WO2016105177A2 - Refrigerator - Google Patents

Refrigerator Download PDF

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Publication number
WO2016105177A2
WO2016105177A2 PCT/KR2015/014362 KR2015014362W WO2016105177A2 WO 2016105177 A2 WO2016105177 A2 WO 2016105177A2 KR 2015014362 W KR2015014362 W KR 2015014362W WO 2016105177 A2 WO2016105177 A2 WO 2016105177A2
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WO
WIPO (PCT)
Prior art keywords
member
light
light emitting
lighting unit
embodiment
Prior art date
Application number
PCT/KR2015/014362
Other languages
French (fr)
Korean (ko)
Other versions
WO2016105177A3 (en
Inventor
아다치츠요시
우치다다이스케
요시다쥰지
Original Assignee
삼성전자주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to JP2014-266761 priority Critical
Priority to JP2014266761 priority
Priority to JP2015-029929 priority
Priority to JP2015029929 priority
Priority to JP2015177817 priority
Priority to JP2015-177817 priority
Priority to JP2015236937 priority
Priority to JP2015-236937 priority
Priority to JP2015-237600 priority
Priority to JP2015237600A priority patent/JP2017106637A/en
Application filed by 삼성전자주식회사 filed Critical 삼성전자주식회사
Priority to KR10-2015-0187861 priority
Priority to KR1020150187861A priority patent/KR20160079726A/en
Priority claimed from US15/539,904 external-priority patent/US10203153B2/en
Publication of WO2016105177A2 publication Critical patent/WO2016105177A2/en
Publication of WO2016105177A3 publication Critical patent/WO2016105177A3/en

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Abstract

Disclosed is a refrigerator comprising a lighting unit, which provides sufficient light inside a storage chamber while preventing the user from being dazzled. A refrigerator according to an embodiment comprises a storage chamber, which has an opening formed on the front side thereof, and a lighting unit, which is mounted in the storage chamber, wherein the lighting unit comprises a light emitting member, which emits light, and an optical member for controlling the light, which has been emitted from the light emitting member, so as to propagate within a preset angular range, forward propagation of the light, which has been emitted from the light emitting member, is hindered by a reflecting member, and the same propagates towards the rear side of the storage chamber.

Description

Refrigerator

The present invention relates to a refrigerator having an improved structure of a lighting unit.

Japanese Laid-Open Patent Publication No. 2012-26678 describes a refrigerator having a loading shelf on which a storage is mounted, and a refrigerator having a plurality of light emitting diodes installed on the ceiling side of the refrigerator and irradiating light. The plurality of light emitting diodes are arranged such that the optical axes thereof face the front side of the refrigerating chamber and intersect with the uppermost shelf.

The refrigerator is provided with a lighting device that illuminates the inside of the storage compartment. Conventionally, the inside of a storage compartment may feel dark even if the lighting apparatus is provided in the refrigerator. In addition, even if the brightness of the light installed in the storage compartment is increased, the user may feel glare. In such a case, it may be difficult for the user to see food or the like inside the storage compartment.

According to one embodiment, it is possible to provide a refrigerator including an illumination device that improves the brightness in the storage compartment and makes it easy to view the items in the storage compartment.

According to an embodiment of the present disclosure, a refrigerator includes a storage compartment having an opening formed in front and an illumination unit mounted in the storage compartment, wherein the illumination unit includes: a light emitting member for irradiating light; And an optical member for controlling the light emitted from the light emitting member to travel within a range of a predetermined angle, wherein the light emitted from the light emitting member is prevented from traveling forward by the reflective member, Proceed backwards.

Light emitted from the light emitting member is reflected by the optical member and forms an angle with a vertical axis extending vertically from one surface of the storage chamber in a range of 20 ° to 60 °.

The optical member includes a lens member positioned in front of the light emitting member and refracting light emitted from the light emitting member.

The lighting unit includes a cover member through which light emitted from the light emitting member passes.

The cover member may include a first cover part extending in one direction and a second cover part provided with a light diffusing degree higher than that of the first cover part and provided in parallel with the first cover part.

The first cover part and the second cover part are provided integrally.

The first cover portion and the second cover portion are provided to be in a range of 20 ° or more and 60 ° or less with a vertical axis extending vertically from one surface of the storage compartment, to guide light emitted from the light emitting member into the storage compartment.

The optical member further includes a reflective member, and the light emitted from the light emitting member is reflected by the reflective member and is incident to the cover member.

The optical member may include a first reflecting member positioned in front of the light emitting member and reflecting light to propagate toward the inside of the storage chamber, and a second reflecting member reflecting light reflected from the first reflecting member to the rear of the storage chamber. It includes.

The lighting unit includes a plurality of light emitting members, and the lens member is provided in a single position and positioned in front of the plurality of light emitting members.

A plurality of lens members are provided to correspond to the plurality of light emitting members.

The optical member includes a wavelength conversion member for converting the wavelength of light emitted from the light emitting member.

The wavelength conversion member includes a phosphor that absorbs light emitted from the light emitting member and emits light having a long wavelength.

The wavelength conversion member includes a green fluorescent part absorbing blue light and emitting green light and a red fluorescent part absorbing blue light and emitting red light.

The lighting unit further includes a cover member through which the light emitted from the light emitting member passes and a reflective member reflecting the light whose wavelength is converted by the wavelength conversion member to be incident on the cover member.

According to an embodiment, a refrigerator includes a storage compartment accommodating an article and an illumination unit mounted in the storage compartment, wherein the illumination unit includes: a light emitting member emitting light; And a first diffusion part for guiding the light emitted from the light emitting member to proceed to the inside of the storage compartment, and a second diffusion part having a diffuser greater than the first diffusion part and diffusing the light of the light emitting member. It includes;

The first diffusion part is provided to be inclined at a predetermined angle from a vertical axis extending vertically from one surface of the storage compartment in which the lighting unit is installed, and the second diffusion part extends in parallel with the first diffusion part.

A plurality of first diffusion units and a plurality of second diffusion units are provided and alternately positioned.

And a reflecting member for reflecting the light emitted from the light emitting member to be incident on the cover member, and an optical member for controlling the light emitted from the light emitting member to be incident on the reflecting member.

One surface of the reflective member has an angle where the optical axis of the reflective surface adjacent to the light emitting member is perpendicular to the vertical axis, rather than the angle of the optical axis of the reflective surface far from the light emitting member with the vertical axis extending vertically from one surface of the storage compartment in which the lighting unit is provided. It is provided small.

According to an embodiment, a refrigerator includes a storage compartment accommodating an article and an illumination unit mounted in the storage compartment, and the illumination unit includes: a light emitting device that emits light; And an optical member for guiding the light emitted from the light emitting element to proceed to the inside of the storage compartment and preventing the light emitted from the light emitting element from proceeding to the front of the storage compartment.

The optical member controls light distribution so that an angle at which the maximum luminance of light emitted from the light emitting element is perpendicular to a vertical axis extending vertically from one surface of the storage chamber is in a range of 20 ° to 60 °.

The optical member forms a light distribution pattern that is symmetrical with respect to the light ray having the maximum luminance.

The optical member controls light distribution such that the light distribution angle is narrow.

The optical member controls light distribution so that the illuminance in the left-right direction of the rear part of the storage chamber is uniform.

In one embodiment, a refrigerator includes: a storage compartment having an opening formed at a front thereof; And a light emitting element, and an illumination member including an optical member configured to cause light emitted from the light emitting element to travel inwardly of the storage chamber and to prevent the light from traveling toward the opening side. It includes, The lighting unit is provided with at least one side portion of the storage compartment.

The optical member controls the angle at which the maximum luminance of the light emitted from the light emitting element is formed with a vertical axis extending vertically from the side of the storage chamber to be within a range of 30 ° to 60 °.

The substrate of the light emitting element is mounted on the side of the storage compartment.

The optical member controls light distribution so that the illuminance between both opposing sides is uniform.

Illumination device according to an embodiment, the light emitting device for irradiating light from one direction to another direction; And

And an optical member provided to guide the light emitted from the light emitting device to travel in one direction and to hinder the progress of the other direction, wherein the optical member includes: a first diffusion unit and a first diffusion unit for diffusing the light of the light emitting device; A second diffuser having a diffuser greater than one diffuser, wherein the second diffuser is inclined to have a predetermined angle with a vertical axis extending perpendicular to the optical member so that light passing through the second diffuser travels in one direction; It is provided to extend in a direction parallel to the first diffusion unit.

A reflecting member reflecting light emitted from the light emitting device in one direction; And a control member controlling the light emitted from the light emitting device to travel in the other direction to be incident on the reflective member.

The reflecting member is smaller than the angle at which the optical axis of the reflecting surface adjacent to the light emitting element forms the optical axis of the reflecting surface farther than the vertical axis.

The first diffusion part includes a surface orthogonal to the predetermined angle in a direction facing the light emitting element.

A first reflecting member reflecting light emitted from the light emitting element in one direction; And a second reflecting member reflecting the reflecting member reflecting the light traveling toward the other direction among the light emitted by the light emitting device toward the first reflecting member.

Lighting device according to an embodiment, the lighting device is installed in the storage compartment of the refrigerator, the lighting device, the light emitting element; An optical unit configured to allow the light emitted from the light emitting device to travel toward the inside of the storage chamber and to prevent the light from traveling toward the front; A wavelength conversion unit provided to face the light emitting element and converting a wavelength of light emitted by the light emitting element; And a non-passing unit disposed adjacent to the wavelength conversion unit and configured to allow the light emitted by the light emitting device to not pass through the wavelength conversion unit.

A first space part formed between the wavelength converter and the light emitting element; And a second space portion in a direction facing the first space portion with respect to the wavelength converter, wherein the cross-sectional area of the first space portion is smaller than the cross-sectional area of the second space portion.

The first space portion and the second space portion are formed between the optical portion and the wavelength converter.

Illumination apparatus according to an embodiment, the light emitting element; An optical unit configured to allow the light from the light emitting device to travel in one direction and to prevent travel in the other direction; A transmission unit provided to face the light emitting element and transmitting light incident from the light emitting element; A wavelength conversion unit provided in a direction opposite to the light emitting element with respect to the transmission unit to convert wavelengths of light incident on the transmission unit; And an output unit formed in the transmission unit and outputting light incident on the transmission unit from the transmission unit without passing through the wavelength conversion unit.

The transmission part includes an inclination part provided to be inclined at a predetermined angle with respect to the optical axis of the light emitting device.

The output portion is provided with a light diffusion greater than that of the light on the inclined portion.

According to the refrigerator according to one embodiment, the inside of the storage compartment may be irradiated with a sufficient amount of light.

In addition, the lighting unit may brightly illuminate the inside of the storage compartment to improve visibility of an article or the like located in the storage compartment.

1 is a view illustrating an internal view of a refrigerator according to a first embodiment.

2A and 2B are views illustrating an illumination unit according to the first embodiment.

3A and 3B show a lens member according to the first embodiment.

4 is a view for explaining the feature of the lighting unit according to the first embodiment.

5A and 5B are views for explaining the operation of the lighting unit according to the first embodiment.

FIG. 6 is a view illustrating an internal view of a refrigerator according to a second embodiment.

7A and 7B are views illustrating an illumination unit according to a second embodiment.

8A and 8B show a lens member according to the second embodiment.

9A and 9B are views for explaining features of the lighting unit according to the second embodiment.

10A and 10B illustrate a lighting unit according to a third embodiment.

11A and 11B are views illustrating an illumination unit according to a fourth embodiment.

12 is a view showing a lighting unit according to a fifth embodiment.

13 is a view showing a lighting unit according to a fifth embodiment.

14A and 14B are views illustrating a lighting unit according to Modification Example 1 and Modification Example 2;

15A and 15B are views illustrating a lighting unit according to Modification Example 3 and Modification Example 4. FIG.

16 is a view showing a lighting unit according to a sixth embodiment.

17 is a view for explaining an illumination unit according to a sixth embodiment.

18A and 18B show a lighting unit according to a seventh embodiment.

19 is a view for explaining an illumination unit according to a seventh embodiment.

20A and 20B are diagrams illustrating a lighting unit according to an eighth embodiment.

21 is a view for explaining a light emitting unit according to an eighth embodiment.

FIG. 22 is a view for explaining a light emitting unit according to Modification Example 5. FIG.

Hereinafter, a lighting apparatus of the present invention and a refrigerator including the same will be described in detail with reference to the accompanying drawings.

1 is a view illustrating an internal view of a refrigerator according to a first embodiment.

Referring to FIG. 1, the refrigerator 1 of the first embodiment includes a storage chamber 2 that houses the article 100, and a door 3 that opens and closes the storage chamber 2. The refrigerator 1 may include a shelf 4 on which the article 100 is mounted and an illumination 6 illuminating the inside of the storage compartment 2. In addition, the refrigerator 1 includes a cooler (not shown) for cooling the inside of the storage compartment 2 and a fan (not shown) for circulating cold air in the storage compartment 2.

In the following, when the front-rear direction of the refrigerator 1 shown in FIG. 1 is viewed from the front, the front side of the ground is simply referred to as the "front side F", and the inside of the ground is referred to as the "inside B". In addition, the left side of the ground in the left and right directions of the refrigerator 1 shown in FIG. 1 may be simply referred to as “left (L)”, and the right side of the ground may be referred to simply as “right (R)”. In addition, the upper side of the ground in the up and down direction of the refrigerator 1 illustrated in FIG. 1 may be simply referred to as “upper side U”, and the lower side of the ground may be simply referred to as “lower side D”.

The storage chamber 2 has 2 L of left side parts provided in the left side L, and 2 R of right side parts provided in the right side R. As shown in FIG. The storage chamber 2 has an upper surface portion 2U formed on the upper side U, a lower surface portion (not shown) formed on the lower side D, and a rear portion 2B formed on the inner side B. As shown in FIG. In addition, the opening 21 is formed in the front side F of the storage chamber 2. The storage compartment 2 is provided as a space for accommodating the article 100 by a left side portion 2L, a right side portion 2R, an upper surface portion 2U, a lower surface portion (not shown), and a back portion 2B. .

The storage compartment 2 may be provided with a protrusion 22 supporting the shelf 4. The protrusion part 22 protrudes toward the inner side of the storage chamber 2 and extends from the front side F toward the inner side B. As shown in FIG. In the present embodiment, a pair of projections 22 are formed on the left surface portion 2L and the right surface portion 2R, respectively.

In the refrigerator 1 of this embodiment, the door 3 has the left door 3L provided in the left side L, and the right door 3R provided in the right side R. As shown in FIG. The right door 3R and the left door 3L are rotatably provided at the front side F of the storage compartment 2, respectively. The door 3 opens and closes the opening 21.

The shelf 4 is a plate-shaped member. In the present embodiment, a plurality of shelves 4 are provided. The shelf 4 is supported by the protrusion 22. The shelf 4 forms a surface in the storage compartment 2 for mounting the article 100.

The illumination 6 contains the left 1st illumination part 60L1 provided in the lower side D of the left side surface part 2L, and the left 2nd illumination part 60L2 provided in the upper side U of the left side surface part 2L. do. In addition, the illumination 6 has the right 1st illumination part 60R1 provided in the lower side D of the right side part 2R, and the right 2nd illumination part 60R2 provided in the upper side U of the right side part 2R. Have In addition, the illumination 6 includes the left third lighting unit 60L3 provided on the left side L from the upper surface portion 2U and the right third lighting unit 60R3 provided on the right side R from the upper surface portion 2U. Have

Meanwhile, the left first illumination unit 60L1, the left second illumination unit 60L2, the left third illumination unit 60L3, the right first illumination unit 60R1, the right second illumination unit 60R2, and the right third illumination unit 60R3 are provided. Each has the same basic structure. In the following, when these are not particularly distinguished, they are simply referred to as "lighting unit 60".

2A and 2B are views illustrating an illumination unit according to the first embodiment.

FIG. 2A shows the right first lighting unit 60R1 as an example of the lighting unit 60, and FIG. 2B shows a IIb-IIb cross section of the lighting unit 60 shown in FIG. 2A.

3A and 3B show a lens member according to the first embodiment.

3A and 3B are cross-sectional views when the illumination unit 60 is cut in the front-rear direction, respectively.

As shown in FIGS. 2A and 2B, the lighting unit 60 includes a case 51 and a cover member 52 covering the case 51. The lighting unit 60 includes a plurality of light emitting diodes (LEDs) 53 for emitting light, a substrate 54 on which the LEDs 53 are mounted, and a lens member 65 for controlling light emitted from the LEDs 53. It includes.

The case 51 is a box-shaped member having an opening, as shown in FIG. 2B. The case 51 may accommodate the plurality of LEDs 53 and the substrate 54 inside. For example, the case 51 may be provided to be embedded in the right side portion 2R of the storage compartment 2 or the like.

The cover member 52 covers the opening of the case 51, as shown in FIG. 2B. The cover member 52 can block the LED 53, the substrate 54, and the lens member 65 from the outside of the case 51. The cover member 52 can be manufactured using resin, such as PC (polycarbonate), PMMA (polymethyl methacrylate resin), glass, or the like. The cover member 52 of the present embodiment may be provided transparently so that the light emitted from the LED 53 can transmit.

The cover member 52 may be provided in white so as to have a diffusion characteristic, or a lens cut process or a paint process may be performed on the inner side or the outer side.

Any kind of LED may be used as long as the LED 53 can illuminate the article 100 accommodated in the storage compartment 2. In the present embodiment, white light emission may be used for the LED 53. In detail, the LED 53 of this embodiment realizes white light emission by using a blue light emitting diode, a fluorescent material for converting blue light into green, and a fluorescent material for converting blue light into red. In the present embodiment, the LED 53 is attached so that its main surface 53S is disposed along each surface constituting the storage chamber 2 (for example, the left surface portion 2L, the upper surface portion 2U, and the like). do.

The main light emission direction irradiated from the LED 53 is a direction perpendicular to each surface constituting the storage chamber 2 (hereinafter referred to as "vertical axis S").

The substrate 54 may be formed in a rectangular shape. Substrate 54 supplies power to LED 53. In addition, the substrate 54 is electrically connected to a control unit (not shown) that controls the light emission of the LED 53. The board | substrate 54 is attached so that the main surface 54S may be arrange | positioned along each surface which comprises the storage chamber 2 (for example, 2 L of left side parts, 2 U of upper surface parts, etc.).

As described above, in the present embodiment, the main surface 53S of the LED 53 and the main surface 54S of the substrate 54 are formed on each surface constituting the storage chamber 2 (for example, the left surface portion 2L). It is provided so that it may be arrange | positioned along 2U of upper surface parts. Accordingly, in the present embodiment, the illumination unit 60 may reduce the amount of protrusion protruding toward the center side of the storage compartment 2, thereby making it possible to compactly implement the illumination unit 60.

As shown in Figs. 2A and 2B, the lens members 65 are provided for a plurality of LEDs 53 (in this embodiment, six), respectively. In the first embodiment, the light of the LED 53 of the single body is controlled by the single lens member 65. Further, the light emitted from the LED 53 is directed toward the inside B of the storage compartment 2, and the light is emitted to prevent the light emitted from the LED 53 from traveling toward the front side F. ) Can be controlled.

In this embodiment, the lens member 65 can be manufactured using resins such as PC (polycarbonate resin), PMMA (polymethyl methacrylate resin), glass, and the like.

In this embodiment, preventing the propagation of light toward the front side F means that the light of the LED 53 is greater than 0 ° on the front side F with respect to the vertical axis S passing through the LED 53. It means not to proceed at an angle.

Hereinafter, the unit comprised by the single lens member 65 and the single-piece LED 53 is called "light source 600."

As shown in FIG. 3A, the lens member 65 may be provided such that the hollow portion 65C is formed in the cross section. The lens member 65 accommodates the LED 53 inside the hollow portion 65C. Hereinafter, the surface on the hollow part 65C side is called the "inner surface" of the lens member 65, and the outer surface is called the "outer surface" of the lens member 65. As shown in FIG.

As shown in FIG. 3A, the lens member 65 may be divided into a plurality of regions as a configuration for controlling light distribution by polarizing light from the LED 53. For example, the lens member 65 may be divided into three regions. In the lens member 65, the first region 651, the second region 652, and the third region 653 may be sequentially positioned from the inner side B toward the front side F. FIG.

The first area 651 is an area formed inside B based on the LED 53. The first region 651 has a schematic shape in cross section, and is formed in a substantially arc shape on both the inner surface and the outer surface. Therefore, among the light radiated radially from the LED 53, the light incident to the first region 651 generally maintains the angle radiated from the LED 53 and travels toward the inside B.

The second region 652 is a region formed at an approximately center portion in the front side F and inner B directions with respect to the LED 53. The second region 652 has a schematic shape in cross section, which is formed substantially parallel to the main surface 53S of the LED 53 on both the inner surface and the outer surface. The outer surface of the second region 652 is gently inclined from the inner side B to the lower side of the protruding height.

Therefore, of the light irradiated radially from the LED 53, the light incident on the second region 652 is refracted at a predetermined angle and proceeds toward the inside B. FIG.

The third region 653 is a region formed on the front side F with respect to the LED 53. The inner surface of the third region 653 may be formed so that the cross section is straight. The inner surface of the third region 653 is provided such that an angle formed with respect to the substrate 54 becomes an acute angle. The outer surface of the third region 653 has an arc shape, and the angle formed with respect to the substrate 54 is an acute angle.

Therefore, of the light irradiated radially from the LED 53, the light incident on the third region 653 is totally reflected at the outer surface side, and the light does not proceed toward the front side F.

As shown in FIG. 3A, the lens member 65 makes the illuminance uniform on the imaginary plane perpendicular to the substrate 54 in the cross section and seen by the extended vertical axis S. FIG. In particular, the lens member 65 controls the light distribution so that the illuminance in the left and right directions of the back portion 2B is uniform. Then, in all regions in the storage chamber 2, the illuminance is uniform and the light shines brightly as a whole.

The lens member 65 controls the light emitted from the LED 53, and as shown in Fig. 3B, the direction of the light beam having the maximum luminance (hereinafter referred to as "optical axis Bm" in this embodiment). ) Is made 20 ° or more and 60 ° or less with respect to the vertical axis S.

As shown in Fig. 3B, the lens member 65 of this embodiment forms a light distribution angle of ± 30 ° (narrow angle) about the optical axis Bm. Moreover, the lens member 65 forms the substantially conical light distribution pattern which made the optical axis Bm the rotation center. That is, the lens member 65 can irradiate spot light, respectively.

On the other hand, the number of lens members 65 is not particularly limited, and may be appropriately installed depending on the overall brightness of the LED 53, the size of the refrigerator, and the like.

4 is a view for explaining the feature of the lighting unit according to the first embodiment.

4 is a conceptual diagram for the light intensity of each light source 600 installed in the lighting unit 60.

Referring to FIG. 4, in the lighting unit 60, the plurality of light sources 600 may be arranged such that the brightness of the light source 600 increases from the front side F toward the inside B. As shown in FIG. In the illumination part 60, the luminous intensity of the light source 600 located in the inner side B which becomes the back part 2B is smaller than the luminous intensity of the light source 600 located in the front side F. As shown in FIG. As described above, in the first embodiment, the luminous intensity of the light source 600 located on the front side F can be increased, and the luminous intensity of the light source 600 located on the inside B can be reduced.

By such a structure, the roughness of the back part 2B can be made uniform in the whole area | region of the back part 2B.

In the first embodiment, the lighting unit 60 is provided to extend from the front side F toward the inner side B. As shown in FIG. It is also possible to embed the lighting unit 60 in the projection 22 (see FIG. 1) extending from the front side F toward the inner side B. The protrusion 22 may perform a function of supporting the shelf 4 and a function of constituting a part of the lighting unit 60.

5A and 5B are views for explaining the operation of the lighting unit according to the first embodiment.

Hereinafter, the visibility of the article 100 in the storage compartment 2 of the refrigerator 1 and the brightness in the storage compartment 2 according to the first embodiment will be described in detail.

In the illumination unit 60 of this embodiment, as shown in FIG. 5A, a plurality of light sources 600 are provided from the front side F of the storage compartment 2 toward the inside B. As shown in FIG. The article 100 is illuminated from the front side F by the light source 600 located at the front side F. As shown in FIG. The article 100 can be easily seen by the light shining from the front side F. FIG. However, since the article 100 is illuminated by the light source 600 of the front side F, shadows may occur on the inner side B of the article 100.

In this embodiment, as shown in FIG. 5B, the light source 600 is also disposed inside B. As shown in FIG. By the light source 600 located in the inner side B, light is emitted to the shadow located in the inner side B of the article 100. As a result, the storage chamber 2 as a whole becomes bright. In particular, since the back portion 2B becomes bright, the user can feel bright overall by the light diffused and reflected from the back portion 2B.

In the present embodiment, as shown in FIG. 1, the left third in which a plurality of light sources 600 are arranged side by side from the front side F toward the inside B also in the upper surface portion 2U of the storage chamber 2. The lighting unit 60L3 and the right third lighting unit 60R3 are provided. The content and configuration of the lighting unit 60 may be similarly applied to the left third lighting unit 60L3 and the right third lighting unit 60R3.

The illumination part 60 of this embodiment is set so that the angle of the optical axis Bm may be 20 degrees or more and 60 degrees or less with respect to the vertical axis S. FIG. The light emitted from the illumination unit 60 can mainly be reflected a plurality of times on each side (back portion 2B, left side portion 2L, right side portion 2R) forming the storage chamber 2. For example, as shown by a broken arrow in FIG. 5B, the light reflected from the back portion 2B may again illuminate the right side portion 2R. In the back portion 2B or the right side portion 2R, light can be diffusely reflected. Thus, each side feels brighter. On the other hand, since diffuse reflection is made in each surface and it is not the light which propagates directly from the LED 53, the user does not feel glare by these lights.

In the refrigerator 1 of the present embodiment, the light of the LED 53 does not directly travel from the respective lighting units 60 toward the opening 21 on the front side F where the user is located. Therefore, in the refrigerator 1 according to the first embodiment, the glare of the user can be prevented from occurring, so that the visibility of the article 100 can be improved.

Hereinafter, the refrigerator 1 according to the second embodiment will be described. In the case of the refrigerator 1 according to the second embodiment, the components similar to those of the first embodiment are denoted by the same reference numerals and the detailed description thereof will be omitted.

FIG. 6 is a view illustrating an internal view of a refrigerator according to a second embodiment.

As shown in FIG. 6, the refrigerator 1 according to the second embodiment includes a storage compartment 2 housing the article 100, a door 3 opening and closing the storage compartment 2, and the article 100. This shelf 4 is mounted, and the illumination 5 illuminating the inside of the storage compartment 2 is provided. The refrigerator 1 includes a cooler (not shown) for cooling the inside of the storage compartment 2 and a fan (not shown) for circulating cold air in the storage compartment 2.

In the refrigerator 1 according to the second embodiment, the configuration of the lighting 5 is different from that of the lighting 6 of the first embodiment. Hereinafter, the lighting 5 according to the second embodiment will be described in detail.

The illumination 5 is equipped with the left 1st illumination part 50L1 provided in the front side F of the left side part 2L, and the left 2nd illumination part 50L2 provided in the inner side B of the left side part 2L. Include. The lighting 5 includes a right first lighting unit 50R1 provided at the front side F of the right side surface portion 2R, and a right second lighting unit 50R2 installed at the inner side B of the right side surface portion 2R. do. Moreover, the illumination 5 is the upper 1st illumination part 50U1 arrange | positioned at the front side F of the upper surface part 2U, and the upper 2nd illumination part 50U2 provided in the inner side B of the upper surface part 2U. It includes.

The left first lighting unit 50L1, the left second lighting unit 50L2, the right first lighting unit 50R1, the right second lighting unit 50R2, the upper first lighting unit 50U1, and the upper second lighting unit 50U2 are the same. It has a structure. In the following, when there is no need to distinguish these, it is simply referred to simply as "lighting part 50".

As shown in Fig. 6, the left side portion 2L, the right side portion 2R, and the upper surface portion 2U of the refrigerator 1 of this embodiment have a front side F (near the opening 21) and an inner side ( Illumination part 50 is arrange | positioned at B) (near back part 2B), respectively.

7A and 7B are views illustrating an illumination unit according to a second embodiment.

In FIG. 7A, the right first lighting unit 50R1 is illustrated as an example of the lighting unit 50. FIG. 7B shows a section VIIb-VIIb of the lighting unit 50 shown in FIG. 7A.

8A and 8B show a lens member according to the second embodiment.

8A and 8B are cross-sectional views when the lighting unit 50 is cut along the front and rear directions, respectively.

As shown in FIGS. 7A and 7B, the lighting unit 50 includes a case 51 and a cover member 52 covering the case 51. The lighting unit 50 includes a plurality of light emitting diodes (LEDs) 53 for emitting light, a substrate 54 on which the LEDs 53 are mounted, and a lens member 55 for controlling the light emitted by the LEDs 53. Include.

The lens member 55 may be provided to extend in one direction as illustrated in FIG. 7A. In detail, in the left side surface portion 2L and the right side surface portion 2R (see FIG. 6), the lens member 55 extends long along the vertical direction. In the upper surface portion 2U (see FIG. 6), the lens member 55 extends long along the left and right directions.

In the present embodiment, the lighting unit 50 includes a plurality of LEDs 53 and a lens member 55 that is provided singly. The lens member 55 collectively controls the light emitted from the plurality of LEDs 53. The lens member 55 distributes the light emitted from the LED 53 toward the inside B of the storage compartment 2 and prevents the light emitted from the LED 53 from traveling toward the front side F. To control.

In this embodiment, the material of the lens member 55 may be a resin such as PC (polycarbonate resin), PMMA (polymethyl methacrylate resin), glass, or the like.

The lens member 55 has the hollow part 55C in a cross section as shown in FIG. 8A. The lens member 55 accommodates the LED 53 inside the hollow part 55C. Hereinafter, the surface on the hollow part 55C side is called the "inner surface" of the lens member 55 and the outer surface is called the "outer surface" of the lens member 55.

The lens member 55 is a region that polarizes the light from the LED 53 to control light distribution. The lens member 55 is broadly divided into three regions. That is, the lens member 55 includes a plurality of regions. The lens member 55 includes a first region 551, a second region 552, and a third region 553. The first region 551, the second region 552, and the third region 553 may be located in order from the inner side B toward the front side F. FIG.

The first region 551, the second region 552, and the third region 553 of the second embodiment include the first region 651, the second region 652, and the third region 653 of the first embodiment. Each has a similar function. Also in the illumination unit 50 of the second embodiment, the lens member 55 causes the light emitted by each LED 53 to travel toward the inside B, and the front side F of the light emitted from each LED 53. To prevent progression.

As shown in FIG. 8A, the lens member 55 makes the illuminance uniform in the virtual plane forming the vertical axis S. FIG. The lens member 55 controls light distribution so that the illuminance in the left and right directions of the back portion 2B is uniform. In addition, in all areas in the storage chamber 2, the illuminance is not uneven, but is made bright overall.

As shown in FIG. 8B, the lens member 55 controls the light emitted from the LED 53 such that the optical axis Bm is 30 ° or more and 60 ° or less with respect to the vertical axis S. As shown in FIG.

9A and 9B are views for explaining features of the lighting unit according to the second embodiment.

In the present embodiment, the illuminance in the left and right directions of the rear surface portion 2B is equalized by allowing the angle of the light having the maximum luminance to exist within a range of 30 ° to 60 ° with respect to the vertical axis S. FIG. Hereinafter, as shown in FIGS. 9A and 9B, the angle of the optical axis Bm is set to 30 ° or more and 60 ° or less with respect to the vertical axis S in the left first illumination unit 50L1, and the right first illumination unit ( The case where the angle of the light having the maximum luminance in 50R1) is set to 30 ° or more and 60 ° or less will be described.

First, as shown in FIG. 9A, the case where the angle of the optical axis Bm is set to 30 ° with respect to the vertical axis S will be described. In this case, the optical axis Bm of the left first illumination part 50L1 faces the corner of the right side R at the rear part 2B. The range projected by the left first illumination part 50L1 spans the left and right directions of the rear part 2B. Similarly, the optical axis Bm of the right 1st illumination part 50R1 faces the corner of the left side L in the back part 2B. The range projected by the right first illumination unit 50R1 spans the left and right directions of the back portion 2B.

In addition, as shown in FIG. 9B, the case where the angle of the optical axis Bm is set to 60 ° with respect to the vertical axis S will be described. In this case, the optical axis Bm of the left first illumination part 50L1 is directed toward the center in the left and right direction at the rear part 2B. And the range projected by the left 1st illumination part 50L1 becomes the corner of the left side L from the center part. Similarly, the optical axis Bm of the right 1st illumination part 50R1 faces the center part of the left-right direction in the back part 2B. And the range projected by the right 1st illumination part 50R1 becomes the corner of the right side R from the center part.

As shown in FIG. 9A, when the angle of the optical axis Bm is 30 °, the irradiation range of the light of the left first illumination part 50L1 and the right first illumination part 50R1 with respect to the rear part 2B is the optical axis Bm. ) Is a wide range compared to the case where the angle of 60). Therefore, when the angle of the optical axis Bm is 30 degrees, the back part 2B is illuminated by the light of both the left 1st illumination part 50L1 and the right 1st illumination part 50R1.

As shown in FIG. 9B, when the angle of the optical axis Bm is 60 °, the irradiation range of the light from the left first illumination unit 50L1 and the right first illumination unit 50R1 with respect to the back portion 2B is determined by the optical axis ( It becomes a narrow range compared with the case where the angle of Bm) is 30 degrees. However, when the angle of the optical axis Bm is 60 degrees, the back part 2B is illuminated by half by the left 1st illumination part 50L1 and the right 1st illumination part 50R1.

Therefore, when the angle of the optical axis Bm is 30 degrees and the angle of the optical axis Bm is 60 degrees, the illuminance of the back surface part 2B becomes equal.

As described above, the lighting unit 50 of the second embodiment may be set such that the angle of the optical axis Bm of the lighting unit 50 is 30 ° or more and 60 ° or less with respect to the vertical axis S. As such, the optical axis Bm may be in the center portion from the corner of the left side L or the corner of the right side R of the back portion 2B. As described above, irrespective of the angle of the optical axis Bm, the illuminance of the rear surface portion 2B is uniform.

In this embodiment, the illumination part 50 illuminates the back part 2B evenly.

Usually, irrespective of the size (capacity) of the refrigerator 1, the ratio (the so-called aspect ratio) of the length in the left-right direction and the front-back direction is similar. Therefore, the above-described numerical range can be applied regardless of the size (capacity) of the refrigerator 1.

Hereinafter, the refrigerator 1 to which the third embodiment is applied will be described. In the third embodiment, components similar to those of the other embodiments are denoted by the same reference numerals and detailed description thereof will be omitted.

10A and 10B illustrate a lighting unit according to a third embodiment.

10A is a view of one of the left and right directions of the lighting unit 70, and FIG. 10B is a cross-sectional view of the lighting unit 70 shown in FIG. 10A.

The refrigerator 1 of the third embodiment includes a lighting unit 70 similar in configuration to the lighting unit 60 instead of the lighting unit 60 of the first embodiment. However, the lighting unit 70 has a reflective member 165 instead of the lens member 65 of the lighting unit 60 of the first embodiment. Hereinafter, the reflective member 165 will be described in detail.

The reflective member 165 includes a plurality of reflecting portions 165R. Each reflecting portion 165R is provided in a semicircular arc dome shape. The reflecting portion 165R is disposed on the front side F of the LED 53 and is provided so that the opening faces the inside B. As shown in FIG. The surface of the reflecting unit 165R may be provided using a material that reflects light of at least a visible light region among wavelengths of light emitted by the LED 53. A plurality of reflecting units 165R are provided to be provided in the plurality of LEDs 53, respectively.

In the third embodiment, each reflecting portion 165R directs the light emitted from the LED 53 toward the inside B of the storage compartment 2, and the light emitted from the LED 53 is directed to the front side F. As shown in FIG. To proceed). At this time, the angle of the optical axis Bm may be set to be within a range of 30 ° or more and 60 ° to the vertical axis S.

In addition, similar to the lens member 65 of the first embodiment, the reflecting member 165 forms a light distribution pattern having a shape symmetrical with respect to the optical axis Bm (light rays to be the maximum luminance). More specifically, the reflective member 165 forms a light distribution pattern having a substantially conical shape in which the light distribution angle is narrow.

By the lighting unit 70 of the third embodiment configured as described above, the user feels the inside of the storage compartment 2 bright. By the illuminating section 70 of the third embodiment, the hunt effect is realized by irradiation of spot light by the illuminating section 70, so that the article 100 can be seen clearly.

The reflecting portion 165R prevents the light emitted from the LED 53 from traveling to the front side F. As shown in FIG. Since the light emitted from the LED 53 does not proceed toward the opening 21 side where the user is located, the glare of the user can be reduced, and the user can see the article 100 in the storage compartment 2 more easily. .

In the illumination unit 50 of the second embodiment, the reflective member 165 of the third embodiment may be applied instead of the lens member 55.

Hereinafter, the refrigerator 1 to which the fourth embodiment is applied will be described. On the other hand, in the fourth embodiment, components similar to those of the other embodiments are denoted by the same reference numerals and detailed description thereof will be omitted.

11A and 11B are views illustrating an illumination unit according to a fourth embodiment.

FIG. 11A is a view seen from one of the left and right directions of the lighting unit 80, and FIG. 11B is a cross-sectional view of XIb-XIb shown in FIG. 11A.

The refrigerator 1 of the fourth embodiment includes a lighting unit 80 having a configuration similar to that of the lighting unit 50 of the second embodiment, instead of the lighting unit 50 of the second embodiment.

The lighting unit 80 includes a plurality of light sources 600, and the light sources 600 are disposed to extend in the vertical direction. The light source 600 includes an LED 53 and a lens member 65. In the lighting unit 80, each light source 600 directs the light emitted from the LED 53 toward the inside B of the storage compartment 2, and the light emitted from the LED 53 directs the front side F. To prevent progression.

In each light source 600, the lens member 65 controls light distribution so that the optical axis Bm may be in a range of 30 degrees or more and 60 degrees or less with respect to the vertical axis S. FIG.

In each light source 600, the lens member 65 forms the light distribution pattern which made the optical axis Bm (light ray to become the maximum luminance) rotationally symmetric. Specifically, the lens member 65 forms a substantially conical light distribution pattern in which the light distribution angle is narrow.

The entire interior of the storage compartment 2 may be brightened by the lighting unit 80 of the fourth embodiment. The illumination unit 80 of the fourth embodiment makes the article 100 clearly visible by the spot light distribution pattern. In addition, the glare of the user is reduced by the illumination unit 80, and the user can easily see the article 100 in the storage compartment 2.

Hereinafter, the refrigerator 1 according to the fifth embodiment will be described. In the fifth embodiment, components similar to those in the other embodiments are denoted by the same reference numerals and detailed description thereof will be omitted.

12 is a view showing a lighting unit according to a fifth embodiment.

12, the illumination part 90 is cut | disconnected along the front-back direction and the left-right direction, and sectional drawing seen from the up-down direction is shown.

The refrigerator 1 of the fifth embodiment has an illumination unit 90 instead of the illumination unit 50 (see FIG. 6) of the second embodiment.

As shown in FIG. 12, the lighting unit 90 includes an LED 53, a substrate 54, and a case 91. The lighting unit 90 includes a cover member 92 that covers the case, a polarizing lens member 93 that controls the light emitted by the LED 53, and a reflective member 94 that reflects the light emitted by the LED 53. Include.

The lighting unit 90 of the fifth embodiment directs the light-emitting LED 53 (an example of a light emitting element) and the light from the LED 53 toward the inside B (one side) of the storage chamber 2, And a polarizing lens member 93 (an example of an optical member) for preventing the light emitted from the LED 53 from traveling toward the front side F (one side). The lighting unit 90 illuminates the inside of the storage compartment 2.

In the fifth embodiment, the LED 53 and the substrate 54 are provided with their respective main surfaces 53S and 54S parallel to the vertical axis S. The optical axis 53bm of LED 53 becomes the front-back direction of 2 L of left side parts (even when it is provided in right side part 2R and upper surface part 2U) of the storage chamber 2.

On the other hand, the optical axis 53bm is a direction in which the light ray with the maximum brightness is directed among the light emitted from the LED 53. In the present embodiment, the optical axis 53bm is in a direction perpendicular to the main surface 53S of the LED 53 (about 89 ° to about 91 °).

The case 91 houses a plurality of LEDs 53 and a substrate 54 inside. And the case 91 is attached so that it may be embedded in 2 L of left side parts (even if it is installed in 2 R of right side parts, upper surface part 2U) of the storage chamber 2.

The cover member 92 is provided to cover the opening of the case 91. The cover member 92 blocks the LED 53, the substrate 54, the polarizing lens member 93, and the reflective member 94 from the outside of the case 91. In addition, the cover member 92 has transparency to visible light at least among the light emitted from the LED 53. As the material of the cover member 92, a resin such as PC (polycarbonate), PMMA (polymethyl methacrylate resin) or the like may be used.

The cover member 92 has a first cover portion 921 (an example of the first diffusion portion) and a second cover portion 922 (an example of the second diffusion portion) provided in parallel with the first cover portion 921. . Each of the first cover part 921 and the second cover part 922 extends in one direction. A plurality of first cover parts 921 and second cover parts 922 may be installed. As shown in FIG. 12, the second cover part 922 and the first cover part 921 may be integrally formed. The second cover part 922 and the first cover part 921 are alternately arranged side by side in the front-rear direction.

In the illumination unit 90 illustrated in FIG. 12, the linear first cover part 921 extending in the vertical direction and the linear second cover part 922 extending in the vertical direction alternate alternately in the front-rear direction. It is provided to be positioned.

The first cover part 921 is provided with a light diffusion degree lower than that of the second cover part 922. On the other hand, the first cover portion 921 may be provided so as not to substantially cause light diffusion.

The second cover part 922 is provided with a higher degree of light diffusion than the first cover part 921. That is, in the fifth embodiment, when the diffusion degree of the first cover part 921 is set to C1 and the diffusion degree of the second cover part 922 is set to C2, the relationship of C2> C1 ≧ 0 is provided.

The cross section of the second cover portion 922 may be formed to have a predetermined angle θc with respect to the vertical axis S (vertical axes with respect to the directions of one side and the other side in a predetermined space). In the fifth embodiment, the cross section of the second cover portion 922 is provided such that the angle θc is about 45 ° with respect to the vertical axis S. FIG. On the other hand, the cross section of the second cover portion 922 may have an angle θc with respect to the vertical axis S in a range of 20 ° or more and 60 ° or less.

As shown in FIG. 12, the first cover part 921 and the second cover part 922 are not limited to being integrally formed, and the first cover part 921 and the second cover part 922 are respectively formed. It may be comprised by a separate member. When configured as a separate member, the first cover portion 921 and the second cover portion 922 may be positioned side by side in the left and right directions. In this case, the second cover part 922 may be disposed on the left side L or the right side R of the first cover part 921 in the left and right directions, and the left side L of the first cover part 921. And the right side R may be disposed on both sides.

The polarizing lens member 93 is positioned to face the LED 53 at the inner side B of the LED 53. The polarizing lens member 93 opposes the half region of the storage chamber 2 side (right side R in the example of FIG. 12) with respect to the optical axis 53bm of the LED 53. On the other hand, the polarizing lens member 93 is not located in the half region of the opposite side (the left side L in the example of FIG. 12) of the storage chamber 2 with respect to the optical axis 53bm of LED53.

The polarizing lens member 93 has a transparency which transmits visible light among at least the light emitted from the LED 53. The polarizing lens member 93 includes a first lens portion 931 and a second lens portion 932. The polarization lens member 93 controls the light emitted from the LED 53 so that light directed toward the inside of the storage compartment 2 with respect to the optical axis 53bm of the LED 53 is directed toward the opposite direction inside the storage compartment 2. do.

The first lens portion 931 is a portion extending in a direction parallel to the optical axis 53bm of the LED 53. The end surface 931f of the front side F and the end surface 931b of the inner side B of the first lens portion 931 are formed perpendicular to the optical axis 53bm, respectively. The first lens unit 931 propagates the light emitted by the LED 53 inward B along the optical axis 53bm.

The second lens unit 932 polarizes, by total reflection, light that is about to proceed directly toward the inside of the storage chamber 2 than the optical axis 53bm of the LED 53 among the light emitted by the LED 53. The second lens unit 932 propagates the light emitted by the LED 53 toward the reflective member 94.

On the other hand, the polarizing lens member 93 is not located in the half region of the left side L with respect to the optical axis 53bm of the LED 53. Therefore, the polarizing lens member 93 advances the light which propagates toward the reflecting member 94 rather than the optical axis 53bm of the LED 53 among the light which the LED 53 emits toward the reflecting member 94 as it is. .

The reflecting member 94 has a reflecting surface that reflects light of the LED 53. The reflective member 94 of the fifth embodiment is provided with a curved surface concave toward the storage chamber 2 side. The reflective member 94 is provided to face the cover member 92. The reflecting member 94 reflects the light emitted by the LED 53 toward the inside of the storage chamber 2.

The reflective member 94 of the fifth embodiment has two regions. Specifically, the reflective member 94 has a first reflective region 941 which is a reflective surface formed on the inner side B, and a second reflective region 942 which is a reflective surface formed on the front side F. As shown in FIG.

The angle θ1 formed by the first reflective region 941 with respect to the optical axis 53bm is greater than the angle θ2 formed with respect to the optical axis 53bm of the second reflective region 942 (θ1> θ2). As the angle of the reflecting surface of the reflecting member 94 moves away from the LED 53, the angle formed with respect to the optical axis 53bm may be gradually increased.

On the other hand, the reflecting surface of the reflecting member 94 is not limited to being curved, but may be formed by joining a plurality of planes.

The polarizing lens member 93 and the reflecting member 94 configured as described above advance the light emitted from the LED 53 toward the cover member 92 at a predetermined angle toward the inside B. FIG. In the fifth embodiment, the polarizing lens member 93 and the reflecting member 94 propagate the light from the LED 53 to about 45 ° with respect to the vertical axis S toward the inner side B. As shown in FIG. On the other hand, the polarizing lens member 93 and the reflecting member 94 can control the light emitted from the LED 53 to proceed in the range of 20 ° or more and 60 ° or less with respect to the vertical axis S toward the inside B. Can be.

13 is a view showing a lighting unit according to a fifth embodiment.

As shown in FIG. 13, light emitted from the LED 53 along the optical axis 53bm is incident on the first lens portion 931 of the polarizing lens member 93. This light travels along the optical axis 53bm and emerges from the first lens portion 931. This light is then reflected in the first reflective region 941 and travels toward cover member 92.

Light passing through the first lens unit 931 is incident at a small angle with respect to the reflective member 94. Light incident at a small angle with respect to the reflective member 94 is reflected in the first reflective region 941 having a relatively large angle with respect to the optical axis 53bm. Light reflected from the first reflective region 941 travels toward the cover member 92 at a predetermined angle (about 45 ° in the fifth embodiment) with respect to the vertical axis S. FIG.

Light incident from the LED 53 to the second lens unit 932 is totally reflected by the second lens unit 932. The light reflected by the second lens unit 932 travels toward the second reflection area 942. Light reflected from the second reflective region 942 travels toward the cover member 92.

The light reflected by the second lens unit 932 travels at a large angle with respect to the reflective member 94. The light propagated at a large angle with respect to the reflective member 94 is reflected in the second reflective region 942 where the angle formed with respect to the optical axis 53bm is relatively small. The light reflected from the second reflective region 942 travels toward the cover member 92 at a predetermined angle (about 45 ° in the fifth embodiment) with respect to the vertical axis S. FIG.

On the other hand, light emitted from the LED 53 and directed toward the opposite side of the storage chamber 2 (the left (L) side in the example of FIG. 12) rather than the optical axis 53bm proceeds directly to the reflective member 94. Light that has traveled directly to the reflective member 94 is reflected by the reflective member 94. The light reflected from the reflecting member 94 travels toward the cover member 92 at a predetermined angle (about 45 ° in the fifth embodiment) with respect to the vertical axis S. FIG.

In the illumination part 90 of 5th Example, the angle of the reflecting surface of the inner side B of the reflecting member 94 which reflects the light emitted from the LED 53 is provided larger than the front side F. As shown in FIG. As a result, the illumination unit 90 of the fifth embodiment may implement surface emission and uniform emission.

As described above, the light reflected from the reflecting member 94 travels to the cover member 92 at a predetermined angle (about 45 ° in the fifth embodiment) with respect to the vertical axis S. FIG. Here, as shown in FIG. 13, the first cover part 921 has a predetermined angle θc (about 45 ° in the fifth embodiment) on the vertical axis S. Therefore, light incident on the cover member 92 at a predetermined angle (about 45 ° in the fifth embodiment) with respect to the vertical axis S passes through the first cover portion 921. On the other hand, light entering the cover member 92 at an angle different from the predetermined angle with respect to the vertical axis S is incident on the second cover part 922 and becomes scattered light.

The illuminating unit 90 of the fifth embodiment irradiates relatively strong light toward the inside B of the storage chamber 2, and irradiates weak diffused light to the front side F, so that the optical axis Bm is turned inside ( Polarize to B). In this manner, the lighting unit 90 of the fifth embodiment directs the light from the LED 53 toward the inside B of the storage chamber 2 and toward the front side F of the light from the LED 53. Is suppressed.

In addition, in the illumination part 90 of 5th Example, the reflecting member (from the LED 53 is not provided in the opposite side of the storage chamber 2 with respect to the optical axis 53bm of the LED 53, without providing a polarizing lens member 93). 94, directing the light directly. Accordingly, in the illumination unit 90 of the fifth embodiment, the size of the polarizing lens member 93 can be reduced. In addition, the size of the entire lighting unit 90 is reduced. Moreover, the illumination part 90 of 5th Example suppresses the loss by the Fresnel reflection which may be generated by the light permeating through the polarizing lens member 93, and its luminous efficiency is high.

On the other hand, in the illumination part 90 of 5th Example, the polarizing lens member 93 is arrange | positioned rather than the optical axis 53bm of the LED 53 at the storage chamber 2 side. By the polarized light distribution by this polarizing lens member 93, the light which propagates directly from the LED 53 to the cover member 92 is reduced. For this reason, uneven light emission of the light emitting surface in the vicinity of the LED 53 can be prevented.

14A and 14B are views illustrating a lighting unit according to Modification Example 1 and Modification Example 2;

FIG. 14A shows a cross-sectional view of the lighting unit 90 of the first modification, and FIG. 14B shows a cross-sectional view of the lighting unit 90 of the second variation.

As shown in FIG. 14A, the illumination unit 90 of the first modification is different from the reflection member 94 of the fifth embodiment in the shape of the reflection member 194. Hereinafter, the reflective member 194 will be described.

The reflection member 194 is formed in a planar shape of the reflection surface. That is, the cross section of the reflective member 194 is formed in linear form. The reflection member 194 has a constant angle with respect to the optical axis 53bm of the reflection surface in the front-rear direction, for example. The reflective member 194 reflects the light from the LED 53 toward the storage chamber 2 side.

Also in the illumination part 90 of this modification 1, the light from LED 53 advances toward the inside B of the storage compartment 2, and the light from LED 53 advances toward the front side F. FIG. Can be prevented.

As shown in FIG. 14B, the lighting unit 90 of the second modification differs in the shape of the reflective member 294 from the reflective member 94 of the fifth embodiment described above. Hereinafter, the reflective member 294 will be described.

The reflection member 294 is formed in a curved shape in which the shape of the reflection surface is convex toward the storage chamber 2 side. Moreover, the front side F is large in the reflection member 294 with respect to the optical axis 53bm, compared with the inner side B. As shown in FIG. The reflecting member 294 reflects the light from the LED 53 toward the storage compartment 2 side.

Also in the illumination part 90 of this modification 2, the light from LED 53 advances toward the inside B of the storage chamber 2, and the light from LED 53 advances toward the front side F. Can be prevented.

Also in the modification 2, the reflecting surface of the reflecting member 294 is not limited to being curved, and a plurality of planes may be joined to each other.

15A and 15B are views illustrating a lighting unit according to Modification Example 3 and Modification Example 4. FIG.

15A shows a cross-sectional view of the illumination unit 90 of the third modification, and FIG. 15B shows a cross-sectional view of the illumination unit 90 of the fourth modification.

As shown in FIG. 15A, the lighting unit 90 of the third modification is different in shape from the cover member 392 from the cover member 92 of the fifth embodiment. Hereinafter, the cover member 392 will be described.

The cover member 392 may be prism-cut to the light incident surface side serving as the side opposite to the reflective member 94. Specifically, each of the first cover portion 921 may be formed with a V-shaped convex portion 392P. And each convex part 392P forms the surface orthogonal (theta) p (about 89 degrees-91 degrees) with respect to the 2nd cover part 922 which makes a predetermined angle with respect to the vertical axis S. As shown in FIG. Therefore, the light reflected by the reflective member 94 may be incident perpendicularly to the first cover part 921.

The lighting unit 90 of the third modification can reduce the loss due to Fresnel reflection which may occur when the light reflected by the reflecting member 94 is incident on the cover member 392.

As shown in FIG. 15B, the illumination unit 90 of the fourth modification includes a second reflecting member 95 instead of the polarizing lens member 93 described above.

The second reflecting member 95 may be located in front of the LED 53. The 2nd reflective member 95 is provided in the storage chamber 2 side (right side R in the example of FIG. 15) with respect to LED53. The second reflecting member 95 injects light, which is about to travel toward the inside of the storage chamber 2, from the light emitted from the LED 53 into the reflective reflecting member 94.

Also in the illumination unit 90 of this modification 4, the light emitted from the LED 53 is directed toward the inside B of the storage compartment 2, and the light emitted from the LED 53 is directed to the front side F. FIG. Can be prevented from proceeding.

In this way, the entire interior of the storage compartment 2 can be brightened by the illumination unit 90 of the fifth embodiment. By the illumination unit 90, the glare of the user can be reduced, and the user can easily see the article 100 in the storage compartment 2.

The illumination unit 90 of the fifth embodiment is arranged such that the plurality of LEDs 53 are arranged side by side in the vertical direction, and the example of controlling the light of the LEDs 53 has been described as described above. However, the present invention is not limited to this example. For example, as in the first embodiment, the configuration may be such that the plurality of LEDs 53 are arranged side by side in the front-rear direction. That is, the cover member 92 (cover member 392), the polarizing lens member 93, the reflecting member 94 (the reflecting member 194, the reflecting member 294), and the second reflecting member 95 are used. By doing this, the light of the LED 53 can be controlled.

Hereinafter, the refrigerator 1 to which the sixth embodiment is applied will be described. On the other hand, in the sixth embodiment, components similar to those in the other embodiments will be denoted by the same reference numerals and detailed description thereof will be omitted.

16 is a view showing a lighting unit according to a sixth embodiment.

16, the illumination part 690 is cut | disconnected along the front-back direction and the left-right direction, and sectional drawing seen from the up-down direction is shown.

The refrigerator 1 of the sixth embodiment has an lighting unit 690 instead of the lighting unit 90 (see Fig. 12) of the fifth embodiment. Hereinafter, the lighting unit 690 will be described in detail.

As shown in FIG. 16, the lighting unit 690 includes an LED chip 153 that emits electricity by energization, a substrate 54, and a case 91. The lighting unit 690 includes a cover member 692 covering the case and a wavelength conversion member 96 (an example of the wavelength conversion unit) provided to face the LED chip 153. In addition, the illumination part 690 includes the reflection member 94 (an example of an optical part) and the 2nd reflection member 95 (an example of an optical part).

The LED chip 153 is a semiconductor chip that emits blue light. In the sixth embodiment, the LED chip 153 is electrically connected to the substrate 54 by wire bonding mounting (not shown).

In the sixth embodiment, the LED chip 153 and the substrate 54 are provided with their respective major surfaces 153S and 154S in parallel with the vertical axis S. FIG. The optical axis 153bm of the LED chip 153 is in the front-rear direction of the left side part 2L (even when it is provided in the right side part 2R and the upper surface part 2U) of the storage chamber 2.

The cover member 692 is provided to cover the opening of the case 91. The cover member 92 blocks the LED chip 153, the substrate 54, the reflective member 94, the second reflective member 95, and the wavelength conversion member 96 from the outside of the case 91. The cover member 692 has at least transmittance to visible light among the light emitted from the LED chip 153 and the wavelength conversion member 96.

As the material of the cover member 692, a resin such as PC (polycarbonate), PMMA (polymethyl methacrylate resin), or the like may be used.

The wavelength conversion member 96 is a transparent resin coated with a phosphor that absorbs the light emitted by the LED chip 153 and emits light having a long wavelength. Specifically, the wavelength conversion member 96 includes a green fluorescent part 961 that absorbs blue light and emits green light. The wavelength conversion member 96 has a red fluorescent portion 962 that absorbs blue light and emits red light. The green fluorescent part 961 and the red fluorescent part 962 are each formed in plate shape. The green fluorescent part 961 and the red fluorescent part 962 are fixed in close contact with each other.

The wavelength conversion member 96 may be constituted by one transparent resin member coated on opposite surfaces with a phosphor that absorbs blue light and emits green light and a phosphor that absorbs blue light and emits red light. The combination of the wavelength emitted by the light source and the wavelength emitted by the phosphor is not limited to this embodiment, and other combinations may be used.

The wavelength conversion member 96 is fixed in position by a support member (not shown). The wavelength conversion member 96 has its main surface 96S disposed in parallel with the vertical axis S. FIG. That is, the main surface 96S of the wavelength conversion member 96 is disposed in parallel with the main surface 153S of the LED chip 153. In addition, the wavelength conversion member 96 is provided spaced apart from the LED chip 153 by a predetermined interval.

The wavelength conversion member 96 forms the first gap G1 (an example of the non-passing portion) between the reflection member 94 in the direction (left and right direction in this embodiment) of the main surface 96S. Moreover, the wavelength conversion member 96 forms the 2nd clearance gap G2 (an example of a non-passing part) between the 2nd reflecting members 95 in the direction (left and right direction in this embodiment) of the main surface 96S. do. That is, the first gap G1 or the second gap G2 is formed between the wavelength conversion member 96 and the configuration adjacent to each other. Light emitted by the LED chip 153 may pass through the first gap G1 and the second gap G2.

In the sixth embodiment, the wavelength conversion member 96 mainly divides the space formed by the reflective member 94 and the cover member 692 into two. In the lighting unit 690, a first space C1 (an example of the first space part) is formed between the wavelength conversion member 96 and the LED chip 153. In the illumination unit 690, the second space C2 (an example of the second space part) is formed on the side opposite to the LED chip 153 with respect to the wavelength conversion member 96. That is, the second space C2 is formed in a direction opposite to the first space C1 around the wavelength conversion member 96.

In detail, the first space C1 is a space surrounded by the wavelength conversion member 96, the reflective member 94, the second reflective member 95, the LED chip 153, and the substrate 54. The second space C2 is a space surrounded by the wavelength conversion member 96, the reflective member 94, and the cover member 692.

In the sixth embodiment, the boundary between the first space C1 and the second space C2 is formed by the wavelength conversion member 96. The boundary between the first space C1 and the second space C2 is formed by a straight imaginary line I connecting the wavelength conversion member 96 and the reflective member 94 at the shortest distance. The boundary is formed by a straight imaginary line I connecting the wavelength converting member 96 and the second reflecting member 95 at the shortest distance.

As shown in FIG. 16, the cross-sectional area of the first space C1 is smaller than the cross-sectional area of the second space C2. That is, the volume of the 1st space C1 becomes small compared with the volume of the 2nd space C2.

On the other hand, the cross-sectional area of the first space C1 mainly contributes to the length in the left-right direction in the cross section (the plane along the front-back direction and the left-right direction) of the wavelength conversion member 96. In addition, the cross-sectional area of the second space C2 mainly contributes to the length in the front-rear direction in the cross section of the cover member 692. Therefore, in the sixth embodiment, the length in the left-right direction of the wavelength conversion member 96 is shorter than the length in the front-rear direction of the cover member 692.

17 is a view for explaining an illumination unit according to a sixth embodiment.

As shown in FIG. 17, light emitted from the LED chip 153 passes through the first space C1 and is incident to the wavelength conversion member 96. The blue light emitted from the LED chip 153 is converted into red light or green light by the wavelength conversion member 96. Further, the red light and the green light reach the second space C2 formed in the inner side B of the wavelength conversion member 96.

In addition, among the light emitted from the LED chip 153, the light directed toward the first gap G1 travels toward the reflective member 94 without passing through the wavelength conversion member 96. That is, the blue light passing through the first gap G1 is reflected by the reflective member 94 while the wavelength is not converted by the wavelength conversion member 96 and is blue light. The blue light passing through the first gap G1 reaches the second space C2.

In addition, among the light emitted from the LED chip 153, the light directed toward the second gap G2 travels toward the second reflecting member 95 without passing through the wavelength conversion member 96. That is, the blue light passing through the second gap G2 is reflected by the second reflecting member 95 while the wavelength is not converted by the wavelength converting member 96 and is blue light. The blue light passing through the second gap G2 reaches the second space C2.

In the second space C2, red light and green light that have passed through the wavelength conversion member 96 and blue light that have traveled without passing through the wavelength conversion member 96 are mixed to form white light. Then, as described with reference to the fifth embodiment, these lights are reflected by the reflecting member 94 and the like, and pass through the cover member 692 toward the inside B of the storage chamber 2.

By the illumination part 690 of 6th Example comprised as mentioned above, the whole inside of the storage compartment 2 becomes bright. Moreover, the glare of a user is reduced by the illumination part 690, and it becomes easier to see the article 100 (refer FIG. 6) in the storage chamber 2. As shown in FIG.

In the lighting unit 690, since the second space C2 is large relative to the first space C1, a volume sufficient to mix red light, green light, and blue light is ensured. On the other hand, since the first space C1 is small, the wavelength conversion member 96 is disposed near the LED chip 153. As a result, the size of the wavelength conversion member 96 is reduced in size. That is, light is radiated radially from the LED chip 153. On the other hand, the size of the wavelength conversion member 96 may be small by arranging the wavelength conversion member 96 close to the LED chip 153. That is, the lighting unit 690 can be miniaturized.

In the lighting unit 690 to which the sixth embodiment is applied, the decrease in optical efficiency is suppressed. Considering the case where all of the blue light from the LED chip 153 passes through the transparent member in which the phosphor is dispersed, the blue light is extracted by the phosphor as light which is not converted into green light or red light. However, since blue light passes through the transparent member, loss of light energy such as Fresnel loss may occur.

In contrast, in the illumination unit 690 of the sixth embodiment, the blue light reaches the second space C2 without passing through the transparent member in which phosphors such as the wavelength conversion member 96 are dispersed. For this reason, the blue light which reached the 2nd space C2 without passing through the wavelength conversion member 96 does not produce the loss of light energy, such as Fresnel loss. Therefore, in the illumination part 690, the fall of optical efficiency is suppressed. As a result, for example, the feeling of brightness in the storage chamber 2 improves.

In the lighting unit 690, the color temperature can be adjusted by changing the size of the first gap G1 or the second gap G2. For example, by reducing the interval between the first gap G1 or the second gap G2, the blue light is reduced and the color temperature is lowered. On the other hand, by increasing the distance between the first gap G1 or the second gap G2, the blue light is increased and the color temperature is increased. As described above, in the sixth embodiment, the color temperature of the lighting unit 690 is easily adjusted by changing the size of the wavelength conversion member 96.

In addition, the structure of the wavelength conversion member 69 is not limited to the above-mentioned example. As the wavelength converting member 96, one obtained by coating a phosphor on a ceramic plate such as glass can be used. The shape of the wavelength conversion member 96 is not limited to the shape mentioned above. The wavelength conversion member 96 may be formed in a convex shape of an arc, or may be irregularities having different plate thicknesses.

Some configurations of the lighting unit 690 described in the sixth embodiment can be applied to other embodiments.

As an example, in another embodiment, when an LED chip emitting monochromatic light is used, the wavelength conversion member 96 may be disposed on the LED chip side. At this time, the wavelength conversion member 96 is separated from the LED chip by a predetermined distance to form a first space. In the wavelength conversion member 96, a second space having a larger cross-sectional area than the first space is formed on the side opposite to the LED chip. In addition, the wavelength conversion member 96 may not be configured to pass all the light from the LED chip, and may be configured so that a part of the light from the LED chip does not pass through the wavelength conversion member 96.

Hereinafter, the refrigerator 1 to which the seventh embodiment is applied will be described. In the seventh embodiment, components similar to those in the other embodiments are denoted by the same reference numerals and detailed description thereof will be omitted.

18A and 18B show a lighting unit according to a seventh embodiment.

18A is a diagram illustrating a front view of the lighting unit 750. 18B is a view showing a cross section of XVIIIb-XVIIIb of the lighting unit 50 shown in FIG. 18A.

The refrigerator 1 of the seventh embodiment has an lighting unit 750 instead of the lighting unit 50 (see FIG. 6) of the second embodiment. Hereinafter, the lighting unit 750 will be described in detail.

As shown in FIGS. 18A and 18B, the lighting unit 750 includes an LED package 530 that emits light, a substrate 54, and a lens member 75 (transmitting unit) disposed to face the LED package 530. An example) and a wavelength conversion member 96 (an example of a wavelength conversion portion).

As shown in FIG. 18A, the lighting unit 750 is provided to have a shape extending in one direction (up and down direction). In detail, the illumination part 750 extends along the up-down direction in the left side part 2L and the right side part 2R (refer FIG. 6).

The LED package 530 is a light source packaged by accommodating the LED chip 153 (an example of a light emitting element) in a container 531 having a concave cross section. Although not shown in the drawing, the container 531 is provided with a lead frame electrically connected to the LED chip 153. Through the lead frame, the LED chip 153 and the substrate 54 are electrically connected. Moreover, the recessed part of the container 531 is filled with transparent sealing resin, and the LED chip 153 is sealed. On the other hand, in the LED package 530, the sealing resin is not filled with phosphor.

The LED package 530 has an angle between the optical axis 530bm (the direction along the light beam that becomes the maximum luminance in the LED package 530 unit) and the vertical axis S (see FIG. 6) from 20 ° to 60 °. It is provided so that it may become a range of degrees or less. That is, the optical axis 530bm is provided to face the inner side B in the front-rear direction. On the other hand, in the present embodiment, the optical axis 530bm is provided perpendicular to the cross section 530A of the LED package 530.

As shown in FIG. 18A, the lens member 75 is provided to have a shape extending in one direction. The lens member 75 is provided singly with respect to the plurality of LED packages 530. The lens member 75 transmits light incident from the LED package 530. That is, the lens member 75 collectively controls the light emitted from the plurality of LED packages 530. On the other hand, the fluorescent substance was not contained in the lens member 75 itself of this embodiment.

In addition, the lens member 75 is fixed to the substrate 54 as shown in FIG. 18B.

The lens member 75 distributes the light from the LED package 530 toward the inside B of the storage compartment 2 and also prevents the light from the LED package 530 toward the front side F of the light from the LED package 530. Control (see FIG. 6).

In this embodiment, resins such as PC (polycarbonate resin), PMMA (polymethyl methacrylate resin), glass, and the like can be used as the material of the lens member 75.

As shown in Fig. 18B, the lens member 75 has a cross section (surface perpendicular to the vertical direction) in a trapezoidal shape. The lens member 75 has a lower portion 751 formed on the LED package 530 side. In addition, the lens member 75 has an upper end 752 provided on the side opposite to the side opposite to the LED package 530. Moreover, the lens member 75 has the side part 753 (an example of an inclination part) formed in the side surface.

The lower portion 751 has a concave portion. The lower portion 751 accommodates the LED package 530 therein. Light emitted from the LED package 530 through the lower portion 751 may be incident into the lens member 75.

The lower portion 751 has a first surface 751t opposite to the end face 530A of the LED package 530 and a second surface 751s opposite to the side surface of the LED package 530. The first surface 751t is provided in parallel with the cross section 530A of the LED package 530. That is, the first surface 751t is formed to be perpendicular to the optical axis 530bm.

Further, in the seventh embodiment, the first surface 751t and the second surface 751s are each provided to have a predetermined gap with respect to the LED package 530. That is, in the lower portion 751, a space 75C is formed between the LED package 530 and a gas such as air.

The upper end portion 752 forms a portion where light incident on the lens member 75 comes out of the lens member 75. In the seventh embodiment, the upper portion 752 is formed parallel to the cross section 530A of the LED package 530, as shown in FIG. 18B. That is, the upper end portion 752 is formed to be perpendicular to the optical axis 530bm.

The upper end portion 752 has an opposing surface 752p facing the wavelength conversion member 96 and an output surface 752n (an example of an output section) that does not oppose the wavelength conversion member 96. As shown in FIG. 18A, the opposing surface 752p extends in one direction (up and down direction) corresponding to the wavelength conversion member 96. The wavelength conversion member 96 is fixed to the opposing surface 752p by adhesion or the like. The output surface 752n is formed on both sides of the opposing surface 752p, respectively. The output surface 752n is formed adjacent to each other on the opposing surface 752p. The two output surfaces 752n are each formed extending in one direction (up and down direction). The output surface 752n bypasses the wavelength conversion member 96 to form a path through which light travels outside the lens member 75.

In the first embodiment, the ratio of the area of the output surface 752n to the area of the upper end 752 is set to 15%. It is preferable that this ratio is 2% or more and 35% or less. More preferably, this ratio may be 5% or more and 30% or less.

By changing the area of the output surface 752n, the color temperature of the light emitted by the illumination unit 750 can be adjusted. For example, as the area of the output surface 752n increases, the color temperature of the light of the illumination unit 750 increases. On the other hand, the smaller the area of the output surface 752n is, the lower the color temperature of light of the lighting unit 750 is.

Sides 753 are formed on both sides, respectively, with respect to the optical axis 530bm of the LED package 530, as shown in FIG. 18B. In addition, the side portion 753 is formed to be wider as it moves away from the LED package 530. In the seventh embodiment, the width L1 farther from the LED package 530 of the side portion 753 is larger than the width L2 farther from the LED package 530. That is, the side portion 753 is formed obliquely at a predetermined angle with respect to the optical axis 530bm.

The side portion 753 totally reflects the light emitted from the LED package 530. The side portion 753 functions as a reflecting surface that reflects the light from the LED package 530 toward the upper portion 752.

19 is a view for explaining an illumination unit according to a seventh embodiment.

As shown in FIG. 19, blue light emitted radially from the LED package 530 passes through the space 75C and enters the lens member 75 from the lower portion 751. At this time, blue light is refracted toward the optical axis 530bm by entering the lens member 75 having a higher density than the space 75C from the space 75C. In addition, blue light traveling from the LED package 530 to the side portion 753 reflects the side portion 753. Blue light from the LED package 530 travels primarily along the optical axis 530bm.

A part of the blue light emitted from the LED package 530 is directed toward the opposing surface 752p. This blue light then passes through the wavelength conversion member 96. At this time, blue light is converted into red light or green light by the wavelength conversion member 96. And the red light and green light come from the lens member 75 and the wavelength conversion member 96.

In addition, among the blue light emitted from the LED package 530, light directed toward the output surface 752n exits from the lens member 75 without passing through the wavelength conversion member 96.

In this manner, red light, green light, and blue light are irradiated from the illumination unit 750. These three colors of light are mixed in the storage chamber 2. As a result, the storage unit 2 is illuminated by the lighting unit 750. As described above, light travels from the lighting unit 750 toward the inside B of the storage chamber 2 (see FIG. 6). In addition, light that is about to face the front side F (see FIG. 6) of the storage chamber 2 from the LED package 530 is reflected at the side portion 753 of the lens member 75. Therefore, light is prevented from advancing toward the front side of the storage compartment 2 from the lighting unit 750.

The illumination part 750 of 7th Example provided in this way makes the whole inside the storage chamber 2 bright. This illumination 750 reduces glare of the user and makes it easier for the user to see the article 100 (see FIG. 6) in the storage compartment 2.

Fine concavities and convexities may be formed on the output surface 752n, and the light diffusion of the output surface 752n may be increased. The extraction efficiency of light from the output surface 752n may be increased. In this case, the light diffusivity of the output surface 752n may be provided to be equal to the light diffusivity of the wavelength conversion member 96.

The side portion 753 functions as a reflecting surface of light from the LED package 530. For this reason, it is preferable that the side part 753 has a small light diffusivity. Therefore, the light diffusing degree of the output surface 752n may be larger than the light diffusing degree of the side portion 753.

In the lighting unit 750 to which the seventh embodiment is applied, the decrease in optical efficiency is suppressed. The case where all the blue light from the LED chip 153 passes through the transparent member which disperse | distributed fluorescent substance is considered. In this case, blue light is taken out as light which is not converted into green light or red light by the phosphor. However, since this blue light passes through the transparent member, loss of light energy such as Fresnel loss may occur.

In contrast, in the illumination unit 750 of the seventh embodiment, blue light is output without passing through transparent members in which phosphors such as the wavelength conversion member 96 are dispersed. Therefore, blue light output without passing through the wavelength conversion member 96 does not cause loss of light energy such as Fresnel loss. Therefore, in the illumination part 750, the fall of optical efficiency is suppressed. As a result, for example, the feeling of brightness in the storage chamber 2 improves.

In addition, the light emitted radially from the LED package 530 is narrowed to the optical axis 530bm side by the lens member 75 as described above. The wavelength conversion member 96 is disposed at the upper end 752 of the lens member 75. For this reason, in the seventh embodiment, the width in the direction perpendicular to the optical axis 530bm of the wavelength conversion member 96 can be reduced. That is, the lighting unit 750 can be miniaturized.

In the seventh embodiment, the wavelength conversion member 96 is fixed to the lens member 75. That is, the wavelength conversion member 96 is self-supporting. Thereby, it is unnecessary to provide a support member for supporting the wavelength conversion member 96 separately, and the number of parts is reduced.

Meanwhile, as illustrated in FIG. 1, the lighting unit 750 of the seventh embodiment may be arranged to extend from the front side F toward the inside B in the front-rear direction. In this case, light travels from the lighting unit 750 toward the inside B of the storage chamber 2, and the direction of the lens member 75 can be set so as to suppress the progress of the light toward the front side F. FIG. Moreover, you may apply some structure of the illumination part 750 described in 7th Example to another Example.

Hereinafter, the refrigerator 1 to which the eighth embodiment is applied will be described. In the eighth embodiment, components similar to those in the other embodiments will be denoted by the same reference numerals and detailed description thereof will be omitted.

20A and 20B are diagrams illustrating a lighting unit according to an eighth embodiment.

20A is a cross-sectional view of the lighting unit 890 cut along the front-back direction and the left-right direction and viewed from the up-down direction. 20B shows an overall configuration diagram of the light emitting unit 850 provided in the lighting unit 890.

The refrigerator 1 of the eighth embodiment has the lighting unit 890 instead of the lighting unit 90 (see Fig. 12) of the fifth embodiment. Hereinafter, the lighting unit 890 will be described in detail.

As shown in FIG. 20A, the lighting unit 890 includes a light emitting unit 850 that emits light, and a case 91. In addition, the lighting unit 890 includes a cover member 692, a reflective member 94, and a second reflective member 95.

The lighting unit 890 is provided in a shape extending in one direction. In detail, the illumination part 890 extends along the up-down direction in the left side part 2L and the right side part 2R (refer FIG. 6).

The light emitting unit 850 has a basic configuration similar to that of the lighting unit 750 of the seventh embodiment. The light emitting unit 850 has an LED package 530 and a substrate 54, as shown in FIG. 20B. In addition, the light emitting unit 850 includes a lens member 85 and a wavelength conversion member 96 provided to face the LED package 530.

The lens member 85 is provided in a shape extending in one direction. In addition, the lens member 85 is provided singly with respect to the plurality of LED packages 530. The lens member 85 transmits light incident from the LED package 530. On the other hand, the fluorescent substance was not contained in the lens member 85 itself of this embodiment. The lens member 85 is fixed to the substrate 54.

In this embodiment, the material of the lens member 85 may be a resin such as PC (polycarbonate resin), PMMA (polymethyl methacrylate resin), glass, or the like.

The lens member 85 is formed in a rectangular shape in a cross section (surface perpendicular to the vertical direction), as shown in Fig. 20B. The lens member 85 has a bottom portion 851 installed on the LED package 530 side. The lens member 85 has an upper end portion 852 installed on the side opposite to the side opposite to the LED package 530. The lens member 85 has a side portion 853 provided on the side surface.

The lower portion 851 has the same basic configuration as the lower portion 751 of the seventh embodiment. Lower portion 851 has a recessed portion. The lower portion 851 receives the LED package 530 therein. Light emitted from the LED package 530 through the lower portion 851 may be incident into the lens member 85. At the lower portion 851, a space 85C is formed between the LED package 530 and a gas such as air.

The upper end portion 852 forms a portion opposed to the wavelength conversion member 96. The upper end portion 852 is provided perpendicular to the optical axis 530bm, as shown in FIG. 20B. In addition, the width of the upper end portion 852 is formed equal to the width of the wavelength conversion member 96. The wavelength conversion member 96 is fixed to the upper end portion 852 by adhesion or the like.

The side portions 853 are formed at both sides with respect to the optical axis 530bm of the LED package 530, respectively. The side portions 853 are formed in parallel along the optical axis 530bm. In addition, the wavelength conversion member 96 was not provided in the side portion 853. The side portion 853 bypasses the wavelength conversion member 96 and forms a path through which light travels outside the lens member 85.

21 is a view for explaining a light emitting unit according to an eighth embodiment.

As shown in FIG. 21, the blue light emitted from the LED package 530 passes through the space 85C and is incident into the lens member 85 from the lower portion 851. At this time, the blue light of the radially widened LED package 530 is refracted toward the optical axis 530bm side when it enters from the space 85C into the lens member 85 having a higher density than the space 85C. Blue light mainly travels along the optical axis 530bm. In addition, part of the blue light is directed toward the upper end portion 852. This blue light passes through the wavelength conversion member 96. At this time, blue light is converted into red light or green light by the wavelength conversion member 96. Red light and green light exit from the lens member 85 and the wavelength conversion member 96.

As shown in FIG. 21, among the blue light emitted from the LED package 530, there is also light directed toward the side portion 853. Light directed to the side portion 853 exits from the lens member 85 without passing through the wavelength conversion member 96.

In this manner, red light, green light, and blue light are radiated from the light emitting portion 850. These three colors of light are reflected by the reflective member 94 or the second reflective member 95, as shown in FIG. 20A. These lights finally travel through the cover member 692 and toward the inside B of the storage compartment 2. Then, these lights are mixed in the storage chamber 2. As a result, the storage chamber 2 is illuminated by the light emitting portion 850.

By the light emitting portion 850 of the eighth embodiment configured as described above, the entire interior of the storage chamber 2 is brightened. In addition, the glare of the user is reduced by the light emitting unit 850, and it is easier for the user to see the article 100 (see FIG. 6) in the storage chamber 2.

The degree of diffusion of light in the side portion 853 may be increased, for example, by forming minute unevenness in the side portion 853. The light extraction efficiency from the side portion 853 may be increased. In this case, the light diffusivity of the side portion 853 can be made equal to the light diffusivity of the wavelength conversion member 96.

Here, in the lighting unit 890 to which the eighth embodiment is applied, as in the lighting unit 750 of the seventh embodiment, the decrease in optical efficiency is suppressed. That is, in the eighth embodiment as well, blue light is irradiated toward the storage chamber 2 without passing through optical members such as the wavelength conversion member 96. Therefore, the blue light which has reached the storage chamber 2 without passing through the wavelength conversion member 96 has a loss of light energy such as Fresnel loss. That is, in the illumination part 890, the fall of optical efficiency is suppressed. As a result, for example, the illuminance in the storage compartment 2 can be increased.

In the eighth embodiment, the wavelength conversion member 96 is fixed to the lens member 75 so that the wavelength conversion member 96 is self-supporting. As a result, there is no need to provide a supporting member for supporting the wavelength conversion member 96 separately, and the component cost can be reduced.

The lighting unit 890 of the eighth embodiment is not limited to the lamp of the refrigerator 1 but can be applied to a general lighting lamp. In this case, the case 91, the cover member 692, the reflective member 94 and the second reflective member 95 are not essential, and the light emitting unit 850 unit can be applied as illumination.

In the seventh and eighth embodiments, an example employing the LED package 530 is used, but the light source may be a single light emitting semiconductor chip. In the seventh and eighth embodiments, the space 75C and the space 85C are formed around the LED package 530, but the space 75C and the space 85C are not essential components, respectively. . The lens member 75 or the lens member 85 may be provided so that no gap is formed between the LED package 530 and the light emitting semiconductor chip. In this case, no gap is formed, so that loss of light energy such as Fresnel loss is further suppressed.

Hereinafter, the light emitting portion 1050 of the fifth modification will be described as a modification of the light emitting portion 850 of the eighth embodiment.

FIG. 22 is a view for explaining a light emitting unit according to Modification Example 5. FIG.

As shown in FIG. 22, the light emitting unit 1050 of the fifth modification includes an LED package 530, a lens member 105, a substrate 54, and a wavelength converting member installed opposite to the LED package 530. 996).

The basic configuration of the light emitting portion 1050 is similar to that of the light emitting portion 850 of the eighth embodiment. However, the configuration of the lens member 105 and the wavelength conversion member 996 is different from the light emitting portion 850.

In the light emitting portion 1050 of the fifth modification, the cross section of the lens member 105 is formed in a semicircular shape. Moreover, the cross section of the wavelength conversion member 996 is formed in circular arc shape. The wavelength conversion member 996 is installed at the end opposite to the side where the LED package 530 is installed with respect to the lens member 105.

In detail, the lens member 105 includes an opposite portion 1051 opposite the wavelength conversion member 996. The wavelength conversion member 996 is fixed to the opposing portion 1051 by adhesion or the like. In addition, the lens member 105 includes a traveling portion 1052 for advancing the light from the LED package 530 without passing it through the wavelength conversion member 996. The advancing part 1052 is provided in the opposing part 1051 so as to be adjacent to each other. The traveling part 1052 bypasses the wavelength conversion member 996 and forms a path through which light travels outside the lens member 105. On the other hand, it is preferable that the surface area of the traveling part 1052 is smaller than the surface area of the opposing part 1051.

In the light emitting part 1050 of the modification 5, the wavelength conversion member 996 is not provided in the whole outer periphery of the lens member 105 formed in semi-circle shape. In other words, all the light from the LED package 530 is not allowed to pass through the wavelength conversion member 996. A part of the light incident on the lens member 105 is output directly from the lens member 105.

Even when using the light emitting part 1050 comprised as mentioned above, the whole inside of the storage chamber 2 becomes bright. In addition, the glare of the user is reduced, making it easier to see the article 100 (see FIG. 6) in the storage compartment 2.

In addition, although demonstrated using the example which applies the lighting part of the 1st Example-8th Example and each modified example to the refrigerator 1, it is not limited to what is applied to the refrigerator 1. The lighting part of 1st Example-8th Example and each modified example can be used as illumination which illuminates the inside of storage rooms, such as a lighting fixture. At this time, it may not be necessary to advance the light toward the inside of the storage compartment and to suppress the light traveling toward the front side of the storage compartment. In such a case, the configuration which suppresses the light traveling toward the front side of the storage compartment is not essential.

Claims (20)

  1. A storage compartment in which an opening is formed in front and an illumination unit mounted in the storage compartment,
    The lighting unit, the light emitting member for irradiating light; And
    And an optical member configured to control the light emitted from the light emitting member to travel within a range of a predetermined angle.
    The light emitted from the light emitting member is prevented from traveling forward by the reflective member and proceeds to the rear of the storage compartment.
  2. The method of claim 1,
    The light emitted from the light emitting member is reflected by the optical member and the angle formed by the vertical axis extending vertically from one surface of the storage chamber is in the range of 20 ° or more and 60 ° or less.
  3. The method of claim 1,
    And the optical member includes a lens member positioned in front of the light emitting member and refracting light emitted from the light emitting member.
  4. The method of claim 3,
    The lighting unit comprises a cover member through which the light emitted from the light emitting member passes.
  5. The method of claim 4, wherein
    The cover member includes a first cover portion extending in one direction and a second cover portion provided with a higher degree of light diffusion than the first cover portion and provided in parallel with the first cover portion.
  6. The method of claim 5,
    The refrigerator having the first cover portion and the second cover portion integrally provided.
  7. The method of claim 6,
    The first cover part and the second cover part are provided to be in a range of 20 ° or more and 60 ° or less with a vertical axis extending vertically from one surface of the storage compartment, to guide the light emitted from the light emitting member into the storage compartment. .
  8. The method of claim 4, wherein
    The optical member further includes a reflecting member, and the light emitted from the light emitting member is reflected from the reflecting member is incident to the cover member.
  9. The method of claim 1,
    The optical member may include a first reflecting member positioned in front of the light emitting member and reflecting light to propagate toward the inside of the storage chamber, and a second reflecting member reflecting light reflected from the first reflecting member to the rear of the storage chamber. Refrigerator comprising a.
  10. The method of claim 3,
    The lighting unit includes a plurality of light emitting members, and the lens member is provided in a single position in front of the plurality of light emitting members.
  11. The method of claim 3,
    And a plurality of lens members are provided to correspond to the plurality of light emitting members.
  12. The method of claim 1,
    The optical member comprises a wavelength conversion member for converting the wavelength of light emitted from the light emitting member.
  13. The method of claim 12,
    The wavelength conversion member includes a phosphor that absorbs light emitted from the light emitting member and emits light having a long wavelength.
  14. The method of claim 13,
    The wavelength conversion member includes a green fluorescent part absorbing blue light and emitting green light and a red fluorescent part absorbing blue light and emitting red light.
  15. The method of claim 13,
    The lighting unit further comprises a cover member through which the light emitted from the light emitting member passes and a reflecting member reflecting the light whose wavelength is converted by the wavelength conversion member to be incident on the cover member.
  16. A storage compartment in which the article is received and an illumination unit mounted in the storage compartment,
    The lighting unit, the light emitting member for emitting light; And
    A cover member for guiding the light emitted from the light emitting member to proceed to the inside of the storage chamber, the cover member including a first diffuser for diffusing the light of the light emitting member and a second diffuser having a greater diffuser than the first diffuser; Refrigerator comprising a.
  17. The method of claim 16,
    The first diffusion unit, the refrigerator is provided to be inclined at a predetermined angle from a vertical axis extending vertically from one surface of the storage compartment in which the lighting unit is installed, the second diffusion unit extends in parallel with the first diffusion unit.
  18. The method of claim 16,
    And a plurality of first diffusion parts and a plurality of second diffusion parts are alternately positioned.
  19. The method of claim 16,
    And a reflecting member for reflecting the light emitted from the light emitting member to be incident on the cover member, and an optical member for controlling the light emitted from the light emitting member to be incident on the reflecting member.
  20. The method of claim 19,
    One surface of the reflective member has an angle where the optical axis of the reflective surface adjacent to the light emitting member is perpendicular to the vertical axis, rather than the angle of the optical axis of the reflective surface far from the light emitting member with the vertical axis extending vertically from one surface of the storage compartment in which the lighting unit is provided. Refrigerator equipped small.
PCT/KR2015/014362 2014-12-26 2015-12-28 Refrigerator WO2016105177A2 (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
JP2014-266761 2014-12-26
JP2014266761 2014-12-26
JP2015-029929 2015-02-18
JP2015029929 2015-02-18
JP2015-177817 2015-09-09
JP2015177817 2015-09-09
JP2015236937 2015-12-03
JP2015-236937 2015-12-03
JP2015237600A JP2017106637A (en) 2014-12-26 2015-12-04 Refrigerator and lighting device
JP2015-237600 2015-12-04
KR10-2015-0187861 2015-12-28
KR1020150187861A KR20160079726A (en) 2014-12-26 2015-12-28 Refrigerator

Applications Claiming Priority (2)

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US15/539,904 US10203153B2 (en) 2014-12-26 2015-12-28 Refrigerator
CN201580076486.XA CN107250699A (en) 2014-12-26 2015-12-28 Refrigerator

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WO2016105177A3 WO2016105177A3 (en) 2016-08-18

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