Deodorization module and storage device including deodorization module

A purification module comprising:

• a housing including a bar fixer and a substrate fixer;
• a photocatalytic filter disposed such that air introduced into the housing passes through the photocatalytic filter;
• a light source module including a light source substrate and at least one light emitter on a first surface of the light source substrate, the light source module configured to emit light toward the photocatalytic filter;
• circuitry configured to supply power to the light source module;
• and
• an external guide protruding outward around an outer periphery of the housing,
• wherein the photocatalytic filter is secured in the housing by coupling a region of the photocatalytic filter to the bar fixer,
• wherein at least two side surfaces of the photocatalytic filter contact inner surfaces of the bar fixer, respectively,
• wherein the light source module is secured in the housing by coupling at least of a region of the light source substrate to the substrate fixer,
• wherein the external guide is of a shape so as to enable only a first region of the purification module to be exposed to an external space of the housing and a second region of the purification module to not be exposed to the external space of the housing,
• wherein the external guide is fitted around the outer periphery of the housing so as to be substantially parallel to an upper surface and a lower surface of the housing, and
• wherein an amount of the purification module that is not exposed to the external space of the housing is determined based on a distance from a lower surface of the purification module that the external guide is fitted around the outer periphery of the housing, to the external guide.