JP2000088452A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a sufficient quantity of light and a color temperature and at the same time elongate the life while restraining increase in the temperature at the peripheral portion of a lighting apparatus during continuous lighting, and to reduce the space occupied by the lighting apparatus. SOLUTION: In a lighting apparatus 22 arranged on a ceiling surface of an internal box 3, an incandescent lamp 23 in which a coil filament 23b is linearly suspended with a transparent glass bulb 23a with an internal diameter of about 8 mm, and filled with a xenon gas is arranged along the ceiling surface of the internal box 3. The lighting apparatus 22 is made up of a reflecting plate 26 for reflecting light from the incandescent lamp 23 into the internal box 3, heat insulating plated 27, 28 with a heat shielding property, which plates are provided to the rear surface of the reflecting plate 26, a thin translucent cover 30 for covering the incandescent lamp 23, etc., and a chassis 25 supporting these component elements. The chassis 25 is integrally formed at a most front portion of a resin-made air-blowing duct 21 arranged along the ceiling surface of the internal box 3 in order to introduce cool air from a refrigerator cooler into the internal box 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator in which the interior of a resin inner box is illuminated by a lighting device.

[0002]

In the refrigerator compartment of the refrigerator, there is provided a lighting device which is turned on when the door for the refrigerator compartment is opened. As a light source of such a lighting device, the inside of the bulb is incandescent with a vacuum. It has become common to use light bulbs.
In this case, when the refrigerator compartment door is left open, the temperature rise in the peripheral portion of the lighting device abnormally rises due to the continuous lighting of the incandescent light bulb, and the temperature rises in the resin inner box constituting the peripheral wall of the refrigerator compartment. There may be adverse effects. In order to prevent such a situation, the output of the incandescent light bulb is set so that when the refrigerator compartment door is left open, the temperature rise in the peripheral portion of the lighting device due to the continuous lighting thereof falls below a predetermined level. However, in the above-described conventional lighting device, if an attempt is made to suppress the temperature rise due to the continuous lighting of the incandescent lamp to a predetermined level or less, the amount of light of the incandescent lamp tends to be insufficient, and the color temperature of the incandescent lamp decreases There is a problem that the lighting effect does not reach a level suitable for refrigerator lighting. In addition, since the installation of the incandescent lamp requires a relatively large occupied space, it is unavoidable to increase the size of the lighting device, and there is also a problem that the installation position is restricted.

On the other hand, it has been considered to use a fluorescent lamp as a light source of a lighting device. However, in this case, although the problem of temperature rise can be cleared, there is a problem that a ballast is required and the cost is increased, and the starting property is poor, so that the practicality is inferior. In a state where lighting is repeated for a short time as in the case, there is also a problem that the life is significantly shortened.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to obtain a sufficient light quantity and color temperature while suppressing a rise in the temperature of a peripheral portion during continuous lighting of a lighting device. It is an object of the present invention to provide a refrigerator that can achieve a long life and at the same time can reduce the space occupied by the lighting device and reduce the restrictions on its installation position.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a refrigerator comprising a lighting device in a resin inner box, wherein the lighting device is made of a transparent glass having an inner diameter of 15 mm or less. An incandescent lamp which is constituted by suspending a coil filament linearly in a bulb and enclosing xenon gas therein and arranged along a ceiling surface or a side surface of the inner box, and transmitting light from the incandescent lamp to the inside A reflector provided to reflect into the box, a heat shield having heat insulation provided on the back side of the reflector, and a thin type for covering the incandescent lamp, the reflector and the heat shield. The translucent cover, and a chassis mounted on the ceiling or side surface of the inner box to support the incandescent lamp, the reflector, the heat shield, and the translucent cover ( Claim 1).

According to the above configuration, the incandescent lamp, which is the light source of the lighting device, has a bulb inner diameter of 15 mm or less and is arranged along the ceiling surface or side surface of the inner box. When a lighting device including a heat shield and a light-transmitting cover is actually manufactured, the thickness of the entire lighting device can be suppressed to about 40 mm or less. In this case, the radiant heat from the incandescent lamp is reflected by the reflection plate, and the heat from the incandescent lamp is blocked by the heat-insulating plate, so that even when the incandescent lamp is continuously turned on, the heat from the incandescent lamp is reduced. The risk of adversely affecting the inner box is reduced. Actually, in the lighting device manufactured as described above, when the temperature of the peripheral portion of the lighting device was measured in a state where the incandescent lamp was continuously turned on, the temperature of the peripheral portion increased even after a long time passed. Was found to stay at a relatively low temperature. In addition, the operating characteristics and life of the incandescent lamp used for such a measurement, that is, the incandescent lamp configured by suspending a coil filament linearly in a bulb made of transparent glass and enclosing xenon gas were actually measured. However, while obtaining sufficient light intensity and color temperature,
It has been found that a necessary and sufficient life can be obtained.

Therefore, according to the above configuration, the problem of temperature rise when the incandescent lamp is continuously lit is solved,
A good lighting effect can be obtained, and a thinner lighting device and a longer life of the incandescent lamp can be realized. Moreover, since the incandescent lamp has a very good startability, there is no danger of practicability being worsened as in the case of using a fluorescent lamp as the light source of the lighting device, and a ballast is not required to suppress an increase in cost. become.

In the case of the above configuration, a resin air duct is provided along the inner surface of the inner box to guide cold air from a refrigerator cooler into the inner box, The chassis is integrally formed with the air duct,
It may be configured to be arranged along the inner surface of the inner box (claim 2). According to this configuration, since the chassis of the lighting device can be formed by using a part of the air duct, the number of components can be reduced.

[0009] The air duct may be arranged along the ceiling surface from the back of the inner box, and the chassis may be integrally formed at the forefront of a portion along the ceiling surface. (Claim 3). According to this configuration,
The cool air from the cooler can be efficiently supplied into the inner box. In addition, since the lighting device is located at a position near the front of the ceiling surface of the inner box, it is possible to illuminate the storage in the inner box from the front side (that is, the user side), and as a result, the lighting device The lighting effect of the device is improved.

[0010] In this case, the chassis may be arranged in a recess formed by depressing a heat insulating wall provided so as to surround the inner box. According to this configuration, as described above, the thickness dimension of the lighting device can be suppressed, and the chassis for the lighting device is disposed in the form of being recessed into the recess formed in the heat insulating wall. Thus, the size of the projection of the lighting device into the refrigerator can be made practically unobstructed.

Further, the chassis may be configured to function as a part of the heat insulating plate (claim 5). According to this configuration, the number of components required for the lighting device can be further reduced.

The translucent cover may have a diffuse transmissivity (claim 6), and according to this configuration, the lighting device is made into a surface light source. Even the lighting effect will be improved.

The reflecting plate and the heat insulating plate may be formed integrally with each other (claim 7), and this configuration can also promote reduction in the number of parts.

In addition, it is possible to provide a ventilation hole for communicating a space surrounded by the translucent cover with the inside of the inner box. According to this configuration, the temperature rise in the space surrounded by the light-transmitting cover can be suppressed in accordance with the flow of the air through the ventilation hole, and the heat from the incandescent lamp has an adverse effect on the inner box. Can be more effectively suppressed.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 4 is a perspective view of the refrigerator according to the present embodiment, FIG. 5 is a schematic side view in which the refrigerator is partially sectioned, and FIG. A schematic perspective view is shown. 4 to 6, the refrigerator body 1 is
An outer box 2 made of a steel plate and an inner box 3 made of, for example, an ABS resin are connected, and a heat insulating wall 4 is formed by foam-filling, for example, urethane foam in a space therebetween. A refrigerator compartment 5 and a vegetable compartment 6 are provided vertically above and below the refrigerator main body 1, and a switching compartment which can switch the internal temperature in a plurality of stages below the vegetable compartment 6, although not shown. , An ice making room and a freezing room are provided in order from the top (however, the switching room and the ice making room are arranged side by side).

In this case, a hinged door 7 is provided at the front of the refrigerator compartment 5 and a drawer door 8 connected to the storage container 6a is provided at the front of the vegetable compartment 6. . Further, on the front surfaces of the switching room, the ice making room and the freezing room (not shown), a drawer type switching room door 9, an ice making room door 10, and a freezing room door connected to respective storage containers (not shown) are provided. A door 11 is provided. The internal temperature of the switching chamber can be switched and set in a plurality of stages by an operation panel 12 provided on the refrigerator compartment door 7. Further, a transparent chilled case 5b provided with a transparent lid 5a is provided at a lower portion in the refrigerator compartment 5. Further, in the vegetable compartment 6, a slide-type auxiliary chilled case 6c provided with a lid 6b is provided at an upper position of the storage container 6a.

The refrigerator compartment 5 and the vegetable compartment 6 are partitioned by a partition member 13 made of, for example, a transparent plastic plate and a horizontal frame 14 provided on the front side. However, a ventilation port 13a is formed at the rear end of the partition member 13. The vegetable room 6 and the switching room and the ice making room (not shown) below the vegetable room 6 are partitioned by a heat insulating partition wall 4a.

At the back of the vegetable compartment 6, a cooler room 16 is formed which is partitioned by a plastic plate-like cover member 15. The cooler room 16 has a cooler 17, a cooling fan 18, and a defrost heater. 19 and a heat insulator 20 are arranged as shown. The cover member 15 has an outlet 15a for blowing air into the auxiliary chilled case 6c.
And a suction port 15 for sucking air in the vegetable compartment 6
b is formed. Further, inside the refrigerator compartment 5, there is disposed a resin-made ventilation duct 21 arranged along the ceiling surface from the back surface thereof. The blower duct 21 has a lower end communicated with the cooler room 16, and has a multi-stage outlet 21 a for blowing cool air supplied from the cooler room 16 into the refrigerator room 5. Is provided.
In addition, as shown in FIG. 5, the ventilation duct 21 is actually configured by combining a ceiling surface duct portion 21X and a rear surface duct portion 21Y.

Thus, when the cooling fan 18 is operated, the cool air generated by the cooler 17 is blown into the refrigerator compartment 5 through the blower duct 21 as shown by the arrow in FIG. Vent hole 13a formed in member 13
Flows into the vegetable compartment 6 through the suction port 15b
Through the first cooler chamber 15. At this time, a part of the cool air generated by the cooler 17 is supplied to the auxiliary chilled case 6 through the outlet 15a.
c. Although not specifically illustrated, between the cover member 15 and the auxiliary chilled case 6c, the cool air flowing into the vegetable compartment 6 from the ventilation opening 13a enters the cooler compartment 16 from the suction opening 15b in a short circuit manner. (For example, a labyrinth structure using ribs) is provided for preventing the return to the above.

Although not shown, a cooler room partitioned by a plastic plate-shaped cover member is also formed on the rear surfaces of the switching room, the ice making room, and the freezing room. A cooler, a cooling fan, a defrost heater, and the like, which are separate from the heat sink 17, are arranged, and the cooling operation of the switching room, the ice making room, and the freezing room is performed according to the operation of the cooler and the cooling fan. Has become.

On the ceiling surface of the refrigerator compartment 5, there is provided an illumination device 22 which is turned on by a door switch (not shown) when the refrigerator compartment door 7 and the vegetable compartment door 8 are open. The illuminating device 22 is provided so as to be partially buried in the front part of the portion along the ceiling surface (the ceiling surface portion 21X) in the ventilation duct 21. Hereinafter, also refer to FIGS. 1 to 3. I will explain while.

That is, FIG. 1 is a longitudinal sectional view of the lighting device 22 and its periphery, and FIG. 2 is a perspective view of the lighting device 22 and a part (the ceiling surface portion 21X) of the ventilation duct 21 as viewed from below. 3A and 3B are a side view and a plan view, respectively, showing a partially sectioned incandescent lamp 23 used in the lighting device.

First, in FIG. 3, an incandescent lamp 23 is of a so-called non-clamp terminal type, and a tungsten coil filament 23b (a single coil) is inserted into a transparent semi-hard glass bulb 23a having an inner diameter d of about 8 mm. The coil) is suspended linearly in the valve axial direction by inner wells 23c, 23d made of, for example, molybdenum, and a pair of outer wells 23e, 23 made of, for example, nickel-plated iron wire.
e is drawn in parallel from the sealing pinch portion 23f of the bulb 23a. In addition, xenon gas and nitrogen gas (xenon gas 95%,
For example, nitrogen gas (5%) is sealed at an internal pressure of 41.5 kPa (value at normal temperature), and its rated input voltage is set to 12 V and its rated output is set to 10 W. The glass thickness of the bulb 23a is set to about 0.8 mm.

As shown in FIG. 2, on the front side (in the direction of arrow A in FIG. 2) of the ceiling surface portion 21X of the blower duct 21, the outlets 21a are formed so as to be separated to the left and right sides. The lighting device 22 is disposed at a position between the openings 21a.

In FIG. 1, an opening 3a is formed in a portion of the inner box 3 corresponding to the arrangement area of the illuminating device 22, and a resin inner cover 24 is formed so as to close the opening 3a. Is arranged. In this case, a concave portion 4b is depressed at a portion corresponding to the opening 3a in the heat insulating wall 4, and the inside cover 24 has a shape having a concave fitting portion 24a that enters the concave portion 4b. I have. The air duct 21 (the ceiling surface 21)
In X), a chassis 25 for the lighting device 22 is integrally formed at a position corresponding to the concave fitting portion 24a of the inside cover 24 so as to enter into the concave fitting portion 24a.

At a position near the front of the chassis 25,
For example, a reflector 26 which is formed by bending an aluminum plate or a stainless steel plate and is also used as a light bulb support is attached. The reflecting plate 26 includes a horizontal plate portion 26a positioned in parallel with the chassis 25, a bulb support portion 26b that is bent substantially perpendicularly downward from a rear end of the horizontal plate portion 26a, and the horizontal plate portion 26a. Light-shielding / reflective portion 2 bent and formed so as to be directed obliquely forward from the front end of plate portion 26a.
6c. The chassis 25 is integrally formed with a support arm 25a for supporting the tip of the light-shielding / reflecting portion 26c.

The reflection plate 26 is provided integrally with heat insulation plates 27 and 28 formed of a heat-resistant resin so as to have a heat shielding property. Specifically, one heat insulating plate 2
Numeral 7 also has a function of supporting the reflection plate 26, and is fixed to the chassis 25 in a state of being suspended therefrom.
The bulb supporting portion 26b of the reflector 26 is fixed to the front side thereof by bonding or other means. Further, the other heat radiating plate 28 is fixed to the back surface of the light shielding / reflecting portion 26c of the reflecting plate 26 by bonding or other means. still,
On the rear surface portion of the horizontal plate portion 26a of the reflection plate 26, the chassis 25 functions as a heat shield.

A socket 29 for the incandescent lamp 23 is attached and fixed to the back surface of the heat insulating plate 28 provided on the light bulb supporting portion 26b. This socket 29 uses a resin material having excellent heat resistance such as PPS (Poly-Phenylene Sulfide) resin for its housing, and although not specifically shown, the incandescent lamp 23 is mounted when the incandescent lamp 23 is mounted. It has a well-known structure including a pair of female terminals into which terminals (outer wells 23e, 23e) are inserted and a pin-shaped external terminal protruding out of the housing from each female terminal. In this case, the bulb support 26b
The heat insulating plate 28 has a through hole (not shown) through which the incandescent lamp 23 is inserted when the incandescent lamp 23 is mounted on the socket 29.

A thin translucent cover 30 for covering the incandescent lamp 23, the reflector 26 and the heat shields 27 and 28 is detachably attached to the chassis 25. The translucent cover 30 is formed of a polycarbonate resin, a polystyrene resin, or the like, and has a diffuse transmissive state because its front surface or back surface is roughened. In this case, the translucent cover 30 is, for example,
In a state where the support claw 30a formed at the front end is supported by the front end of the chassis 25, the engagement claw 30b formed at the rear end is engaged with the rear end of the chassis 25 to be attached. It is. Further, as shown in FIG. 2, a plurality of ventilation holes 30 c for communicating the space surrounded by the light-transmitting cover 30 with the inside of the refrigerator compartment 5 are provided at the peripheral edge of the light-transmitting cover 30. It is provided in a notch shape.
In FIG. 1, a heat insulating material 31 provided between the ceiling surface duct portion 21 </ b> X and the inner box 3 is for partitioning a ventilation path in the ventilation duct 21, and is formed of, for example, styrene foam.

Here, in the lighting device 22, the vertical distance from the outer surface of the bulb 23a of the incandescent lamp 23 (the inner diameter d is about 8 mm and the glass thickness is about 0.8 mm) to the chassis 25 is set within a range of 10 ± 5 mm. And the valve 23
The vertical distance from the outer surface of a to the outer surface of the translucent cover 30 is set to about 20 ± 5 mm, so that the thickness dimension (vertical dimension) of the entire lighting device 22 can be set to 40 mm or less. It is composed. In this case, if the inner diameter d of the bulb 23a is 15 mm or less, the thickness of the entire lighting device 22 can be reduced to 40 mm or less.
The inner diameter d of the valve 23a does not need to be set to 8 mm as in this embodiment, but can be up to about 15 mm.

In the refrigerator according to the present embodiment described above, a tungsten coil filament 23b is linearly suspended and a xenon gas is sealed in a transparent glass bulb 23a having an inner diameter d of 8 mm in the light source of the illumination device 22. In addition to using the incandescent lamp 23 thus constructed,
6 is characterized in that it is configured such that heat insulating plates 27 and 28 are provided on the back side. In this case, since the incandescent lamp 23 in which xenon gas is sealed as described above has a convection phenomenon of the sealed gas, the degree of temperature rise is larger than that of the vacuum lamp, and this is a space surrounded by the translucent cover 30. There are circumstances that affect the temperature rise in the department. However, the translucent cover 30 is provided with a plurality of cutouts 30c for communicating the space with the inside of the refrigerator compartment 5, so that the airflow through the cutouts 30c can be changed. As a result, an effect of suppressing a temperature rise in the space can be obtained.

Then, when the temperature of each part was measured in a state where the lighting device 22 was continuously turned on (however, the inside of the refrigerator compartment 5 was not cooled), the surface temperature of the heat insulating plate 27 was found to be 7 hours later. 70 ° C., the surface temperature of the light-transmitting cover 30 was 89 ° C., and the temperature of the socket 29 was 103 ° C. or less. In this case, the socket 29 having the highest temperature is a PPS having the property that the continuous use temperature is sufficiently high (about 200 to 240 ° C.) while being inexpensive.
Since it is formed of resin, no practical problem arises at all. In addition, the heat from the incandescent light bulb 22 causes the heat from the incandescent light bulb 22 to fall due to the ABS.
The transmission to the resin inner box 3 and the urethane resin heat insulating wall 4 can be suppressed as much as possible. Therefore, according to the configuration of the present embodiment, the problem of a rise in temperature when the incandescent lamp 23 is continuously turned on (for example, when the refrigerator door 7 and the vegetable room door 8 remain open) is cleared. However, the lighting device 22 can be made thinner.

In this case, the lighting device 22 can have a thickness of at most 40 mm or less, and the chassis 25 for the lighting device 22 is
Is arranged so as to enter into the concave portion 4b formed in the cooling device 5, so that the size of the projection of the lighting device 22 into the refrigerator compartment 5 can be set to a state that does not hinder practical use.

On the other hand, when the operating characteristics of the xenon gas-filled incandescent lamp 23 used in this embodiment were measured, the total luminous flux was 115 ± 15 lumens and the color temperature was lit at the rated input voltage (12 V). Is 2650-27
It turned out to be 20K. The incandescent lamp 23
Was measured under actual use environment (under use environment attached to the lighting device 22) for a plurality of (10) samples. As a result, all of the samples maintained the lighting state even after 7000 hours. was gotten. Therefore, the lighting device 22 has a configuration in which the small-volume incandescent lamp 23 is provided in a limited space,
Near white, close to white light (color temperature 2650-2720K)
In addition, a large amount of light (11
(5 ± 15 lumens), and can realize an excellent characteristic that a required and sufficient long life can be realized at the same time. Of course, the incandescent light bulb 23
Since the startability is extremely good, there is no danger that the practicality is deteriorated as in the case of using a fluorescent lamp as a light source, and a ballast is not required, so that an increase in cost can be suppressed.

The overvoltage life of the incandescent lamp 23 used in this embodiment was measured by applying a rated 110% voltage (13.2 V) to a plurality of (10) samples, and was 5380 hours on average. Was found to reach. Therefore, even when the power supply voltage of the incandescent lamp 23 fluctuates relatively high, the life required for the refrigerator interior lighting bulb (at least 1000 hours or more, preferably 2000 hours or more) is required.
Time or more). As a result, when mounted on a large refrigerator having a long replacement cycle, there is an advantage that maintenance of the incandescent lamp 23 (replacement due to running out of filament) becomes unnecessary.

The ventilation duct 21 is provided along the ceiling surface from the back of the refrigerator compartment 5, and the outlet 21a is provided at the tip of the ceiling surface portion. The cold air from 17 can be efficiently supplied into the refrigerator compartment 5. In this case, the chassis 25 for the lighting device 22 is
Since it is formed integrally with X, the number of parts can be reduced. Moreover, the chassis 25 is
It is formed at the forefront of the ceiling duct portion 21X, and the lighting device 22 is located at a position near the front surface of the ceiling of the refrigerator compartment 5, so that the stored material in the refrigerator compartment 5 is moved forward. It can be illuminated from the side (that is, the user side),
As a result, the lighting effect in the refrigerator is improved.

The reflecting plate 26 and the heat insulating plates 27 and 28 of the lighting device 22 are provided integrally, and the chassis 25 is configured to function as a part of the heat insulating plate. The number of parts can be reduced. Since the light-transmitting cover 30 of the lighting device 22 is in a state of having a diffuse transmission property, the lighting device 22 becomes a surface light source. Lighting effect is improved.

In addition, the present invention is not limited to the embodiment described above and shown in the drawings, but can be modified or expanded as described below. It is also possible to adopt a configuration in which the lighting device is arranged at a portion along the side surface of the refrigerator compartment 5. During the lighting period of the lighting device 22, the cooling fan 18 may be operated to blow cool air to the lighting device 22, and according to this configuration, a rise in the temperature of the lighting device 22 can be positively suppressed. . As mentioned in the examples,
The inner diameter d of the bulb 23a of the incandescent lamp 23 may be 15 mm or less. Instead of the reflection plate 26, for example, a configuration may be used in which a resin plate having an aluminum foil adhered on the surface or a resin plate having a metal-deposited surface formed on the surface is used as the reflection plate. Can be expected.

Although the incandescent lamp 23 is configured to contain only a small amount of nitrogen gas in addition to xenon gas, it may be configured to contain only a small amount of inert gas (eg, argon, krypton, etc.) other than nitrogen gas. is there. A configuration may be adopted in which a getter for adsorbing impurity gas such as oxygen is provided in the incandescent lamp 23. Although the incandescent lamp 23 is used in which the pair of outer wells 23e are drawn in the same direction from the bulb 23, the pair of outer wells may be drawn in different directions from both sides of the bulb.

[0040]

According to the present invention, as is apparent from the above description, as a light source of a lighting device for illuminating the inside of an inner box, a coil filament is linearly inserted into a bulb made of transparent glass having an inner diameter of 15 mm or less. And an incandescent lamp that is suspended in xenon gas is used, and the lighting device is arranged with the incandescent lamp along the ceiling surface or side surface in the inner box. A reflector provided to reflect light into the inner box; a heat shield having heat insulation provided between the reflector and the inner box; the incandescent lamp, the reflector and the heat shield A thin translucent cover for covering the board, and a chassis attached to the ceiling or side surface in the inner box for supporting the incandescent bulb, the reflector, the heat shield and the translucent cover. Structure. While suppressing the temperature rise of the peripheral part during continuous lighting of the device, it is possible to obtain a sufficient amount of light and color temperature, obtain a good lighting effect, and at the same time, extend the life of the incandescent lamp, and The space occupied by the lighting device can be reduced, and an extremely advantageous effect such as the restriction on the installation position is reduced.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a main part showing an embodiment of the present invention.

FIG. 2 is a perspective view of a part of the lighting device and the air duct seen from below.

FIG. 3 is a side view and a plan view showing an incandescent lamp in a partial cross section.

FIG. 4 is a perspective view of a refrigerator.

FIG. 5 is a schematic side view partially showing a refrigerator in section;

FIG. 6 is a schematic perspective view showing the upper part of the refrigerator in a partial cross section.

[Description of Signs] 1 is a refrigerator main body, 2 is an outer box, 3 is an inner box, 4 is a heat insulating wall, 4
b is a concave portion, 5 is a refrigerator room, 6 is a vegetable room, 17 is a cooler, 1
8 is a cooling fan, 21 is a ventilation duct, 22 is a lighting device,
23 is an incandescent lamp, 23a is a bulb, 23b is a coil filament, 24 is a cover in a refrigerator, 25 is a chassis, 26 is a reflection plate, 27 and 28 are heat insulating plates, 30 is a light-transmitting cover,
0c indicates a vent.

Claims (8)

[Claims] 1. A refrigerator having an illumination device provided in a resin inner box, wherein the illumination device has a coil filament linearly suspended in a transparent glass bulb having an inner diameter of 15 mm or less and a xenon gas. An incandescent light bulb configured to be enclosed and arranged along a ceiling surface or a side surface in the inner box, and a reflector provided to reflect light from the incandescent lamp into the inner box, A heat shield provided with heat insulation provided on the back side of the reflector, a thin translucent cover for covering the incandescent lamp, the reflector and the heat shield, and a ceiling surface in the inner box or A refrigerator, comprising: a chassis mounted on a side surface to support the incandescent lamp, the reflector, the heat shield, and the translucent cover. 2. A resin air duct is provided along an inner surface of the inner box to guide cool air from a refrigerator cooler into the inner box, and the chassis is provided with the air duct. The refrigerator according to claim 1, wherein the refrigerator is integrally formed and arranged along the inner surface of the inner box. 3. The air duct is disposed from the back of the inner box along the ceiling surface, and the chassis is integrally formed at the forefront of a portion along the ceiling surface. The refrigerator according to claim 2, wherein 4. The refrigerator according to claim 2, wherein the chassis is disposed in a recess formed in a heat insulating wall provided to surround the inner box. 5. The refrigerator according to claim 2, wherein the chassis is configured to function as a part of the heat insulating plate. 6. The refrigerator according to claim 1, wherein the translucent cover has a diffuse transmissive property. 7. The refrigerator according to claim 1, wherein the reflection plate and the heat insulation plate have a shape integrated with each other. 8. The refrigerator according to claim 1, further comprising a ventilation hole communicating a space surrounded by the translucent cover with the inside of the inner box.