Electric light bulb type light source apparatus and translucent cover

An electric light bulb type light source apparatus, comprising:

• a speaker;
• a light source unit;
• a supporting unit that includes a base portion including a tapered surface and a supporting surface that supports the light source unit, and supports the speaker;
• a casing on which the supporting unit is disposed;
• and
• a base that is used for supplying a power to the light source unit and the speaker,
• the supporting unit includes a heat sink that forms at least a part of the base portion, the heat sink being formed in a ring shape,
• the tapered surface and the supporting surface being included on the heat sink, the tapered surface being provided at an outer periphery of the heat sink and having a tapered angle such that the outer periphery of the heat sink is reduced in diameter as a distance to the base decreases, and the casing including an abutting surface which is tapered in an angular manner corresponding to the tapered angle of the tapered surface such that the abutting surface abuts against the tapered surface of the heat sink when the supporting unit is disposed on the casing,
• wherein
• the supporting unit, the speaker, and the base are arranged such that the base portion is disposed between the speaker and the base,
• the supporting unit further includes a holding portion that holds the speaker such that the supporting surface of the base portion faces the speaker, and
• the base portion of the supporting unit is disposed around the holding portion,
• wherein
• the casing includes a translucent cover, and
• wherein
• the translucent cover includes
• a first opening portion, and
• a second opening portion provided to be closed by the speaker.