present embodiment, the operation lighted, extinguish and dimmed etc. of lighting device 5 is by being arranged at utensil
The guidance panel of main body 50 is carried out, but it is also possible to operated via the remote control independent with large-scale showcase 1.Such
In the case of, the control line for the signal exchange between guidance panel and lighting device 5 is connected to lighting device 5.
Appliance body 50 is that all have translucency in addition to light shielding part 63 described later, such as propylene or makrolon
The optical component that the translucent material such as transparent resin material or glass material is constituted.The appliance body 50 is shaped by two colors
One of shaping (polychrome), by resettlement section 53 described later and two transmittance sections 61 described later and be arranged on these transmittance sections 61 it
Between light shielding part 63 it is formed integrally.In the present embodiment, two transmittance sections 61 and light shielding part 63 are all used as identical
The makrolon of material, but use makrolon of different nature.In addition, two transmittance sections 61 and light shielding part 63 can also be used
Different materials.
In addition, the manufacture method of appliance body 50 is not specially limited, manufactured preferably by extrusion molding
Method.In the case of manufacture molding by extrusion, transparent resin material is heated with extrusion moulding machine, melt, mixed, and is led to
The pressing mold for crossing the extruding for being arranged at extruder outlet is extruded, in the pressure-sizing that possesses pressure-sizing plate, finishing die, tank etc. and cold
But final cross sectional shape is shaped as in area while being allowed to cool solidification, the appliance body of the shape as purpose can be obtained
50。
As shown in figure 3, appliance body 50 has resettlement section 53 and cover portion 60.
Resettlement section 53 and cover portion 60 are integrally formed, and resettlement section 53 is the rear side of cover portion 60.The rear aspect of resettlement section 53 is pacified
Loaded on pillar 2d.
Shown in Fig. 4, on appliance body 50, below with plane is cut off as defined in left and right directions and fore-and-aft direction when
It will be illustrated in the case of the section view of appliance body 50.Inner surface in resettlement section 53, it is in triangle in section view to be formed with multiple
The convex portion in the vertical direction for long size of shape.
In resettlement section 53, illuminating part 70, control circuit, control line, the power supply unit to illuminating part supply electric power are contained
Deng.Inner surface in resettlement section 53, provided with by the pair of right and left sliding supporting part 51a of the grade fixation of illuminating part 70.Pair of right and left is slided
Dynamic support 51a is two teats that predetermined distance is separated as track and is protruded from the inner surface of resettlement section 53.Illuminating part
70 grades are installed to the installation of resettlement section 53 by making it be slided on pair of right and left sliding supporting part 51a.
Power supply unit is made up of the power circuit for generating the electric power for being used for making illuminating part 70 luminous.Power supply unit will for example come from business
Rectification is carried out with the alternating electromotive force of the external power source of power supply etc., smooth and decompression etc., be transformed to the direct current power of regulation grade, will
The direct current power is supplied to illuminating part 70.Power supply unit by the power lines such as control line via the power supply unit of large-scale showcase 1 with
Source power supply is electrically connected.
Illuminating part 70 is in the tabular that above-below direction is long size, the substrate with multiple light sources 71 and each light source 71 of configuration
72, being being capable of brightness adjustment control and the light emitting module controlled of mixing colours.
Light source 71 is installed on substrate 72 is arranged as a row.Light source 71 is so-called SMD (Surface Mount
Device) the LED element of type.The LED element of so-called SMD type, is to install LED core in the chamber of resin forming specifically
Piece (light-emitting component), the LED element for having enclosed in chamber the encapsulation type containing phosphor resin.Light source 71 is by being arranged at illumination dress
The control circuit for putting 5 controls and is lighted and extinguished.In addition, carrying out the tune of each light source 71 by control circuit control power supply unit
Light is mixed colours.
In addition, light source 71 is not limited to such structure, it can also use and be mounted directly on the substrate 72 of light source 71
The light emitting module of COB (Chip On Board) type of LED chip.In addition, the light-emitting component that light source 71 has is not limited to
LED, semiconductor light-emitting elements or organic EL (Electro such as can also be semiconductor laser
Luminescence) or inorganic EL etc. other solid-state light emitting elements such as EL element.
Substrate 72 is the installation base plate for installing multiple light sources 71, e.g. ceramic substrate, resin substrate or is insulated
Metal base substrate of covering etc..In addition, substrate 72 is, for example, with the tabular for being rectangular-shaped plane in vertical view.In addition,
A pair of electrodes terminal (positive electricity end of the direct current power for being used for making light source 71 luminous from outside receiving is formed with substrate 72
Son and negative electrode terminal).
The face of side (rear side) opposite side with being provided with light source of substrate 72 is fixed in installing plate 73.Installing plate 73
Two ora terminalis are supported by pair of right and left sliding supporting part 51a in the way of being sandwiched from above-below direction.
Cover portion 60 be in the vertical direction for long size, make the light transmissive part that is sent from light source 71.In addition, in this reality
Apply in mode, cover portion 60 have will function from the light that be sent from light source 71 to defined direction distribution controls.
Cover portion 60 is arranged at appliance body 50 in the way of by the grade covering of light source 71 for being installed on appliance body 50.Cover portion 60
It is in arc-shaped in the case of section view.Cover portion 60 has two transmittance sections 61 of long size and the light shielding part 63 of long size.
Two transmittance sections 61 are the light transmissive part for making to send from light source 71 respectively.Two transmittance sections 61 clip screening respectively
Light portion 63 and symmetrically configured relative to optical axis X1.The transmittance section 61 of one side (left side) is left from the left end direction of light shielding part 63
Front side, centered on the side of light source 71 describe camber line and extend.Right-hand member court of the transmittance section 61 of the opposing party (right side) from light shielding part 63
Describe camber line to forward right side, centered on the side of light source 71 and extend.That is, the transmittance section 61 in left side and the transmittance section 61 on right side is relative
Symmetrically configured in the plane as defined in above-below direction and left and right directions.Two transmittance sections 61 will used and above-below direction respectively
Transmittance section during plane (plane as defined in the left and right directions and fore-and-aft direction) cut-out that (one of length direction) is substantially orthogonal
It is in arc-shaped in the case of 61 section views.
Plane of incidence 61a and outgoing plane 61b are respectively formed with two transmittance sections 61.
Plane of incidence 61a is the respective inner surface of two incident transmittance sections 61 of the light from light source 71.Outgoing plane 61b is
The respective outer surface for two transmittance sections 61 that light from light source 71 is projected.
Respective plane of incidence 61a sides two transmittance sections 61, are formed with the multiple prism portions 62 protruded towards light source 71.
In the present embodiment, 6 prism portions 62 are respectively formed with two transmittance sections 61.The prism portion 62 on right side is in above-below direction
On be long size, be formed as, be directed away from light shielding part 63 direction (right direction) arrangement.The prism portion 62 in left side is in above-below direction
On be long size, be formed as, be directed away from light shielding part 63 direction (left direction) arrangement.Multiple prism portions 62 are in substantially three respectively
Angular shape, is configured to triangle wavy.As shown in figure 5, prism portion 62 becomes big with the vertex angle theta away from optical axis X1, prism portion 62, and
And tapered into from the plane of incidence 61a of transmittance section 61 to the height of front end, and the width of short side direction becomes big.Prism portion 62
Vertex angle theta is the angle that the 1st plane of incidence 62a described later intersects with the 2nd plane of incidence 62b described later in elongated surfaces in section view.Separately
Outside, in the present embodiment, 6 prism portions 62 are respectively formed with two transmittance sections 61, but the quantity in prism portion 62 can also
It is less than 5 or more than 7.In addition, the width of the short side direction in prism portion 62 can also be changed suitably.
In addition, two transmittance sections 61 it is respective in, on the left and right directions relative to light source 71, the light from light source 71
Easily project in the lateral direction, so not forming prism portion 62.
As shown in figure 4, the front in prism portion 62 is by rounded corners.In addition, prism portion 62 with adjacent to the prism
Valley between the other prisms portion 62 in portion 62 is bottom also by rounded corners.
Prism portion 62 has the 1st plane of incidence 62a and the 2nd plane of incidence 62b.
1st plane of incidence 62a is towards the side of light source 71 and optical axis X1 sides, so that the light from light source 71 is directly incident.In other words,
The straight line that 1st plane of incidence 62a and light source 71 are linked intersects (the 1st plane of incidence 62a is faced with light source 71) with the 1st plane of incidence 62a,
So that the light from light source 71 is directly incident to the 1st plane of incidence 62a.In addition, in the cover portion 60 on right side, the 1st plane of incidence 62a is
The face in the left side in prism portion 62.In the cover portion 60 in left side, the 1st plane of incidence 62a is the face on the right side in prism portion 62.The cover on right side
1st plane of incidence 62a in portion 60 and the 1st plane of incidence 62a of the cover portion 60 in left side is with the width of the short side direction away from optical axis X1
Become big.
2nd plane of incidence 62b is not towards the side of light source 71 and optical axis X1 sides, so that the light from light source 71 is not directly incident.Change
Yan Zhi, the straight line that the 2nd plane of incidence 62b and light source 71 link is not intersected with the 2nd plane of incidence 62b, so that the light from light source 71
It is directly not incident to the 2nd plane of incidence 62b.In addition, in the cover portion 60 on right side, the 2nd plane of incidence 62b is the right side in prism portion 62
Face, is the face of side opposite with the 1st plane of incidence 62a.In the cover portion 60 in left side, the 2nd plane of incidence 62b is the left side in prism portion 62
Face, is the face of side opposite with the 1st plane of incidence 62a.2nd plane of incidence 62b diminishes with the width of the short side direction away from optical axis X1.
It is further preferred, that extended line and 2nd plane of incidence 62b of the light source 71 towards the 2nd plane of incidence 62b straight lines irradiated
Unanimously, so as to be difficult to from the light of the irradiation of light source 71 directly incident to the 2nd plane of incidence 62b.
Light shielding part 63 is the resin by the high reflection material of the light reflection from light source 71 but it is also possible to be will come from light source
Light absorbing material of 71 light absorbs etc..As high reflection material, it can both use by polybutylene terephthalate (PBT) (PBT)
Deng hard white resin material formation material, the shape as reflecting surface can also be used on the inner surface of light shielding part 63
Into the material of the metal deposition film (metallic reflective coating) such as silver or aluminium.
Light shielding part 63 is present on the optical axis X1 of light source 71, is symmetrically configured relative to optical axis X1.Light shielding part 63 will
The light shading of light source 71.In the present embodiment, light shielding part 63 is by the reflecting part of the light reflection from light source 71.Light shielding part 63
Inner surface side and outer surface side are formed as arc-shaped in section view.The inner surface side of light shielding part 63 and outer surface are with the side of light source 71
Centered on circular arc.Light shielding part 63 is path with close to light source 71, is big footpath with away from light source 71.It is specific and
Speech, light shielding part 63 in section view, in away from light source 71 and on the direction orthogonal with optical axis X1, from optical axis X1 to light shielding part
The distance of 63 end face becomes big fan shape.
Light shielding part 63, which is present in, to be connected closest to the front end in the prism portion 62 of the transmittance section 61 of light shielding part 63 and light source 71
On the extended line of the straight line of knot.The prism portion 62 of the so-called transmittance section 61 closest to light shielding part 63, the transmittance section 61 on right side
In be left end side prism portion 62, be the prism portion 62 of right-hand member side in the transmittance section 61 in left side.
It can also be configured to, diffusion processing is implemented by plane of incidence 61a and outgoing plane 61b to two transmittance sections 61 and had
There is light diffusing.It can also for example be configured to, be formed by implementing the surface treatment such as Embossing processing on the surface of transparent panel
Minute asperities or by the surface printing dot pattern in translucent cover come with light diffusing.Carried out in addition it is also possible to stick
The film with minute asperities of the surface treatments such as Embossing processing.So, by making two transmittance sections 61 possess light diffusion function,
The light in two transmittance sections 61 is incided while being spread by two transmittance sections 61 while transmiting two transmittance sections 61.
In extrusion molding, small male and fomale(M＆F) is formed in the plane of incidence 61a and outgoing plane 61b of cover portion 60.The male and fomale(M＆F)
With by the effect of the light diffusion from light source 71, the brightness spot and color spot of luminous intensity distribution are prevented.Therefore, two transmittance sections 61 are carried out
By light spread processing it is not necessary to condition.
On in the lighting device 5 for possessing the cover portion 60 with such prism portion 62 light from light source 71 incide
Situation in the transmittance section 61 on right side, is illustrated using closest to the prism portion 62 of optical axis X1 sides.In addition, on left side
Transmittance section 61 is also likewise, omitting the description.In Figure 5, the traveling of light is represented with heavy line.
If the light from light source 71 is directly incident to the 1st plane of incidence 62a, as shown in Figures 4 and 5, with away from optical axis
X1 mode is reflected to the right, when the outer surface injection from transmittance section 61, in the way of away from optical axis X1 further to the right
Refraction.Further, since the 2nd plane of incidence 62b not towards the side of light source 71 and optical axis X1 sides so that the light from light source 71 does not enter directly
Penetrate, thus the light from light source 71 be difficult to it is directly incident to the 2nd plane of incidence 62b.
If the light from light source 71 is to directly incident near the front end in prism portion 62, the wide cause straight ahead and
Reflected on the side on the right side of light shielding part 63, towards right side.Also, with left and right directions substantially in parallel mode from transmittance section
Projected towards right side 61 outer surface.
The lighting device 5 of present embodiment is illustrated with light distribution and illumination using Fig. 6 and Fig. 7.
Fig. 6 is the figure for the distribution curve flux for representing the lighting device about embodiment.Fig. 7 represents relevant embodiment
The figure of the Illumination Distribution of lighting device.Fig. 7 represent it is same with Fig. 9 be configured with lighting device in the state of, in above-below direction
Length is the Illumination Distribution for the state that the opening portion 2c that 1.6m, the length of left and right directions are 0.7m is configured with two lighting devices,
It is state of two lighting devices to the showroom irradiation light of large-scale showcase.
As shown in fig. 6, the maximum luminosity of the lighting device 5 is about 680cd, light distribution angle is about 25 °.Setting optical axis X1 side
In the case of for 0 °, the angle of the distribution curve flux under maximum luminosity is about 75 ° and about -75 °.Under about 75 ° and about -75 °
Distribution curve flux is compared with Fig. 8 distribution curve flux, and luminosity slenderly extends.That is, under the lighting device 5, carry out in left and right directions
Luminous intensity distribution as upper expansion (batwing luminous intensity distribution).In addition, in the lighting device 5, such as being represented with Fig. 6 distribution curve flux
Like that, about 35 ° near as optical axis X1 are into about -35 ° of angle, and light shielding part 63 interdicts light.And then, in the illumination
In device 5, it is configured to, does not match somebody with somebody to the angle of the angle than about 80 ° of big distribution curve fluxs and the distribution curve flux smaller than about -80 °
Light.In addition, in the lighting device 5, in the other lighting devices 5 adjacent with the lighting device 5, prism portion 62 is matched somebody with somebody
Photocontrol, so as not to the scope luminous intensity distribution of about 35 ° Dao about -35 ° of the angle near as optical axis X1.
In the figure of the expression Illumination Distribution shown in Fig. 7, compared with the figure of Fig. 9 expression Illumination Distribution, do not have on the whole
Larger spot, the difference of height of illumination compared with.Therefore, it is well-balanced compared with using the lighting device 5 of reflecting plate in the lighting device 5
Degree is high.
The cover portion 60 of present embodiment is the size that can cover the width 17.5mm of left and right directions.Cover portion 60 is by half
A part for the circle of footpath 18mm formation.The distance on substrate 72 and the summit on the outer peripheral face of cover portion 60 is 8.7mm.Light shielding part 63
The width of the left and right directions of inner circumferential side is 3mm, and the width of the left and right directions of the outer circumferential side of light shielding part 63 is 6mm.
[comparative example 2]
The lighting device 5 for being not provided with the comparative example 2 of light shielding part 63 is illustrated using Figure 10 and Figure 11.
Figure 10 is the sectional view of the cover portion 160 about the lighting device of comparative example 2.Figure 11 represents relevant comparative example 2
The figure of the distribution curve flux of lighting device.
In the lighting device 5 of the comparative example 2, the light shielding part 63 being provided with the present embodiment is not provided with, in this reality
The part provided with light shielding part 63 for applying mode also is provided with prism portion 62.In the lighting device 5 about comparative example 2, due in light
Light shielding part 63 is not provided with axle X1, so as shown in figure 11, it can be seen from distribution curve flux, with about 70 ° of optical axis X1 directions side
To about -70 ° of angular illumination light.Due to being configured with the supporting supported below display shelf 2b in optical axis X1 directions side
Portion etc., so generally not by commodity display in such place.Therefore, it is desirable to the irradiation of the light to optical axis X1 directions is reduced, and
To direction (left and right directions) irradiation light away from optical axis X1.In the present embodiment, problems with is produced：In order to without using reflection
Plate and carry out distribution controls or prevent construction complication, reduce the irradiation to optical axis X1 directions.
In the lighting device 5, maximum luminosity is about 510cd, and light distribution angle is about 15 °.Optical axis X1 direction is being set as 0 °
In the case of, the angle of the distribution curve flux under maximum luminosity is about 83 ° and about -83 °.Luminous intensity distribution under about 83 ° and about -83 ° is bent
Line is extended in the elongated mode of luminosity.In addition, it can be seen from distribution curve flux, with about 70 ° of the optical axis X1 directions side of distribution curve flux
To about -70 ° of angular illumination light.Luminosity under about 70 ° Dao about -70 ° of angle of optical axis X1 directions side is in about 100cd to about
Waved between 200cd.
About 35 ° near as optical axis X1 are understood to can occur the spot of luminous intensity distribution under about -35 ° of angle.Such luminous intensity distribution
The main cause of spot be, because inner surface and the distance between light source 71 of cover portion 60 are relatively near, even if so photograph of light source 71
Degree diminishes, and Illumination Distribution is also uprised.In the lighting device 5 of present embodiment, light shielding part 63 is configured with, to make such
Interdicted for the light of about 35 ° Dao about -35 ° of angle near optical axis X1.Fig. 6 is compared with Figure 12, compared to the photograph of present embodiment
Spot can more occur in such luminous intensity distribution for bright device 5, the lighting device 5 of comparative example 2.That is, in the lighting device 5 of comparative example 2,
About 35 ° near as optical axis X1 to failing to interdict light under about -35 ° of angle.Therefore, in the illumination using comparative example 3
In the large-scale showcase 1 of device 5, hot spot occurs in luminous intensity distribution in the showroom 2a of large-scale showcase 1, perception is poor.
[comparative example 3]
Then, using Figure 12~Figure 14, illustrated to replacing light shielding part 63 using the comparative example 3 of Transparent Parts.
Figure 12 is the figure for the distribution curve flux for representing the lighting device about comparative example 3.Figure 13 represents relevant comparative example 3
The figure of the distribution curve flux of lighting device.Figure 14 is the figure for the Illumination Distribution for representing the lighting device about comparative example 3.Figure 14 is represented
In the state of lighting device is configured with the same manner as Fig. 9, above-below direction length be 1.6m, left and right directions length be
0.7m opening portion 2c is configured with the Illumination Distribution of the state of two lighting devices, is two lighting devices to large-scale showcase
The state of showroom irradiation light.
In fig. 12, the maximum luminosity of the lighting device 5 is about 1000cd, and light distribution angle is about 10 °.Setting optical axis X1 side
In the case of for 0 °, the angle of the distribution curve flux under maximum luminosity is about 80 ° and about -80 °.Under about 80 ° and about -80 °
Distribution curve flux is extended in the elongated mode of luminosity.In addition, it can be seen from distribution curve flux, with the optical axis X1 directions side in distribution curve flux
About 40 ° Dao about -40 ° of angular illumination light.Luminosity under about 40 ° Dao about -40 ° of angle of optical axis X1 directions side is from about
Waved between 100cd to about 200cd.
Figure 13 is using the part that Transparent Parts addition of with the diffuser with light diffusing.The lighting device 5
Maximum luminosity be about 190cd, light distribution angle is about 10 °.In the case where setting optical axis X1 direction as 0 °, matching somebody with somebody under maximum luminosity
The angle of light curve is about 80 ° and about -80 °.It can be seen from distribution curve flux, to the optical axis X1 directions of distribution curve flux (from about 65 °
Angle to about -65 °) irradiation light.From about 65 ° to about -65 ° of distribution curve fluxs on optical axis X1 directions with circularity and
Volt.Luminosity under from about 65 ° to about -65 ° of angle shakes from about 130cd to about 160cd.Understand to Transparent Parts
In the part that addition of diffuser, light is set to be spread with the bigger scope of the situation of the use Transparent Parts than Figure 12 by diffuser.
Fig. 6 is compared with Figure 12 and Figure 13, compared to the lighting device 5 of present embodiment, Figure 12's and Figure 13 of comparative example 3
Hot spot more occurs in luminous intensity distribution for lighting device 5.That is, in the lighting device 5 of Figure 12 comparative example 3, near as optical axis X1
Light can not be interdicted into about -40 ° of angle from about 40 °.In addition, in the lighting device 5 of Figure 13 comparative example 3, making
For light can not be interdicted into about -65 ° of angle from about 65 ° near optical axis X1.Therefore, filled using the illumination of comparative example 3
Put in 5 large-scale showcase 1, also occur the spot of luminous intensity distribution in the showroom 2a of large-scale showcase 1, perception is poor.
Figure 14 is the lighting device 5 in the case of the part that Transparent Parts addition of with diffuser using Figure 13.In Figure 14
In the figure of shown expression Illumination Distribution, compared with the figure of Fig. 7 expression Illumination Distribution, there is larger spot, illumination on the whole
Difference of height it is larger.Therefore, in the lighting device 5 of comparative example 3, compared with the lighting device 5 of present embodiment it is well-balanced degree compared with
It is low.
[action effect]
Then, the action effect of the lighting device 5 of present embodiment is illustrated.
As described above, possess about the lighting device 5 of present embodiment：Light source 71, irradiation light；And the cover of long size
Portion 60, is configured in the way of covering light source 71, makes the light transmission of incidence, light is projected to outside.In addition, cover portion 60 has：Two
Individual transmittance section 61, is upwardly extended in the upper and lower of cover portion 60, makes the light transmission of light source 71；And light shielding part 63, by two printing opacities
Portion 61 is clipped and is present on the optical axis X1 of light source 71, extends in the vertical direction, and the light of light source 71 is interdicted.And then, two
The multiple prism portions 62 for being each formed with the vertical direction extending respectively of individual transmittance section 61.Also, multiple 62 points of prism portions
The light of light source 71 is not set to be reflected to the direction away from optical axis X1.
Rolled over according to the structure, the prism portion 62 of the light transmission transmittance section 61 from light source 71 to the direction away from optical axis X1
Penetrate.Further, since light shielding part 63 is present on optical axis X1, so light is difficult to be irradiated to the position than the direction rearward of light shielding part 63
Put, thus with it is as shown in Figure 10 be not provided with the cover portion 160 of light shielding part 63 compared with, hot spot is not likely to produce in luminous intensity distribution.Therefore,
The light incided in the transmittance section 61 on right side is reflected to as the substantially right direction in the direction away from optical axis X1, incides left side
Light in transmittance section 61 is reflected to as the substantially left direction in the direction away from optical axis X1.As a result, by two transmittance sections 61, with
The mode luminous intensity distribution spread to substantially left and right directions, and be interrupted towards the light of backward directions.Therefore, without using parts such as reflecting plates
Distribution controls can just be carried out.
Thus, it is possible to carry out distribution controls to desired direction, and it can realize what is brought by the increase of part number of packages
Manufacturing cost it is cheaper.
In addition, possessing about the large-scale showcase 1 of present embodiment：Lighting device 5；And display shelf 2b, it is configured at
House the showroom 2a of commodity, display goods.In addition, lighting device 5 is generally perpendicularly configured with display shelf 2b, with display
Irradiation light in the 2a of room.
In the structure shown here, also effect is played the same role in the large-scale showcase 1 for possessing lighting device 5.
In addition, in the lighting device 5 about present embodiment, multiple prism portions 62 are respectively from the transmittance section of the side of light source 71
61 inner surface is protruded towards light source 71.
According to the structure, by the light of light source 71 to the direction (the substantially left and right directions intersected with optical axis X1) away from optical axis X1
Luminous intensity distribution.Therefore, it is easier to carry out distribution controls on the substantially left and right directions intersected with optical axis X1.
In addition, about present embodiment lighting device 5 by when being cut off with the plane being substantially orthogonal with above-below direction
In the case of the section view of cover portion 60, multiple prism portions 62 are in roughly triangular shape respectively, are arranged in the way of away from optical axis X1.This
Outside, it is and nearer away from optical axis X1 in the case of by the section view of cover portion 60 when being cut off with the plane being substantially orthogonal with above-below direction
Prism portion 62 is compared, and the vertex angle theta in the prism portion 62 away from optical axis X1 farther out is bigger and from inner surface to the front end in prism portion 62
Height is smaller.
According to the structure, the light from light source 71 is reflected and irradiated to substantially left and right directions by prism portion 62.Therefore, by the right side
The transmittance section 61 of side luminous intensity distribution in the way of towards substantially right direction, by the transmittance section 61 in left side in the way of towards substantially left direction
Luminous intensity distribution.Therefore, it is easier to carry out distribution controls.
In addition, in the lighting device 5 about present embodiment, multiple prism portions 62 have respectively towards the side of light source 71 and
Optical axis X1 sides are so that the 1st plane of incidence 62a of the light directly incidence of light source 71.
According to the structure, if the light of light source 71 is directly incident to the 1st plane of incidence 62a, to the direction away from optical axis X1
Refraction.Therefore, because two transmittance sections 61 with luminous intensity distribution by way of spreading in the lateral direction, so being easier to make for light-operated
System.
In addition, in the lighting device 5 about present embodiment, multiple prism portions 62 have not towards the side of light source 71 respectively
And optical axis X1 sides are so that not direct the 2nd incident plane of incidence 62b of the light from light source 71.
According to the structure, due to the light of light source 71 be difficult to it is directly incident to the 1st plane of incidence 62a, so light be difficult to it is illuminated
To optical axis X1 sides.
In addition, in the lighting device 5 about present embodiment, light shielding part 63 with the direction orthogonal with optical axis X1 from
The distance of optical axis X1 to the end face of light shielding part 63 becomes big mode and is arranged at cover portion 60 with away from light source 71.
According to the structure, the light incided in the right flank of light shielding part 63 reflects and right direction injection, incides shading
Light in the left surface in portion 63 is reflected and left direction is projected.Therefore, side of the light near optical axis X1 to spread in the lateral direction
Formula by luminous intensity distribution, so light be difficult to irradiate the rear of light shielding part 63 to.
In addition, in the lighting device 5 about present embodiment, light shielding part 63 is present in the rib that will be close to light shielding part 63
On the extended line for the straight line that the front end in mirror portion 62 links with light source 71.
According to the structure, from the incident light in the front end with the immediate prism portion 62 of light shielding part 63 in the side of light shielding part 63
Upper reflection.Therefore, the light near optical axis X1 in the way of spreading in the lateral direction by luminous intensity distribution, so the light of backward directions irradiation enters
One step is reduced.
In addition, in the lighting device 5 about present embodiment, light shielding part 63 is by the reflection of the light reflection of light source 71
Portion.
According to the structure, compared with transmittance section 61 is made into the situation of light absorption part, the light projected in the lateral direction increases
Plus.
In addition, about in the lighting device 5 of present embodiment, transmittance section 61 and light shielding part 63 are shaped and one by polychrome
Ground is formed.
, can be by the easy landform of the part of transmittance section 61 and light shielding part 63 with respectively different characteristic according to the structure
Into.
(other variations etc.)
More than, lighting device for the present invention and large-scale showcase are illustrated based on present embodiment, but this
Invention is not limited to above-mentioned embodiment.
In addition, in the above-described embodiment or, pair of sliding support is can change the position of installing plate
Mode is provided with multiple.In the case, by make installing plate be slidably mounted to pair of sliding support some on, can adjust
Position.Therefore, it is possible to adjust the position of illuminating part etc. relative to prism portion.
In addition, form obtained from implementing the various modifications that those skilled in the art expect to present embodiment or
Realized by arbitrarily combining the inscape and function of present embodiment in the scope of purport of the present invention is not departed from
Form be also included in the present invention.
Claims (10)
1. a kind of lighting device, it is characterised in that possess：
Light source, irradiation light；And
The cover portion of long size, is configured in the way of covering above-mentioned light source, makes the light transmission of incidence, light is projected to outside；
Above-mentioned cover portion has：
Two transmittance sections, extend on the length direction of above-mentioned cover portion, make the light transmission of above-mentioned light source；And
Light shielding part, is clipped and be present on the optical axis of above-mentioned light source by above-mentioned two transmittance section, extends on above-mentioned length direction,
The light of above-mentioned light source is interdicted；
In the respective of above-mentioned two transmittance section, the multiple prism portions extended respectively on above-mentioned length direction are formed with；
Above-mentioned multiple component prisms do not make the light of above-mentioned light source be reflected to the direction away from above-mentioned optical axis.
2. lighting device as claimed in claim 1, it is characterised in that
Inner surface of the above-mentioned multiple component prisms not from the above-mentioned transmittance section of above-mentioned light source side is protruded towards above-mentioned light source.
3. lighting device as claimed in claim 2, it is characterised in that
In the case of by with above-mentioned cover portion section view when being cut off with the plane that above-mentioned length direction is substantially orthogonal,
Above-mentioned multiple component prisms not Cheng roughly triangular shape, by away from arranging in the way of above-mentioned optical axis；
Prism portion away from above-mentioned optical axis farther out is compared with the above-mentioned prism portion nearer away from above-mentioned optical axis, and the drift angle in above-mentioned prism portion is more
Greatly, the height and from above-mentioned inner surface to the front end in above-mentioned prism portion is smaller.
4. lighting device as claimed in claim 1 or 2, it is characterised in that
Above-mentioned multiple component prisms not Ju You the 1st plane of incidence, the 1st plane of incidence towards above-mentioned light source side and above-mentioned optical axis side, with
Make the light of above-mentioned light source directly incident.
5. lighting device as claimed in claim 1 or 2, it is characterised in that
Above-mentioned multiple component prisms not Ju You the 2nd plane of incidence, the 2nd plane of incidence not towards above-mentioned light source side and above-mentioned optical axis side,
So that the light of above-mentioned light source is not directly incident.
6. lighting device as claimed in claim 1 or 2, it is characterised in that
Above-mentioned light shielding part with the direction orthogonal with above-mentioned optical axis from above-mentioned optical axis to the end face of above-mentioned light shielding part distance with
And become big mode away from above-mentioned light source and be arranged at above-mentioned cover portion.
7. lighting device as claimed in claim 6, it is characterised in that
Above-mentioned light shielding part is present in the straight line that the front end in the above-mentioned prism portion that will be close to above-mentioned light shielding part links with above-mentioned light source
Extended line on.
8. lighting device as claimed in claim 1 or 2, it is characterised in that
Above-mentioned light shielding part is by the reflecting part of the light reflection of above-mentioned light source.
9. lighting device as claimed in claim 1 or 2, it is characterised in that
Above-mentioned transmittance section and above-mentioned light shielding part are shaped and are integrally formed by polychrome.
10. a kind of large-scale showcase, it is characterised in that possess：
Lighting device described in claim 1 or 2；And
Shelf is displayed, the showroom for housing commodity is configured at, above-mentioned commodity are displayed；
The lighting device is generally perpendicularly configured with above-mentioned display shelf, with the irradiation light in above-mentioned showroom.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016081974A JP6722884B2 (en) | 2016-04-15 | 2016-04-15 | Lighting equipment and reach-in showcase |
| JP2016-081974 | 2016-04-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107304980A true CN107304980A (en) | 2017-10-31 |
Family
ID=60084994
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710236028.9A Pending CN107304980A (en) | 2016-04-15 | 2017-04-12 | Lighting device and large-scale showcase |
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| Country | Link |
|---|---|
| JP (1) | JP6722884B2 (en) |
| CN (1) | CN107304980A (en) |
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| CN204901657U (en) * | 2015-08-04 | 2015-12-23 | Tcl智能科技（合肥）有限公司 | Illumination lamp shade, refrigerator lighting device and refrigerator |
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| JP2013232286A (en) * | 2012-04-27 | 2013-11-14 | Sanden Corp | Rotation prevention mechanism of lighting apparatus |
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|---|---|---|---|---|
| CN201348419Y (en) * | 2008-12-31 | 2009-11-18 | 冷光容 | Unidirectional and bidirectional illuminating LED lamp for refrigerators |
| WO2013190979A1 (en) * | 2012-06-19 | 2013-12-27 | 株式会社 東芝 | Lighting device |
| CN103851417A (en) * | 2012-12-04 | 2014-06-11 | 西安中科麦特电子技术设备有限公司 | Anti-dazzle LED (light emitting diode) lighting lamp |
| CN203100346U (en) * | 2012-12-14 | 2013-07-31 | 青岛德莱维电器有限公司 | Lampshade structure of refrigerator for showing |
| EP2789898A1 (en) * | 2013-03-11 | 2014-10-15 | Ricoh Company Ltd. | Straight-tube LED lamp, and lighting device |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2017191747A (en) | 2017-10-19 |
| JP6722884B2 (en) | 2020-07-15 |
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Application publication date: 20171031 |