Abstract: A light guide device has a support member, a light guide member, a first abutting part, and a cover member. The light guide member is supported by the support member and has a light incident surface. The first abutting part has the light guide member and positions the light guide member at the first reference position predetermined in the support member by abutting on the abutted part of the support member. The cover member is attached to the support member and covers the light guide member. The cover member has a first biasing part that biases the light guide member in an abutting direction where the first abutting part abuts the abutting part, with the cover member attached to the support member, and an engaging part that engages with an engaged part of the support member while the first biasing part generates a biasing force in the abutting direction.

Abstract: An automatic parts resupply system for building equipment including a model predictive maintenance system configured to determine a service time at which to perform service on the building equipment by performing a predictive optimization of a total cost of operating and servicing the building equipment over a time period. The service time is a decision variable in the predictive optimization. The automatic parts resupply system includes a resupply manager. The resupply manager is configured to generate a parts resupply order for the building equipment based on a result of the predictive optimization. The resupply manager is configured to determine a transmission time at which to transmit the parts resupply order to a parts supplier. The resupply manager is configured to transmit the parts resupply order to the parts supplier at the transmission time.

Abstract: An automatic parts resupply system for building equipment including a model predictive maintenance system configured to determine a service time at which to perform service on the building equipment by performing a predictive optimization of a total cost of operating and servicing the building equipment over a time period. The service time is a decision variable in the predictive optimization. The automatic parts resupply system includes a resupply manager. The resupply manager is configured to generate a parts resupply order for the building equipment based on a result of the predictive optimization. The resupply manager is configured to determine a transmission time at which to transmit the parts resupply order to a parts supplier. The resupply manager is configured to transmit the parts resupply order to the parts supplier at the transmission time.