Unit for indicating lights and indicating lights

A stackable unit for indicating lights comprising:

• a cylindrical case (11) having first and second end portions (18, 19);
• a pair of connection means (20, 21) disposed at the first and second end portions (18, 19) of the case (11), respectively, and each establishing connection with a corresponding end portion (18, 19) of a case (11) of a corresponding unit (3a, 3b, 3c, 5, 6, 7) via relative rotation of the cases;
• and
• an electrical connection member (14, 140, 141, 142) extended between the first and second end portions (18, 19) of the case (11) for establishing electrical connection between units (3a, 3b, 3c, 5, 6, 7) corresponding to each other,
• wherein the electrical connection member (14, 140, 141, 142) at least includes a plate member (15, 150, 151, 142) as a part thereof,
• wherein first and second ends (28, 29) of the electrical connection member (14, 140, 141, 142) are provided with first and second terminal portions (31, 31a;
• 32, 32a), respectively, each terminal portion establishing connection with a corresponding terminal portion (31, 31a;
• 32, 32a) of a corresponding unit (3a, 3b, 3c, 5, 6, 7), and
• wherein at least one of the first and second terminal portions (31, 31a;
• 32, 32a) is provided with the plate member (15, 150, 151, 142) and includes a contact portion (42a, 42b) capable of resiliently establishing linear or face-to-face contact with a corresponding terminal portion (31, 31a;
• 32, 32a) of a corresponding unit (3a, 3b, 3c, 5, 6, 7).