A refrigerator apparatus comprising: a cabinet having an outer case to form outer appearance of the refrigerator and an inner case to define an inner space; the inner case having a case opening; and an lighting device mounted on the inner case for illuminating light through the case opening, wherein the lighting device includes: a lamp case mounted on the inner case and having a cavity defined therein at a position which allows the cavity to communicate with the case opening; a light-emitting unit accommodated in the cavity, wherein the light-emitting unit is disposed spaced apart from the case opening along the inner case, and wherein the light-emitting unit emits light toward an inner surface of the cavity; a cover coupled with the lamp case to cover the case opening, wherein the light emitted from the light-emitting unit is reflected by the inner surface of the cavity and then radiated toward the interior space through the cover; and a reflection portion formed on the cover, wherein the reflection portion is configured to allow light emitted from the light-emission unit directly toward the case opening to be redirected toward the inner surface of the cavity, wherein the cover includes a light-emission portion having a shape for blocking the case opening and transmitting therethrough light reflected from the cavity, characterized in that the cover further comprises a step portion extended from one end of the light-emission portion and covered by the inner case, the light-emitting unit is mounted on the step portion, and the reflection portion is formed to protrude from a back surface of the step portion. a cabinet having an outer case to form outer appearance of the refrigerator and an inner case to define an inner space; the inner case having a case opening; and an lighting device mounted on the inner case for illuminating light through the case opening, wherein the lighting device includes: a lamp case mounted on the inner case and having a cavity defined therein at a position which allows the cavity to communicate with the case opening; a light-emitting unit accommodated in the cavity, wherein the light-emitting unit is disposed spaced apart from the case opening along the inner case, and wherein the light-emitting unit emits light toward an inner surface of the cavity; a cover coupled with the lamp case to cover the case opening, wherein the light emitted from the light-emitting unit is reflected by the inner surface of the cavity and then radiated toward the interior space through the cover; and a reflection portion formed on the cover, wherein the reflection portion is configured to allow light emitted from the light-emission unit directly toward the case opening to be redirected toward the inner surface of the cavity, wherein the cover includes a light-emission portion having a shape for blocking the case opening and transmitting therethrough light reflected from the cavity, characterized in that the cover further comprises a step portion extended from one end of the light-emission portion and covered by the inner case, the light-emitting unit is mounted on the step portion, and the reflection portion is formed to protrude from a back surface of the step portion. a lamp case mounted on the inner case and having a cavity defined therein at a position which allows the cavity to communicate with the case opening; a light-emitting unit accommodated in the cavity, wherein the light-emitting unit is disposed spaced apart from the case opening along the inner case, and wherein the light-emitting unit emits light toward an inner surface of the cavity; a cover coupled with the lamp case to cover the case opening, wherein the light emitted from the light-emitting unit is reflected by the inner surface of the cavity and then radiated toward the interior space through the cover; and a reflection portion formed on the cover, wherein the reflection portion is configured to allow light emitted from the light-emission unit directly toward the case opening to be redirected toward the inner surface of the cavity, wherein the cover includes a light-emission portion having a shape for blocking the case opening and transmitting therethrough light reflected from the cavity, characterized in that the cover further comprises a step portion extended from one end of the light-emission portion and covered by the inner case, the light-emitting unit is mounted on the step portion, and the reflection portion is formed to protrude from a back surface of the step portion.